我似乎找不到一种在android上知道耳机是否插入的方法。我找到了各种解决方案,但它们似乎总是返回false。唯一能正常工作的是BroadcastReceiver
,但这不是我需要的:
我只是需要这样的东西
if(headphones plugged in) {
}
有这样的函数吗?它需要一些特殊的权限吗?
您可以使用此代码检查耳机是否已插入
AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
audioManager.isWiredHeadsetOn();
(不要担心弃用,它仍然可以用于ONLY检查耳机是否插入。)
你需要<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
Android 2.0 +可用
audiomemanager . iswiredheadseton () is DEPRECATED。所以,你需要使用audiomemanager . getdevices()方法:
private boolean isHeadphonesPlugged(){
AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
AudioDeviceInfo[] audioDevices = audioManager.getDevices(AudioManager.GET_DEVICES_ALL);
for(AudioDeviceInfo deviceInfo : audioDevices){
if(deviceInfo.getType()==AudioDeviceInfo.TYPE_WIRED_HEADPHONES
|| deviceInfo.getType()==AudioDeviceInfo.TYPE_WIRED_HEADSET){
return true;
}
}
return false;
}
audioManager.isWiredHeadsetOn()
已被弃用,根据android.media.AudioManager
的以下代码
/**
* Checks whether a wired headset is connected or not.
* <p>This is not a valid indication that audio playback is
* actually over the wired headset as audio routing depends on other conditions.
*
* @return true if a wired headset is connected.
* false if otherwise
* @deprecated Use {@link AudioManager#getDevices(int)} instead to list available audio devices.
*/
public boolean isWiredHeadsetOn() {
if (AudioSystem.getDeviceConnectionState(DEVICE_OUT_WIRED_HEADSET,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE &&
AudioSystem.getDeviceConnectionState(DEVICE_OUT_WIRED_HEADPHONE,"")
== AudioSystem.DEVICE_STATE_UNAVAILABLE &&
AudioSystem.getDeviceConnectionState(DEVICE_OUT_USB_HEADSET, "")
== AudioSystem.DEVICE_STATE_UNAVAILABLE) {
return false;
} else {
return true;
}
}
所以我们需要使用AudioManager#getDevices
方法,就像下面的
private boolean isWiredHeadsetOn(){
AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
AudioDeviceInfo[] audioDevices = audioManager.getDevices(AudioManager.GET_DEVICES_ALL);
for(AudioDeviceInfo deviceInfo : audioDevices){
if(deviceInfo.getType()==AudioDeviceInfo.TYPE_WIRED_HEADPHONES
|| deviceInfo.getType()==AudioDeviceInfo.TYPE_WIRED_HEADSET){
return true;
}
}
return false;
}