Question

我的程序是实现BroadcastReceiver来设置Alarm。但我遇到了问题：在设定闹钟时间后，我关闭设备电源。之后，我启动设备和BroadcastReceiver的onReceive（）函数总是调用。这是我的代码：

    <receiver android:name="com.futaba.broadcastservice.AlarmBroadCastReceiver"
    >
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"></action>
        </intent-filter>
    </receiver>

如何解决此问题？

先谢谢。

Answer 1

您是否阅读过BOOT_COMPLETED的文档？它将在系统完成启动时运行。

Answer 2

这是重启后重新安排闹钟的方法。

代码在您的接收器上。

public class AlarmBroadCastReceiver extends BroadcastReceiver {


Context ct;

@Override
public void onReceive(Context context, Intent intent) 
{
ct=context;
if(intent.getAction().equals("android.intent.action.BOOT_COMPLETED"))
 {
  Intent contentIntent = new Intent(ct, AlarmBroadCastReceiver.class); 
  PendingIntent theappIntent = PendingIntent.getService(ct, 0,contentIntent, 0); 
  Calendar calendar = Calendar.getInstance();
  calendar.set(year, month, day, hour,minute); 
  AlarmManager am = (AlarmManager) ct.getSystemService(ALARM_SERVICE);
  am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), theappIntent); 
 }
}

为了确保您必须声明uses-permission如下

 <application android:icon="@drawable/icon" android:label="@string/app_name">

    <receiver android:name="com.futaba.broadcastservice.AlarmBroadCastReceiver">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>
</application>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>

在重启设备时始终调用BroadcastReceiver的onReceive（）函数

2 个答案: