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色图标.
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

读者可自行查看,完毕~

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