Google GCMIntentService实例化

Question

可能重复:
Android RuntimeException:无法实例化服务

尝试启动并运行GCM,但我的设备正在发送注册请求,但没有从GCM服务器返回任何响应.下面我包括了我的清单和GCMIntentService定义,以及我对GCM服务器注册的调用.我一直在盯着它,所以我可能会遗漏一些明显的东西,如果是的话,我道歉.

欢迎所有想法!

这是我的清单:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="PACKAGE"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <permission android:name="PACKAGE.permission.C2D_MESSAGE" android:protectionLevel="signature" />
    <uses-permission android:name="PACKAGE.permission.C2D_MESSAGE" /> 
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <service android:name=".GCMIntentService" 
            android:enabled="true"/>

        <receiver
            android:name="com.google.android.gcm.GCMBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

                <category android:name="PACKAGE.GCMIntentService" />
            </intent-filter>
        </receiver>


        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

这是我的GCMIntentService来处理来自GCM的返回:

import com.google.android.gcm.GCMBaseIntentService;
import android.content.Context;
import android.content.Intent;
import android.util.Log;


public class GCMIntentService extends GCMBaseIntentService {
    public static String TAG = "GCMIntentService";

    public GCMIntentService(String senderId) {
        super(senderId);
        Log.d("GCMIntentService", senderId);
    }

    @Override
    protected void onError(Context arg0, String arg1) {
        Log.d("onError", arg1);
    }

    @Override
    protected boolean onRecoverableError(Context context, String errorId){
        Log.d("onRecoverableError", errorId);
        return false;
    }

    @Override
    protected void onMessage(Context arg0, Intent arg1) {
        Log.d("onMessage", String.valueOf(arg1));
    }

    @Override
    protected void onRegistered(Context arg0, String arg1) {
        Log.d("onRegistered", arg1);
    }

    @Override
    protected void onUnregistered(Context arg0, String arg1) {
        Log.d("onUnregistered", arg1);
    }
}

我尝试在我的主类的onCreate方法中注册以下内容:

GCMRegistrar.checkDevice(this);
GCMRegistrar.checkManifest(this);

final String regId = GCMRegistrar.getRegistrationId(this);
if (regId.equals("")) {
    GCMRegistrar.register(this, SENDER_ID);
} else {
    Log.d(TAG, "Already registered");
}

更新 我尝试了Raz的建议,我收到以下错误:

07-03 12:07:40.459: W/dalvikvm(341): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
07-03 12:07:40.508: E/AndroidRuntime(341): FATAL EXCEPTION: main
07-03 12:07:40.508: E/AndroidRuntime(341): java.lang.RuntimeException: Unable to instantiate service package.gcm2.GCMIntentService: java.lang.InstantiationException: package.gcm2.GCMIntentService
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.app.ActivityThread.handleCreateService(ActivityThread.java:2943)
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.app.ActivityThread.access$3300(ActivityThread.java:125)
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2087)
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.os.Looper.loop(Looper.java:123)
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.app.ActivityThread.main(ActivityThread.java:4627)
07-03 12:07:40.508: E/AndroidRuntime(341):  at java.lang.reflect.Method.invokeNative(Native Method)
07-03 12:07:40.508: E/AndroidRuntime(341):  at java.lang.reflect.Method.invoke(Method.java:521)
07-03 12:07:40.508: E/AndroidRuntime(341):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-03 12:07:40.508: E/AndroidRuntime(341):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-03 12:07:40.508: E/AndroidRuntime(341):  at dalvik.system.NativeStart.main(Native Method)
07-03 12:07:40.508: E/AndroidRuntime(341): Caused by: java.lang.InstantiationException: package.gcm2.GCMIntentService
07-03 12:07:40.508: E/AndroidRuntime(341):  at java.lang.Class.newInstanceImpl(Native Method)
07-03 12:07:40.508: E/AndroidRuntime(341):  at java.lang.Class.newInstance(Class.java:1429)
07-03 12:07:40.508: E/AndroidRuntime(341):  at android.app.ActivityThread.handleCreateService(ActivityThread.java:2940)
07-03 12:07:40.508: E/AndroidRuntime(341):  ... 10 more
07-03 12:08:34.560: I/Process(341): Sending signal. PID: 341 SIG: 9

Answer 1

在你的清单中试试这个:

<receiver
        android:name="com.google.android.gcm.GCMBroadcastReceiver"
        android:permission="com.google.android.c2dm.permission.SEND" >
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

            <category android:name="eimmer.liav.elucidate.gcm2" />
        </intent-filter>
    </receiver>

类别名称必须是您的应用程序包.

如果该服务是在同一个包的名称把它像你这样别人就改变你的真实包,而不是.GCMIntentService但你还需要extend和override的GCMBroadcastReceiver.

如果您的包不是eimmer.liav.elucidate.gcm2.GCMIntentService那么您必须扩展GCMBroadcastReceiver并覆盖函数getGCMIntentServiceClassName().在该函数中返回字符串示例中的真实包和类:eimmer.liav.example.GCMIntentService.

另外不要忘记将接收者名称更改为新名称.例:

 <receiver
        android:name="eimmer.liav.example.MyGCMBroadcastReceiver"
        android:permission="com.google.android.c2dm.permission.SEND" >
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

            <category android:name="eimmer.liav.elucidate.gcm2" />
        </intent-filter>
    </receiver>

进一步将您的服务名称更改为:

<service android:name="eimmer.liav.example.GCMIntentService" 
            android:enabled="true"/>

根据Google的另一件事,您需要将构造函数更改为默认构造函数并发送一些字符串,如下所示:

public GCMIntentService() {
        super("Test");
    }

据我所知,字符串并不重要.

玩得开心.

Answer 2

您的代码中出现的错误是在GCMIntentService中,您需要使用NO参数覆盖默认构造函数.要仍然传递senderID,请执行以下操作:

public static final String SENDER_ID = "sender-id-here";

public GCMIntentService() 
{
    super(SENDER_ID);
}

这很可能是人们的常见问题,因为eclipse会自动生成一个受保护的构造函数,并将String作为参数.

Answer 3

此意图服务将由GCMBroadcastReceiver(由GCM库提供)调用,如下一步所示.它必须是com.google.android.gcm.GCMBaseIntentService的子类,必须包含公共构造函数,并且应命名为my_app_package.GCMIntentService(除非您使用GCMBroadcastReceiver的子类来覆盖用于命名服务的方法).

你应该只覆盖getGCMIntentServiceClassName的方法GCMBroadcastReceiver类和设置自定义IntentService类名.然后修复AndroidManifest.xml.

您可以在此处找到更多详细信息和示例代码.