监听器使用服务而不活动的媒体按钮(耳机钩) [英] Listener for media button (headset-hook) using service without Activity
问题描述
我怎样才能使服务能聆听到Android设备上的媒体按钮(耳机挂机)。
我尝试这样做,使用这个code,但没有奏效。
你能帮助我。
How can I make service listen for media button (headset-hook) in android device . I try to do that using this code but did not work. Can you help me.
服务code:
public class RLservice extends IntentService {
private Handler handler;
public RLservice() {
super("my service");
// TODO Auto-generated constructor stub
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
handler = new Handler();
return super.onStartCommand(intent, flags, startId);
}
@Override
protected void onHandleIntent(Intent arg0) {
String intentAction = arg0.getAction();
if (Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
KeyEvent event = (KeyEvent) arg0
.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (event == null) {
return;
}
int keycode = event.getKeyCode();
int action = event.getAction();
long eventtime = event.getEventTime();
if (keycode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
|| keycode == KeyEvent.KEYCODE_HEADSETHOOK) {
if (action == KeyEvent.ACTION_DOWN) {
// Start your app here!
handler.post(new Runnable() {
public void run() {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "Welcome",
Toast.LENGTH_LONG).show();
}
});
}
}
}
}
}
这是reciver code:
This is reciver code:
public class RLreciver extends BroadcastReceiver
{
@Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
Intent i=new Intent(RLservice.class.getName());
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
arg0.startService(i);
}
}
这是明显的:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ypu.RLservice"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<receiver android:name=".RLreciver" >
<intent-filter android:priority="100000" >
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
</receiver>
<service
android:name=".RLservice"
android:process=":remote" >
<intent-filter>
<action android:name="com.ypu.RLservice.RLservice" />
</intent-filter>
</service>
</application>
</manifest>
感谢您提前。
推荐答案
您服务,期待一个意图
与 ACTION_MEDIA_BUTTON
意图
的行动。您正在使用不启动该服务这样的意图
。
Your service is expecting an Intent
with the ACTION_MEDIA_BUTTON
Intent
action. You are not starting the service using such an Intent
.
修改
Intent i=new Intent(RLservice.class.getName());
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
arg0.startService(i);
到
arg1.setClass(this, RLservice.class);
arg0.startService(arg1);
这将有效地重定向播出为您服务的命令,用行动和额外完好无损。
This will effectively "redirect" the broadcast as a command to your service, with the action and extras intact.
还有:
-
摆脱
的android:过程=:远程
,因为它是没有必要在这里,是用户敌对
Get rid of
android:process=":remote"
, as it is not necessary here and is user-hostile
摆脱你的&LT;意向滤光器&gt;
在&LT;服务&GT;
,除非你打算为一百万其他应用程序来调用这个服务
Get rid of your <intent-filter>
in your <service>
, unless you intend for a million other apps to be calling this service
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