一、环境

高通865 Android 10

二、代码修改

device/qcom/qssi/system.prop

+# Disable recent key
+persist.recentkey.disable=11-屏蔽多任务按键
0-打开多任务按键

frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java

@@ -2770,7 +2770,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {}return 0;} else if (keyCode == KeyEvent.KEYCODE_APP_SWITCH) {
-            if (!keyguardOn) {
+			String recentKeyEnable = SystemProperties.get("persist.recentkey.disable");
+            if (!keyguardOn && "0".equals(recentKeyEnable)) {if (down && repeatCount == 0) {preloadRecentApps();} else if (!down) {