Soft keyboard open and close listener in an activity in Android
This only works when android:windowSoftInputMode
of your activity is set to adjustResize
in the manifest. You can use a layout listener to see if the root layout of your activity is resized by the keyboard.
I use something like the following base class for my activities:
public class BaseActivity extends Activity {
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int heightDiff = rootLayout.getRootView().getHeight() - rootLayout.getHeight();
int contentViewTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(BaseActivity.this);
if(heightDiff <= contentViewTop){
onHideKeyboard();
Intent intent = new Intent("KeyboardWillHide");
broadcastManager.sendBroadcast(intent);
} else {
int keyboardHeight = heightDiff - contentViewTop;
onShowKeyboard(keyboardHeight);
Intent intent = new Intent("KeyboardWillShow");
intent.putExtra("KeyboardHeight", keyboardHeight);
broadcastManager.sendBroadcast(intent);
}
}
};
private boolean keyboardListenersAttached = false;
private ViewGroup rootLayout;
protected void onShowKeyboard(int keyboardHeight) {}
protected void onHideKeyboard() {}
protected void attachKeyboardListeners() {
if (keyboardListenersAttached) {
return;
}
rootLayout = (ViewGroup) findViewById(R.id.rootLayout);
rootLayout.getViewTreeObserver().addOnGlobalLayoutListener(keyboardLayoutListener);
keyboardListenersAttached = true;
}
@Override
protected void onDestroy() {
super.onDestroy();
if (keyboardListenersAttached) {
rootLayout.getViewTreeObserver().removeGlobalOnLayoutListener(keyboardLayoutListener);
}
}
}
The following example activity uses this to hide a view when the keyboard is shown and show it again when the keyboard is hidden.
The xml layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<!-- omitted for brevity -->
</ScrollView>
<LinearLayout android:id="@+id/bottomContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<!-- omitted for brevity -->
</LinearLayout>
</LinearLayout>
And the activity:
public class TestActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_activity);
attachKeyboardListeners();
}
@Override
protected void onShowKeyboard(int keyboardHeight) {
// do things when keyboard is shown
bottomContainer.setVisibility(View.GONE);
}
@Override
protected void onHideKeyboard() {
// do things when keyboard is hidden
bottomContainer.setVisibility(View.VISIBLE);
}
}
How to capture the virtual keyboard show/hide event in Android?
2020 Update
This is now possible:
On Android 11, you can do
view.setWindowInsetsAnimationCallback(object : WindowInsetsAnimation.Callback {
override fun onEnd(animation: WindowInsetsAnimation) {
super.onEnd(animation)
val showingKeyboard = view.rootWindowInsets.isVisible(WindowInsets.Type.ime())
// now use the boolean for something
}
})
You can also listen to the animation of showing/hiding the keyboard and do a corresponding transition.
I recommend reading Android 11 preview and the corresponding documentation
Before Android 11
However, this work has not been made available in a Compat
version, so you need to resort to hacks.
You can get the window insets and if the bottom insets are bigger than some value you find to be reasonably good (by experimentation), you can consider that to be showing the keyboard. This is not great and can fail in some cases, but there is no framework support for that.
This is a good answer on this exact question https://stackoverflow.com/a/36259261/372076. Alternatively, here's a page giving some different approaches to achieve this pre Android 11:
https://developer.salesforce.com/docs/atlas.en-us.noversion.service_sdk_android.meta/service_sdk_android/android_detecting_keyboard.htm
Note
This solution will not work for soft keyboards and
onConfigurationChanged
will not be called for soft (virtual)
keyboards.
You've got to handle configuration changes yourself.
http://developer.android.com/guide/topics/resources/runtime-changes.html#HandlingTheChange
Sample:
// from the link above
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Checks whether a hardware keyboard is available
if (newConfig.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO) {
Toast.makeText(this, "keyboard visible", Toast.LENGTH_SHORT).show();
} else if (newConfig.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) {
Toast.makeText(this, "keyboard hidden", Toast.LENGTH_SHORT).show();
}
}
Then just change the visibility of some views, update a field, and change your layout file.
Soft keyboard open and close listener in an activity in Android
This only works when android:windowSoftInputMode
of your activity is set to adjustResize
in the manifest. You can use a layout listener to see if the root layout of your activity is resized by the keyboard.
I use something like the following base class for my activities:
public class BaseActivity extends Activity {
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int heightDiff = rootLayout.getRootView().getHeight() - rootLayout.getHeight();
int contentViewTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(BaseActivity.this);
if(heightDiff <= contentViewTop){
onHideKeyboard();
Intent intent = new Intent("KeyboardWillHide");
broadcastManager.sendBroadcast(intent);
} else {
int keyboardHeight = heightDiff - contentViewTop;
onShowKeyboard(keyboardHeight);
Intent intent = new Intent("KeyboardWillShow");
intent.putExtra("KeyboardHeight", keyboardHeight);
broadcastManager.sendBroadcast(intent);
}
}
};
private boolean keyboardListenersAttached = false;
private ViewGroup rootLayout;
protected void onShowKeyboard(int keyboardHeight) {}
protected void onHideKeyboard() {}
protected void attachKeyboardListeners() {
if (keyboardListenersAttached) {
return;
}
rootLayout = (ViewGroup) findViewById(R.id.rootLayout);
rootLayout.getViewTreeObserver().addOnGlobalLayoutListener(keyboardLayoutListener);
keyboardListenersAttached = true;
}
@Override
protected void onDestroy() {
super.onDestroy();
if (keyboardListenersAttached) {
rootLayout.getViewTreeObserver().removeGlobalOnLayoutListener(keyboardLayoutListener);
}
}
}
The following example activity uses this to hide a view when the keyboard is shown and show it again when the keyboard is hidden.
The xml layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<!-- omitted for brevity -->
</ScrollView>
<LinearLayout android:id="@+id/bottomContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<!-- omitted for brevity -->
</LinearLayout>
</LinearLayout>
And the activity:
public class TestActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_activity);
attachKeyboardListeners();
}
@Override
protected void onShowKeyboard(int keyboardHeight) {
// do things when keyboard is shown
bottomContainer.setVisibility(View.GONE);
}
@Override
protected void onHideKeyboard() {
// do things when keyboard is hidden
bottomContainer.setVisibility(View.VISIBLE);
}
}
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