在没有用的Manifest.xml发现.Launcher启动活动已列入？ [英] No Launcher Activity found with .Launcher in Manifest.xml already included?

问题描述

我试图运行源$ C ​​$ C，我在网上找到的机器人。当我运行它，它给了我：

I am trying to run a source code I've found online for android. When I run it, it gives me:

没有启动的活动找到了！结果
  这次发射将只同步应用程序包设备上！结果
  执行同步

No Launcher activity found!
The launch will only sync the application package on the device!
Performing sync

我已经在我的Manifest.xml以下内容：

I already have in my Manifest.xml the following:

action android:name="android.intent.action.MAIN" 
category android:name="android.intent.category.LAUNCHER" 

可能是什么问题？奇怪的是，它的工作一次。然后，当我再次遇到它，它给了我需要强制应用程序。

What could be wrong? The weird thing is that it worked once. And then when I ran it again it gave me needs to force the application.

这不是一个重复的问题，因为我读过，每个人都在暗示放置那些在manifest.xml。

It is not a duplicate question because I've read that everyone is suggesting to place those in the Manifest.xml.

推荐答案

我认为你需要定义一个启动活动。例如，在我的应用程序

I think you need to define a launching activity. For example in my app

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

我已经定义了活动开始应用的开始。

I have defined which activity is started on app start.

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