我有一个问题,我希望有一些东西能够指出它出现的原因。我硬编码了我希望报警触发的日期,并且在第一次运行应用时,它只会及时触发该实例。但是,一旦警报被触发,每次应用程序打开时,警报都会不断闪烁并显示通知。这只是一个小的应用程序测试将作为一个更大的应用程序的一部分,并希望有人能帮助我,请当应用程序打开时,闹钟管理器保持开机状态
package com.example.alarmtest;
import java.util.Calendar;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.view.Menu;
public class MainActivity extends Activity {
private PendingIntent pendingIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.MONTH, Calendar.FEBRUARY);
calendar.set(Calendar.YEAR, 2014);
calendar.set(Calendar.DAY_OF_MONTH, 12);
calendar.set(Calendar.HOUR_OF_DAY, 2);
calendar.set(Calendar.MINUTE, 26);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.AM_PM,Calendar.PM);
Intent myIntent = new Intent(MainActivity.this, MyReceiver.class);
pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, myIntent,0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC, calendar.getTimeInMillis(), pendingIntent);
}
}
package com.example.alarmtest;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
public class MyAlarmService extends Service {
private NotificationManager mManager;
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
}
@SuppressWarnings("deprecation")
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
mManager = (NotificationManager) this.getApplicationContext().getSystemService(this.getApplicationContext().NOTIFICATION_SERVICE);
Intent intent1 = new Intent(this.getApplicationContext(),MainActivity.class);
Notification notification = new Notification(R.drawable.ic_launcher,"This is a test message!", System.currentTimeMillis());
intent1.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP| Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingNotificationIntent = PendingIntent.getActivity(this.getApplicationContext(),0, intent1,PendingIntent.FLAG_UPDATE_CURRENT);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notification.setLatestEventInfo(this.getApplicationContext(), "AlarmManagerDemo", "This is a test message!", pendingNotificationIntent);
mManager.notify(0, notification);
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy()
{
// TODO Auto-generated method stub
super.onDestroy();
}
}
package com.example.alarmtest;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent arg1) {
Intent service1 = new Intent(context, MyAlarmService.class);
context.startService(service1);
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.alarmtest"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.alarmtest.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>
<activity
android:name="com.example.alarmtest.NextActivity"
android:label="Next Screen">
</activity>
<service android:name="com.example.alarmtest.MyAlarmService"
android:enabled="true" />
<receiver android:name=".MyReceiver"/>
</application>
</manifest>
不要使用您的灵敏度的onCreate来创建闹钟,这将比您想象的要频繁得多。我建议您查看关于应用程序/活动生命周期的API文档。 – kasoban
触发警报后,将Calendar.DAY_OF_MONTH设置为“明天”。 –
你解决了这个问题吗?我有相同的:( –