Android Google云消息示例主线程

Android Google云消息示例主线程,android,google-cloud-messaging,android-build,Android,Google Cloud Messaging,Android Build,我对Google云到设备的消息传递示例有一个问题。我遵循此处的说明()因为这是我创建项目时Android Build给出的说明。按照说明,我创建了注册和接收消息所需的类。寄存器是作为AsyncTask创建的,并从我的主应用程序的OnCreate方法调用。我遇到的问题是,每次它运行时,我都会得到一个IOException:主线程。我尝试将代码更改为可运行,但没有运气,我只是得到了相同的错误。我在文档中读到的所有内容都表明我所做的应该是可行的,所以我不明白为什么不行 下面是显示错误和堆栈跟踪的Log

我对Google云到设备的消息传递示例有一个问题。我遵循此处的说明()因为这是我创建项目时Android Build给出的说明。按照说明,我创建了注册和接收消息所需的类。寄存器是作为AsyncTask创建的,并从我的主应用程序的OnCreate方法调用。我遇到的问题是,每次它运行时,我都会得到一个IOException:主线程。我尝试将代码更改为可运行,但没有运气,我只是得到了相同的错误。我在文档中读到的所有内容都表明我所做的应该是可行的,所以我不明白为什么不行

下面是显示错误和堆栈跟踪的Logcat转储

10-19 13:04:21.637 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ java.io.IOException: MAIN_THREAD 10-19 13:04:21.637 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at com.google.android.gms.gcm.GoogleCloudMessaging.register(Unknown Source) 10-19 13:04:21.647 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at com.hillbilly.kidslauncher.GcmRegistrationAsyncTask.doInBackground(GcmRegistrationAsyncTask.java:75) 10-19 13:04:21.647 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at com.hillbilly.kidslauncher.MainActivity.onCreate(MainActivity.java:43) 10-19 13:04:21.657 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.Activity.performCreate(Activity.java:5008) 10-19 13:04:21.657 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 10-19 13:04:21.667 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 10-19 13:04:21.667 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 10-19 13:04:21.677 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.ActivityThread.access$600(ActivityThread.java:130) 10-19 13:04:21.677 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 10-19 13:04:21.677 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:99) 10-19 13:04:21.687 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.os.Looper.loop(Looper.java:137) 10-19 13:04:21.687 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:4745) 10-19 13:04:21.697 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method) 10-19 13:04:21.697 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:511) 10-19 13:04:21.707 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 10-19 13:04:21.707 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 10-19 13:04:21.717 1291-1291/com.hillbilly.kidslauncher W/System.err﹕ at dalvik.system.NativeStart.main(Native Method) 注册班

package com.hillbilly.kidslauncher;
import android.content.Context;
import android.os.AsyncTask;
import android.widget.Toast;
import com.appspot.kidslauncherparent.registration.Registration;
import com.google.android.gms.gcm.GoogleCloudMessaging;
import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.extensions.android.json.AndroidJsonFactory;
import com.google.api.client.googleapis.services.AbstractGoogleClientRequest;
import com.google.api.client.googleapis.services.GoogleClientRequestInitializer;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
 * Created by craighillbeck on 19/10/2014.
 */
public class GcmRegistrationAsyncTask extends AsyncTask<Context, Void, String> {
private GoogleCloudMessaging gcm;
    private Context context;
    private Registration regService = null;

    // TODO: change to your own sender ID to Google Developers Console project number, as per instructions above
    private static final String SENDER_ID = "978823093525";

    /**
     * Override this method to perform a computation on a background thread. The
     * specified parameters are the parameters passed to {@link #execute}
     * by the caller of this task.
     * <p/>
     * This method can call {@link #publishProgress} to publish updates
     * on the UI thread.
     *
     * @param params The parameters of the task.
     *
     * @return A result, defined by the subclass of this task.
     *
     * @see #onPreExecute()
     * @see #onPostExecute
     * @see #publishProgress
     */
    @Override
    protected String doInBackground(Context... params) {
        context = params[0];
        if (regService == null) {
            Registration.Builder builder = new Registration.Builder(
                    AndroidHttp.newCompatibleTransport(),
                    new AndroidJsonFactory(), null)
                    // Need setRootUrl and setGoogleClientRequestInitializer only for local testing,
                    // otherwise they can be skipped
                    .setRootUrl("http://10.0.2.2:8080/_ah/api/")
                    .setGoogleClientRequestInitializer(new GoogleClientRequestInitializer() {
                        @Override
                        public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest)
                                throws IOException {
                            abstractGoogleClientRequest.setDisableGZipContent(true);
                        }
                    });
            // end of optional local run code
            builder.setApplicationName(context.getString(R.string.app_name));
            regService = builder.build();
        }



        String msg = "";
        try {
            if (gcm == null) {
                gcm = GoogleCloudMessaging.getInstance(context);
            }
            String regId = gcm.register(SENDER_ID);
            msg = "Device registered, registration ID=" + regId;

            // You should send the registration ID to your server over HTTP,
            // so it can use GCM/HTTP or CCS to send messages to your app.
            // The request to your server should be authenticated if your app
            // is using accounts.
            regService.register(regId).execute();

        } catch (IOException ex) {
            ex.printStackTrace();
            msg = "Error: " + ex.getMessage();
        }
        return msg;
    }


    /**
     * <p>Runs on the UI thread after {@link #doInBackground}. The
     * specified result is the value returned by {@link #doInBackground}.</p>
     * <p/>
     * <p>This method won't be invoked if the task was cancelled.</p>
     *
     * @param msg The result of the operation computed by {@link #doInBackground}.
     *
     * @see #onPreExecute
     * @see #doInBackground
     * @see #onCancelled(Object)
     */
    @Override
    protected void onPostExecute(String msg) {
        Toast.makeText(context, msg, Toast.LENGTH_LONG).show();
        Logger.getLogger("REGISTRATION").log(Level.INFO, msg);
    }
}
package com.hillbilly.kidslancher;
导入android.content.Context;
导入android.os.AsyncTask;
导入android.widget.Toast;
导入com.appspot.kidslancerparent.registration.registration;
导入com.google.android.gms.gcm.GoogleCloudMessaging;
导入com.google.api.client.extensions.android.http.AndroidHttp;
导入com.google.api.client.extensions.android.json.AndroidJsonFactory;
导入com.google.api.client.googleapis.services.AbstractGoogleClientRequest;
导入com.google.api.client.googleapis.services.GoogleClientRequestInitializer;
导入java.io.IOException;
导入java.util.logging.Level;
导入java.util.logging.Logger;
/**
*craighillbeck于2014年10月19日创作。
*/
公共类GcmRegistrationAsyncTask扩展了AsyncTask{
私有谷歌云通讯gcm;
私人语境;
私人注册服务=null;
//TODO:按照上面的说明,将您自己的发件人ID更改为Google开发者控制台项目编号
私有静态最终字符串发送器_ID=“978823093525”;
/**
*重写此方法以在后台线程上执行计算
*指定的参数是传递给{@link#execute}的参数
*由此任务的调用方执行。
*

*此方法可以调用{@link#publishProgress}来发布更新 *在UI线程上。 * *@param params任务的参数。 * *@返回此任务的子类定义的结果。 * *@see#onPreExecute() *@see#onpost执行 *@see#出版进度 */ @凌驾 受保护字符串doInBackground(上下文…参数){ 上下文=参数[0]; if(regService==null){ Registration.Builder=新建Registration.Builder( AndroidHttp.newCompatibleTransport(), 新的AndroidJsonFactory(),null) //仅在本地测试时需要setRootUrl和setGoogleClientRequestInitializer, //否则可以跳过它们 .setRootUrl(“http://10.0.2.2:8080/_ah/api/") .setGoogleClientRequestInitializer(新的GoogleClientRequestInitializer(){ @凌驾 公共无效初始化(AbstractGoogleClientRequest AbstractGoogleClientRequest) 抛出IOException{ abstractGoogleClientRequest.setDisablegzip内容(true); } }); //可选本地运行代码结束 builder.setApplicationName(context.getString(R.string.app_name)); regService=builder.build(); } 字符串msg=“”; 试一试{ 如果(gcm==null){ gcm=GoogleCloudMessaging.getInstance(上下文); } 字符串regId=gcm.register(发送方ID); msg=“设备已注册,注册ID=“+regId; //您应该通过HTTP将注册ID发送到服务器, //因此,它可以使用GCM/HTTP或CCS向您的应用程序发送消息。 //如果您的应用程序 //正在使用帐户。 regService.register(regId.execute(); }捕获(IOEX异常){ 例如printStackTrace(); msg=“错误:”+ex.getMessage(); } 返回味精; } /** *在{@link#doInBackground}之后的UI线程上运行 *指定的结果是{@link#doInBackground}返回的值

*

*如果任务被取消,则不会调用此方法

* *@param msg{@link#doInBackground}计算的操作结果。 * *@see#onPreExecute *@see#doin background *@see#onCancelled(对象) */ @凌驾 受保护的void onPostExecute(字符串msg){ Toast.makeText(context,msg,Toast.LENGTH_LONG).show(); Logger.getLogger(“注册”).log(Level.INFO,msg); } }
这不是在后台执行后台任务的方式。只需调用
doInBackGround()
方法,即可在同一(主)线程中执行此方法,这将导致您的execption

new GcmRegistrationAsyncTask().doInBackground(this);
正确的方法是:

new GcmRegistrationAsyncTask().execute(null,null,null);
以下是来自以下方面的示例:

private void registerInBackground(){
新建异步任务(){
@凌驾
受保护字符串doInBackground(无效…参数){
字符串msg=“”;
试一试{
如果(gcm==null){
gcm=GoogleCloudMessaging.getInstance(上下文);
}
regid=gcm.寄存器(发送方ID);
msg=“设备已注册,注册ID=“+regid;
//您应该通过HTTP将注册ID发送到服务器,以便
//可以使用GCM/HTTP或CCS向您的应用程序发送消息。
sendRegistrationIdToBackend();
//对于本演示:我们不需要发送它,因为设备将发送
//向服务器发送的上游消息,使用
//消息中的“发件人”地址。
//坚持
new GcmRegistrationAsyncTask().execute(null,null,null);
private void registerInBackground() {
    new AsyncTask<Void, Void, String>() {
        @Override
        protected String doInBackground(Void... params) {
            String msg = "";
            try {
                if (gcm == null) {
                    gcm = GoogleCloudMessaging.getInstance(context);
                }
                regid = gcm.register(SENDER_ID);
                msg = "Device registered, registration ID=" + regid;

                // You should send the registration ID to your server over HTTP, so it
                // can use GCM/HTTP or CCS to send messages to your app.
                sendRegistrationIdToBackend();

                // For this demo: we don't need to send it because the device will send
                // upstream messages to a server that echo back the message using the
                // 'from' address in the message.

                // Persist the regID - no need to register again.
                storeRegistrationId(context, regid);
            } catch (IOException ex) {
                msg = "Error :" + ex.getMessage();
                // If there is an error, don't just keep trying to register.
                // Require the user to click a button again, or perform
                // exponential back-off.
            }
            return msg;
        }

        @Override
        protected void onPostExecute(String msg) {
            mDisplay.append(msg + "\n");
        }
    }.execute(null, null, null);
}