안드로이드 시스템 버튼(home, back, active apps) 오버라이드

출처

https://hackernoon.com/disable-android-home-back-and-active-apps-buttons-f7450dfeddcd

# active apps / reorder apps

androidmanifest.xml

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

activity

@Override

 protected void onPause() {

        super.onPause();

        ActivityManager activityManager = (ActivityManager) getApplicationContext()

                .getSystemService(Context.ACTIVITY_SERVICE);

        activityManager.moveTaskToFront(getTaskId(), 0);

}

# home

<category android:name="android.intent.category.LAUNCHER" />

<category android:name="android.intent.category.HOME" />

<category android:name="android.intent.category.DEFAULT" />

# back

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

    // Do nothing or catch the keys you want to block

}

or

@Override

public boolean onBackPressed(int keyCode, KeyEvent event) {

    // Do nothing or catch the keys you want to block

}