SystemUI系列文章
Android8.1 MTK平台 SystemUI源码分析之 Notification流程
Android8.1 MTK平台 SystemUI源码分析之 电池时钟刷新
Android 8.1平台SystemUI 导航栏加载流程解析
一、从布局说起
前面的文章分析过，网络信号栏这块属于 system_icon_area，里面包含蓝牙、wifi、VPN、网卡、SIM卡网络类型、
数据流量符号、SIM卡信号格、电池、时钟。
先来看下 system_icon_area 对应的布局文件 system_icons.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/system_icons"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical">
<com.android.keyguard.AlphaOptimizedLinearLayout
android:id="@+id/statusIcons"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<include layout="@layout/signal_cluster_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/signal_cluster_margin_start"/>
<com.android.systemui.BatteryMeterView
android:id="@+id/battery"
android:layout_height="match_parent"
android:layout_width="0dp"
/>
</LinearLayout>
看到里面的 signal_cluster_view.xml 正是我们要找的信号栏布局文件，内容有点多，下面只截取我们关心的
vendor\mediatek\proprietary\packages\apps\SystemUI\res\layout\signal_cluster_view.xml
<com.android.systemui.statusbar.SignalClusterView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/signal_cluster"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingEnd="@dimen/signal_cluster_battery_padding"
>
... vpn
... 网卡
... wifi
手机信号栏
<LinearLayout
android:id="@+id/mobile_signal_group"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
>
</LinearLayout>
未插入SIM卡
<FrameLayout
android:id="@+id/no_sims_combo"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:contentDescription="@string/accessibility_no_sims">
<com.android.systemui.statusbar.AlphaOptimizedImageView
android:theme="?attr/lightIconTheme"
android:id="@+id/no_sims"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/stat_sys_no_sims"
/>
<com.android.systemui.statusbar.AlphaOptimizedImageView
android:theme="?attr/darkIconTheme"
android:id="@+id/no_sims_dark"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/stat_sys_no_sims"
android:alpha="0.0"
/>
</FrameLayout>
<View
android:id="@+id/wifi_airplane_spacer"
android:layout_width="@dimen/status_bar_airplane_spacer_width"
android:layout_height="4dp"
android:visibility="gone"
/>
飞行模式
<ImageView
android:id="@+id/airplane"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
/>
</com.android.systemui.statusbar.SignalClusterView>
可以看到最外层是自定义 SignalClusterView，xml里包含了 vpn、网卡、wifi、手机信号栏、未插入SIM卡、飞行模式对应的 view，那么接下来看下 SignalClusterView 代码
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\SignalClusterView.java
public class SignalClusterView extends LinearLayout implements NetworkControllerImpl.SignalCallback, SecurityController.SecurityControllerCallback, Tunable,DarkReceiver
public SignalClusterView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
Resources res = getResources();
mMobileSignalGroupEndPadding =
res.getDimensionPixelSize(R.dimen.mobile_signal_group_end_padding);
mMobileDataIconStartPadding =
res.getDimensionPixelSize(R.dimen.mobile_data_icon_start_padding);
mWideTypeIconStartPadding = res.getDimensionPixelSize(R.dimen.wide_type_icon_start_padding);
mSecondaryTelephonyPadding = res.getDimensionPixelSize(R.dimen.secondary_telephony_padding);
mEndPadding = res.getDimensionPixelSize(R.dimen.signal_cluster_battery_padding);
mEndPaddingNothingVisible = res.getDimensionPixelSize(
R.dimen.no_signal_cluster_battery_padding);
TypedValue typedValue = new TypedValue();
res.getValue(R.dimen.status_bar_icon_scale_factor, typedValue, true);
mIconScaleFactor = typedValue.getFloat();
//网络相关控制器
mNetworkController = Dependency.get(NetworkController.class);
//安全相关控制器
mSecurityController = Dependency.get(SecurityController.class);
updateActivityEnabled();
/// M: Add for Plugin feature @ {
mStatusBarExt = OpSystemUICustomizationFactoryBase.getOpFactory(context)
.makeSystemUIStatusBar(context);
/// @ }
mIsWfcEnable = SystemProperties.get("persist.mtk_wfc_support").equals("1");
}
看到 SignalClusterView 继承自 LinearLayout，实现了 NetworkController、SecurityController(这俩类控制图标的刷新逻辑)
构造方法中通过 Dependency.get() 实例化 NetworkController、SecurityController这俩核心
类，跟进 Dependent 类中大概看了下 get()方法，其实就是通过单例模式来进行管理，里面维护了一
个数据类型为 ArrayMap 的 DependencyProvider 集合对象，通过 put和 get 来存取。
接着回到 SignalClusterView 中看下控件都是怎么初始化的？
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mVpn = findViewById(R.id.vpn);
mEthernetGroup = findViewById(R.id.ethernet_combo);
mEthernet = findViewById(R.id.ethernet);
mEthernetDark = findViewById(R.id.ethernet_dark);
mWifiGroup = findViewById(R.id.wifi_combo);
mWifi = findViewById(R.id.wifi_signal);
mWifiDark = findViewById(R.id.wifi_signal_dark);
mWifiActivityIn = findViewById(R.id.wifi_in);
mWifiActivityOut= findViewById(R.id.wifi_out);
mAirplane = findViewById(R.id.airplane);
mNoSims = findViewById(R.id.no_sims);
mNoSimsDark = findViewById(R.id.no_sims_dark);
mNoSimsCombo = findViewById(R.id.no_sims_combo);
mWifiAirplaneSpacer = findViewById(R.id.wifi_airplane_spacer);
mWifiSignalSpacer = findViewById(R.id.wifi_signal_spacer);
mMobileSignalGroup = findViewById(R.id.mobile_signal_group);
maybeScaleVpnAndNoSimsIcons();
}
这里初始化了一堆刚刚布局文件里的控件，onFinishInflate() 在 xml 布局文件被加载完成后就会调
用，我们看到布局文件中都没有给控件设置对应的 background icon，而且有的 visibility 为
gone，那么信号栏图标是如何设置对应的icon和显示的呢？
二、SignalCluterView 详解
SignalCluterView 中调用频率很高的方法 apply() 就是幕后黑手,通过该方法控制一系列图标的更
新， 然而 SignalCallback 的如下每个回调最终都调用 apply()
1、setWifiIndicators() wifi开关状态、流量上下行
2、setMobileDataIndicators() 手机网络类型、信号强度、流量上下行、volte图标
3、setSubs() SIM卡识别结束
4、setNoSims() 未插入SIM卡状态
5、setEthernetIndicators() 网卡状态
6、setIsAirplaneMode() 飞行模式是否打开
7、setMobileDataEnabled() SIM卡数据流量是否开启
1、apply()
private void apply() {
if (mWifiGroup == null) return;
//vpn图标
if (mVpnVisible) {
if (mLastVpnIconId != mVpnIconId) {
setIconForView(mVpn, mVpnIconId);
mLastVpnIconId = mVpnIconId;
}
mIconLogger.onIconShown(SLOT_VPN);
mVpn.setVisibility(View.VISIBLE);
} else {
mIconLogger.onIconHidden(SLOT_VPN);
mVpn.setVisibility(View.GONE);
}
if (DEBUG) Log.d(TAG, String.format("vpn: %s", mVpnVisible ? "VISIBLE" : "GONE"));
//网卡图标
if (mEthernetVisible) {
if (mLastEthernetIconId != mEthernetIconId) {
setIconForView(mEthernet, mEthernetIconId);
setIconForView(mEthernetDark, mEthernetIconId);
mLastEthernetIconId = mEthernetIconId;
}
mEthernetGroup.setContentDescription(mEthernetDescription);
mIconLogger.onIconShown(SLOT_ETHERNET);
mEthernetGroup.setVisibility(View.VISIBLE);
} else {
mIconLogger.onIconHidden(SLOT_ETHERNET);
mEthernetGroup.setVisibility(View.GONE);
}
if (DEBUG) Log.d(TAG,
String.format("ethernet: %s",
(mEthernetVisible ? "VISIBLE" : "GONE")));
//wifi图标
if (mWifiVisible) {
if (mWifiStrengthId != mLastWifiStrengthId) {
setIconForView(mWifi, mWifiStrengthId);
setIconForView(mWifiDark, mWifiStrengthId);
mLastWifiStrengthId = mWifiStrengthId;
}
mIconLogger.onIconShown(SLOT_WIFI);
mWifiGroup.setContentDescription(mWifiDescription);
mWifiGroup.setVisibility(View.VISIBLE);
} else {
mIconLogger.onIconHidden(SLOT_WIFI);
mWifiGroup.setVisibility(View.GONE);
}
if (DEBUG) Log.d(TAG,
String.format("wifi: %s sig=%d",
(mWifiVisible ? "VISIBLE" : "GONE"),
mWifiStrengthId));
//wifi数据上下行图标
mWifiActivityIn.setVisibility(mWifiIn ? View.VISIBLE : View.GONE);
mWifiActivityOut.setVisibility(mWifiOut ? View.VISIBLE : View.GONE);
boolean anyMobileVisible = false;
/// M: Support for [Network Type on Statusbar]
/// A spacer is set between networktype and WIFI icon @ {
if (FeatureOptions.MTK_CTA_SET) {
anyMobileVisible = true;
}
/// @ }
//SIM 卡组图标
int firstMobileTypeId = 0;
for (PhoneState state : mPhoneStates) {
//PhoneState中的另一个apply()方法，对应网络类型、信号格等
if (state.apply(anyMobileVisible)) {
if (!anyMobileVisible) {
firstMobileTypeId = state.mMobileTypeId;
anyMobileVisible = true;
}
}
}
if (anyMobileVisible) {
mIconLogger.onIconShown(SLOT_MOBILE);
} else {
mIconLogger.onIconHidden(SLOT_MOBILE);
}
//飞行模式图标
if (mIsAirplaneMode) {
if (mLastAirplaneIconId != mAirplaneIconId) {
setIconForView(mAirplane, mAirplaneIconId);
mLastAirplaneIconId = mAirplaneIconId;
}
mAirplane.setContentDescription(mAirplaneContentDescription);
mIconLogger.onIconShown(SLOT_AIRPLANE);
mAirplane.setVisibility(VISIBLE);
} else {
mIconLogger.onIconHidden(SLOT_AIRPLANE);
mAirplane.setVisibility(View.GONE);
}
//wifi和飞行模式间隔
if (mIsAirplaneMode && mWifiVisible) {
mWifiAirplaneSpacer.setVisibility(View.VISIBLE);
} else {
mWifiAirplaneSpacer.setVisibility(View.GONE);
}
if (((anyMobileVisible && firstMobileTypeId != 0) || mNoSimsVisible) && mWifiVisible) {
mWifiSignalSpacer.setVisibility(View.VISIBLE);
} else {
mWifiSignalSpacer.setVisibility(View.GONE);
}
//未插入SIM卡图标组
if (mNoSimsVisible) {
mIconLogger.onIconShown(SLOT_MOBILE);
mNoSimsCombo.setVisibility(View.VISIBLE);
if (!Objects.equals(mSimDetected, mNoSimsCombo.getTag())) {
mNoSimsCombo.setTag(mSimDetected);
/// M:alps03596830 Don't show lack of signal when airplane mode is on.
if (mSimDetected && !mIsAirplaneMode) {
SignalDrawable d = new SignalDrawable(mNoSims.getContext());
d.setDarkIntensity(0);
mNoSims.setImageDrawable(d);
mNoSims.setImageLevel(SignalDrawable.getEmptyState(4));
SignalDrawable dark = new SignalDrawable(mNoSims.getContext());
dark.setDarkIntensity(1);
mNoSimsDark.setImageDrawable(dark);
mNoSimsDark.setImageLevel(SignalDrawable.getEmptyState(4));
} else {
mNoSims.setImageResource(R.drawable.stat_sys_no_sims);
mNoSimsDark.setImageResource(R.drawable.stat_sys_no_sims);
}
}
} else {
mIconLogger.onIconHidden(SLOT_MOBILE);
mNoSimsCombo.setVisibility(View.GONE);
}
/// M: Add for Plugin feature @ {
mStatusBarExt.setCustomizedNoSimsVisible(mNoSimsVisible);
mStatusBarExt.setCustomizedAirplaneView(mNoSimsCombo, mIsAirplaneMode);
/// @ }
boolean anythingVisible = mNoSimsVisible || mWifiVisible || mIsAirplaneMode
|| anyMobileVisible || mVpnVisible || mEthernetVisible;
setPaddingRelative(0, 0, anythingVisible ? mEndPadding : mEndPaddingNothingVisible, 0);
}
通过上面的代码发现 apply 控制了 VPN、网卡、wifi、飞行模式、未插入SIM 这几种图标的显示和隐
藏,我们看到里面有另外一个 state.apply(anyMobileVisible) 用来控制 SIM卡相关的图标，接下
来看下都有哪些图标呢？
2、内部类 PhoneState
PhoneState 是 SignalClusterView 中一个内部类，控制volte、网络类型、数据是否打开、信号格
数、漫游等图标
private class PhoneState {
//SIM卡id
private final int mSubId;
//SIM卡组是否可见
private boolean mMobileVisible = false;
//信号格数图标、数据流量是否打开图标(关闭是X，打开是网络类型小图标4G/3G)
private int mMobileStrengthId = 0, mMobileTypeId = 0;
///M: Add for [Network Type and volte on Statusbar]
//网络类型图标
private int mNetworkIcon = 0;
//volte图标
private int mVolteIcon = 0;
private int mLastMobileStrengthId = -1;
private int mLastMobileTypeId = -1;
private boolean mIsMobileTypeIconWide;
//网络类型描述，运营商类型，或只能拨打紧急号码
private String mMobileDescription, mMobileTypeDescription;
//整个PhoneState根本局，SIM信号栏组
private ViewGroup mMobileGroup;
//信号格控件、流量图标控件、是否漫游控件
private ImageView mMobile, mMobileDark, mMobileType, mMobileRoaming;
public boolean mRoaming;
//手机流量上下行控件
private ImageView mMobileActivityIn;
private ImageView mMobileActivityOut;
public boolean mActivityIn;
public boolean mActivityOut;
/// M: Add for new features @ {
// Add for [Network Type and volte on Statusbar]
//网络类型控件
private ImageView mNetworkType;
//volte控件
private ImageView mVolteType;
private boolean mIsWfcCase;
/// @ }
/// M: Add for plugin features. @ {
private boolean mDataActivityIn, mDataActivityOut;
private ISystemUIStatusBarExt mPhoneStateExt;
/// @ }
public PhoneState(int subId, Context context) {
//加载 mobile_signal_group_ext 布局文件
ViewGroup root = (ViewGroup) LayoutInflater.from(context)
.inflate(R.layout.mobile_signal_group_ext, null);
/// M: Add data group for plugin feature. @ {
mPhoneStateExt = OpSystemUICustomizationFactoryBase.getOpFactory(context)
.makeSystemUIStatusBar(context);
mPhoneStateExt.addCustomizedView(subId, context, root);
/// @ }
setViews(root);
mSubId = subId;
}
//控件初始化
public void setViews(ViewGroup root) {
mMobileGroup = root;
mMobile = root.findViewById(R.id.mobile_signal);
mMobileDark = root.findViewById(R.id.mobile_signal_dark);
mMobileType = root.findViewById(R.id.mobile_type);
///M: Add for [Network Type and volte on Statusbar]
mNetworkType = (ImageView) root.findViewById(R.id.network_type);
mVolteType = (ImageView) root.findViewById(R.id.volte_indicator_ext);
mMobileRoaming = root.findViewById(R.id.mobile_roaming);
mMobileActivityIn = root.findViewById(R.id.mobile_in);
mMobileActivityOut = root.findViewById(R.id.mobile_out);
// TODO: Remove the 2 instances because now the drawable can handle darkness.
mMobile.setImageDrawable(new SignalDrawable(mMobile.getContext()));
SignalDrawable drawable = new SignalDrawable(mMobileDark.getContext());
drawable.setDarkIntensity(1);
mMobileDark.setImageDrawable(drawable);
}
public boolean apply(boolean isSecondaryIcon) {
Log.e(TAG, "apply() mMobileVisible = " + mMobileVisible
+ ", mIsAirplaneMode = " + mIsAirplaneMode
+ ", mIsWfcEnable = " + mIsWfcEnable
+ ", mIsWfcCase = " + mIsWfcCase
+ ", mVolteIcon = " + mVolteIcon);
if (mMobileVisible && !mIsAirplaneMode) {
Log.e(TAG, "apply() into this code 1.. mMobileStrengthId=="+mMobileStrengthId);
//设置信号格数
if (mLastMobileStrengthId != mMobileStrengthId) {
mMobile.getDrawable().setLevel(mMobileStrengthId);
mMobileDark.getDrawable().setLevel(mMobileStrengthId);
mLastMobileStrengthId = mMobileStrengthId;
}
//设置流量是否打开
if (mLastMobileTypeId != mMobileTypeId) {
if (!mPhoneStateExt.disableHostFunction()) {
mMobileType.setImageResource(mMobileTypeId);
}
mLastMobileTypeId = mMobileTypeId;
}
mMobileGroup.setContentDescription(mMobileTypeDescription
+ " " + mMobileDescription);
mMobileGroup.setVisibility(View.VISIBLE);
showViewInWfcCase();
} else {
if (mIsAirplaneMode && (mIsWfcEnable && mVolteIcon != 0)) {
Log.e(TAG, "apply() into this code 2..");
/// M:Bug fix for show vowifi icon in flight mode
mMobileGroup.setVisibility(View.VISIBLE);
hideViewInWfcCase();
} else {
Log.e(TAG, "apply() into this code 3..");
if (DEBUG) {
Log.d(TAG, "setVisibility as GONE, this = " + this
+ ", mMobileVisible = " + mMobileVisible
+ ", mIsAirplaneMode = " + mIsAirplaneMode
+ ", mIsWfcEnable = " + mIsWfcEnable
+ ", mVolteIcon = " + mVolteIcon);
}
mMobileGroup.setVisibility(View.GONE);
}
}
/// M: Set all added or customised view. @ {
//更新网络类型和volte图标
setCustomizeViewProperty();
/// @ }
// When this isn't next to wifi, give it some extra padding between the signals.
mMobileGroup.setPaddingRelative(isSecondaryIcon ? mSecondaryTelephonyPadding : 0,
0, 0, 0);
mMobile.setPaddingRelative(
mIsMobileTypeIconWide ? mWideTypeIconStartPadding : mMobileDataIconStartPadding,
0, 0, 0);
mMobileDark.setPaddingRelative(
mIsMobileTypeIconWide ? mWideTypeIconStartPadding : mMobileDataIconStartPadding,
0, 0, 0);
if (true) Log.d(TAG, String.format("mobile: %s sig=%d typ=%d",
(mMobileVisible ? "VISIBLE" : "GONE"), mMobileStrengthId, mMobileTypeId));
Log.e(TAG, "mActivityIn="+mActivityIn+" mActivityOut="+mActivityOut);
if(!mIsWfcCase) {
//更新流量是否打开可见性
mMobileType.setVisibility(mMobileTypeId != 0 ? View.VISIBLE :View.GONE);
//漫游图标
mMobileRoaming.setVisibility(mRoaming ? View.VISIBLE : View.GONE);
//流量上下行图标
mMobileActivityIn.setVisibility(mActivityIn ? View.VISIBLE : View.GONE);
mMobileActivityOut.setVisibility(mActivityOut ? View.VISIBLE : View.GONE);
}
/// M: Add for support plugin featurs. @ {
//可通过op01/2/3等加载SystemUI，从6.0延伸来的
setCustomizedOpViews();
/// @ }
return mMobileVisible;
}
......
}
PhoneState 中的成员变量较多，我在代码里都已经加了注释了，就不细说了。加载的布局文件为
vendor\mediatek\proprietary\packages\apps\SystemUI\res_ext\layout\mobile_signal_group_ext.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Support [Network Type on Statusbar] The layout to wrap original
mobile_signal_group and add image view for show network Type -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
>
<ImageView
android:id="@+id/volte_indicator_ext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
/>
<ImageView
android:id="@+id/network_type"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:visibility="gone"
/>
<include layout="@layout/mobile_signal_group"/>
</LinearLayout>
布局文件中对应了 volte 和当前网络类型大图标, 再包含了 mobile_signal_group，里面就是上面提到的各种控件
vendor\mediatek\proprietary\packages\apps\SystemUI\res\layout\mobile_signal_group.xml
3、state.apply(anyMobileVisible) 调用流程
通过上面的分析可以总结下 信号栏的调用流程
NetworkControllerImpl.java 中注册了SIM卡状态改变广播(ACTION_SIM_STATE_CHANGED)，当收
到广播通知后调用到 notifyAllListeners()
通知所有的监听，mobileSignalController、mWifiSignalController、
mEthernetSignalController，分别对应手机信号显示、wifi信号、网卡显示通知
我们看到 mobileSignalController 中的回调 notifyListeners(SignalCallback callback),
在进行一系列的赋值操作后，最终回调到
SignalClusterView 中的 setMobileDataIndicators()，给 PhoneState 的成员变量赋值，
最后通过 apply()进行更新
4、PhoneState创建
通过刚刚对 PhoneState 类的介绍，发现通过构造方法 PhoneState(int subId, Context context) 可获取 PhoneState 对象
搜索当前文件找到在 inflatePhoneState(int subId) 中实例化 PhoneState
@Override
public void setSubs(List<SubscriptionInfo> subs) {
if (DEBUG) {
Log.d(TAG, "setSubs, this = " + this + ", size = " + subs.size()
+ ", subs = " + subs);
}
if (hasCorrectSubs(subs)) {//判断SIM卡是否改变
if (DEBUG) {
Log.d(TAG, "setSubs, hasCorrectSubs and return");
}
return;
}
mPhoneStates.clear();
if (mMobileSignalGroup != null) {
mMobileSignalGroup.removeAllViews();//移除手机信号组中的所有view
}
final int n = subs.size();//SIM卡数量
Log.d(TAG, "setSubs-clear subsize:" + subs.size() + "mStes" + mPhoneStates + ":" + this);
for (int i = 0; i < n; i++) {
inflatePhoneState(subs.get(i).getSubscriptionId());
}
if (isAttachedToWindow()) {
applyIconTint();//图标根据背景色动态变化
}
}
private PhoneState inflatePhoneState(int subId) {
PhoneState state = new PhoneState(subId, mContext);
if (mMobileSignalGroup != null) {
mMobileSignalGroup.addView(state.mMobileGroup);//添加view到手机信号组中
}
Log.d(TAG, "inflatePhoneState add subId:" + subId + ",state" + state + ":" + this);
mPhoneStates.add(state);//存储PhoneState 对象，方便快速修改状态
return state;
}
当SIM卡插入识别后将回调 setSubs(),先判断SIM卡是否改变，有效则移除 mobileGroup 中已添加
所有view，遍历SIM卡数量，通过 subId 创建 PhoneState，并将对应的view添加到 mobileGroup 中。
然后将 PhoneState对象存储到集合中，方便快速修改状态
这里简单说下 subId subid对应卡，slotid对应卡槽
slotid或者phoneid是指卡槽，双卡机器的卡槽1值为0，卡槽2值为1，依次类推
subid的值从1开始，每插入一个新卡，subId的值就会加1。
插入双卡后数据库中就会有subid值为1和2的两个数据条目，
拔卡插卡交换卡槽后，数据库并不会增加新项，只有插入一张新的sim卡才会增加一条id为3的数据条目
详细的介绍请看这篇 subId、slotId
5、SIM卡插入后更新图标流程
PhoneState 创建成功了并存到集合中，当收到 setMobileDataIndicators()回调后
给 PhoneState 成员变量赋值，赋值结束通过apply()更新
还记得上面说过的 apply() 中更新SIM卡图标的逻辑吧，
遍历 mPhoneStates 集合，调用PhoneState的apply()将成员变量值设置给对应的控件
int firstMobileTypeId = 0;
for (PhoneState state : mPhoneStates) {
if (state.apply(anyMobileVisible)) {
if (!anyMobileVisible) {
firstMobileTypeId = state.mMobileTypeId;
anyMobileVisible = true;
}
}
}
那么 setMobileDataIndicators() 是从哪里回调过来的呢？
分析找到 MobileSignalController 中的 notifyListeners()
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\policy\MobileSignalController.java
@Override
public void notifyListeners(SignalCallback callback) {
//获取资源ID组
MobileIconGroup icons = getIcons();
String contentDescription = getStringIfExists(getContentDescription());
String dataContentDescription = getStringIfExists(icons.mDataContentDescription);
//移动数据是否开启
final boolean dataDisabled = mCurrentState.iconGroup == TelephonyIcons.DATA_DISABLED
&& mCurrentState.userSetup;
/// M: Customize the signal strength icon id. @ {
//当前手机信号格数资源ID
int iconId = getCurrentIconId();
//用户可自定义的资源ID，该方法将目前的iconId原值赋给了iconID，如需定制可在此修改
iconId = mStatusBarExt.getCustomizeSignalStrengthIcon(
mSubscriptionInfo.getSubscriptionId(),
iconId,
mSignalStrength,
mDataNetType,
mServiceState);
/// @ }
// Show icon in QS when we are connected or data is disabled.
//是否显示移动数据图标
boolean showDataIcon = mCurrentState.dataConnected || dataDisabled;
//是否显示 mobileGroup、信号格数、SIM卡信息描述
IconState statusIcon = new IconState(mCurrentState.enabled && !mCurrentState.airplaneMode,
iconId, contentDescription);
int qsTypeIcon = 0;
IconState qsIcon = null;
String description = null;
// Only send data sim callbacks to QS.
if (mCurrentState.dataSim) {
qsTypeIcon = showDataIcon ? icons.mQsDataType : 0;
qsIcon = new IconState(mCurrentState.enabled
&& !mCurrentState.isEmergency, getQsCurrentIconId(), contentDescription);
//状态栏显示只能拨打紧急电话或当前的网络类型
description = mCurrentState.isEmergency ? null : mCurrentState.networkName;
}
//数据下行
boolean activityIn = mCurrentState.dataConnected
&& !mCurrentState.carrierNetworkChangeMode
&& mCurrentState.activityIn;
//数据上行
boolean activityOut = mCurrentState.dataConnected
&& !mCurrentState.carrierNetworkChangeMode
&& mCurrentState.activityOut;
showDataIcon &= mCurrentState.isDefault || dataDisabled;
//移动数据类型资源ID，关闭是X，打开是小的网络类型4G/3G/2G
int typeIcon = showDataIcon ? icons.mDataType : 0;
/// M: Add for lwa.
typeIcon = mCurrentState.lwaRegState == NetworkTypeUtils.LWA_STATE_CONNCTED
&& showDataIcon ? NetworkTypeUtils.LWA_ICON : typeIcon;
/** M: Support [Network Type on StatusBar], change the implement methods.
* Get the network icon base on service state.
* Add one more parameter for network type.
* @ { **/
//当前网络类型资源ID
int networkIcon = mCurrentState.networkIcon;
/// M: Support volte icon.Bug fix when airplane mode is on go to hide volte icon
//VOlTE资源ID
int volteIcon = mCurrentState.airplaneMode && !isImsOverWfc()
? 0 : mCurrentState.volteIcon;
/// M: when data disabled, common show data icon as x, but op do not need show it @ {
mStatusBarExt.isDataDisabled(mSubscriptionInfo.getSubscriptionId(), dataDisabled);
/// @ }
/// M: Customize the data type icon id. @ {
//可自定义移动数据类型资源ID（比如常见的上下箭头）
typeIcon = mStatusBarExt.getDataTypeIcon(
mSubscriptionInfo.getSubscriptionId(),
typeIcon,
mDataNetType,
mCurrentState.dataConnected ? TelephonyManager.DATA_CONNECTED :
TelephonyManager.DATA_DISCONNECTED,
mServiceState);
/// @ }
/// M: Customize the network type icon id. @ {
//可自定义网络类型资源ID
networkIcon = mStatusBarExt.getNetworkTypeIcon(
mSubscriptionInfo.getSubscriptionId(),
networkIcon,
mDataNetType,
mServiceState);
callback.setMobileDataIndicators(statusIcon, qsIcon, typeIcon, networkIcon, volteIcon,
qsTypeIcon,activityIn, activityOut, dataContentDescription, description,
icons.mIsWide, mSubscriptionInfo.getSubscriptionId(), mCurrentState.roaming);
/// M: update plmn label @{
mNetworkController.refreshPlmnCarrierLabel();
/// @}
}
这个方法比较重要，上面写了简单的注释，接下来我们会详细看下每个资源ID都是如何获取的？
在这之前我们先介绍下几个重要的 Bean 类
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\policy\SignalController.java
State
static class State {
boolean connected;
boolean enabled;
boolean activityIn;
boolean activityOut;
int level;
IconGroup iconGroup;
int inetCondition;
int rssi;
...
}
IconGroup
static class IconGroup {
final int[][] mSbIcons;
final int[][] mQsIcons;
final int[] mContentDesc;
final int mSbNullState;
final int mQsNullState;
final int mSbDiscState;
final int mQsDiscState;
final int mDiscContentDesc;
// For logging.
final String mName;
....
}
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\policy\MobileSignalController.java
MobileState
static class MobileState extends SignalController.State {
String networkName;//当前网络类型
String networkNameData;//移动数据网络类型
boolean dataSim;
boolean dataConnected;//数据是否连接
boolean isEmergency;//是否是紧急电话模式
boolean airplaneMode;//是否是飞行模式
boolean carrierNetworkChangeMode;//SIM卡网络类型是否改变
boolean isDefault;
boolean userSetup;//是否是用户操作
boolean roaming;//是否漫游
/// M: Add for 4G+W
int lwaRegState = NetworkTypeUtils.LWA_STATE_UNKNOWN;
/// M: For network type big icon.
int networkIcon;//网络类型大图标资源ID
/// M: Add for data network type.
int dataNetType;//移动数据网络类型
/// M: Add for op network tower type.
int customizedState;//自定义状态
/// M: Add for op signal strength tower icon.
int customizedSignalStrengthIcon;//自定义信号格资源ID
/// M: Add for volte @{
int imsRegState = ServiceState.STATE_POWER_OFF;
int imsCap;
int volteIcon;//volte资源ID
......
}
MobileIconGroup
static class MobileIconGroup extends SignalController.IconGroup {
final int mDataContentDescription; // mContentDescriptionDataType
final int mDataType;//移动数据网络类型资源ID
final boolean mIsWide;
final int mQsDataType;//下拉快捷访问资源
...
}
好了重要的Bean类介绍完了，接下来又要说一个重要的方法了 updateTelephony()
还是在 MobileSignalController.java 中
private final void updateTelephony() {
if (DEBUG && FeatureOptions.LOG_ENABLE) {
Log.d(mTag, "updateTelephonySignalStrength: hasService=" + hasService()
+ " ss=" + mSignalStrength);
}
//连接状态，是否在服务中
mCurrentState.connected = hasService() && mSignalStrength != null;
handleIWLANNetwork();
if (mCurrentState.connected) {
//SIM 卡信号格数级别 0~4格
if (!mSignalStrength.isGsm() && mConfig.alwaysShowCdmaRssi) {
mCurrentState.level = mSignalStrength.getCdmaLevel();
} else {
mCurrentState.level = mSignalStrength.getLevel();
}
/// M: Customize the signal strength level. @ {
//客户可自定义
mCurrentState.level = mStatusBarExt.getCustomizeSignalStrengthLevel(
mCurrentState.level, mSignalStrength, mServiceState);
/// @ }
}
//当前网络类型获取对应的图标组
if (mNetworkToIconLookup.indexOfKey(mDataNetType) >= 0) {
mCurrentState.iconGroup = mNetworkToIconLookup.get(mDataNetType);
} else {
mCurrentState.iconGroup = mDefaultIcons;
}
/// M: Add for data network type.
//数据网络类型
mCurrentState.dataNetType = mDataNetType;
//数据状态
mCurrentState.dataConnected = mCurrentState.connected
&& mDataState == TelephonyManager.DATA_CONNECTED;
/// M: Add for op network tower type.
mCurrentState.customizedState = mStatusBarExt.getCustomizeCsState(mServiceState,
mCurrentState.customizedState);
/// M: Add for op signal strength tower icon.
mCurrentState.customizedSignalStrengthIcon = mStatusBarExt.getCustomizeSignalStrengthIcon(
mSubscriptionInfo.getSubscriptionId(),
mCurrentState.customizedSignalStrengthIcon,
mSignalStrength,
mDataNetType,
mServiceState);
mCurrentState.roaming = isRoaming();
if (isCarrierNetworkChangeActive()) {
mCurrentState.iconGroup = TelephonyIcons.CARRIER_NETWORK_CHANGE;
} else if (isDataDisabled()) {//数据未打开，对应x
mCurrentState.iconGroup = TelephonyIcons.DATA_DISABLED;
}
if (isEmergencyOnly() != mCurrentState.isEmergency) {
mCurrentState.isEmergency = isEmergencyOnly();
mNetworkController.recalculateEmergency();
}
// Fill in the network name if we think we have it.
//当前网络运营商
if (mCurrentState.networkName == mNetworkNameDefault && mServiceState != null
&& !TextUtils.isEmpty(mServiceState.getOperatorAlphaShort())) {
mCurrentState.networkName = mServiceState.getOperatorAlphaShort();
}
/// M: For network type big icon. 网络类型大图标
mCurrentState.networkIcon =
NetworkTypeUtils.getNetworkTypeIcon(mServiceState, mConfig, hasService());
/// M: For volte type icon. volte图标
mCurrentState.volteIcon = getVolteIcon();
//通知更新，最终回调到notifyListeners()中
notifyListenersIfNecessary();
}
基本上获取资源ID的方法都在 updateTelephony()中了，那么都在那里调用了 updateTelephony()?
MobileSignalController中构造方法初始化了 MobilePhoneStateListener 分别监听了
mPhone.listen(mPhoneStateListener,
PhoneStateListener.LISTEN_SERVICE_STATE//服务状态改变，可用、不可用
| PhoneStateListener.LISTEN_SIGNAL_STRENGTHS//信号强度改变，用于获取dbm、asu
| PhoneStateListener.LISTEN_CALL_STATE//电话状态改变，空闲、来电、通话
| PhoneStateListener.LISTEN_DATA_CONNECTION_STATE//数据网络连接状态，网络断开、正在连接中、已连接上
| PhoneStateListener.LISTEN_DATA_ACTIVITY//数据上下行状态
| PhoneStateListener.LISTEN_CARRIER_NETWORK_CHANGE);//网络状态发送改变
class MobilePhoneStateListener extends PhoneStateListener {
public MobilePhoneStateListener(int subId, Looper looper) {
super(subId, looper);
}
@Override
public void onSignalStrengthsChanged(SignalStrength signalStrength) {
...
updateTelephony();
}
@Override
public void onServiceStateChanged(ServiceState state) {
...
updateTelephony();
}
@Override
public void onDataConnectionStateChanged(int state, int networkType) {
...
updateTelephony();
}
@Override
public void onDataActivity(int direction) {
...
setActivity(direction);
}
@Override
public void onCarrierNetworkChange(boolean active) {
...
updateTelephony();
}
/// M: Add for Plugin feature. @{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
...
updateTelephony();
}
/// @}
};
LISTEN_SIGNAL_STRENGTHS、LISTEN_CALL_STATE、LISTEN_CARRIER_NETWORK_CHANGE
这三个监听应该是我们平常用较多的，好了说了这么久，接下来重要看获取资源ID的具体方法了
5.1、Vlote资源ID
mCurrentState.volteIcon = getVolteIcon();
private int getVolteIcon() {
int icon = 0;
if (isImsOverWfc()) {
boolean needShowWfcSysIcon = mStatusBarExt.needShowWfcIcon();
if (needShowWfcSysIcon) {
icon = NetworkTypeUtils.WFC_ICON;
}
} else if (isImsOverVoice() && isLteNetWork()) {
if (mCurrentState.imsRegState == ServiceState.STATE_IN_SERVICE) {
//volte可用
icon = NetworkTypeUtils.VOLTE_ICON;
} else if(FeatureOptions.MTK_CT_MIXED_VOLTE_SUPPORT &&
SIMHelper.isSecondaryCSIMForMixedVolte(mSubscriptionInfo.getSubscriptionId()) &&
mCurrentState.imsRegState == ServiceState.STATE_OUT_OF_SERVICE) {
if (DEBUG) {
Log.d(mTag, "set dis volte icon");
}//volte不可用
icon = NetworkTypeUtils.VOLTE_DIS_ICON;
}
}
/// M: add for disconnected volte feature. @{
mStatusBarExt.setImsRegInfo(mSubscriptionInfo.getSubscriptionId(),
mCurrentState.imsRegState, isImsOverWfc(), isImsOverVoice());
/// @}
return icon;
}
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\mediatek\systemui\statusbar\networktype\NetworkTypeUtils.java
public static final int VOLTE_ICON = R.drawable.stat_sys_volte;
5.2、网络类型大图标资源ID
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\mediatek\systemui\statusbar\networktype\NetworkTypeUtils.java
mCurrentState.networkIcon =
NetworkTypeUtils.getNetworkTypeIcon(mServiceState, mConfig, hasService());
public static int getNetworkTypeIcon(ServiceState serviceState, Config config,
boolean hasService) {
if (!hasService) {
// Not in service, no network type. 未注册成功，比如废卡、停机卡
return 0;
}
//通过 serviceState 获取当前注册的网络类型
int tempNetworkType = getNetworkType(serviceState);
Integer iconId = sNetworkTypeIcons.get(tempNetworkType);
if (iconId == null) {
iconId = tempNetworkType == TelephonyManager.NETWORK_TYPE_UNKNOWN ? 0 :
config.showAtLeast3G ? R.drawable.stat_sys_network_type_3g :
R.drawable.stat_sys_network_type_g;
}
return iconId.intValue();
}
private static int getNetworkType(ServiceState serviceState) {
int type = TelephonyManager.NETWORK_TYPE_UNKNOWN;
if (serviceState != null) {
type = serviceState.getDataNetworkType() != TelephonyManager.NETWORK_TYPE_UNKNOWN ?
serviceState.getDataNetworkType() : serviceState.getVoiceNetworkType();
}
return type;
}
//网络类型-资源ID 4g/3g/2g/e/1x
static final Map<Integer, Integer> sNetworkTypeIcons = new HashMap<Integer, Integer>() {
{
// For CDMA 3G
put(TelephonyManager.NETWORK_TYPE_EVDO_0, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_EVDO_A, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_EVDO_B, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_EHRPD, R.drawable.stat_sys_network_type_3g);
// For CDMA 1x
put(TelephonyManager.NETWORK_TYPE_CDMA, R.drawable.stat_sys_network_type_1x);
put(TelephonyManager.NETWORK_TYPE_1xRTT, R.drawable.stat_sys_network_type_1x);
// Edge
put(TelephonyManager.NETWORK_TYPE_EDGE, R.drawable.stat_sys_network_type_e);
// 3G
put(TelephonyManager.NETWORK_TYPE_UMTS, R.drawable.stat_sys_network_type_3g);
// For 4G
put(TelephonyManager.NETWORK_TYPE_LTE, R.drawable.stat_sys_network_type_4g);
// 3G
put(TelephonyManager.NETWORK_TYPE_HSDPA, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_HSUPA, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_HSPA, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_HSPAP, R.drawable.stat_sys_network_type_3g);
put(TelephonyManager.NETWORK_TYPE_IWLAN, 0);
}
};
5.3、移动数据类型资源ID
//mNetworkToIconLookup 和上面的网络类型 Map有点类似，键都是网络类型，
//不同的是，这次的key是上面介绍过的 MobileIconGroup
if (mNetworkToIconLookup.indexOfKey(mDataNetType) >= 0) {
mCurrentState.iconGroup = mNetworkToIconLookup.get(mDataNetType);
} else {
mCurrentState.iconGroup = mDefaultIcons;
}
if (isCarrierNetworkChangeActive()) {
mCurrentState.iconGroup = TelephonyIcons.CARRIER_NETWORK_CHANGE;
} else if (isDataDisabled()) {
mCurrentState.iconGroup = TelephonyIcons.DATA_DISABLED;
}
vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\statusbar\policy\TelephonyIcons.java
class TelephonyIcons {
//***** Data connection icons
//状态栏快捷访问，其实和下面的差多不
static final int QS_DATA_G = R.drawable.ic_qs_signal_g;
static final int QS_DATA_3G = R.drawable.ic_qs_signal_3g;
static final int QS_DATA_E = R.drawable.ic_qs_signal_e;
static final int QS_DATA_H = R.drawable.ic_qs_signal_h;
static final int QS_DATA_1X = R.drawable.ic_qs_signal_1x;
static final int QS_DATA_4G = R.drawable.ic_qs_signal_4g;
static final int QS_DATA_4G_PLUS = R.drawable.ic_qs_signal_4g_plus;
static final int QS_DATA_LTE = R.drawable.ic_qs_signal_lte;
static final int QS_DATA_LTE_PLUS = R.drawable.ic_qs_signal_lte_plus;
static final int FLIGHT_MODE_ICON = R.drawable.stat_sys_airplane_mode;
//此处的图标为小图标，网络类型
static final int ICON_LTE = R.drawable.stat_sys_data_fully_connected_lte;
static final int ICON_LTE_PLUS = R.drawable.stat_sys_data_fully_connected_lte_plus;
static final int ICON_G = R.drawable.stat_sys_data_fully_connected_g;
static final int ICON_E = R.drawable.stat_sys_data_fully_connected_e;
static final int ICON_H = R.drawable.stat_sys_data_fully_connected_h;
static final int ICON_3G = R.drawable.stat_sys_data_fully_connected_3g;
static final int ICON_4G = R.drawable.stat_sys_data_fully_connected_4g;
static final int ICON_4G_PLUS = R.drawable.stat_sys_data_fully_connected_4g_plus;
static final int ICON_1X = R.drawable.stat_sys_data_fully_connected_1x;
//流量未打开
static final int ICON_DATA_DISABLED = R.drawable.stat_sys_data_disabled;
static final int QS_ICON_DATA_DISABLED = R.drawable.ic_qs_data_disabled;
...
static final MobileIconGroup DATA_DISABLED = new MobileIconGroup(
"DataDisabled",
null,
null,
AccessibilityContentDescriptions.PHONE_SIGNAL_STRENGTH,
0, 0,
0,
0,
AccessibilityContentDescriptions.PHONE_SIGNAL_STRENGTH[0],
R.string.accessibility_cell_data_off,
TelephonyIcons.ICON_DATA_DISABLED,//这个值对应的就是 移动数据类型资源ID
false,
TelephonyIcons.QS_ICON_DATA_DISABLED
);
}
MobileIconGroup 的倒数第三个参数就是 移动数据类型资源ID
5.4、信号格数资源ID
if (mCurrentState.connected) {
if (!mSignalStrength.isGsm() && mConfig.alwaysShowCdmaRssi) {
mCurrentState.level = mSignalStrength.getCdmaLevel();
} else {
mCurrentState.level = mSignalStrength.getLevel();
}
/// M: Customize the signal strength level. @ {
mCurrentState.level = mStatusBarExt.getCustomizeSignalStrengthLevel(
mCurrentState.level, mSignalStrength, mServiceState);
/// @ }
}
信号格数对应的是 SignalDrawable，通过 setLevel()来控制显示几格，其实以上的大部分资源ID都是
通过 Vector 标签绘制而来的，里面都是一堆 path，开始看可能会觉得很迷糊，可以把xml文件拷贝到
AS中进行预览，再学上一些基础语法就可对简单的图形进行自定义修改。比方说6.0的信号格数是通过
vector 绘制的，格与格之间是有间隔，而8.1是通过 SignalDrawable绘制，是一个填满的三角形
修改前样式
修改后样式
来看下 mSignalStrength.getLevel() 方法
frameworks/base/telephony/java/android/telephony/SignalStrength.java
public int getLevel() {
int level = 0;
if (isGsm) { //移动或联通卡
level = getLteLevel(); //首先获取4G信号格
if (level == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) { //未获取到
level = getTdScdmaLevel(); //获取移动或联通的3G信号格
if (level == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {//仍然未获取
level = getGsmLevel(); //获取移动或联通的2G信号格
}
}
} else {//电信
int cdmaLevel = getCdmaLevel(); //获取电信2G信号格
int evdoLevel = getEvdoLevel(); //获取电信3G信号格
if (evdoLevel == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
/* We don't know evdo, use cdma */
level = cdmaLevel;
} else if (cdmaLevel == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
/* We don't know cdma, use evdo */
level = evdoLevel;
} else {
/* We know both, use the lowest level */
level = cdmaLevel < evdoLevel ? cdmaLevel : evdoLevel;
}
}
if (DBG) log("getLevel=" + level);
return level;
}
在此介绍下手机是几模的配置：GSM是移动和联通公用的band；LTE从编码方式上分为TDD和FDD，从频段上分有各种不同的band
移动：GSM、TDSCDMA、LTE(TDD)
联通：GSM、WCDMA、LTE(FDD)
电信：CDMA、EVDO、LTE(FDD)
因此如果手机支持GSM、WCDMA、TDSCDMA、TDD-LTE、FDD-LTE 这是五模；加上 CDMA、EVDO 就是七模
5.5、漫游资源ID R.drawable.stat_sys_roaming
大写的R
三、总结
信号栏的定制还是很容易的，只要理清楚了控件和对应的回调逻辑，加上日志打印，就能搞定你想要的效果。
四、相关资源
这里附上我定制使用的drawable文件
