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 最近同事说需要修改右边导航栏到底部，问怎么搞？然后看下源码尝试下。

 1、Android 12修改代码路径 frameworks/base/services/core/java/com/android/server/wm/DisplayPolicy.java

a/frameworks/base/services/core/java/com/android/server/wm/DisplayPolicy.java b/frameworks/base/services/core/java/com/android/server/wm/DisplayPolicy.java
old mode 100644 (file)
new mode 100755 (executable)
index b4227f8..a11be51
--- a/frameworks/base/services/core/java/com/android/server/wm/DisplayPolicy.java
+++ b/frameworks/base/services/core/java/com/android/server/wm/DisplayPolicy.java
@@ -3270,13 +3270,13 @@ public class DisplayPolicy extends AbsDisplayPolicy{@NavigationBarPositionint navigationBarPosition(int displayWidth, int displayHeight, int displayRotation) {
-        if (navigationBarCanMove() && displayWidth > displayHeight) {
+        /*if (navigationBarCanMove() && displayWidth > displayHeight) {if (displayRotation == Surface.ROTATION_270) {Log.e("DisplayPolicy","ZM NAV_BAR_LEFT displayRotation ="+displayRotation);return NAV_BAR_LEFT;} else if (displayRotation == Surface.ROTATION_90) {return NAV_BAR_RIGHT;Log.e("DisplayPolicy","ZM NAV_BAR_RIGHT displayRotation ="+displayRotation);}
-        }
+        }*/return NAV_BAR_BOTTOM;}

2、修改之后效果显示如图所示 ，基本跟屏幕密度比density 有关。

 这里简单记录下，转载请注明出处高通Android 12 右边导航栏改成底部显示-CSDN博客，谢谢！