onUpgrade方法是在安装的新应用程序上调用,当我从Android Studio向手机运行代码时,其工作正常(调用了“ onCreate”方法,并成功创建了数据库),但是当我创建签名APK(发布应用程序)时,我在Phone上运行该应用程序,其调用onUpgrade方法并崩溃(调用了编写的Alter Table SQL查询),任何帮助将不胜感激。
Try disable backup by adding following to your AndroidManifest.xml
:
<application
android:name=".Application"
android:allowBackup="false"
...
/>
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