相关疑难解决方法(0)

我修改了Android和MJPEG的MJPEG查看器代码,使用AsyncTask工作(因此可以使用Ice Cream Sandwich(ICS),4.0.4),这是我的代码.

如果有人对如何优化,清理或使用代码做更合适的事情有任何建议,请告诉我.我很感激有两个问题有助于解决:

• 如果您有设备在流上,然后锁定屏幕并解锁屏幕,它不会恢复播放,直到您杀死并恢复应用程序或旋转屏幕.我尝试使用OnResume()执行某些操作或其他操作导致应用程序崩溃.

• 特别是我想在MjpegInputStream.java中获取AsyncTask但是无法使其工作.

MjpegActivity.java:

package com.demo.mjpeg;

import java.io.IOException;
import java.net.URI;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import com.demo.mjpeg.MjpegView.MjpegInputStream;
import com.demo.mjpeg.MjpegView.MjpegView;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;

public class MjpegActivity extends Activity {
    private static final String TAG = "MjpegActivity";

    private MjpegView mv;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //sample public cam
        String URL = "http://trackfield.webcam.oregonstate.edu/axis-cgi/mjpg/video.cgi?resolution=800x600&amp%3bdummy=1333689998337";

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

        mv = new MjpegView(this);
        setContentView(mv);        

        new DoRead().execute(URL); …

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 …