实际上,你不需要指定action,因为你在intent中使用了类AlarmReceiver.class
。
请确保在AndroidManifest.xml
文件中,在<application>
标签内部定义了一个接收器,如下所示:
<receiver android:name="AlarmReceiver">
编辑:
好的,有两种方式可以使用广播接收器。
1) 根据你提供的代码,AlarmReceiver.java
应该包含以下内容:
public final class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarm worked.", Toast.LENGTH_LONG).show();
}
}
以及HelloAndroid2.java
文件:
public class HelloAndroid2 extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (10 * 1000), pendingIntent);
Toast.makeText(this, "Alarm set", Toast.LENGTH_LONG).show();
}
}
通过这种方式,您可以设置广播接收器与AndroidManifest.xml
和标签<receiver ...>
一起工作。
2)第二种方法。使用此方法,您只需要使用1个文件HelloWorld2.java
:
在您的活动中,创建您的广播接收器并注册它。
public class HelloWorld2 extends Activity {
private SharedPreferences prefs;
private String mName;
BroadcastReceiver alarmReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarm worked", Toast.LENGTH_LONG).show();
}
};
public static final String ACTION_NAME = "com.helloworld.MYACTION";
private IntentFilter myFilter = new IntentFilter(ACTION_NAME);
@Override
protected void onPause() {
unregisterReceiver(alarmReceiver);
super.onPause();
}
@Override
protected void onResume() {
registerReceiver(alarmReceiver, myFilter);
super.onResume();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
registerReceiver(alarmReceiver, myFilter);
Intent intent = new Intent(ACTION_NAME);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (10 * 1000), pendingIntent);
Toast.makeText(this, "Alarm set", Toast.LENGTH_LONG).show();
}