Android 8.1 默认赋予应用权限

最近接到项目需求，需要默认授予预置APP的应用权限以便操作使用，具体修改参照如下：

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

    private void grantDefaultSystemHandlerPermissions(int userId) {Log.i(TAG, "Granting permissions to default platform handlers for user " + userId);final PackagesProvider locationPackagesProvider;final PackagesProvider voiceInteractionPackagesProvider;final PackagesProvider smsAppPackagesProvider;final PackagesProvider dialerAppPackagesProvider;final PackagesProvider simCallManagerPackagesProvider;final SyncAdapterPackagesProvider syncAdapterPackagesProvider;synchronized (mService.mPackages) {locationPackagesProvider = mLocationPackagesProvider;voiceInteractionPackagesProvider = mVoiceInteractionPackagesProvider;smsAppPackagesProvider = mSmsAppPackagesProvider;dialerAppPackagesProvider = mDialerAppPackagesProvider;simCallManagerPackagesProvider = mSimCallManagerPackagesProvider;syncAdapterPackagesProvider = mSyncAdapterPackagesProvider;}String[] voiceInteractPackageNames = (voiceInteractionPackagesProvider != null)? voiceInteractionPackagesProvider.getPackages(userId) : null;String[] locationPackageNames = (locationPackagesProvider != null)? locationPackagesProvider.getPackages(userId) : null;String[] smsAppPackageNames = (smsAppPackagesProvider != null)? smsAppPackagesProvider.getPackages(userId) : null;String[] dialerAppPackageNames = (dialerAppPackagesProvider != null)? dialerAppPackagesProvider.getPackages(userId) : null;String[] simCallManagerPackageNames = (simCallManagerPackagesProvider != null)? simCallManagerPackagesProvider.getPackages(userId) : null;String[] contactsSyncAdapterPackages = (syncAdapterPackagesProvider != null) ?syncAdapterPackagesProvider.getPackages(ContactsContract.AUTHORITY, userId) : null;String[] calendarSyncAdapterPackages = (syncAdapterPackagesProvider != null) ?syncAdapterPackagesProvider.getPackages(CalendarContract.AUTHORITY, userId) : null;synchronized (mService.mPackages) {+            PackageParser.Package uPackage = getSystemPackageLPr("uPackageName");
+            if (uPackage != null&& doesPackageSupportRuntimePermissions(uPackage)) {
+                grantRuntimePermissionsLPw(uPackage, PHONE_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, SMS_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, LOCATION_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, CAMERA_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, STORAGE_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, MICROPHONE_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, SENSORS_PERMISSIONS, userId);
+                grantRuntimePermissionsLPw(uPackage, CONTACTS_PERMISSIONS, userId);
+            }

重新编译验证，修改生效，已默认赋予应用权限