Android 8.1 Power电源键增加Home键功能

近来接到客户需求，想要将电源键Power增加Home键功能，即当前页面在非Launcher时按下Power电源键，跳转到Launcher页面，具体修改参照如下：

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

            case KeyEvent.KEYCODE_POWER: {+          else{
+                        if(getCurrentActivityName(mContext).equals("com.android.launcher3.Launcher")) {
+                                if (down) {
+                                    interceptPowerKeyDown(event, interactive);
+                                } else {
+                                    interceptPowerKeyUp(event, interactive, canceled);
+                                }
+                        }else{
+                                if (down) {
+                                    Intent intent=new Intent();
+                                    intent.setClassName("com.android.launcher3","com.android.launcher3.Launcher");
+                                    mContext.startActivity(intent);
+                                }
+                        } 
+                }break;}

重新编译验证，修改生效，电源键Power已增加Home键功能