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Practical-13

Mobile Application​

Practical List​

Create an android application to pick any image from the native application gallery and display it on the screen.

Steps​

  1. Create a new Android project in Android Studio.
  2. Open the activity_main.xml layout file.
  3. Add an ImageView element to the layout with the following attributes:
    • android:id="@+id/imageView"
    • android:layout_width="match_parent"
    • android:layout_height="match_parent"
  4. Open the MainActivity.java file.
  5. Inside the onCreate method, add the following code to set the content view to the activity_main.xml layout: 
    setContentView(R.layout.activity_main);
  6. Create a new method called pickImage to open the image picker: 
    private void pickImage() {
        Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(intent, PICK_IMAGE_REQUEST);
    }
  7. Override the onActivityResult method to handle the result of the image picker: 
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null) {
            Uri imageUri = data.getData();
            ImageView imageView = findViewById(R.id.imageView);
            imageView.setImageURI(imageUri);
        }
    }
  8. Add the necessary permissions to the AndroidManifest.xml file: 
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  9. Run the application on an emulator or a physical device.
  10. Click the "Pick Image" button to open the image picker.
  11. Select an image from the gallery.
  12. The selected image will be displayed on the screen.