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How to restrict ImagePicker to only show specific image types in Kotlin Android

How to restrict ImagePicker to only show specific image types in Kotlin Android.

Here's a step-by-step tutorial on how to restrict the ImagePicker to only show specific image types in Kotlin Android:

Step 1: Add the necessary dependencies​

First, make sure you have the necessary dependencies added to your project. Open your app-level build.gradle file and add the following dependencies:

implementation 'androidx.core:core-ktx:1.6.0'
implementation 'com.github.dhaval2404:imagepicker:1.7.3'

Step 2: Request necessary permissions​

To access the device's gallery and camera, you need to request the necessary permissions in your AndroidManifest.xml file. Add the following lines to your manifest file:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />

Step 3: Create a file provider​

To access the image files from the device's storage, you need to create a file provider in your AndroidManifest.xml file. Add the following lines within the <application> tag:

<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="${applicationId}.provider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths" />
</provider>

Step 4: Create a file_paths.xml file​

In the res/xml/ directory, create a new file called file_paths.xml and add the following code:

<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-files-path
        name="my_images"
        path="Pictures" />
</paths>

Step 5: Set up the ImagePicker library​

In your activity or fragment, import the necessary classes and set up the ImagePicker library. Here's an example of how you can do it:

import com.github.dhaval2404.imagepicker.ImagePicker
import com.github.dhaval2404.imagepicker.constant.ImageProvider
import com.github.dhaval2404.imagepicker.listener.ImageResultListener

// ...

val imagePicker = ImagePicker.with(this)
    .crop() // Enable image cropping
    .compress(1024) // Set maximum image size in KB
    .maxResultSize(1080, 1080) // Set maximum image resolution
    .start()

// Handle the image selection result
imagePicker.get { resultCode, imagePath ->
    if (resultCode == ImagePicker.RESULT_OK) {
        // Process the selected image
        // ...
    } else if (resultCode == ImagePicker.RESULT_ERROR) {
        // Handle error
        // ...
    } else {
        // User canceled the image selection
        // ...
    }
}

Step 6: Restrict image types​

To restrict the ImagePicker to only show specific image types, you can use the filterMimeType method. Pass in an array of allowed MIME types as shown in the example below:

val allowedMimeTypes = arrayOf("image/jpeg", "image/png")

val imagePicker = ImagePicker.with(this)
    .filterMimeType(allowedMimeTypes)
    // ... (other configuration options)
    .start()

This will ensure that only JPEG and PNG images are shown in the ImagePicker.

And that's it! You have successfully restricted the ImagePicker to only show specific image types in Kotlin Android. Feel free to customize the allowed MIME types and the ImagePicker configuration options to suit your needs.