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一、环境

高通865 Android 10

二、具体详情

现象：默认赋予第三方应用的权限，在应用信息中清理用户数据的时候，权限也会被清理掉;

希望：只清理数据，保留权限

相关源码修改如下：

frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java

@@ -4064,6 +4064,8 @@ public class ActivityManagerService extends IActivityManager.Stub@Overridepublic boolean clearApplicationUserData(final String packageName, boolean keepState,final IPackageDataObserver observer, int userId) {
+        //not remove Permission        
+        keepState=true;enforceNotIsolatedCaller("clearApplicationUserData");int uid = Binder.getCallingUid();int pid = Binder.getCallingPid();
@@ -4748,7 +4750,7 @@ public class ActivityManagerService extends IActivityManager.Stub}// Remove transient permissions granted from/to this package/user
-        mUgmInternal.removeUriPermissionsForPackage(packageName, userId, false, false);
+       // mUgmInternal.removeUriPermissionsForPackage(packageName, userId, false, false);if (doit) {for (i = mBroadcastQueues.length - 1; i >= 0; i--) {

 frameworks/base/services/core/java/com/android/server/pm/PackageManagerService.java

                         InstallArgs args = data.args;PackageInstalledInfo parentRes = data.res;-                        final boolean grantPermissions = (args.installFlags
-                                & PackageManager.INSTALL_GRANT_RUNTIME_PERMISSIONS) != 0;
+                        // final boolean grantPermissions = (args.installFlags
+                        //         & PackageManager.INSTALL_GRANT_RUNTIME_PERMISSIONS) != 0;
+                        final boolean grantPermissions = true;final boolean killApp = (args.installFlags& PackageManager.INSTALL_DONT_KILL_APP) == 0;final boolean virtualPreload = ((args.installFlags
@@ -19953,7 +19954,7 @@ public class PackageManagerService extends IPackageManager.Stub}PackageSetting ps = (PackageSetting) pkg.mExtras;
-            resetUserChangesToRuntimePermissionsAndFlagsLPw(ps, userId);
+            //resetUserChangesToRuntimePermissionsAndFlagsLPw(ps, userId);}clearAppDataLIF(pkg, userId,

安装应用时，默认给权限，请查阅另外一篇博客：

Android-Framework 默认给安装的应用赋权限-CSDN博客