错误类型3错误：Activity类{}不存在 [英] Error type 3 Error: Activity class {} does not exist

问题描述

我有一个INTELIJ（V12）Android的成功导入到AndroidStudio（V0.4.0）项目。它完美，如果我不改变任何东西的清单。当我想改变发射活动并运行，它与下面的错误输出：

I have an INTELIJ(v12) android project successfully imported to AndroidStudio(v0.4.0). It works perfectly if I don't change anything in manifest. When I want to change the launcher activity and run, it outputs with the following error:

Launching application: com.trackingeng/LandingActivity.
DEVICE SHELL COMMAND: am start -D -n "com.trackingeng/LandingActivity"  
    -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Starting: Intent { act=android.intent.action.MAIN  
    cat=[android.intent.category.LAUNCHER] cmp=com.trackingeng/LandingActivity }
Error type 3
Error: Activity class {com.trackingeng/LandingActivity} does not exist.

当我点击同步工程与摇篮文件它输出：

Project Sync
The project 'TrackingEng' is not a Gradle-based project

任何人都面临着这个问题？任何想法？

Anyone has faced this problem? Any ideas?

运行设置：

Run settings:

推荐答案

我重构后面临着类似的问题。
这是我做过什么来解决这个问题：

I faced a similar problem after refactoring.
This is what i did to resolve this issue:

1. 清理项目
2. 删除了构建目录
3. 的重新开始Android的工作室
4. 重建项目
5. 运行

1. Cleaned the Project
2. Deleted the Build directory
3. Restarted Android Studio
4. Rebuild the Project
5. Run

和一切正常！
我认为关键是要重新启动IDE。

And everything worked fine!
I think the key is to restart your IDE.

希望这有助于你或其他人！

Hope this helps you or anyone else!

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