Question

我编写了一个启动接收器来启动服务，但服务没有启动。我甚至认为广播接收器没有收到任何意图。

我设置了权限

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

我在清单中声明了接收器

<receiver android:name=".ServiceStarter">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED"/>
    </intent-filter>
</receiver>

这是我的广播接收器类。启动后我没有在这个类中记录任何输出。

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class ServiceStarter extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Intent i = new Intent("com.prac.test.MyPersistingService");
        i.setClass(context, MyPersistingService.class);
        context.startService(i);

        Log.v("TAG","Broadcast received"); //Doesn't print anything
    }
}

这是我的服务类。启动后没有显示任何Toast。

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

public class MyPersistingService extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        Toast.makeText(this, "Service created!", Toast.LENGTH_LONG).show();         //Doesn't show up
    }

    @Override
    public void onDestroy() {
        Toast.makeText(this, "Service stopped", Toast.LENGTH_LONG).show();          //Doesn't show up
    }

    @Override
    public void onStart(Intent intent, int startid) {
        Toast.makeText(this, "Service started by user.", Toast.LENGTH_LONG).show(); //Doesn't show up
        Log.v("TAG", "Service started");
    }
}

Answer 1

试试这个：

<receiver android:name=".ServiceStarter" android:enabled="true" >
    <intent-filter>
       <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

Answer 2

如果仍然无效，请尝试此

 <receiver
    android:name=".ServiceStarter"
    android:enabled="true"
    android:permission="android.permission.RECEIVE_BOOT_COMPLETED" >
     <intent-filter>
       <action android:name="android.intent.action.BOOT_COMPLETED" />    
       <category android:name="android.intent.category.DEFAULT" />
     </intent-filter>
 </receiver>

祝你好运

Answer 3

你的服务很可能正在启动，但在它可以做任何有意义的事情之前就被杀死了。尝试获取partial wake lock - Mark Murphy为此专门写了handy set of classes。

启动完成后服务无法启动

3 个答案: