android Settings项目安装 (模拟器版)

参考了网上的一些文章，现总结如下：

1. 运行eclipse的debug，将自己的settings安装到模拟器上会出现如下错误

   [2012-03-08 11:14:27 - Settings] Android Launch!
   [2012-03-08 11:14:27 - Settings] adb is running normally.
   [2012-03-08 11:14:27 - Settings] Performing com.android.settings.Settings activity launch
   [2012-03-08 11:14:27 - Settings] Automatic Target Mode: Preferred AVD 'Demo1' is available on emulator 'emulator-5554'
   [2012-03-08 11:14:27 - Settings] WARNING: Application does not specify an API level requirement!
   [2012-03-08 11:14:27 - Settings] Device API version is 8 (Android 2.2)
   [2012-03-08 11:14:27 - Settings] Uploading Settings.apk onto device 'emulator-5554'
   [2012-03-08 11:15:00 - Settings] Installing Settings.apk...
   [2012-03-08 11:15:31 - Settings] Installation error: INSTALL_FAILED_UPDATE_INCOMPATIBLE
   [2012-03-08 11:15:31 - Settings] Please check logcat output for more details.
   [2012-03-08 11:15:31 - Settings] Launch canceled!

   
   

   就是说你自己写的settings签名和系统自带的settings签名不一致，要先卸载原settings

2. 卸载seetings

• 正常卸载adb uninstall com.android.settings会报Failure

  网上找的方法是 adb shell "cd /system/app;rm Settings.apk;"

  但是会报错rm failed for Settings.apk, Read-only file system

• 得先执行这句（adb 模式下直接就是root权限）adb remount

  提示remount succeeded   （remount的作用大概就是提升读写权限，使之可以操作只读文件）

• 然后就可以执行 adb shell "cd /system/app;rm Settings.apk;"
• 成功删除之后，执行 adb uninstall com.android.settings
• 卸载成功！安装自己的settings
  

参考http://blog.youkuaiyun.com/stonecao/article/details/6460116