方法一、Android 系统UI：状态栏屏蔽特定图标不显示
在Android设备上，状态栏是用户界面的重要组成部分。它包含了各种系统图标，如电池、信号强度、时间等。有时候，我们可能希望屏蔽某个特定的图标，使其在状态栏中不显示。本文将详细介绍如何通过修改代码来实现这一目标。
首先，我们需要创建一个自定义的 Android 应用程序，并在其中修改 SystemUI 的源代码。以下是一些关键步骤，供你参考：
步骤 1：创建一个新的 Android 项目
首先，在 Android 开发环境中创建一个新的 Android 项目。你可以使用 Android Studio 或其他适合的开发工具。
步骤 2：导入 SystemUI 源代码
在项目结构中导入 SystemUI 的源代码。SystemUI 是 Android 系统的一部分，它负责管理状态栏和其他系统UI元素。
步骤 3：定位到状态栏图标布局
在 SystemUI 源代码中，你需要找到负责状态栏图标布局的文件。该文件通常位于 frameworks/base/packages/SystemUI/res/layout 目录下，名为 status_bar.xml 或类似的名称。
步骤 4：查找要屏蔽的图标
在状态栏图标布局文件中，查找要屏蔽的图标。这些图标通常以 <ImageView> 元素的形式存在，并且每个图标都有一个唯一的标识符。
步骤 5：修改图标的可见性
找到要屏蔽的图标后，你可以通过修改其可见性来使其不显示。在 Java 代码中，你可以使用 setVisibility() 方法来实现。以下是一些示例代码：
方法二、通过修改StatusBarlconController
在Android的系统中， 状态栏的lcon管理控制是由StatusBarlconController.java 来负责的，所以我们可以阅读其源码，查找解决方案。类代码路径：
frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
1、下面来阅读StatusBarlconController源码
重点关注 getIconHideList
注释解释 /** Reads the default hide list from config value unless hideListStr is provided. */
“除非提供了hideListStr，否则从配置值中读取默认的隐藏列表。”
static ArraySet<String> getIconHideList(Context context, String hideListStr) {
.....
String[] hideList = hideListStr == null
? context.getResources().getStringArray(R.array.config_statusBarIconsToExclude)
: hideListStr.split(",");
...
config_statusBarIconsToExclude默认配置
/** Copyright (C) 2017 The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file* except in compliance with the License. You may obtain a copy of the License at** http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software distributed under the* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY* KIND, either express or implied. See the License for the specific language governing* permissions and limitations under the License.*/package com.android.systemui.statusbar.phone;import static com.android.systemui.statusbar.phone.StatusBarIconHolder.TYPE_ICON;
import static com.android.systemui.statusbar.phone.StatusBarIconHolder.TYPE_MOBILE;
import static com.android.systemui.statusbar.phone.StatusBarIconHolder.TYPE_WIFI;import android.annotation.Nullable;
import android.content.Context;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.ArraySet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;import androidx.annotation.VisibleForTesting;import com.android.internal.statusbar.StatusBarIcon;
import com.android.systemui.Dependency;
import com.android.systemui.R;
import com.android.systemui.demomode.DemoModeCommandReceiver;
import com.android.systemui.plugins.DarkIconDispatcher;
import com.android.systemui.plugins.DarkIconDispatcher.DarkReceiver;
import com.android.systemui.statusbar.FeatureFlags;
import com.android.systemui.statusbar.StatusBarIconView;
import com.android.systemui.statusbar.StatusBarMobileView;
import com.android.systemui.statusbar.StatusBarWifiView;
import com.android.systemui.statusbar.StatusIconDisplayable;
import com.android.systemui.statusbar.phone.StatusBarSignalPolicy.CallIndicatorIconState;
import com.android.systemui.statusbar.phone.StatusBarSignalPolicy.MobileIconState;
import com.android.systemui.statusbar.phone.StatusBarSignalPolicy.WifiIconState;import java.util.ArrayList;
import java.util.List;public interface StatusBarIconController {/*** When an icon is added with TAG_PRIMARY, it will be treated as the primary icon* in that slot and not added as a sub slot.*/int TAG_PRIMARY = 0;/** */void addIconGroup(IconManager iconManager);/** */void removeIconGroup(IconManager iconManager);/** */void setExternalIcon(String slot);/** */void setIcon(String slot, int resourceId, CharSequence contentDescription);/** */void setIcon(String slot, StatusBarIcon icon);/** */void setSignalIcon(String slot, WifiIconState state);/** */void setMobileIcons(String slot, List<MobileIconState> states);/*** Display the no calling & SMS icons.*/void setCallStrengthIcons(String slot, List<CallIndicatorIconState> states);/*** Display the no calling & SMS icons.*/void setNoCallingIcons(String slot, List<CallIndicatorIconState> states);public void setIconVisibility(String slot, boolean b);/*** Sets the live region mode for the icon* @see android.view.View#setAccessibilityLiveRegion(int)* @param slot Icon slot to set region for* @param accessibilityLiveRegion live region mode for the icon*/void setIconAccessibilityLiveRegion(String slot, int accessibilityLiveRegion);/*** If you don't know what to pass for `tag`, either remove all icons for slot, or use* TAG_PRIMARY to refer to the first icon at a given slot.*/void removeIcon(String slot, int tag);/** */void removeAllIconsForSlot(String slot);// TODO: See if we can rename this tunable name.String ICON_HIDE_LIST = "icon_blacklist";/** Reads the default hide list from config value unless hideListStr is provided. */static ArraySet<String> getIconHideList(Context context, String hideListStr) {ArraySet<String> ret = new ArraySet<>();String[] hideList = hideListStr == null? context.getResources().getStringArray(R.array.config_statusBarIconsToExclude): hideListStr.split(",");for (String slot : hideList) {if (!TextUtils.isEmpty(slot)) {ret.add(slot);}}return ret;}/*** Version of ViewGroup that observes state from the DarkIconDispatcher.*/class DarkIconManager extends IconManager {private final DarkIconDispatcher mDarkIconDispatcher;private int mIconHPadding;public DarkIconManager(LinearLayout linearLayout, FeatureFlags featureFlags) {super(linearLayout, featureFlags);mIconHPadding = mContext.getResources().getDimensionPixelSize(R.dimen.status_bar_icon_padding);mDarkIconDispatcher = Dependency.get(DarkIconDispatcher.class);}@Overrideprotected void onIconAdded(int index, String slot, boolean blocked,StatusBarIconHolder holder) {StatusIconDisplayable view = addHolder(index, slot, blocked, holder);mDarkIconDispatcher.addDarkReceiver((DarkReceiver) view);}@Overrideprotected LayoutParams onCreateLayoutParams() {LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, mIconSize);lp.setMargins(mIconHPadding, 0, mIconHPadding, 0);return lp;}@Overrideprotected void destroy() {for (int i = 0; i < mGroup.getChildCount(); i++) {mDarkIconDispatcher.removeDarkReceiver((DarkReceiver) mGroup.getChildAt(i));}mGroup.removeAllViews();}@Overrideprotected void onRemoveIcon(int viewIndex) {mDarkIconDispatcher.removeDarkReceiver((DarkReceiver) mGroup.getChildAt(viewIndex));super.onRemoveIcon(viewIndex);}@Overridepublic void onSetIcon(int viewIndex, StatusBarIcon icon) {super.onSetIcon(viewIndex, icon);mDarkIconDispatcher.applyDark((DarkReceiver) mGroup.getChildAt(viewIndex));}@Overrideprotected DemoStatusIcons createDemoStatusIcons() {DemoStatusIcons icons = super.createDemoStatusIcons();mDarkIconDispatcher.addDarkReceiver(icons);return icons;}@Overrideprotected void exitDemoMode() {mDarkIconDispatcher.removeDarkReceiver(mDemoStatusIcons);super.exitDemoMode();}}
二、打开config_statusBarIconsToExclude默认配置文件
文件路径
frameworks/base/packages/SystemUI/res/xml/tuner_prefs.xml新增com.android.systemui.tuner.StatusBarSwitch类似的代码
<com.android.systemui.tuner.StatusBarSwitchandroid:key="bluetooth"android:title="@string/quick_settings_bluetooth_label" /><com.android.systemui.tuner.StatusBarSwitchandroid:key="cameratoggle"android:title="@string/quick_settings_camera_label" /><!-- nfc --><!-- tty --><!-- speakerphone --><com.android.systemui.tuner.StatusBarSwitchandroid:key="zen"android:title="@string/quick_settings_dnd_label" /><!-- mute --><com.android.systemui.tuner.StatusBarSwitchandroid:key="volume"android:title="@*android:string/volume_unknown" /><com.android.systemui.tuner.StatusBarSwitchandroid:key="wifi"android:title="@string/quick_settings_wifi_label" /><com.android.systemui.tuner.StatusBarSwitchandroid:key="ethernet"android:title="@string/status_bar_ethernet" /><com.android.systemui.tuner.StatusBarSwitchandroid:key="mobile"android:title="@string/quick_settings_cellular_detail_title" /><com.android.systemui.tuner.StatusBarSwitchandroid:key="airplane"android:title="@string/status_bar_airplane" /><!-- 隐藏battery新增 rotate--><com.android.systemui.tuner.StatusBarSwitchandroid:key="rotate"android:title="@string/status_bar_settings_auto_rotation" /><!-- other weird signal stuff --><!-- <com.android.systemui.tuner.BatteryPreferenceandroid:title="@string/battery"android:summary="%s"android:entries="@array/battery_options" /> -->
