Android : Handle back button click when keyboard is open for EditText

Question

When I am writing something in EdiText and pressing the back button, it is hiding the keyboard, which is perfect. But I want to handle this Back Button Click when Keyboard is open for EditText. The reason is I want to clear EditText's text when the back button is pressed when the keyboard is open.

Activity method onBackPressed() is not called when keyboard is open for EditText.

I checked here but didn't help though.

Any help would be appreciated.

Answer 1

I did few modifications to @GuanHongHuang's answer and now I am able to do this by these 3 steps:

1. Creating Custom EditText Class to handle Back Press:

public class CustomEditTextWithBackPressEvent extends androidx.appcompat.widget.AppCompatEditText {

private MyEditTextListener onBackPressListener;

public CustomEditTextWithBackPressEvent(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public void setOnBackPressListener(MyEditTextListener onBackPressListener) {
    this.onBackPressListener = onBackPressListener;
}

@Override
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK &&
            event.getAction() == KeyEvent.ACTION_UP) {
        //back button pressed
        if (Objects.requireNonNull(ViewCompat.getRootWindowInsets(getRootView())).isVisible(WindowInsetsCompat.Type.ime())) {
            //keyboard is open
            onBackPressListener.callback();
        }
        return false;
    }
    return super.dispatchKeyEvent(event);
}

public interface MyEditTextListener {
    void callback();
}

}

2. Replace your normal EditText with this CustomEditTextWithBackPressEvent in XML

<CustomEditTextWithBackPressEvent
    android:id="@+id/etSearch"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/search_hint"
    android:imeOptions="actionSearch"
    android:inputType="text"
    android:maxLines="1" />

3. Handle Back Press:

binding.etSearch.setOnBackPressListener(() -> {
        //handle click
        //your code here
    });