小编bl4*_*4d3的帖子

我需要从IP摄像头获取mjpeg流,任何人都知道正确的方法吗？我用Google搜索了一下,我找到了这个例子

http://www.anddev.org/mjpeg_on_android_anyone-t1871.html

但是当我试图从主要活动调用的另一个活动中获取流时,我一直被困住了.这里的代码:

主要活动

package com.test;


public class IntentTest extends Activity {
    /** Called when the activity is first created. */
    ListView myListView = null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        myListView = (ListView)findViewById(R.id.listView);
        final ArrayList<String> items = new ArrayList<String>();
        items.add("00408C944B9A");
        final ArrayAdapter<String> aa;
        aa = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1,
                items);

        myListView.setAdapter(aa);
        myListView.setOnItemClickListener(listClicked);

    }


    private OnItemClickListener listClicked = new OnItemClickListener() {
        public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) {
            // TODO Auto-generated method stub
            Intent i …

我以这种方式创建了一个接近警报

    private void setProximityAlert(float radius, double lat, double lng, String place)
{
    long expiration = -1;
    LocationManager locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    Intent intent = new Intent(TREASURE_PROXIMITY_ALERT);
    intent.putExtra("lat", lat);
    intent.putExtra("lng", lng);
    intent.putExtra("place", place);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), -1, intent, 0);   
    locManager.addProximityAlert(lat, lng, radius, expiration, pendingIntent);
}

在我的活动中,我以这种方式注册了接收器

    IntentFilter intentFilter = new IntentFilter(TREASURE_PROXIMITY_ALERT);
    registerReceiver(new ProximityIntentReceiver(), intentFilter);
    setProximityAlert(10, 45.150344, 9.999815, "POINT1");

我的广播接收器被正确调用.所以现在,我想添加另一个接近警报,是否可能？我希望2接近警报调用相同的boadcast接收器.我做的:

    IntentFilter intentFilter1 = new IntentFilter(TREASURE_PROXIMITY_ALERT1);
    registerReceiver(new ProximityIntentReceiver(), intentFilter1);        
    setProximityAlert(200f, 45.143848, 10.039741, "POINT2");

但它不起作用,没有任何反应.我现在真的很喜欢它,我想知道它是否正确.我的意图是触发2个警报,一个是GPS获取位置POINT1而另一个是POINT2位置.欢迎任何帮助.

我正在用org.json中的lib解析这个JSON字符串,我无法理解为什么我将下面的输出放到日志中.

ArrayList<String> al = new ArrayList<String>();
JSONObject demo = new JSONObject("{\"00408C88A2E6\":{\"id\":\"00408C88A2E6\",\"name\":\"Lab\"},\"00408C91188B\":{\"id\":\"00408C91188B\",\"name\":\"Lab1\"},\"00408C944B99\":{\"id\":\"00408C944B99\",\"name\":\"Lato1\"},\"00408C944BA0\":{\"id\":\"00408C944BA0\",\"name\":\"Lato\"}}");
Iterator<String> iterator =  demo.keys();
while (iterator.hasNext() ){    
  al.add((String)iterator.next());
  Log.i(LOG_TAG, "size al into while " + al.size());
  Log.i(LOG_TAG, "MAC " + iterator.next() + " for the user " + userId);
} 

记录输出

07-12 08:55:34.056: INFO/parse(285): size al into while 1
07-12 08:55:34.056: INFO/parse(285): MAC 00408C91188B for the user nweb
07-12 08:55:34.066: INFO/parse(285): size al into while 2
07-12 08:55:34.066: INFO/parse(285): MAC 00408C944B99 for the user nweb
07-12 08:55:34.066: INFO/parse(285): size …