2021-10-19 Android 上面的状态栏耳机图标显示分析和增加一个提示图标

一、耳机图标的显示效果如下图 

二，简单分析一下实现代码。实现代码在

 vendormediatekproprietarypackagesappsSystemUIsrccomandroidsystemuistatusbarphonePhoneStatusBarPolicy.java，可以知道在接受到广播AudioManager.ACTION_HEADSET_PLUG后就更新图标。

三，模仿上面的耳机图标，添加一个自定义的图标。PhoneStatusBarPolicy.java修改的代码如下。

diff --git a/vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java b/vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
old mode 100644
new mode 100755
index e3d5c08..2be9b9f
--- a/vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
+++ b/vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarPolicy.java
@@ -107,6 +107,7 @@ public class PhoneStatusBarPolicy
     private final String mSlotManagedProfile;
     private final String mSlotRotate;
     private final String mSlotHeadset;
+	private final String mTestHint;
     private final String mSlotDataSaver;
     private final String mSlotLocation;
     private final String mSlotSensorsOff;
@@ -201,7 +202,9 @@ public class PhoneStatusBarPolicy
                 com.android.internal.R.string.status_bar_managed_profile);
         mSlotRotate = resources.getString(com.android.internal.R.string.status_bar_rotate);
         mSlotHeadset = resources.getString(com.android.internal.R.string.status_bar_headset);
-        mSlotDataSaver = resources.getString(com.android.internal.R.string.status_bar_data_saver);
+		mTestHint = "testhint";
+
+		mSlotDataSaver = resources.getString(com.android.internal.R.string.status_bar_data_saver);
         mSlotLocation = resources.getString(com.android.internal.R.string.status_bar_location);
         mSlotSensorsOff = resources.getString(com.android.internal.R.string.status_bar_sensors_off);
         mSlotScreenRecord = resources.getString(
@@ -221,6 +224,7 @@ public class PhoneStatusBarPolicy
         IntentFilter filter = new IntentFilter();
 
         filter.addAction(AudioManager.ACTION_HEADSET_PLUG);
+		filter.addAction("android.intent.action.TESTHINT");
         filter.addAction(Intent.ACTION_SIM_STATE_CHANGED);
         filter.addAction(TelecomManager.ACTION_CURRENT_TTY_MODE_CHANGED);
         filter.addAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE);
@@ -637,6 +641,16 @@ public class PhoneStatusBarPolicy
             mIconController.setIconVisibility(mSlotHeadset, false);
         }
     }
+    private void updatetesthint(Intent intent) {
+        boolean connected = intent.getIntExtra("state", 0) != 0;
+        Log.d(TAG, "updatetesthint mTestHint  connected:" + connected);
+        if (connected) {
+            mIconController.setIcon(mTestHint,  R.drawable.stat_sys_hotspot, "testhintinfo");
+            mIconController.setIconVisibility(mTestHint, true);
+        } else {
+            mIconController.setIconVisibility(mTestHint, false);
+        }
+    }
 
     @Override
     public void onDataSaverChanged(boolean isDataSaving) {
@@ -681,6 +695,9 @@ public class PhoneStatusBarPolicy
                 case AudioManager.ACTION_HEADSET_PLUG:
                     updateHeadsetPlug(intent);
                     break;
+				case "android.intent.action.TESTHINT":
+					updatetesthint(intent);
+					break;
                 /// M: [Multi-User] Register Alarm intent by user @{
                 case Intent.ACTION_USER_SWITCHED:
                     updateAlarm();

四、adb 发广播，自定义的图标会显示出来，如第一个图右侧的第一个图标。系统里面可以通过广播的形式更新图标提示用户。

五、参考文章

Android在状态栏增加耳机拔插图标_lme525的专栏-CSDN博客

在状态栏增加图标（Android 6.0） - 快乐的铲屎官 - 博客园