In this tutorial we will explore examples of how to obtain device info from your android phone.

Example 1: Get Android Device Info – Java

This is a java example on how to get the android device info programmatically. Follow the following steps to recreate the project.

Step 1: Dependencies

No special dependency is needed.

Step 2: Permissions

No special permissions are needed.

Kotlin Android Fragments Example

Kotlin Android Fragments Example
Kotlin Android Fragments Example

Step 3: Design Layout

We have and need only one layout, the layout for our MainActivity.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/view_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.elyeproj.deviceinfo.MainActivity">

</LinearLayout>

Step 4: Write Code

Here is the full code

MainActivity.java

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private float deviceDensity = 0;
    private ViewGroup containerView = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        containerView = (ViewGroup)findViewById(R.id.view_container);

        calculateDensity();
        calculateDeviceInfo();
        calculateStatusBar();
    }

    private void calculateDensity() {
        deviceDensity  = getResources().getDisplayMetrics().density;

        String densityStr = "Undefined";

        if (deviceDensity == 0.75) densityStr = "LDPI";
        else if (deviceDensity == 1.0) densityStr = "MDPI";
        else if (deviceDensity == 1.5) densityStr = "HDPI";
        else if (deviceDensity == 2.0) densityStr = "XHDPI";
        else if (deviceDensity == 3.0) densityStr = "XXHDPI";
        else if (deviceDensity == 4.0) densityStr = "XXXHDPI";

        addTextView("Density Value: " + deviceDensity + "(" + densityStr + ")");
    }

    private void calculateDeviceInfo() {
        Display display = getWindowManager().getDefaultDisplay();
        DisplayMetrics outMetrics = new DisplayMetrics();
        display.getMetrics(outMetrics);

        float dpHeight = outMetrics.heightPixels / deviceDensity;
        float dpWidth  = outMetrics.widthPixels / deviceDensity;

        addTextView("Height Resolution(dp): " + dpHeight);
        addTextView("Width Resolution(dp): " + dpWidth);
    }

    private void calculateStatusBar() {
        int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            float dpStatusBar = getResources().getDimensionPixelSize(resourceId)/deviceDensity;
            addTextView("Status Bar Resolution(dp)\t: " + dpStatusBar);
        }
    }

    private void addTextView(String text) {
        TextView textView = new TextView(this);
        textView.setText(text);
        containerView.addView(textView);
    }
}

Reference

Download the code below.

Number Link
1. Download code
2. Follow code author

More Examples

Here are more examples

1. Get Device Info Example

Learn how to get device info in android using this example written in Java.

Here is the demo of the created app:

https://github.com/ZQiang94/DisplayInfo/raw/master/device-2016-08-20-115904.png

Step 1: Dependencies

No external dependencies are needed for this project.

Step 2: Design Layouts

We have only one layout:

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingBottom="@dimen/activity_vertical_margin"
            android:paddingLeft="@dimen/activity_horizontal_margin"
            android:paddingRight="@dimen/activity_horizontal_margin"
            android:paddingTop="@dimen/activity_vertical_margin"
            android:scrollbars="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/screen_size_label"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/screen_size_width"/>

            <TextView
                android:id="@+id/screen_size_width"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/screen_size_height"/>

            <TextView
                android:id="@+id/screen_size_height"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/screen_size"/>

            <TextView
                android:id="@+id/screen_size"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/resolution_label"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/resolution_width"
                android:textColor="#dd5555"/>

            <TextView
                android:id="@+id/resolution_width"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/resolution_height"
                android:textColor="#dd5555"/>

            <TextView
                android:id="@+id/resolution_height"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/dpi_label"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/dpi_width"/>

            <TextView
                android:id="@+id/dpi_width"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/dpi_height"/>

            <TextView
                android:id="@+id/dpi_height"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/density_dpi"
                android:textColor="#dd5555"/>

            <TextView
                android:id="@+id/density_dpi"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/density_label"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/density"/>

            <TextView
                android:id="@+id/density"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/dip_label"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/dip_width"/>

            <TextView
                android:id="@+id/dip_width"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/dip_height"/>

            <TextView
                android:id="@+id/dip_height"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/suggestion_label"
            android:textColor="#ff2222"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/suggestion_layout"/>

            <TextView
                android:id="@+id/suggestion_layout_simple"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/suggestion_layout"/>

            <TextView
                android:id="@+id/suggestion_layout"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/suggestion_layout_land"/>

            <TextView
                android:id="@+id/suggestion_layout_land"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/suggestion_values"/>

            <TextView
                android:id="@+id/suggestion_values_simple"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/suggestion_values"/>

            <TextView
                android:id="@+id/suggestion_values"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/suggestion_values_land"/>

            <TextView
                android:id="@+id/suggestion_values_land"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="other"
            android:textColor="#ff2222"
            android:textStyle="bold"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="status_bar_height:"/>

            <TextView
                android:id="@+id/status_bar_height"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="navigation_bar_height:"/>

            <TextView
                android:id="@+id/navigation_bar_height"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="#00aaaa"/>
        </LinearLayout>

    </LinearLayout>
</ScrollView>

Step 3: Create MainActivity

Write MainActivity code as shown below

MainActivity.java

package com.displayinfo;

import android.content.res.Resources;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.view.Window;
import android.widget.TextView;

/**
 * Android Developer Document
 * https://developer.android.com/reference/android/util/DisplayMetrics.html
 */
public class MainActivity extends AppCompatActivity {

    private TextView mDIPHeight;
    private TextView mDIPWidth;
    private TextView mDPIHeight;
    private TextView mDPIWidth;
    private TextView mDensityDpi;
    private TextView mDesity;
    private TextView mResolutionHeight;
    private TextView mResolutionWidth;
    private TextView mScreenSizeHeight;
    private TextView mScreenSize;
    private TextView mScreenSizeWidth;
    private TextView mSuggestionLayout;
    private TextView mSuggestionLayoutLand;
    private TextView mSuggestionLayoutSimple;
    private TextView mSuggestionValues;
    private TextView mSuggestionValuesLand;
    private TextView mSuggestionValuesSimple;
    private TextView mStatusBaHheight;
    private TextView mNavigationBarHeight;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.mScreenSizeWidth = (TextView) findViewById(R.id.screen_size_width);
        this.mScreenSizeHeight = (TextView) findViewById(R.id.screen_size_height);
        this.mScreenSize = (TextView) findViewById(R.id.screen_size);
        this.mResolutionWidth = (TextView) findViewById(R.id.resolution_width);
        this.mResolutionHeight = (TextView) findViewById(R.id.resolution_height);
        this.mDPIWidth = (TextView) findViewById(R.id.dpi_width);
        this.mDPIHeight = (TextView) findViewById(R.id.dpi_height);
        this.mDensityDpi = (TextView) findViewById(R.id.density_dpi);
        this.mDesity = (TextView) findViewById(R.id.density);
        this.mDIPWidth = (TextView) findViewById(R.id.dip_width);
        this.mDIPHeight = (TextView) findViewById(R.id.dip_height);
        this.mSuggestionLayout = (TextView) findViewById(R.id.suggestion_layout);
        this.mSuggestionLayoutLand = (TextView) findViewById(R.id.suggestion_layout_land);
        this.mSuggestionLayoutSimple = (TextView) findViewById(R.id.suggestion_layout_simple);
        this.mSuggestionValues = (TextView) findViewById(R.id.suggestion_values);
        this.mSuggestionValuesLand = (TextView) findViewById(R.id.suggestion_values_land);
        this.mSuggestionValuesSimple = (TextView) findViewById(R.id.suggestion_values_simple);
        this.mStatusBaHheight = (TextView) findViewById(R.id.status_bar_height);
        this.mNavigationBarHeight = (TextView) findViewById(R.id.navigation_bar_height);

        /**
         *  A structure describing general information about a display,
         *  such as its size, density, and font scaling.
         */

        DisplayMetrics dm = getResources().getDisplayMetrics();
        //获取屏幕尺寸
        this.mScreenSizeWidth.setText(String.valueOf(((float) dm.widthPixels) / dm.xdpi));
        this.mScreenSizeHeight.setText(String.valueOf(((float) dm.heightPixels) / dm.ydpi));
        double x = Math.pow(dm.widthPixels / dm.xdpi, 2);
        double y = Math.pow(dm.heightPixels / dm.ydpi, 2);
        this.mScreenSize.setText(String.valueOf(Math.sqrt(x + y)));
        //获取屏幕分辨率
        this.mResolutionWidth.setText(String.valueOf(dm.widthPixels));
        this.mResolutionHeight.setText(String.valueOf(dm.heightPixels));
        //物理像素
        this.mDPIWidth.setText(String.valueOf(dm.xdpi));
        this.mDPIHeight.setText(String.valueOf(dm.ydpi));
        //The screen density expressed as dots-per-inch.
        this.mDensityDpi.setText(densityDpiToString(dm.densityDpi));

        this.mDesity.setText(String.valueOf(dm.density));

        float dipW = (((float) dm.widthPixels) * 160.0f) / ((float) dm.densityDpi);
        float dipH = (((float) dm.heightPixels) * 160.0f) / ((float) dm.densityDpi);
        this.mDIPWidth.setText(String.valueOf(dipW));
        this.mDIPHeight.setText(String.valueOf(dipH));

        this.mSuggestionLayout.setText("layout" + getSmallestWidthString((int) dipW, (int) dipH) + getResolutionString(dm.widthPixels, dm.heightPixels));
        this.mSuggestionLayoutLand.setText("layout-land" + getSmallestWidthString((int) dipW, (int) dipH) + getResolutionString(dm.widthPixels, dm.heightPixels));
        this.mSuggestionLayoutSimple.setText("layout" + getSmallestWidthString((int) dipW, (int) dipH));
        this.mSuggestionValues.setText("values" + getSmallestWidthString((int) dipW, (int) dipH) + getResolutionString(dm.widthPixels, dm.heightPixels));
        this.mSuggestionValuesLand.setText("values-land" + getSmallestWidthString((int) dipW, (int) dipH) + getResolutionString(dm.widthPixels, dm.heightPixels));
        this.mSuggestionValuesSimple.setText("values" + getSmallestWidthString((int) dipW, (int) dipH));

        this.mStatusBaHheight.setText(String.valueOf(getStatusBarHeight()));
        this.mNavigationBarHeight.setText(String.valueOf(getNavigationBarHeight()));

    }

    //获得导航栏的高度
    public int getNavigationBarHeight() {
        Resources resources = getResources();
        int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android"); //获取NavigationBar的高度
        int height = resources.getDimensionPixelSize(resourceId);
        return height;
    }

    //获取状态栏的高度
    public int getStatusBarHeight() {
        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        int width = dm.widthPixels;  //屏幕宽
        int height = dm.heightPixels;  //屏幕高
        Rect frame = new Rect();
        getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int statusBarHeight = frame.top;  //状态栏高
        int contentTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
        int titleBarHeight = contentTop - statusBarHeight; //标题栏高

        return titleBarHeight;
    }

    private String densityDpiToString(int densityDpi) {
        String str;
        switch (densityDpi) {
            case 120:
                str = "ldpi";
                break;
            case 160:
                str = "mdpi";
                break;
            case 213:
                str = "tvdpi";
                break;
            case 240:
                str = "hdpi";
                break;
            case 320:
                str = "xhdpi";
                break;
            case 480:
                str = "xxhdpi";
                break;
            case 640:
                str = "xxxhdpi";
                break;
            default:
                str = "N/A";
                break;
        }
        return densityDpi + " (" + str + ")";
    }

    private String getResolutionString(int rw, int rh) {
        return rw > rh ? "-" + rw + "x" + rh : "-" + rh + "x" + rw;
    }

    private String getSmallestWidthString(int dipWidth, int dipHeight) {
        StringBuilder stringBuilder = new StringBuilder("-sw");
        if (dipWidth >= dipHeight) {
            dipWidth = dipHeight;
        }
        return stringBuilder.append(dipWidth).append("dp").toString();
    }

}

Reference

Download full code here.
Follow code author here.

Example 2: DeviceInfo-Sample

Get easy access to device information super fast, real quick.

Simple, single class wrapper to get device information from an android device.

This library provides an easy way to access all the device information without having to deal with all the boilerplate stuff going on inside.

Library also provides option to ask permissions for Marshmellow devices!

Here are demo screenshots:


API

Step 1: Integrate the library

Gradle Dependecy

dependencies {
        implementation 'com.an.deviceinfo:deviceinfo:0.1.5'
}

Maven Dependecy

<dependency>
  <groupId>com.an.deviceinfo</groupId>
  <artifactId>deviceinfo</artifactId>
  <version>0.1.5</version>
  <type>pom</type>
</dependency>

Download

You can download the aar file from the release folder in this project.
In order to import a .aar library:
1) Go to File>New>New Module
2) Select "Import .JAR/.AAR Package" and click next.
3) Enter the path to .aar file and click finish.
4) Go to File>Project Settings (Ctrl+Shift+Alt+S).
5) Under "Modules," in left menu, select "app."
6) Go to "Dependencies tab.
7) Click the green "+" in the upper right corner.
8) Select "Module Dependency"
9) Select the new module from the list.

Step 2: Usage

For easy use, I have split up all the device information by the following:

  1. Location
  2. Ads
  3. App
  4. Battery
  5. Device
  6. Memory
  7. Network
  8. User Installed Apps
  9. User Contacts

    Location

    LocationInfo locationInfo = new LocationInfo(this);
    DeviceLocation location = locationInfo.getLocation();
    
    Value Function Name Returns
    Latitude getLatitude() Double
    Longitude getLongitude() Double
    Address Line 1 getAddressLine1() String
    City getCity() String
    State getState() String
    CountryCode getCountryCode() String
    Postal Code getPostalCode() String

    Ads

    No Google play services needed!

    AdInfo adInfo = new AdInfo(this);
    adInfo.getAndroidAdId(new new AdInfo.AdIdCallback() {
                         @Override
                         public void onResponse(Ad ad) {
                             String advertisingId = ad.getAdvertisingId();
                             Boolean canTrackAds = ad.isAdDoNotTrack();
                         }
                     });
    
    Value Function Name Returns
    AdvertisingId getAdvertisingId() String
    Can Track ads isAdDoNotTrack() boolean

    App

    App app = new App(this);
    
    Value Function Name Returns
    App Name getAppName() String
    Package Name getPackageName() String
    Activity Name getActivityName() String
    App Version Name getAppVersionName() String
    App Version Code getAppVersionCode() Integer

    Battery

    Battery battery = new Battery(this);
    
    Value Function Name Returns
    Battery Percent getBatteryPercent() int
    Is Phone Charging isPhoneCharging() boolean
    Battery Health getBatteryHealth() String
    Battery Technology getBatteryTechnology() String
    Battery Temperature getBatteryTemperature() float
    Battery Voltage getBatteryVoltage() int
    Charging Source getChargingSource() String
    Is Battery Present isBatteryPresent() boolean

    Device

    Device device = new Device(this);
    
    Value Function Name Returns
    Release Build Version getReleaseBuildVersion() String
    Build Version Code Name getBuildVersionCodeName() String
    Manufacturer getManufacturer() String
    Model getModel() String
    Product getProduct() String
    Fingerprint getFingerprint() String
    Hardware getHardware() String
    Radio Version getRadioVersion() String
    Device getDevice() String
    Board getBoard() String
    Display Version getDisplayVersion() String
    Build Brand getBuildBrand() String
    Build Host getBuildHost() String
    Build Time getBuildTime() long
    Build User getBuildUser() String
    Serial getSerial() String
    Os Version getOsVersion() String
    Language getLanguage() String
    SDK Version getSdkVersion() int
    Screen Density getScreenDensity() String
    Screen Height getScreenHeight() int
    Screen Density getScreenWidth() int

    Memory

    Memory memory = new Memory(this);
    
    Value Function Name Returns
    Has External SD Card isHasExternalSDCard() boolean
    Total RAM getTotalRAM() long
    Available Internal Memory Size getAvailableInternalMemorySize() long
    Total Internal Memory Size getTotalInternalMemorySize() long
    Available External Memory Size getAvailableExternalMemorySize() long
    Total External Memory Size getTotalExternalMemorySize() String

    Network

    Network network = new Network(this);
    
    Value Function Name Returns
    IMEI getIMEI() String
    IMSI getIMSI() String
    Phone Type getPhoneType() String
    Phone Number getPhoneNumber() String
    Operator getOperator() String
    SIM Serial getsIMSerial() String
    Network Class getNetworkClass() String
    Network Type getNetworkType() String
    Is SIM Locked isSimNetworkLocked() boolean
    Is Nfc Present isNfcPresent() boolean
    Is Nfc Enabled isNfcEnabled() boolean
    Is Wifi Enabled isWifiEnabled() boolean
    Is Network Available isNetworkAvailable() boolean

    User Installed Apps

    UserAppInfo userAppInfo = new UserAppInfo(this);
    List<UserApps> userApps = userAppInfo.getInstalledApps(boolean includeSystemApps);
    
    Value Function Name Returns
    App Name getAppName() String
    Package Name getPackageName() String
    Version Name getVersionName() String
    Version Code getVersionCode() int

    User Contacts

    UserContactInfo userContactInfo = new UserContactInfo(mActivity);
    List<UserContacts> userContacts = userContactInfo.getContacts();
    
    Value Function Name Returns
    Contact Name getDisplayName() String
    Mobile Number getMobileNumber() String
    Phone Type phoneType() String

    How to get Permissions for android 6+

    Easy! I have provided a small, easy wrapper for getting permissions for marshmellow devices.

First, override onRequestPermissionsResult and call PermissionManager.handleResult(requestCode, permissions, grantResults);

PermissionManager permissionManager = new PermissionManager(this);
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        permissionManager.handleResult(requestCode, permissions, grantResults);
    }

Now you can ask permission:

permissionManager.showPermissionDialog(permission)
                    .withDenyDialogEnabled(true)
                    .withDenyDialogMsg(mActivity.getString(R.string.permission_location))
                    .withCallback(new PermissionManager.PermissionCallback() {
                        @Override
                        public void onPermissionGranted(String[] permissions, int[] grantResults) {
                            //you can handle what to do when permission is granted
                        }

                        @Override
                        public void onPermissionDismissed(String permission) {
                           /**
                             * user has denied the permission. We can display a custom dialog 
                             * to user asking for permission
                           * */
                        }

                        @Override
                        public void onPositiveButtonClicked(DialogInterface dialog, int which) {
                          /**
                            * You can choose to open the
                            * app settings screen
                            * * */
                              PermissionUtils permissionUtils = new PermissionUtils(this);
                              permissionUtils.openAppSettings();
                        }

                        @Override
                        public void onNegativeButtonClicked(DialogInterface dialog, int which) {
                          /**
                            * The user has denied the permission!
                            * You need to handle this in your code
                            * * */
                        }
                    })
                    .build();

Various options available in PermissionManager

Value Function Name Returns
To enable custom dialog when user has denied the permission withDenyDialogEnabled() boolean
To enable Rationale, explaining the need for the permission, the first time they have denied the permission withRationaleEnabled() boolean
Message to be displayed in the custom dialog withDenyDialogMsg() String
Title to be displayed in the custom dialog withDenyDialogTitle() String
Postive Button text to be displayed in the custom alert dialog withDenyDialogPosBtnText() String
Negative Button text to be displayed in the custom alert dialog withDenyDialogNegBtnText() String
Should display the negative button flag withDenyDialogNegBtn() boolean
Flag to cancel the dialog isDialogCancellable() boolean

Reference

Read more here.
Download code here.
Follow code author here.

Example 3: Use appzy/DeviceInfo

Collect Android device information and output it in the form of Json

You can freely customize the type of device to be collected, the details of the displayed device information, etc.

Features

  • By inheriting BaseDeviceInfoCollectorclasses, cooperate DeviceInfoManagerto obtain any device information
  • By DeviceInfoManagermanaging each device information collector (hereinafter referred to as Collector), Collectors can be added freely to collect N kinds of software and hardware device information at the same time
  • Collector is divided into two collection methods: automatic collection and manual collection.
    • Automatic collection: Manager controls collection that occurs spontaneously
    • Manual collection: Data collection process that requires user interaction
  • Multiple Collectors managed by Manager do concurrent automatic collection, and manual collection can be configured to start automatically after the automatic collection action ends
  • Each Collector independently manages the permissions it needs and applies it in the Manager (SDK_VERSION >= 23)
  • You can choose to get the device information of all modules (Json), or you can choose to output only a single module (Json)
  • Provides rich status callback interfaces DeviceInfoCollectListener, which can monitor various statuses such as the end of collection

Currently available device information (only used as a template, it is recommended to customize it when using it):

  • Android device basic information (PhoneBasicInfoCollector)
  • Sim Card Information (SimInfoCollector)
    • Recognize multiple Sim cards at the same time
  • Board Information (BoardInfoCollector)
  • Cpu Information (CpuInfoCollector)
  • Battery Info (BatteryInfoCollector)
  • Screen Info (ScreenInfoCollector)
  • NFC information (NfcInfoCollector)
  • Sensor List (SensorInfoCollector)
  • Camera Info (CameraInfoCollector)
  • Storage Information (RAM & SD) (StorageInfoCollector)
  • Ui Information (UiInfoCollector)
  • System related information (Build.prop, etc.)z

Step 1: Add dependency library

  • Step 1.Add it in your root build.gradle at the end of repositories
        allprojects {
            repositories {
                ...
                maven { url 'https://jitpack.io' }
            }
        }
    
  • Step 2.Add the dependency
        dependencies {
                implementation 'com.github.guyuepeng:DeviceInfo:xxx'
        }
    

Step 2: Write Code

DeviceInfoManager.NewInstance(this)
        .addCollector(new PhoneBasicInfoCollector(this, "basic"))       //Andorid设备基本信息(PhoneBasicInfoCollector)
        .addCollector(new SimInfoCollector(this, "sim"))                //Sim卡信息(SimInfoCollector)同时识别多张Sim卡
        .addCollector(new CpuInfoCollector(this, "cpu"))                //Cpu信息(CpuInfoCollector)
        .addCollector(new BoardInfoCollector(this, "board"))            //主板信息(BoardInfoCollector)
        .addCollector(new BatteryInfoCollector(this, "battery"))        //电池信息(BatteryInfoCollector)
        .addCollector(new StorageInfoCollector(this, "storage"))        //存储信息(RAM & SD)(StorageInfoCollector)
        .addCollector(new CameraInfoCollector(this, "camera", true))    //摄像头信息(CameraInfoCollector)
        .addCollector(new ScreenInfoCollector(this, "screen"))          //屏幕信息(ScreenInfoCollector)
        .addCollector(new UiInfoCollector(this, "ui"))                  //Ui信息(UiInfoCollector)
        .addCollector(new SensorInfoCollector(this, "sensor"))          //传感器列表(SensorInfoCollector)
        .addCollector(new NfcInfoCollector(this, "nfc"))                //NFC信息(NfcInfoCollector)
        .addCollector(new SystemInfoCollector(this, "system"))          //系统相关信息(Build.prop等)
        .autoStartManualCollection(true)
        .bindListener(mDeviceInfoCollectListener)
        .start();

Default output:

{
    "board": {"boardName": "MSM8939"},
    "sim": [{
        "dataState": "0",
        "imsi": "460036820263837",
        "isNetworkRoaming": "false",
        "networkOperatorName": "China Telecom",
        "networkType": "14",
        "phoneType": "2",
        "simCountryIso": "cn",
        "simOperator": "46003",
        "simSerialNumber": "89860315844110607274",
        "simState": "0"
    }]
}

Full Example

Here is a full example:

MainActivity.java

package ltns.deviceinfo;

import android.os.Bundle;
import android.os.Environment;
import  android . os . Handler ;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import ltns.deviceinfo.utils.FileUtils;
import ltns.deviceinfo.utils.JsonUtils;
import ltns.deviceinfolib.DeviceInfoManager;
import ltns.deviceinfolib.collector.BatteryInfoCollector;
import ltns.deviceinfolib.collector.BoardInfoCollector;
import ltns.deviceinfolib.collector.CameraInfoCollector;
import ltns.deviceinfolib.collector.CpuInfoCollector;
import ltns.deviceinfolib.collector.NfcInfoCollector;
import ltns.deviceinfolib.collector.PhoneBasicInfoCollector;
import ltns.deviceinfolib.collector.ScreenInfoCollector;
import ltns.deviceinfolib.collector.SensorInfoCollector;
import ltns.deviceinfolib.collector.SimInfoCollector;
import ltns.deviceinfolib.collector.StorageInfoCollector;
import ltns.deviceinfolib.collector.SystemInfoCollector;
import ltns.deviceinfolib.collector.UiInfoCollector;
import ltns.deviceinfolib.collector.base.BaseDeviceInfoCollector;
import ltns.deviceinfolib.listener.DeviceInfoCollectListener;

/**
 * @date 创建时间:2018/1/8
 * @author appzy
 * @Description 获取设备信息
 * @version
 */
public class MainActivity extends AppCompatActivity {
    private static final int ERROR = 0;
    private static final int ALL_DONE = 1;
    private static final int ALL_AUTO_COMPLETED = 2;
    private static final int SINGLE_SUCCEED = 3;
    private static final int SINGLE_FAILED = 4;

    private String outputStr = "";

    private TextView tv;
    private Button btnStart, btnSave;
    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case SINGLE_SUCCEED:
                    tv.setText(tv.getText() + "n" + JsonUtils.jsonFormatter(((BaseDeviceInfoCollector) msg.obj).getJsonInfo()));
                    break;
                case SINGLE_FAILED:
                    tv.setText(tv.getText() + "n" + msg.obj.toString());
                    break;
                case ALL_DONE:
                    Toast.makeText(MainActivity.this, "采集完成", Toast.LENGTH_SHORT).show();
                    outputStr = ((DeviceInfoManager) msg.obj).getDeviceJsonInfo();
//                    Log.i("--->", outputStr);
                    tv.setText("Manager的输出Json:n" + JsonUtils.jsonFormatter(outputStr));
                    break;

            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        tv = (TextView) findViewById(R.id.textView);
        btnStart = (Button) findViewById(R.id.btn_start);
        btnStart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                tv.setText("");
                tv.setText("每个模块的Json数据");
                collectDeviceInfo();
            }
        });
        btnSave = (Button) findViewById(R.id.btn_save);
        btnSave.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (TextUtils.isEmpty(outputStr)) {
                    Toast.makeText(MainActivity.this, "先收集再保存", Toast.LENGTH_SHORT).show();
                    return;
                }
                String path = Environment.getExternalStorageDirectory().getPath() + "/DeviceInfo/";
                String fileName="deviceInfo.json";
                FileUtils.saveJsonAsFile(JsonUtils.jsonFormatter(outputStr), path,fileName);
                Toast.makeText(MainActivity.this, "保存完成,保存路径为:" + path, Toast.LENGTH_SHORT).show();
            }
        });
    }

    private DeviceInfoCollectListener mDeviceInfoCollectListener = new DeviceInfoCollectListener() {
        @Override
        public void onStart() {
            Toast.makeText(MainActivity.this, "开始采集", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onSingleSuccess(BaseDeviceInfoCollector mCollector) {
            Message m = new Message();
            m.what = SINGLE_SUCCEED;
            m.obj = mCollector;
            mHandler.sendMessage(m);

        }

        @Override
        public void onSingleFailure(BaseDeviceInfoCollector mCollector, String mErrorInfo) {
            Message m = new Message();
            m.what = SINGLE_FAILED;
            m.obj = mErrorInfo + "-->" + mCollector.getJsonInfo();
            mHandler.sendMessage(m);
        }

        @Override
        public void onAllDone(DeviceInfoManager mDeviceInfoManager) {
            Message m = new Message();
            m.what = ALL_DONE;
            m.obj = mDeviceInfoManager;
            mHandler.sendMessage(m);
        }

        @Override
        public void onAutoAllDone(DeviceInfoManager mDeviceInfoManager) {
        }
    };
/**
 * @date 创建时间:2018/1/8
 * @author appzy
 * @Description 目前可获取的设备信息(只作为模板用途,建议使用时自行定制)
 * @version
 */
    private void collectDeviceInfo() {
        DeviceInfoManager.NewInstance(this)
                .addCollector(new PhoneBasicInfoCollector(this, "basic"))       //Andorid设备基本信息(PhoneBasicInfoCollector)
                .addCollector(new SimInfoCollector(this, "sim"))                //Sim卡信息(SimInfoCollector)同时识别多张Sim卡
                .addCollector(new CpuInfoCollector(this, "cpu"))                //Cpu信息(CpuInfoCollector)
                .addCollector(new BoardInfoCollector(this, "board"))            //主板信息(BoardInfoCollector)
                .addCollector(new BatteryInfoCollector(this, "battery"))        //电池信息(BatteryInfoCollector)
                .addCollector(new StorageInfoCollector(this, "storage"))        //存储信息(RAM & SD)(StorageInfoCollector)
                .addCollector(new CameraInfoCollector(this, "camera", true))    //摄像头信息(CameraInfoCollector)
                .addCollector(new ScreenInfoCollector(this, "screen"))          //屏幕信息(ScreenInfoCollector)
                .addCollector(new UiInfoCollector(this, "ui"))                  //Ui信息(UiInfoCollector)
                .addCollector(new SensorInfoCollector(this, "sensor"))          //传感器列表(SensorInfoCollector)
                .addCollector(new NfcInfoCollector(this, "nfc"))                //NFC信息(NfcInfoCollector)
                .addCollector(new SystemInfoCollector(this, "system"))          //系统相关信息(Build.prop等)
                .autoStartManualCollection(true)
                .bindListener(mDeviceInfoCollectListener)
                .start();
    }
}

Find full code here.

Reference

Read more here.
Follow code author here.
Download code here.

Read Individually.