我有一个BrodcastReciever带耳机插头事件和蓝牙连接。这很有效，但问题是当我连接时，例如，SmartWatch类似于我连接蓝牙耳机或条形音箱。我有什么办法来过滤可以播放其他音乐的媒体设备？
BrodcastReciever
sources := $(wildcard src/*.c)
objects := $(sources:src/%.c=obj/%.o)
deps := $(objects:.o=.d)
CPPFLAGS := -MMD -MP
CFLAGS := -g -Wall -pedantic
LDLIBS := -lm
jogo.exe: $(objects)
$(LINK.o) $^ $(LDLIBS) -o $@
obj/%.o: src/%.c
$(COMPILE.c) $(OUTPUT_OPTION) $<
clean:
-del $(subst /,\,$(objects) $(deps)) jogo.exe
-include $(deps)
MainActivity
@Override
public void onReceive(final Context context, Intent intent) {
String action = intent.getAction();
if (Intent.ACTION_MEDIA_BUTTON.equals(action)) {
if (Settings.PROCESS_PRESSING){
KeyEvent event = intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (isAvailable) {
if (mTimer != null) mTimer.cancel();
if (myTimer != null) myTimer.cancel();
mTimer = new Timer();
myTimer = new MyTimerTask();
if (KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE == event.getKeyCode()) {
listener.playButtonPressed();
} else if (KeyEvent.KEYCODE_MEDIA_PLAY == event.getKeyCode()) {
listener.playButtonPressed();
} else if (KeyEvent.KEYCODE_MEDIA_PAUSE == event.getKeyCode()) {
listener.playButtonPressed();
} else if (KeyEvent.KEYCODE_MEDIA_STOP == event.getKeyCode()) {
listener.playButtonPressed();
} else if (KeyEvent.KEYCODE_MEDIA_NEXT == event.getKeyCode()) {
listener.nextTrackButtonPressed();
} else if (KeyEvent.KEYCODE_MEDIA_PREVIOUS == event.getKeyCode()) {
listener.previousTrackButtonPressed();
}
isAvailable = false;
mTimer.schedule(myTimer, 500);
}
}
} else if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
int state = intent.getIntExtra("state", -1);
switch (state) {
case 0:
break;
case 1:
if (Settings.START_HEADSET) listener.headsetPlugged();
break;
}
}
else if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)) {
if (Settings.START_BLUETOOTH)
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(6000);
Handler mainHandler = new Handler(context.getMainLooper());
Runnable myRunnable = new Runnable() {
@Override
public void run() {
listener.headsetPlugged();
}
};
mainHandler.post(myRunnable);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}).start();
}
else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {}
}
答案 0 :(得分：1)
接收BluetoothA2dp.STATE_CONNECTED意图然后处理
BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context ctx, Intent intent) {
String action = intent.getAction();
Log.d(TAG, "receive intent for action : " + action);
if (action.equals(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED)) {
int state = intent.getIntExtra(BluetoothA2dp.EXTRA_STATE, BluetoothA2dp.STATE_DISCONNECTED);
if (state == BluetoothA2dp.STATE_CONNECTED) {
setIsA2dpReady(true);
playMusic();
} else if (state == BluetoothA2dp.STATE_DISCONNECTED) {
setIsA2dpReady(false);
}
} else if (action.equals(BluetoothA2dp.ACTION_PLAYING_STATE_CHANGED)) {
int state = intent.getIntExtra(BluetoothA2dp.EXTRA_STATE, BluetoothA2dp.STATE_NOT_PLAYING);
if (state == BluetoothA2dp.STATE_PLAYING) {
Log.d(TAG, "A2DP start playing");
Toast.makeText(A2DPActivity.this, "A2dp is playing", Toast.LENGTH_SHORT).show();
} else {
Log.d(TAG, "A2DP stop playing");
Toast.makeText(A2DPActivity.this, "A2dp is stopped", Toast.LENGTH_SHORT).show();
}
}
}
};
答案 1 :(得分：0)
使用MediaRouter库查找设备连接和设备类型
MediaRouter mediaRouter = MediaRouter.getInstance(WEYVCoreUtils.getApplicationContext());
MediaRouteSelector mediaRouteSelector = new MediaRouteSelector.Builder().addControlCategory(MediaControlIntent.CATEGORY_LIVE_AUDIO).build()
mediaRouter.addCallback(mediaRouteSelector, new MediaRouterCallback(), MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
public static class MediaRouterCallback extends MediaRouter.Callback {
/**
* Called when the supplied media route becomes selected as the active route.
*
* @param router The media router reporting the event.
* @param route The route that has been selected.
*/
public void onRouteSelected(MediaRouter router, RouteInfo route) {
}
/**
* Called when the supplied media route becomes unselected as the active route.
* For detailed reason, override {@link #onRouteUnselected(MediaRouter, RouteInfo, int)}
* instead.
*
* @param router The media router reporting the event.
* @param route The route that has been unselected.
*/
public void onRouteUnselected(MediaRouter router, RouteInfo route) {
}
/**
* Called when the supplied media route becomes unselected as the active route.
* The default implementation calls {@link #onRouteUnselected}.
* <p>
* The reason provided will be one of the following:
* <ul>
* <li>{@link MediaRouter#UNSELECT_REASON_UNKNOWN}</li>
* <li>{@link MediaRouter#UNSELECT_REASON_DISCONNECTED}</li>
* <li>{@link MediaRouter#UNSELECT_REASON_STOPPED}</li>
* <li>{@link MediaRouter#UNSELECT_REASON_ROUTE_CHANGED}</li>
* </ul>
*
* @param router The media router reporting the event.
* @param route The route that has been unselected.
* @param reason The reason for unselecting the route.
*/
public void onRouteUnselected(MediaRouter router, RouteInfo route, int reason) {
onRouteUnselected(router, route);
}
/**
* Called when a media route has been added.
*
* @param router The media router reporting the event.
* @param route The route that has become available for use.
*/
public void onRouteAdded(MediaRouter router, RouteInfo route) {
}
/**
* Called when a media route has been removed.
*
* @param router The media router reporting the event.
* @param route The route that has been removed from availability.
*/
public void onRouteRemoved(MediaRouter router, RouteInfo route) {
}
/**
* Called when a property of the indicated media route has changed.
*
* @param router The media router reporting the event.
* @param route The route that was changed.
*/
public void onRouteChanged(MediaRouter router, RouteInfo route) {
}
/**
* Called when a media route's volume changes.
*
* @param router The media router reporting the event.
* @param route The route whose volume changed.
*/
public void onRouteVolumeChanged(MediaRouter router, RouteInfo route) {
}
/**
* Called when a media route's presentation display changes.
* <p>
* This method is called whenever the route's presentation display becomes
* available, is removed or has changes to some of its properties (such as its size).
* </p>
*
* @param router The media router reporting the event.
* @param route The route whose presentation display changed.
*
* @see RouteInfo#getPresentationDisplay()
*/
public void onRoutePresentationDisplayChanged(MediaRouter router, RouteInfo route) {
}
/**
* Called when a media route provider has been added.
*
* @param router The media router reporting the event.
* @param provider The provider that has become available for use.
*/
public void onProviderAdded(MediaRouter router, ProviderInfo provider) {
}
/**
* Called when a media route provider has been removed.
*
* @param router The media router reporting the event.
* @param provider The provider that has been removed from availability.
*/
public void onProviderRemoved(MediaRouter router, ProviderInfo provider) {
}
/**
* Called when a property of the indicated media route provider has changed.
*
* @param router The media router reporting the event.
* @param provider The provider that was changed.
*/
public void onProviderChanged(MediaRouter router, ProviderInfo provider) {
}
}
当附近有新设备可用时，将调用上述回调 MediaRouter.RouteInfo有足够的信息来查找它是什么类型的设备。