Example usage for android.app Activity dispatchKeyEvent

Introduction

In this page you can find the example usage for android.app Activity dispatchKeyEvent.

Prototype

public boolean dispatchKeyEvent(KeyEvent event) 

Source Link

Document

Called to process key events.

Usage

From source file:com.android.tv.TvApplication.java

/**
 * Handles the global key KEYCODE_TV_INPUT.
 *//*from w  w w.j  av a 2 s  .c om*/
public void handleTvInputKey() {
    TvInputManager tvInputManager = (TvInputManager) getSystemService(Context.TV_INPUT_SERVICE);
    List<TvInputInfo> tvInputs = tvInputManager.getTvInputList();
    int inputCount = 0;
    boolean hasTunerInput = false;
    for (TvInputInfo input : tvInputs) {
        if (input.isPassthroughInput()) {
            if (!input.isHidden(this)) {
                ++inputCount;
            }
        } else if (!hasTunerInput) {
            hasTunerInput = true;
            ++inputCount;
        }
    }
    if (inputCount < 2) {
        return;
    }
    Activity activityToHandle = mMainActivityWrapper.isResumed() ? mMainActivityWrapper.getMainActivity()
            : mSelectInputActivity;
    if (activityToHandle != null) {
        // If startActivity is called, MainActivity.onPause is unnecessarily called. To
        // prevent it, MainActivity.dispatchKeyEvent is directly called.
        activityToHandle.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_TV_INPUT));
        activityToHandle.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_TV_INPUT));
    } else if (mMainActivityWrapper.isStarted()) {
        Bundle extras = new Bundle();
        extras.putString(Utils.EXTRA_KEY_ACTION, Utils.EXTRA_ACTION_SHOW_TV_INPUT);
        startMainActivity(extras);
    } else {
        startActivity(new Intent(this, SelectInputActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
    }
}

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