Android exit Program (lower)-Broadcast Mechanism

Android exit Program (lower)-Broadcast Mechanism
Overview:

Based on the previous blog 《Android exit Program (on)-singleton ModeWe learned how to exit our application by using singleton and loop traversal. This blog will solve the problem from another perspective-broadcast. That is, when receiving a broadcast that closes the Activity, it closes the current Activity.

Class chart display and description:

Authorization/y + zbrDwcuhozwvcD4KPHA + PGJyPgo8L3A + CjxoMT60 + sLryr7A/aO6PC9oMT4KPHA + authorization/authorization + MS6908rVysK8/authorization vadi + authorization "brush: java; "> public class BaseActivity extends Activity {public static final String TAG = BaseActivity. class. getName (); public static final String BROAD_CA ST_MESSAGE = TAG + ". BROAD_CAST_MESSAGE "; private ExitappReceiver mReceiver = null; @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); registerReceiver ();} private void registerReceiver () {IntentFilter filter = new IntentFilter (); try {if (mReceiver! = Null) {unregisterReceiver (mReceiver) ;}} catch (Exception e) {e. printStackTrace ();} mReceiver = new ExitappReceiver (); filter. addAction (BROAD_CAST_MESSAGE); registerReceiver (mReceiver, filter) ;}@ Override protected void onDestroy () {if (mReceiver! = Null) {unregisterReceiver (mReceiver);} super. onDestroy ();} class ExitappReceiver extends BroadcastReceiver {@ Override public void onReceive (Context context, Intent intent) {if (intent. getAction (). equals (BROAD_CAST_MESSAGE) {finish ();}}}}

2. trigger event:

public class TwoActivity extends BaseActivity {    private int getLayoutResID() {        return R.layout.activity_two;    }        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);                setContentView(getLayoutResID());                Button nextButton = (Button) findViewById(R.id.activity_two_button);        nextButton.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                sendBroadcast();            }        });    }        private void sendBroadcast() {        Intent intent = new Intent();        intent.setAction(BaseActivity.BROAD_CAST_MESSAGE);        sendBroadcast(intent);    }}