Android 增加虚拟的关机按钮实现虚拟按键关机功能

Posted 2021-03-03 陈富林

• 参考链接：

  https://blog.csdn.net/ansondroider/article/details/97259148

• 准备一个关机的图标，网上去找

  

  • 将这个图标放入 android 源码目录，如下

  frameworks/base/packages/SystemUI/res/drawable-nodpi/ic_sysbar_power.png
  

• 功能实现

  • 在下面的文件里面增加相关的字符：
  • frameworks/base/packages/SystemUI/res/values/strings.xml
    倒数第二行添加：

   <string name="accessibility_power" translatable="false">Power</string>
  

  • 添加按键布局：
  • frameworks/base/packages/SystemUI/res/layout/power.xml

  <com.android.systemui.statusbar.policy.KeyButtonView
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:systemui="http://schemas.android.com/apk/res-auto"
  android:id="@+id/power"
  android:layout_width="@dimen/navigation_key_width"
  android:layout_height="match_parent"
  android:layout_weight="0"
  android:src="@drawable/ic_sysbar_power"
  systemui:keyCode="0"
  android:scaleType="center"
  android:contentDescription="@string/accessibility_power"
  android:paddingStart="@dimen/navigation_key_padding"
  android:paddingEnd="@dimen/navigation_key_padding"
  />
  

  • 在这个文件里面添加如下内容
  • frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarInflaterView.java

  // 添加类的属性
  54     public static final String POWER = "power";
  // 在 inflateButton 方法里面 添加大致在 这个地方的内容
  287         // Add by Frey_chen 20200330
  288         // Add Power layout button ---
  289         }else if (POWER.equals(button)) {
  290             v = inflater.inflate(R.layout.power, parent, false);
  291             if (landscape && isSw600Dp()) {
  292                 setupLandButton(v);
  293             }
  294         // ---
  

  • 修改 Android 默认配置
  • frameworks/base/packages/SystemUI/res/values-sw600dp/config.xml

  <string name="config_navBarLayout" translatable="false">space;volume_sub,back,home,recent,volume_add,screenshot,power;menu_ime</string>
  

  • frameworks/base/packages/SystemUI/res/values-sw900dp/config.xml

  <string name="config_navBarLayout" translatable="false">space;volume_sub,back,home,recent,volume_add,screenshot,power;menu_ime</string>
  

  • frameworks/base/packages/SystemUI/res/values/config.xml

  <string name="config_navBarLayout" translatable="false">space;volume_sub,back,home,recent,volume_add,screenshot,power;menu_ime</string>
  

  • 设置按键可见
  • frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

  1443     private View.OnClickListener mPowerClickListener = new View.OnClickList     ener(){
  1444         public void onClick(View v){
  1445             Intent intent = new Intent("android.intent.action.POWER_MENU");
  1446             mContext.sendBroadcast(intent);
  1447         }
  1448     };
  
  1478         // Add by Frey_chen 20200330
  1479         // Add power button function ---
  1480         ButtonDispatcher powerButton=mNavigationBarView.getPowerButton();
  1481         powerButton.setOnClickListener(mPowerClickListener);
  1482         //powerButton.setOnTouchListener(mPowerTouchListener);
  1483         powerButton.setVisibility(View.VISIBLE);
  1484         // ---
  

  • frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java

  215         mButtonDisatchers.put(R.id.screenshot, new ButtonDispatcher(R.id.scr    eenshot));
  216         mButtonDisatchers.put(R.id.power, new ButtonDispatcher(R.id.power));
  217         mButtonDisatchers.put(R.id.volume_add, new ButtonDispatcher(R.id.vol    ume_add));
  

  • 设置广播监听
  • frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java

  1886         // Add by Frey_chen
  1887         // Add monitor for POWER_MENU
  1888         IntentFilter ifPower = new IntentFilter("android.intent.action.POWE     R_MENU");
  1889         context.registerReceiver(new BroadcastReceiver(){
  1890             @Override
  1891             public void onReceive(Context context, Intent intent) {
  1892                 //show global actions dialog
  1893                 showGlobalActionsInternal();
  1894             }
  1895         }, ifPower);