收到parse.com推送通知后，Apache Cordova应用程序崩溃了。

Question

我希望将parse.com的推送通知服务添加到我的Cordova应用程序中。我已经阅读了parse.com的快速入门指南，并将SDK文件放置在libs文件夹中。此后，我已经将代码添加到主java文件和AndroidManifest.xml中。应用程序可以正确运行。parse.com可以接收我的设备令牌，我也可以向设备发送推送通知，但是在两三个推送通知之后，应用程序会崩溃。

catlog中的错误消息如下：

05-07 02:08:25.185: E/com.parse.PushService(28735): The Parse push service cannot start because Parse.initialize has not yet been called. If you call Parse.initialize from an Activity's onCreate, that call should instead be in the Application.onCreate. Be sure your Application class is registered in your AndroidManifest.xml with the android:name property of your <application> tag.
05-07 02:08:25.185: D/AndroidRuntime(28735): Shutting down VM
05-07 02:08:25.185: W/dalvikvm(28735): threadid=1: thread exiting with uncaught exception (group=0x41b0de48)
05-07 02:08:25.185: E/AndroidRuntime(28735): FATAL EXCEPTION: main
05-07 02:08:25.185: E/AndroidRuntime(28735): Process: ir.wedesign.pushapp, PID: 28735
05-07 02:08:25.185: E/AndroidRuntime(28735): java.lang.RuntimeException: Unable to start service com.parse.PushService@42b596a8 with Intent { act=com.google.android.c2dm.intent.RECEIVE flg=0x10 pkg=ir.wedesign.pushapp cmp=ir.wedesign.pushapp/com.parse.PushService (has extras) }: java.lang.RuntimeException: applicationContext is null. You must call Parse.initialize(context, applicationId, clientKey) before using the Parse library.
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2726)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.app.ActivityThread.access$2100(ActivityThread.java:139)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1297)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.os.Handler.dispatchMessage(Handler.java:102)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.os.Looper.loop(Looper.java:136)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.app.ActivityThread.main(ActivityThread.java:5105)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at java.lang.reflect.Method.invokeNative(Native Method)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at java.lang.reflect.Method.invoke(Method.java:515)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at dalvik.system.NativeStart.main(Native Method)
05-07 02:08:25.185: E/AndroidRuntime(28735): Caused by: java.lang.RuntimeException: applicationContext is null. You must call Parse.initialize(context, applicationId, clientKey) before using the Parse library.
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.Parse.checkContext(Parse.java:557)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.Parse.getApplicationContext(Parse.java:165)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.ManifestInfo.getContext(ManifestInfo.java:221)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.ManifestInfo.getPackageManager(ManifestInfo.java:229)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.ManifestInfo.getPackageInfo(ManifestInfo.java:240)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.ManifestInfo.deviceSupportsGcm(ManifestInfo.java:325)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.ManifestInfo.getPushType(ManifestInfo.java:109)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at com.parse.PushService.onStartCommand(PushService.java:377)
05-07 02:08:25.185: E/AndroidRuntime(28735):    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2709)
05-07 02:08:25.185: E/AndroidRuntime(28735):    ... 10 more

这是我的主要Java文件：

/*
       Licensed to the Apache Software Foundation (ASF) under one
       or more contributor license agreements.  See the NOTICE file
       distributed with this work for additional information
       regarding copyright ownership.  The ASF licenses this file
       to you under the Apache License, Version 2.0 (the
       "License"); you may not use this file except in compliance
       with the License.  You may obtain a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

       Unless required by applicable law or agreed to in writing,
       software distributed under the License is distributed on an
       "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
       KIND, either express or implied.  See the License for the
       specific language governing permissions and limitations
       under the License.
 */

package ir.wedesign.pushapp;

import android.os.Bundle;
import org.apache.cordova.*;
import com.parse.Parse;
import com.parse.ParseAnalytics;
import com.parse.ParseInstallation;
import com.parse.PushService;

public class PushApp extends CordovaActivity 
{
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        super.init();
        // Set by <content src="index.html" /> in config.xml
        super.loadUrl(Config.getStartUrl());
        //super.loadUrl("file:///android_asset/www/index.html");
        Parse.initialize(this, "xJK9ZA0Dtsjd8RwoNUUsIHPXzMRbmcxXGWqiw", "19g9eUKjLjlUdogHEXStUABNcvy2rA6azb5mXy");
        PushService.setDefaultPushCallback(this, PushApp.class);
        ParseInstallation.getCurrentInstallation().saveInBackground();

    }
}

我的 manifest.xml 文件如下：

<?xml version='1.0' encoding='utf-8'?>
<manifest android:hardwareAccelerated="true" android:versionCode="1" android:versionName="0.0.1" android:windowSoftInputMode="adjustPan" package="ir.wedesign.pushapp" xmlns:android="http://schemas.android.com/apk/res/android">
    <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:resizeable="true" android:smallScreens="true" android:xlargeScreens="true" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <permission android:protectionLevel="signature"
        android:name="ir.wedesign.pushapp.permission.C2D_MESSAGE" />
    <uses-permission android:name="ir.wedesign.pushapp.permission.C2D_MESSAGE" />

    <application android:hardwareAccelerated="true" android:icon="@drawable/icon" android:label="@string/app_name">   
        <activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/app_name" android:name="PushApp" android:theme="@android:style/Theme.Black.NoTitleBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name="com.parse.PushService" />
<receiver android:name="com.parse.ParseBroadcastReceiver">
  <intent-filter>
    <action android:name="android.intent.action.BOOT_COMPLETED" />
    <action android:name="android.intent.action.USER_PRESENT" />
  </intent-filter>
</receiver>
<receiver android:name="com.parse.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="ir.wedesign.pushapp" />
  </intent-filter>
</receiver>
    </application>
    <uses-sdk android:minSdkVersion="10" android:targetSdkVersion="19" />
</manifest>

我搜索了一下，发现很多开发者遇到了同样的问题。我在parse.com的帮助论坛上找到了两个主题： https://www.parse.com/questions/app-crashes-after-after-screen-unlock https://www.parse.com/questions/cannot-send-push-to-android-after-app-is-closed-until-screen-unlock 还有这个： Android App crashes when push is received and app is closed 但对于不懂java语言的人来说，解决方案并不清晰。我该如何更改AndroidManifest.xml和主要的java文件使其正常工作呢？

提前感谢您的帮助。

- Amir-abbas

Answer 1

Parse推送服务无法启动，因为尚未调用Parse.initialize。如果您从Activity的onCreate中调用Parse.initialize，则应将该调用移至Application.onCreate中。请确保您的Application类在AndroidManifest.xml中注册，并在您的标签的android:name属性中进行设置。

尝试区分Activity和Application，创建一个新的类文件，例如MainApplication。

PushApp.java：

public class PushApp extends CordovaActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.init();
        // Set by <content src="index.html" /> in config.xml
        super.loadUrl(Config.getStartUrl());
        //super.loadUrl("file:///android_asset/www/index.html");
    }
}

MainApplication.java:

public class MainApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        Parse.initialize(this, "xJK9ZA0Dtsjd8RwoNUUsIHPXzMRbmcxXGWqiw", "19g9eUKjLjlUdogHEXStUABNcvy2rA6azb5mXy");
        PushService.setDefaultPushCallback(this, PushApp.class);
        ParseInstallation.getCurrentInstallation().saveInBackground();
    }
}

并更改为：

<activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/app_name" android:name="PushApp" android:theme="@android:style/Theme.Black.NoTitleBar">

to:

<activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/app_name" android:name="MainApplication" android:theme="@android:style/Theme.Black.NoTitleBar">

您现在可以在应用关闭/屏幕锁定时收到推送通知。

- chrimutz

Answer 2

如果您将<application>命名为android:name="MainApplication"，请检查您的manifest.xml文件

并将<activity>命名为android:name="PushApp"

- chrimutz