Android13.0 强制APP横屏显示的实现

原创 2023-12-19 19:51:08 2.3k 阅读 AI写同款

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AI摘要

在项目中遇到需要APP始终横屏显示的需求，本文详细介绍了通过修改frameworks中的PackageParser.java, ParsedActivityUtils.java和ActivityClientController.java三个关键文件来实现强制横屏的解决方案。 134520979,17243493,深度学习实战：GANs详解与Python实现,['人工智能', '深度学习', 'GANs', 'Python', '模型训练']

项目要求实现APP横屏显示，在网上找了很多方法都不管用，因此直接从packageParser.java入手解决：

一、打开frameworks/base/core/java/android/content/pm/PackageParser.java


-            a.info.screenOrientation = sa.getInt(
-                    R.styleable.AndroidManifestActivity_screenOrientation,
-                    SCREEN_ORIENTATION_UNSPECIFIED);
              //add by
+            if(SystemProperties.getInt("persist.sys.force_land_enabled", 1) == 1){
+                a.info.screenOrientation = SCREEN_ORIENTATION_LANDSCAPE;
+            }else{
+                a.info.screenOrientation = sa.getInt(
+                        R.styleable.AndroidManifestActivity_screenOrientation,
+                        SCREEN_ORIENTATION_UNSPECIFIED);
+            }
+            //end
 
             setActivityResizeMode(a.info, sa, owner);

二、打开/frameworks/base/core/java/android/content/pm/parsing/component/ParsedActivityUtils.java

-                int screenOrientation = sa.getInt(R.styleable.AndroidManifestActivity_screenOrientation, SCREEN_ORIENTATION_UNSPECIFIED);
+                //add by
+                int screenOrientation;
+
+                Log.d(TAG, "persist.sys.force_land_enabled = " + SystemProperties.getInt("persist.sys.force_land_enabled", 1));
+
+                if(SystemProperties.getInt("persist.sys.force_land_enabled", 1) == 1){
+                    screenOrientation = SCREEN_ORIENTATION_LANDSCAPE;
+                }else {
+                    screenOrientation = sa.getInt(R.styleable.AndroidManifestActivity_screenOrientation, SCREEN_ORIENTATION_UNSPECIFIED);
+                }
+                //end
+

三、打开/frameworks/base/services/core/java/com/android/server/wm/ActivityClientController.java

@@ -636,7 +637,12 @@ class ActivityClientController extends IActivityClientController.Stub {
             synchronized (mGlobalLock) {
                 final ActivityRecord r = ActivityRecord.isInRootTaskLocked(token);
                 if (r != null) {
-                    r.setRequestedOrientation(requestedOrientation);
+                    // add by
+                    if(SystemProperties.getInt("persist.sys.force_land_enabled", 1) == 1) {
+                        r.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
+                    }else{
+                        r.setRequestedOrientation(requestedOrientation);
+                    }
                 }
             }
         } finally {

至此，完美解决横屏问题！

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#android