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Android Studio“运行“ app”时出错:未找到默认活动

[英]Android studio 'Error running 'app': Default Activity not found

I don't understand why the error not disappeared 我不明白为什么错误没有消失

I was thinking it is error from Manifest.xml because it show after i adjust manifest file 我想这是Manifest.xml错误,因为它在我调整清单文件后显示
but i can't find what was my mistake can you teach me? 但我找不到我的错误,你可以教我吗?

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