Android P在状态栏加入USB图标并根据插入/拔出状态显示/隐藏USB图标

最新推荐文章于 2023-02-01 21:06:38 发布

原创最新推荐文章于 2023-02-01 21:06:38 发布 · 1.1k 阅读

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#systemui #状态 #usb #图标

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本文详细介绍如何在Android系统状态栏中集成USB图标，包括修改system_icons.xml文件以添加USB图标资源，以及在CollapsedStatusBarFragment.java中实现USB设备连接与断开的逻辑响应。

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

在system_icons.xml中加入USB图标的UI：

<ImageView
  	android:id="@+id/icon_usb"
  	android:paddingStart="@dimen/status_bar_padding_start"
android:layout_width="@dimen/status_bar_icon_size"
	android:layout_height="@dimen/status_bar_icon_size"
	android:src="@drawable/ic_usb_white_24dp"
	android:scaleType="center"
	android:visibility="gone"
	android:paddingEnd="@dimen/signal_cluster_battery_padding"/>

在CollapsedStatusBarFragment.java中加入USB图标的逻辑：

import android.hardware.usb.UsbManager;

private ImageView mIconUsb;
mIconUsb = mStatusBar.findViewById(R.id.icon_usb);

IntentFilter filter = new IntentFilter();
filter.addAction(MUSIC_STATUSBAR);
filter.addAction(MUSIC_START);
filter.addAction(MUSIC_END);
filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
getContext().registerReceiver(mBroadcastReceiver,filter);

private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        switch(intent.getAction()){

            case MUSIC_STATUSBAR:
                mHeadUpMusic.setVisibility(View.VISIBLE);
                mIconMusic.setVisibility(View.VISIBLE);
                String string = (String) intent.getStringExtra("Music_Status");
                updateHeadUpMusic(string);
                break;
            case MUSIC_START:
                mHeadUpMusic.setVisibility(View.VISIBLE);
                mIconMusic.setVisibility(View.VISIBLE);
                String string1 = (String) intent.getStringExtra("StatusBar_Music_Msg");    
                updateHeadUpMusic(string1);
                break;
            case MUSIC_END:
                mHeadUpMusic.setVisibility(View.GONE);
                mIconMusic.setVisibility(View.GONE);
                Log.i("MUSIC_END","GONE");
                break;
            case UsbManager.ACTION_USB_DEVICE_ATTACHED:
                mIconUsb.setVisibility(View.VISIBLE);
                break;
            case UsbManager.ACTION_USB_DEVICE_DETACHED:
                mIconUsb.setVisibility(View.GONE);
                break;
      }
        
    }
};