真机调试没法安装 The application does not have a valid signature.

        xcode 8.0, 项目编译成功后，真机联调，提示“The application does not have a valid signature.”，包没法安装到设备上，以下图               解决方法是 clearn当前工程，保险起见能够删除DerivedData路径下全部的文件，真实路径是 /Users/XXXXX/Library/Developer/Xcode

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