查找是否在 Android 中连接了外部 USB 或蓝牙键盘

Finding if external usb or bluetooth keyboard attached in Android(查找是否在 Android 中连接了外部 USB 或蓝牙键盘)

问题描述

谁能告诉我是否有任何方法可以找出蓝牙 QWERTY 键盘是否连接到 android 设备.

我尝试使用 getResources().getConfiguration.keyboard，但无论是否连接键盘，它总是给我相同的值.

谢谢

实现此目的的一种方法是将 android:configChanges="keyboard" 添加到 AndroidManifest.xml 文件中的活动中.p>

有了这个，你可以覆盖 onConfigurationChanged 每当插入或拔出键盘时都会调用它

 @Override公共无效 onConfigurationChanged(配置新配置){如果(newConfig.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO){//正在连接一个硬件键盘}否则如果(newConfig.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES)//一个硬件键盘正在断开连接}}

Can anyone please tell me if there is any way we can find out if a bluetooth QWERTY keyboard is attached to android device.

I tried working with getResources().getConfiguration.keyboard, but it always gives me the same value whether key board is attached or not.

Thanks

One way to do this is adding android:configChanges="keyboard" to the activity in your AndroidManifest.xml file.

With this you can override onConfigurationChanged which will be called whenever a keyboard is plugged in or plugged out

 @Override
 public void onConfigurationChanged(Configuration newConfig) 
 {
   if(newConfig.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO) {
        //A hardware keyboard is being connected
   }  
   else if(newConfig.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES)
       //A hardware keyboard is being disconnected
   }

 }

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