android10 隐藏SystemUI锁屏下的多用户图标的示例代码

需求:如上图,需要隐藏右上角的多用户蓝 * 标.
修改后结果如下:

锁屏相关的布局在SystemUI

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

//更新多用户图标的可见性
 private void updateVisibilities() {
   if (mMultiUserSwitch.getParent() != mStatusIconArea && !mKeyguardUserSwitcherShowing) {
     if (mMultiUserSwitch.getParent() != null) {
       getOverlay().remove(mMultiUserSwitch);
     }
     mStatusIconArea.addView(mMultiUserSwitch, 0);
   } else if (mMultiUserSwitch.getParent() == mStatusIconArea && mKeyguardUserSwitcherShowing) {
     mStatusIconArea.removeView(mMultiUserSwitch);
   }
   if (mKeyguardUserSwitcher == null) {
     // If we have no keyguard switcher, the screen width is under 600dp. In this case,
     // we only show the multi-user switch if it's enabled through UserManager as well as
     // by the user.
     //控制其显示还是不显示
     if (mMultiUserSwitch.isMultiUserEnabled()) {
       mMultiUserSwitch.setVisibility(View.VISIBLE);
     } else {
       mMultiUserSwitch.setVisibility(View.GONE);
     }
   }
   //直接使其不显示就可以生效
   mMultiUserSwitch.setVisibility(View.GONE);
   mBatteryView.setForceShowPercent(mBatteryCharging && mShowPercentAvailable);
 }

mMultiUserSwitch就是显示多用户的控件,对应的代码在
frameworks/base/packages/SystemUI/res/layout/keyguard_status_bar.xml

<com.android.systemui.statusbar.phone.MultiUserSwitch android:id="@+id/multi_user_switch"
     android:layout_width="@dimen/multi_user_switch_width_keyguard"
     android:layout_height="match_parent"
     android:background="@drawable/ripple_drawable"
     android:layout_marginEnd="@dimen/multi_user_switch_keyguard_margin">
     <ImageView android:id="@+id/multi_user_avatar"
       android:layout_width="@dimen/multi_user_avatar_keyguard_size"
       android:layout_height="@dimen/multi_user_avatar_keyguard_size"
       android:layout_gravity="center"
       android:scaleType="centerInside"/>
   </com.android.systemui.statusbar.phone.MultiUserSwitch>

读者可自行查看,完毕~

来源：https://blog.csdn.net/baidu_33693586/article/details/111561045