Android studio 运行失败：Installation failed since the APK was either not signed, or signed incorrectly.

Android studio 运行失败：Installation failed since the APK was either not signed, or signed incorrectly.

这是由于APK要么不签名，要么签名失败造成的；重新Build就可以了。

安装失败由于APK是要么不签字，或签字不正确。

安装失败由于APK是要么不签字，或签字不正确。

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