Question

我正在撰写一份安文斯文科文版申请书。问题是,我没有从我的Log.d()中获取广播接收器的收受方法的产出,这意味着我的申请没有妥善处理广播。

我已读到无数问题,即如何在被点击的“行动”上制定守则。在我不工作时,我甚至复制了+过去版的代码,只是看它是否会发挥作用。

行动: 我想处理的是耳机上的single,使用户能够收听/终端电话、游戏/乐。 代替我处理这一纽顿语的申请,当我点击时,我的Nexus S Anders音乐家开始玩一个歌曲。

我没有把我的法典放在另一个类别中,这可能是为什么它不工作?

这里的法典载于“Create()”方法上(在我撰写的《守则》之后,我在网站上抄录了该具体准则):

IntentFilter mediaButtonFilter = new IntentFilter(
            Intent.ACTION_MEDIA_BUTTON);
    mediaButtonFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
    BroadcastReceiver brMediaButton = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            Log.d("Event", "Media button!");
            this.abortBroadcast();

            KeyEvent key = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
            if(key.getAction() == KeyEvent.ACTION_UP) {
                int keycode = key.getKeyCode();
                if(keycode == KeyEvent.KEYCODE_MEDIA_NEXT) {
                    Log.d("TestApp", "Next Pressed");
                } else if(keycode == KeyEvent.KEYCODE_MEDIA_PREVIOUS) {
                    Log.d("TestApp", "Previous pressed");
                } else if(keycode == KeyEvent.KEYCODE_HEADSETHOOK) {
                    Log.d("TestApp", "Head Set Hook pressed");
                }
            }

        }
    };
    registerReceiver(brMediaButton, mediaButtonFilter);

All I really need to test for is the KEYCODE_HEADSETHOOK but it doesn t hurt to have the other code there for testing, I ll fix it up once I can get everything working correctly.

在我的发言中:

<intent-filter android:priority="2147483647" >
            <action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>

我最初认为,这可能是一个许可问题,因为我没有具体说明对此的任何许可,但我没有收到任何错误的信息。

同我先前说过的那样,我尝试了这方面的许多变化。其中一个例子就是在以下链接中使用该守则:。 - 《关于接收问题的行动》——MEDIA_BUTTON Anders/a>和《共同战争》的更正。然而,我再次修改了它,这样,它就属于一个充裕的阶层。

事先感谢你的帮助。

Answer 1

我在三星银河S5号上测试了这一试验,并测试了4.4.2。因此,其他职位没有提及哪些重要和哪些内容?

Register the receiver in the AndroidManifest.xml inside the application tag but outside from every activity tag.
Your receiver Broadcastreceiver need to be public and static
One activity need to register an MediaButtonEventReceiver to listen for the button presses

Okay and here some example Code:

mAudioManager =  (AudioManager) getSystemService(Context.AUDIO_SERVICE);
mReceiverComponent = new ComponentName(this,YourBroadcastReceiver.class);
...
mAudioManager.registerMediaButtonEventReceiver(mReceiverComponent);
...
// somewhere else
mAudioManager.unregisterMediaButtonEventReceiver(mReceiverComponent);

www.un.org/Depts/DGACM/index_french.htm

public static class YourBroadcastReceiver extends BroadcastReceiver{

    // Constructor is mandatory
    public MediaBroadcastReceiver ()
    {
        super ();
    }
    @Override
    public void onReceive(Context context, Intent intent) {
        String intentAction = intent.getAction();
        Log.i (TAG_MEDIA, intentAction.toString() + " happended");
        if (!Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
            Log.i (TAG_MEDIA, "no media button information");
            return;
        }
        KeyEvent event = (KeyEvent)intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
        if (event == null) {
            Log.i (TAG_MEDIA, "no keypress");
            return;
        }
        // other stuff you want to do
    }
}

这里还有<>万能>。如果需要增加意向书的优先顺序,但我不需要:

<application>
    <receiver android:name="OuterClass$YourBroadcastReceiver">
        <intent-filter>
           <action android:name="android.intent.action.MEDIA_BUTTON" />
         </intent-filter>
    </receiver>
    <activity> ... </activity>
</application>

参考文献:

Answer 2

mediaButtonReceiver = new ComponentName(getPackageName(), MediaButtonReceiver.class.getName());

mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);

mAudioManager.registerMediaButtonEventReceiver(mediaButtonReceiver);

该法典将约束你的耳光和你的 app子,直到你要求:

mAudioManager.unregisterMediaButtonEventReceiver(mediaButtonReceiver);

Answer 3

您可以避免使用Blacastreceiver for Anders >5.0(API, 21 LOLLIPOP)使用下文所述媒体:。

友情链接