当应用程序关闭时，Android 不会收到来自 Parse Push 的推送通知

Question

当我在我的 Android 手机上测试 Parse Push 时，只要应用程序运行，推送通知就会通过。如果应用程序关闭:我只收到一条消息说 <App name> has stopped. - 我没有收到任何推送 - 但仍然收到停止通知弹出窗口。我已逐步遵循 Parse 的快速入门指南。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.ostsia.ostsia">
    <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" />

    <!--
      IMPORTANT: Change "com.parse.starter.permission.C2D_MESSAGE" in the lines below
      to match your app's package name + ".permission.C2D_MESSAGE".
    -->
    <permission android:protectionLevel="signature"
        android:name="org.ostsia.ostsia.permission.C2D_MESSAGE" />
    <uses-permission android:name="org.ostsia.ostsia.permission.C2D_MESSAGE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ostsia"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="org.ostsia.ostsia.MainActivity"
            android:label="@string/app_name" >
            <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.ParsePushBroadcastReceiver"
            android:exported="false">

            <intent-filter>
                <action android:name="com.parse.push.intent.RECEIVE" />
                <action android:name="com.parse.push.intent.DELETE" />
                <action android:name="com.parse.push.intent.OPEN" />
            </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" />

                <!--
                  IMPORTANT: Change "com.parse.starter" to match your app's package name.
                -->
                <category android:name="org.ostsia.ostsia" />
            </intent-filter>
        </receiver>
    </application>
</manifest>

03-03 21:27:10.829  31149-31149/org.ostsia.ostsia E/com.parse.PushService﹕ 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.
03-03 21:27:10.829  31149-31149/org.ostsia.ostsia D/AndroidRuntime﹕ Shutting down VM
03-03 21:27:10.839  31149-31149/org.ostsia.ostsia E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: org.ostsia.ostsia, PID: 31149
    java.lang.RuntimeException: Unable to start service com.parse.PushService@4d17bf6 with Intent { act=com.google.android.c2dm.intent.RECEIVE flg=0x10 pkg=org.ostsia.ostsia cmp=org.ostsia.ostsia/com.parse.PushService (has extras) }: java.lang.RuntimeException: applicationContext is null. You must call Parse.initialize(context, applicationId, clientKey) before using the Parse library.
            at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3278)
            at android.app.ActivityThread.access$2200(ActivityThread.java:172)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1520)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:145)
            at android.app.ActivityThread.main(ActivityThread.java:5834)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1388)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1183)
     Caused by: java.lang.RuntimeException: applicationContext is null. You must call Parse.initialize(context, applicationId, clientKey) before using the Parse library.
            at com.parse.Parse.checkContext(Parse.java:451)
            at com.parse.Parse.getApplicationContext(Parse.java:219)
            at com.parse.ManifestInfo.getContext(ManifestInfo.java:322)
            at com.parse.ManifestInfo.getPackageName(ManifestInfo.java:326)
            at com.parse.ManifestInfo.getIntentReceivers(ManifestInfo.java:131)
            at com.parse.ManifestInfo.hasIntentReceiver(ManifestInfo.java:123)
            at com.parse.ManifestInfo.getPushUsesBroadcastReceivers(ManifestInfo.java:174)
            at com.parse.PushService.wipeRoutingAndUpgradePushStateIfNeeded(PushService.java:454)
            at com.parse.PushService.onStartCommand(PushService.java:435)
            at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3261)
            at android.app.ActivityThread.access$2200(ActivityThread.java:172)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1520)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:145)
            at android.app.ActivityThread.main(ActivityThread.java:5834)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1388)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1183)
03-03 21:27:12.599  31149-31149/org.ostsia.ostsia I/Process﹕ Sending signal. PID: 31149 SIG: 9

Answer 1

在类似于下面的 Application 类中初始化解析

public class AppClass extends Application {
    @Override
    public void onCreate() {
        super.onCreate();

        // Parse.enableLocalDatastore(this); // if you need this, put before init
        Parse.initialize(this, "gV6QK", "JJmFo99");
        PushService.setDefaultPushCallback(getApplicationContext(), MainActivity.class);
        ParseInstallation.getCurrentInstallation().saveInBackground();
    }
}

不要忘记在 list 中引用您的应用类

<application android:name=".AppClass">

从 MainActivity 中删除 Parse init