之前装过的应用装不上

Existing package: PackageSetting{56cd3bd com.juphoon.service/10111}

02-22 18:55:15.077 769 821 W PackageManager: Package com.juphoon.service signatures do not match the previously installed version; ignoring!

删除system／app和data／app下，还无效后

删除 /data/system/packages.xml 文件中 你的App对应的项

ervice: Releasing suspend blocker "PowerManagerService.WakeLocks".

02-22 21:09:24.025 768 815 D PackageManager: Renaming /data/app/vmdl1747330910.tmp to /data/app/com.android.messaging-1

02-22 21:09:24.031 768 815 D PackageManager: installNewPackageLI: Package{bbffa9e com.android.messaging}

02-22 21:09:24.047 267 267 E : Couldn't opendir /data/data/com.android.messaging: No such file or directory

02-22 21:09:24.047 267 267 E : Couldn't opendir /data/user_de/0/com.android.messaging: No such file or directory

02-22 21:09:24.048 768 815 W PackageManager: com.android.internal.os.InstallerConnection$InstallerException: Failed to execute destroy_app_data [null, com.android.messaging, 0, 3, 0]: -2

02-22 21:09:24.051 768 815 W PackageManager: Package couldn't be installed in /data/app/com.android.messaging-1

02-22 21:09:24.051 768 815 W PackageManager: com.android.server.pm.PackageManagerException: Package com.android.messaging has no signatures that match those in shared user com.android.messaging.plugins; ignoring!

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.verifySignaturesLP(PackageManagerService.java:7235)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.scanPackageDirtyLI(PackageManagerService.java:8376)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.scanPackageLI(PackageManagerService.java:7994)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.scanPackageTracedLI(PackageManagerService.java:7971)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.installNewPackageLIF(PackageManagerService.java:14210)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.installPackageLI(PackageManagerService.java:15280)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.installPackageTracedLI(PackageManagerService.java:14930)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService.-wrap25(PackageManagerService.java)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.pm.PackageManagerService$9.run(PackageManagerService.java:12384)

02-22 21:09:24.051 768 815 W PackageManager: at android.os.Handler.handleCallback(Handler.java:751)

02-22 21:09:24.051 768 815 W PackageManager: at android.os.Handler.dispatchMessage(Handler.java:95)

02-22 21:09:24.051 768 815 W PackageManager: at android.os.Looper.loop(Looper.java:154)

02-22 21:09:24.051 768 815 W PackageManager: at android.os.HandlerThread.run(HandlerThread.java:61)

02-22 21:09:24.051 768 815 W PackageManager: at com.android.server.ServiceThread.run(ServiceThread.java:46)

02-22 21:09:24.106 768 815 V PackageManager: + starting restore round-trip 2

02-22 21:09:24.107 768 815 V PackageManager: No restore - queue post-install for 2

02-22 21:09:24.107 768 815 V PackageManager: Handling post-install for 2

02-22 21:09:24.108 267 267 E : Couldn't opendir /data/app/vmdl1747330910.tmp: No such file or directory

02-22 21:09:24.109 768 815 D PackageManager: pms install end