the apk for your currently selected variant(app-release-unsigned.apk)is not signed.

今天用 android studio3.0 来编译 release 配置的项目时报了以下错误:

the apk for your currently selected variant(app-release-unsigned.apk)is not signed. 
Please specity a signing configuration for this variant(release)

原因

使用 release 配置来编译项目时,没有设置好签名信息

解决方法

1.将 build variant 设置为 release 模式

the apk for your currently selected variant(app-release-unsigned.apk)is not signed._第1张图片

2.打开Android Studio的 Project Structure 面板,右键单击左侧导航栏中的app,打开模块设置

3.选择 Signing 选项卡。添加一个签名配置设置你的key并填写好相应信息

the apk for your currently selected variant(app-release-unsigned.apk)is not signed._第2张图片

4.切换到 Build Types 选项卡,设置签名配置

the apk for your currently selected variant(app-release-unsigned.apk)is not signed._第3张图片

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