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標題: 偵測耳機孔是否有無插入耳機 ... [打印本頁]

作者: judon 時間: 2012-5-11 13:45
標題: 偵測耳機孔是否有無插入耳機 ...
要注意的是 BroadcastReceiver 使用靜態註冊在 AndroidManifest.xml 可能會無效,
所以要像以下程式使用動態寫入註冊才可以,離開APP時,要註銷廣播程式...

HeadSetActivity.java 內容 (主畫面 Java檔)

import android.app.Activity;
import android.content.IntentFilter;
import android.os.Bundle;

public class HeadSetActivity extends Activity {
HeadsetPlugReceiver headsetPlugReceiver;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      registerHeadsetPlugReceiver();
}
private void registerHeadsetPlugReceiver(){
      headsetPlugReceiver  = new HeadsetPlugReceiver ();
      IntentFilter  filter = new IntentFilter();
      filter.addAction("android.intent.action.HEADSET_PLUG");
      registerReceiver(headsetPlugReceiver, filter);
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
unregisterReceiver();
}
private void unregisterReceiver(){
this.unregisterReceiver(headsetPlugReceiver);
}
}

HeadsetPlugReceiver.java 內容
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class HeadsetPlugReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
      // TODO Auto-generated method stub

         if(intent.hasExtra("state")){
            if(intent.getIntExtra("state", 0)==0){
                  Toast.makeText(context, "headset not connected", Toast.LENGTH_LONG).show();
            }
            else if(intent.getIntExtra("state", 0)==1){
                  Toast.makeText(context, "headset  connected", Toast.LENGTH_LONG).show();
            }
         }
}

}

作者: kevin7799 時間: 2013-9-4 10:58
謝謝大大辛苦努力的分享

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