创建了两个发射器图标的示例应用程序。例如，两个 组件，如：

Create a sample application with two launcher icons. For example, two components such as:

<application ...> 
  <activity ... android:name="TestActivity01"> 
    <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
    </intent-filter> 
  </activity> 
  <activity ... android:name="TestActivity02"> 
    <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
    </intent-filter> 
  </activity> 
</application> 

无论是通过从市场下载安装应用程序，或通过 AppInstaller。当消息对话框询问你，如果你想运行 应用程序，将抛出一个异常：

Either install the application via downloading from the Marketplace, or via AppInstaller. When the message box asks you if you would like to run the application, an exception is thrown:

02-03 16:42:44.270: ERROR/AndroidRuntime(395): 
android.content.ActivityNotFoundException: Unable to find explicit activity 
class {com.xxx.xxx/com.android.internal.app.ResolverActivity}; have you 
declared this activity in your AndroidManifest.xml?
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1
480)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.app.Instrumentation.execStartActivity(Instrumentation.java:1454)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.app.Activity.startActivityForResult(Activity.java:2660)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.app.Activity.startActivity(Activity.java:2704)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
com.android.packageinstaller.InstallAppDone.onClick(InstallAppDone.java:105
)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.View.performClick(View.java:2344)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.View.onTouchEvent(View.java:4133)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.widget.TextView.onTouchEvent(TextView.java:6504)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.View.dispatchTouchEvent(View.java:3672)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEv
ent(PhoneWindow.java:1712)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneW
indow.java:1202)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.app.Activity.dispatchTouchEvent(Activity.java:1987)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(P
honeWindow.java:1696)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.view.ViewRoot.handleMessage(ViewRoot.java:1658)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.os.Handler.dispatchMessage(Handler.java:99)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.os.Looper.loop(Looper.java:123)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
android.app.ActivityThread.main(ActivityThread.java:4203)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
java.lang.reflect.Method.invokeNative(Native Method)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
java.lang.reflect.Method.invoke(Method.java:521)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:
791)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
02-03 16:42:44.270: ERROR/AndroidRuntime(395):     at 
dalvik.system.NativeStart.main(Native Method)

这次事故是因为 com.android.internal.app.ResolverActivity 是 试图找到一个（单）组件，它解决了以下意图：

The crash happens because com.android.internal.app.ResolverActivity is trying to find a (single) component which resolves the following intent:

  <action android:name="android.intent.action.MAIN" /> 
  <category android:name="android.intent.category.LAUNCHER" /> 

请注意，这已被测试的两种与AppInstaller，和 一个真正的设备上的实际市场。

Please note that this has been tested BOTH with the AppInstaller, and the actual Marketplace on a real device.

推荐答案

从迈克的解决方法解决方案，为我工作：

The workaround solution from Mike worked for me:

请注意，该活动别名标签必须声明的在的活动标签，你指的是（N的XML）。

Note that the activity-alias tag must be declared after the activity tag you are referring to (n the xml).

看 HTTP：//$c$c.google .COM / P /安卓/问题/详细信息？ID = 6579

注释2由Moussa.Mike，2010年3月30日

Comment 2 by Moussa.Mike, Mar 30, 2010

对于一个适当的解决办法将本次活动别名到你的清单：

For a proper workaround add this activity-alias to your manifest:

<activity-alias android:name="com.android.internal.app.ResolverActivity"
                android:targetActivity=".Main" android:exported="true">

替换。主要您.ClassName要启动为默认时， 打开按钮被击中在此一例

Replace .Main with your .ClassName that you want to launch as the default when the Open button is hit in this one case