Android 警报管理器崩溃了

我使用以下代码

public class Live extends ActionBarActivity {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_live);

        Long time = new GregorianCalendar().getTimeInMillis()+10*1000;

        Intent intentAlarm = new Intent(this, AlarmReceiver.class);

        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmIntent=PendingIntent.getBroadcast(this, 1, intentAlarm, 0);

        alarmManager.set(AlarmManager.RTC_WAKEUP,time, alarmIntent);

        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),1000 * 10, alarmIntent);

        Toast.makeText(this, "Alarm Manager calling....", Toast.LENGTH_LONG).show();
}

在我的清单文件中，我还包括以下行

我的AlarmReceiver类就是shows Toast

public class AlarmReceiver extends BroadcastReceiver
{
@Override
    public void onReceive(Context context, Intent intent)
    {
                 Toast.makeText(context,"Alarm ringing",Toast.LENGTH_SHORT).show();
    }
}

所以，当我启动应用程序时，它会给我null指针异常日志cat is

    05-07 14:27:49.192: E/AndroidRuntime(17793): FATAL EXCEPTION: main
05-07 14:27:49.192: E/AndroidRuntime(17793): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.livestream/com.example.livestream.Live}: java.lang.NullPointerException
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2114)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.ActivityThread.access$700(ActivityThread.java:143)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.os.Handler.dispatchMessage(Handler.java:99)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.os.Looper.loop(Looper.java:137)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.ActivityThread.main(ActivityThread.java:4960)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at java.lang.reflect.Method.invokeNative(Native Method)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at java.lang.reflect.Method.invoke(Method.java:511)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at dalvik.system.NativeStart.main(Native Method)
05-07 14:27:49.192: E/AndroidRuntime(17793): Caused by: java.lang.NullPointerException
05-07 14:27:49.192: E/AndroidRuntime(17793):    at com.example.livestream.Live.onCreate(Live.java:63)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.Activity.performCreate(Activity.java:5203)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
05-07 14:27:49.192: E/AndroidRuntime(17793):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2078)
05-07 14:27:49.192: E/AndroidRuntime(17793):    ... 11 more

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您能告诉我哪里出了问题吗？？？

您应该尝试删除set方法

如果要重复服务，请仅使用setRepeating，否则请删除setRepeating

在此之后，必须创建一个扩展IntentService的类，并在HandleContent上插入方法

之后，在Receiver类上，重写onReceiver方法并插入调用服务的意图

Intent i = new Intent(context,IntentService);
context.startService(i);

在最后一步中，将服务信息添加到清单中，就像接收方一样

<service android:name=".name of your class"
    android:exported="true" />  <-I write also this

---

Live.java的第63行出现了什么？你在那边撞车了！是alarmManager.setRepeatingAlarmManager.RTC_WAKEUP，calendar.getTimeInMillis，1000*10，alarmIntent；63线？检查日历中的null@Suvitruf：谢谢你的帮助。。。我没有初始化日历。。。

Intent i = new Intent(context,IntentService);
context.startService(i);

<service android:name=".name of your class"
    android:exported="true" />  <-I write also this