我正在尝试使用android中的AlarmManager
。我有以下代码,应该从单击按钮时设置警报3秒。我没有收到任何错误,但我的AlarmReceiver
中的代码从未被触发过。
这是我的活动:
public class MainActivity extends ActionBarActivity {
private Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.context = this;
Button setAlarm = (Button) findViewById(R.id.button1);
setAlarm.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("MAIN", "SETTING ALARM");
AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, AlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 3000, pi);
Log.i("MAIN", "ALARM SET");
}
});
}
}
这是我的接收者:
public class AlarmReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
Log.i("ALARM RECEIVER", "ALARM RECEIVED");
Toast.makeText(context, "Alarm worked.", Toast.LENGTH_LONG).show();
}
}
这是我的表现:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.alarm"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".AlarmReciever"/>
</application>
</manifest>
我在logcat中看到闹钟设置输出,所以我知道它已经超过我实际设置闹钟的点,但我的闹钟接收器永远不会被调用。任何帮助将不胜感激。