禁用旧版本SDK弹框

如果在Android10系统上安装旧版本的app，会提示以下信息。

此应用专为旧版 Android 打造，因此可能无法正常运行。请尝试检查更新或与开发者联系。

为了去掉这个弹框提示，需要添加以下修改, 将 onStartActivity 函数中的 showDeprecatedTargetDialogIfNeeded 禁用。

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--- a/services/core/java/com/android/server/wm/AppWarnings.java
+++ b/services/core/java/com/android/server/wm/AppWarnings.java
@@ -166,7 +166,8 @@ class AppWarnings {
     public void onStartActivity(ActivityRecord r) {
         showUnsupportedCompileSdkDialogIfNeeded(r);
         showUnsupportedDisplaySizeDialogIfNeeded(r);
-        showDeprecatedTargetDialogIfNeeded(r);
+        //showDeprecatedTargetDialogIfNeeded(r);
     }

     /**

安装app默认提供权限

对于安装app是自动提供的权限，可以添加以下修改。 在 PackageManagerService.java 文件中添加白名单.

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--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -1872,7 +1872,8 @@ public class PackageManagerService extends IPackageManager.Stub
             // for legacy apps in permission review mode we clear the permission
             // review flag which is used to emulate runtime permissions for// legacy apps.
-            if (grantPermissions) {
+            if (grantPermissions || res.name.contains("com.customPackage") || res.name.contains("com.baidu.input")) {
                 final int callingUid = Binder.getCallingUid();
                 mPermissionManager.grantRequestedRuntimePermissions(
                        res.pkg, res.newUsers, grantedPermissions, callingUid,

运行时权限

对于运行时的权限，在Android10里目前只找到对指定app进行权限配置的方法。以百度输入法为例，添加权限如下。

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--- a/services/core/java/com/android/server/pm/permission/DefaultPermissionGrantPolicy.java
+++ b/services/core/java/com/android/server/pm/permission/DefaultPermissionGrantPolicy.java
@@ -744,6 +744,16 @@ public final class DefaultPermissionGrantPolicy {
             grantPermissionsToSystemPackage(systemCaptionsServicePackageName, userId,
MICROPHONE_PERMISSIONS);
         }
+
+        PackageInfo mBaiduPackageInfo = getPackageInfo("com.baidu.input");
+        if (mBaiduPackageInfo != null && doesPackageSupportRuntimePermissions(mBaiduPackageInfo)) {
+            grantPermissionsToPackage(mBaiduPackageInfo, userId, false, true, true, STORAGE_PERMISSIONS);
+            grantPermissionsToPackage(mBaiduPackageInfo, userId, false, true, true, ALWAYS_LOCATION_PERMISSIONS);
+            grantPermissionsToPackage(mBaiduPackageInfo, userId, false, true, true, PHONE_PERMISSIONS);
+            grantPermissionsToPackage(mBaiduPackageInfo, userId, false, true, true, CONTACTS_PERMISSIONS);
+        }
     }

     private String getDefaultSystemHandlerActivityPackageForCategory(String category, int userId) {

参考