安卓：更新后重新启动应用程序 - ACTION_PACKAGE_REPLACED [英] Android : restart application after update - ACTION_PACKAGE_REPLACED

问题描述

我的应用程序，是不是在播放存储在网络上验证是否有一个新的版本，下载并启动它。安装完毕后，我想重新启动应用程序，我会使用 BroadcastRecevier 与 ACTION_PACKAGE_REPLACED 。这是code：

My application that is not on Play Store verify on the web If there are a new version and download and start it. After the installation I would like to restart the application and I would use a BroadcastRecevier with ACTION_PACKAGE_REPLACED. This is the code :

广播：

public void onReceive(Context context, Intent intent) {
  if(intent.getAction().equals(Intent.ACTION_PACKAGE_REPLACED)){
    ApplicationInfo app = new ApplicationInfo();
    if(app.packageName.equals("it.android.downloadapk")){
      Intent LaunchIntent = context.getPackageManager().getLaunchIntentForPackage(app.packageName);
      context.startActivity(LaunchIntent);                    
    }
  }
}

清单：

<receiver android:name="it.android.downloadapk.Broadcast">
  <intent-filter>
    <action android:name="android.intent.action.ACTION_PACKAGE_REPLACED"></action>
    <data android:scheme="package" android:path="it.android.downloadapk" /> 
  </intent-filter>
</receiver>

现在的问题是，当我安装新的APK，广播似乎不启动，为什么？

The problem is that when I install new apk, the Broadcast appears not to start, why ?

推荐答案

看到这样的：

<一个href="http://stackoverflow.com/questions/2133986/how-to-know-my-android-application-has-been-upgraded-in-order-to-reset-an-alarm">How要知道我的Andr​​oid应用程序已经升级，以重置报警？

正确的解决办法是，你使用了错误的字符串中的清单： 的http://developer.android.com/reference/android/content/Intent.html#ACTION_PACKAGE_REPLACED

correct fix is that you use the wrong string in the manifest: http://developer.android.com/reference/android/content/Intent.html#ACTION_PACKAGE_REPLACED

应该是android.intent.action.PACKAGE_REPLACED代替。

it should be "android.intent.action.PACKAGE_REPLACED" instead.

好了，我看到了什么我已经写尚不足以尝试一下，所以我会破例发布整个项目只是为了显示它的工作原理： 应用程序code是在一个名为com.broadcast_receiver_test包。 不要忘了测试前运行它，否则它不会在一些Android的版本工作（我认为API 11+）。

ok , i see that what i've written is still not enough to try it out, so i will make an exception and publish a whole project just to show that it works: app code is in a package called "com.broadcast_receiver_test" . don't forget to run it before testing , or else it won't work on some android versions (i think API 11+) .

清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.broadcast_receiver_test" android:versionCode="1"
  android:versionName="1.0">
  <uses-sdk android:minSdkVersion="3" />

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

    <activity android:name=".BroadcastReceiverTestActivity"
      android:label="@string/app_name">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>

    <receiver android:name=".MyBroadcastReceiver">
      <intent-filter>
        <action android:name="android.intent.action.PACKAGE_REPLACED"/>
        <data android:scheme="package"  />
      </intent-filter>

      <intent-filter>
        <action android:name="android.intent.action.PACKAGE_REMOVED"/>
        <data android:scheme="package"  />
      </intent-filter>

      <intent-filter>
        <action android:name="android.intent.action.PACKAGE_ADDED"/>
        <data android:scheme="package"  />
      </intent-filter>
    </receiver>

  </application>
</manifest>

MyBroadcastReceiver.java：

MyBroadcastReceiver.java:

public class MyBroadcastReceiver extends BroadcastReceiver
  {
  @Override
  public void onReceive(final Context context,final Intent intent)
    {
    final String msg="intent:"+intent+" action:"+intent.getAction();
    Log.d("DEBUG",msg);
    Toast.makeText(context,msg,Toast.LENGTH_SHORT).show();
    }
  }

请只要运行它，看到它完美的作品。

please just run it and see that it works perfectly .

编辑：如果你的程序是为API12及以上，且只希望处理您的应用程序的更新的情况下，可以单独使用此意图：

if your app is for API12 and above, and only wish to handle the case of updating of your app, you can use this intent alone:

的http://developer.android.com/reference/android/content/Intent.html#ACTION_MY_PACKAGE_REPLACED

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