代码路径: frameworks/base/packages/SystemUI/res/layout/system_icons.xml frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/CollapsedStatusBarFragment.java frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarMobileView.java frameworks/base/packages/SystemUI/res/layout/status_bar_mobile_signal_group.xml frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarWifiView.java frameworks/base/packages/SystemUI/res/layout/status_bar_wifi_group.xml 在system_icons.xml文件中,BatteryMeterView 主要是处理电量UI显示,StatusIconContainer 主要是处理wifi和4GUI显示
<com.android.systemui.statusbar.phone.StatusIconContainer android:id="@+id/statusIcons"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:paddingEnd="@dimen/signal_cluster_bat
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