- 先写了个Service,在服务中通过广播来监听HOME键操作:
- public class HomeService extends Service{
- private MonitoHomeReceiver mHomeBroadcastReceiver;
- @Override
- public IBinder onBind(Intent intent) {
- return null;
- }
- @Override
- public void onCreate() {
- super.onCreate();
- mHomeBroadcastReceiver = new MonitoHomeReceiver();
- /**
- * Android对屏幕下方常用按键消息处理是不一致的:
- * 1、搜索按键的消息在onKeyDown或者onKeyUp中接收;
- * 2、菜单按键的消息在onCreateOptionsMenu、onKeyDown或onKeyUp方法中接收;
- * 3、返回按键的消息可以在onBackPressed、onKeyDown或onKeyUp方法中接收。
- * 对于Home按键消息的处理,既不能通过onKeyDown、onKeyUp接收到,android也没有提供专有的方法接收按键消息
- * 但办法总是有的,点击Home按键时都会发出一个action为Intent.ACTION_CLOSE_SYSTEM_DIALOGS的广播,通过注册它来监听Home按键消息
- */
- IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
- registerReceiver(mHomeBroadcastReceiver, homeFilter);
- }
- public class MonitoHomeReceiver extends BroadcastReceiver{
- final String HOME_DIALOG_REASON = "homereason";
- final String HOME_DIALOG_REASON_HOME = "homekey";
- @Override
- public void onReceive(Context context, Intent intent) {
- String action = intent.getAction();
- if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
- String reason = intent.getStringExtra(HOME_DIALOG_REASON);
- if (reason != null && reason.equals(HOME_DIALOG_REASON_HOME)) {
- Toast.makeText(getApplicationContext(), "点击Home键", Toast.LENGTH_SHORT).show();
- return;
- }
- }
- }
- }
- @Override
- public void onDestroy() {
- unregisterReceiver(mHomeBroadcastReceiver);
- mHomeBroadcastReceiver = null;
- super.onDestroy();
- }
- }
- 然后在Activity中启动Service:
- public class MainActivity extends Activity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- /**按钮点击事件*/
- findViewById(R.id.test_home_btn).setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- Intent intent = new Intent(MainActivity.this,HomeService.class);
- startService(intent);
- }
- });
- }
- }
- 最后就是个简单的布局文件:
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:orientation="vertical" >
- <Button
- android:id="@+id/test_home_btn"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:text="测试Home键" />
- </LinearLayout>
- 最后不要忘记在AndroidManifest.xml中用<Service></Service>标签注册HomeService 服务。
来源: http://www.phpxs.com/code/1001837/