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androidlistviewlazy-loading

about Android LazyAdapter....Loading Image in ListView

I used Lazy Loader to load image in my listView

and the image is from site

I parse the image's url to a String array

and set LazyAdapter like this

adapter=new LazyAdapter(this, aStrArray);
           list.setAdapter(adapter);

I'm sure about the aStrArray is not the problem.

(I had Logged it before)

But the ListView just Load the first one Image...

why is that?

Here's my code

public class BBtest08Activity extends Activity {
/** Called when the activity is first created. */
ListView list;
LazyAdapter adapter;
String aStr;
String aStrArray[];
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    list=(ListView)findViewById(R.id.list);
    try {
        executeHttpGet();
    } catch (Exception e) {
        Log.i("bird","parser failed");
        e.printStackTrace();
    }
    Button b=(Button)findViewById(R.id.button1);
    b.setOnClickListener(listener);
}
@Override
public void onDestroy()
{
    list.setAdapter(null);
    super.onDestroy();
}

public OnClickListener listener=new OnClickListener(){
    @Override
    public void onClick(View arg0) {
        adapter.imageLoader.clearCache();
        adapter.notifyDataSetChanged();
    }
};
public void executeHttpGet() throws Exception {
    try {
    HttpClient client = new DefaultHttpClient();
    HttpGet request = new HttpGet("http://test.mobibon.com.tw/MovieGoTest/GetMovies.js");
    HttpResponse response = client.execute(request); 
     String retSrc = EntityUtils.toString(response.getEntity(),"utf-8");
     retSrc = retSrc.substring(1);//there a space in the very first
       JSONObject obj = new JSONObject(retSrc);
       JSONArray movieArray = obj.getJSONArray("movies");
       for(int i = 0;i < movieArray.length(); i++)
       {
       JSONObject movie_data = movieArray.getJSONObject(i);
       aStr = aStr+movie_data.getString("imageUrl")+",";
       aStrArray = aStr.split(",");
       }
       } finally {
           adapter=new LazyAdapter(this, aStrArray);
           list.setAdapter(adapter);
       }
       }
}

The Lazy Loader from author is like this---

public class MainActivity extends Activity {

ListView list;
LazyAdapter adapter;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    list=(ListView)findViewById(R.id.list);
    adapter=new LazyAdapter(this, mStrings);
    list.setAdapter(adapter);
    
    Button b=(Button)findViewById(R.id.button1);
    b.setOnClickListener(listener);
}

@Override
public void onDestroy()
{
    list.setAdapter(null);
    super.onDestroy();
}

public OnClickListener listener=new OnClickListener(){
    @Override
    public void onClick(View arg0) {
        adapter.imageLoader.clearCache();
        adapter.notifyDataSetChanged();
    }
};

private String[] mStrings={
        "http://test.mobibon.com.tw/MovieGoTest/Pics/pl_fmen7122923814_s.jpg",
        "http://test.mobibon.com.tw/MovieGoTest/Pics/pl_fmen7122923814_s.jpg",
        "http://a3.twimg.com/profile_images/121630227/Droid_normal.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf_normal.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook.png",
        "http://a3.twimg.com/profile_images/768060227/ap4u_normal.jpg",
        "http://a1.twimg.com/profile_images/74724754/android_logo_normal.png",
        "http://a3.twimg.com/profile_images/681537837/SmallAvatarx150_normal.png",
        "http://a1.twimg.com/profile_images/63737974/2008-11-06_1637_normal.png",
        "http://a3.twimg.com/profile_images/548410609/icon_8_73.png",
        "http://a1.twimg.com/profile_images/612232882/nexusoneavatar_normal.jpg",
        "http://a1.twimg.com/profile_images/213722080/Bugdroid-phone_normal.png",
        "http://a1.twimg.com/profile_images/645523828/OT_icon_090918_android_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf_normal.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet.png",
        "http://a3.twimg.com/profile_images/670625317/aam-logo-v3-twitter_normal.png",
        "http://a3.twimg.com/profile_images/740897825/AndroidCast-350_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid_normal.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf_normal.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/768060227/ap4u_normal.jpg",
        "http://a1.twimg.com/profile_images/74724754/android_logo.png",
        "http://a3.twimg.com/profile_images/681537837/SmallAvatarx150_normal.png",
        "http://a1.twimg.com/profile_images/63737974/2008-11-06_1637_normal.png",
        "http://a3.twimg.com/profile_images/548410609/icon_8_73_normal.png",
        "http://a1.twimg.com/profile_images/612232882/nexusoneavatar_normal.jpg",
        "http://a1.twimg.com/profile_images/213722080/Bugdroid-phone_normal.png",
        "http://a1.twimg.com/profile_images/645523828/OT_icon_090918_android.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small_normal.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a3.twimg.com/profile_images/64827025/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png",
        "http://a1.twimg.com/profile_images/850960042/elandroidelibre-logo_300x300_normal.jpg",
        "http://a1.twimg.com/profile_images/655119538/andbook_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/121630227/Droid_normal.jpg",
        "http://a1.twimg.com/profile_images/957149154/twitterhalf.jpg",
        "http://a1.twimg.com/profile_images/97470808/icon_normal.png",
        "http://a3.twimg.com/profile_images/511790713/AG_normal.png",
        "http://a3.twimg.com/profile_images/956404323/androinica-avatar_normal.png",
        "http://a1.twimg.com/profile_images/909231146/Android_Biz_Man_normal.png",
        "http://a3.twimg.com/profile_images/72774055/AndroidHomme-LOGO_normal.jpg",
        "http://a1.twimg.com/profile_images/349012784/android_logo_small.jpg",
        "http://a1.twimg.com/profile_images/841338368/ea-twitter-icon_normal.png",
        "http://a3.twimg.com/profile_images/64827024/android-wallpaper6_2560x160_normal.png",
        "http://a3.twimg.com/profile_images/77641093/AndroidPlanet_normal.png"
};
}
Solution

  • What is more important is the getView function inside the LazyAdapter, you should log inside the getView function to see what url is actually set by the imageView.

    Also, why are you splitting aStr every loop? You should just append new URL to aStr inside the loop and split it into array after the for loop.