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新手求助，android studio3.4 编译运行时出错
什么代码也没写就是按书上说的新建一个项目后直接编译运行，但出这个错：
Installation failed with message Failed to commit install session 1223832994 with command pm install-commit 1223832994. Error: INSTALL_FAILED_DEXOPT: Package couldn't be installed in /data/app/com.example.linlonghrma-1: scanPackageLI.
It is possible that this issue is resolved by uninstalling an existing version of the apk if it is present, and then re-installing.
WARNING: Uninstalling will remove the application data!
Do you want to uninstall the existing application?
Installation failed with message Failed to commit install session 1223832994 with command pm install-commit 1223832994. Error: INSTALL_FAILED_DEXOPT: Package couldn't be installed in /data/app/com.example.linlonghrma-1: scanPackageLI.
It is possible that this issue is resolved by uninstalling an existing version of the apk if it is present, and then re-installing.
WARNING: Uninstalling will remove the application data!
Do you want to uninstall the existing application?
...全文
gzwlj2001 2019年06月18日
总算解决了，不是安装问题，解决方法是 先关闭模拟器，
1.File->settings->Bulid.Exec....->Debug->Instant Run->把勾去了
2.Build > Clean Project
3.再运行就Hello World! 了
1.File->settings->Bulid.Exec....->Debug->Instant Run->把勾去了
2.Build > Clean Project
3.再运行就Hello World! 了
江南eileen 2019年06月18日
我用#CSDN#这个app发现了有技术含量的博客，小伙伴们求同去《Android Studio安装遇见的那些bug 新手教程》, 一起来围观吧 https://blog.csdn.net/qq_39131246/article/details/90039418
江南eileen 2019年06月18日
as 安装出错了吧
gzwlj2001 2019年06月18日
停用instant run后，现在又出一个新的错：
Installation failed since the device possibly has stale dexed jars that don't match the current version (dexopt error).
In order to proceed, you have to uninstall the existing application.
WARNING: Uninstalling will remove the application data!
Do you want to uninstall the existing application?
Installation failed since the device possibly has stale dexed jars that don't match the current version (dexopt error).
In order to proceed, you have to uninstall the existing application.
WARNING: Uninstalling will remove the application data!
Do you want to uninstall the existing application?
gzwlj2001 2019年06月18日
我在网上查了下，停用instant run 后又出一个新的错误，真是晕呀