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在一些场景下，需要给app 添加运行时权限，这样就不需要在使用的时候再去点击授权。
直接上代码：

--- a/services/core/java/com/android/server/pm/permission/DefaultPermissionGrantPolicy.java
+++ b/services/core/java/com/android/server/pm/permission/DefaultPermissionGrantPolicy.java
@@ -925,6 +925,45 @@ final class DefaultPermissionGrantPolicy {String commonServiceAction = "android.adservices.AD_SERVICES_COMMON_SERVICE";grantPermissionsToSystemPackage(pm, getDefaultSystemHandlerServicePackage(pm,commonServiceAction, userId), userId, NOTIFICATION_PERMISSIONS);
+         // For custom pkg
+        grantPermissionsToCustomApp(pm, PCK_NAME_QMMI, userId);
+        grantPermissionsToCustomApp(pm, PCK_NAME_SNAPDRAGON_CAMERA, userId);
+    }
+
+    // custom app add default package
+    private static final String PCK_NAME_QMMI = "com.qualcomm.qti.qmmi";
+    //骁龙照相机（厂测应用会调用起骁龙相机进行拍照测试）
+    private static final String PCK_NAME_SNAPDRAGON_CAMERA = "org.codeaurora.snapcam";
+
+
+  /**
+    *  给定制的应用授予一些权限
+    */
+    private void grantPermissionsToCustomApp(PackageManagerWrapper pm , String packageName , int userId ){
+        Log.i("Custom", "Granting permissions to " + packageName + " for user " + userId );
+        try{
+            PackageInfo customPackage = pm.getPackageInfo(packageName);
+
+            if ((customPackage != null) && doesPackageSupportRuntimePermissions(customPackage)) {
+
+                Set<String> permissions = new ArraySet<>();
+                for (String permission : customPackage.requestedPermissions) {
+                    final PermissionInfo perm = pm.getPermissionInfo(permission);
+                    if (perm == null) {
+                        continue;
+                    }
+                    if (perm.isRuntime()) {
+                        Log.i("Custom", packageName + " need Runtime permission : " + permission );
+                        permissions.add(permission);
+                    }
+                }
+                if (!permissions.isEmpty()) {
+                    grantRuntimePermissions(pm,customPackage, permissions, false, userId);
+                }
+            }
+        }catch(Exception e) {
+            e.printStackTrace();
+        }}

grantPermissionsToCustomApp 方法添加在grantDefaultSystemHandlerPermissions方法末尾就OK了
这个改动单编没生效,需整编验证。