需求:如上圖,需要隱藏右上角的多用戶藍色圖標.
修改后結果如下:

鎖屏相關的布局在SystemUI

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

//更新多用戶圖標的可見性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.//控制其顯示還是不顯示if (mMultiUserSwitch.isMultiUserEnabled()) {mMultiUserSwitch.setVisibility(View.VISIBLE);} else {mMultiUserSwitch.setVisibility(View.GONE);}}//直接使其不顯示就可以生效mMultiUserSwitch.setVisibility(View.GONE);mBatteryView.setForceShowPercent(mBatteryCharging && mShowPercentAvailable);}

mMultiUserSwitch就是顯示多用戶的控件,對應的代碼在
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>

讀者可自行查看,完畢~

Android10 Frameworks專欄其他文章：
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android10 禁止下拉狀態欄
android10 動態添加和隱藏一級菜單

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