我试图按照固定时间间隔运行一些代码的示例given here。我使用了这个例子中的代码(将等待时间设置为1分钟),编译它,在我的手机上启动,在手机上停止应用程序,等待几分钟。
但是,没有显示Toast
,也没有任何日志条目。我还注意到Service.onStart
似乎已经折旧了。
示例中是否缺少某些内容?当应用程序的主要活动开始时,我是否需要注册?或者从我的应用程序中的其他位置调用它?或者清单中可能出现了问题?
AndroidManifest.xml
:
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mypackage.test" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application>
android:allowBackup="true"
android:icon="@mipmap/stoxx"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/Theme.AppCompat.Light" >
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".NewEntryActivity"
android:label="@string/menu_add"
android:theme="@style/AppTheme.NoActionBar"
/>
<activity
android:name=".UserSettingActivity"
android:label="@string/menu_add"
android:theme="@style/AppTheme.NoActionBar"
/>
<receiver
android:process=":remote"
android:name=".Alarm">
</receiver>
</application>
</manifest>
答案 0 :(得分:2)
您忘记在您的清单中加入服务。以下是所有适合我的项目,请查看。
这是我的清单:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.alarmmanager.just_me.alarmmanager">
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<application android:allowBackup="true" android:label="@string/app_name"
android:icon="@mipmap/ic_launcher" android:supportsRtl="true"
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:process=":remote" android:name=".Alarm"/>
<service android:name=".MyService"/>
</application>
这是警报:
public class Alarm extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent)
{
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
wl.acquire();
// Put here YOUR code.
Toast.makeText(context, "com.alarmmanager.just_me.alarmmanager.Alarm !!!!!!!!!!", Toast.LENGTH_LONG).show(); // For example
wl.release();
}
public void SetAlarm(Context context)
{
AlarmManager am =( AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(context, Alarm.class);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 1000 * 5, pi); // Millisec * Second
}
public void CancelAlarm(Context context)
{
Intent intent = new Intent(context, Alarm.class);
PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(sender);
}}
这是服务:
public class MyService extends Service
{
Alarm alarm = new Alarm();
public void onCreate()
{
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Log.d("!~!", "Service started.");
alarm.SetAlarm(this);
return START_STICKY;
}
@Override
public void onStart(Intent intent, int startId)
{
alarm.SetAlarm(this);
}
@Override
public IBinder onBind(Intent intent)
{
return null;
}
}
最后一个MainActivity:
public class MainActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = new Intent(this, MyService.class);
startService(intent);
}
}