/
MainActivity.java
139 lines (114 loc) · 6.84 KB
/
MainActivity.java
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package com.geniuseoe2012.lazyloaderdemo;
import android.app.Activity;
import android.os.Bundle;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ListView;
/**
*
* @author geniuseoe2012
* more brilliant£¬please pay attention to my csdn blog --> http://blog.csdn.net/geniuseoe2012
* sina weibo account £ºandroid»ðÐÇÈË
* android develop group £º200102476
*/
import com.geniuseoe2012.lazyloaderdemo.cache.ImageLoader;
public class MainActivity extends Activity {
protected static final String TAG = "ListViewPerformaceActivity";
/** Called when the activity is first created. */
private ListView mListview;
private LoaderAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setupViews();
}
@Override
protected void onDestroy() {
ImageLoader imageLoader = adapter.getImageLoader();
if (imageLoader != null){
imageLoader.clearCache();
}
super.onDestroy();
}
private void setupViews() {
mListview = (ListView) findViewById(R.id.main_lv_list);
adapter = new LoaderAdapter(500, this, URLS);
mListview.setAdapter(adapter);
mListview.setOnScrollListener(mScrollListener);
}
OnScrollListener mScrollListener = new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
switch (scrollState) {
case OnScrollListener.SCROLL_STATE_FLING:
adapter.setFlagBusy(true);
break;
case OnScrollListener.SCROLL_STATE_IDLE:
adapter.setFlagBusy(false);
break;
case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
adapter.setFlagBusy(false);
break;
default:
break;
}
adapter.notifyDataSetChanged();
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
}
};
private static final String[] URLS = {
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"http://lh4.ggpht.com/_TQY-Nm7P7Jc/TBpi6rKfFII/AAAAAAAABbg/79FOc0Dbq0c/s144-c/david_lee_sakura.jpg",
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"http://lh3.ggpht.com/_syQa1hJRWGY/TBwkCHcq6aI/AAAAAAABBEg/R5KU1WWq59E/s144-c/Antelope.JPG",
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"http://lh6.ggpht.com/_iO97DXC99NY/TBwq3_kmp9I/AAAAAAABcz0/apq1ffo_MZo/s144-c/IMG_0682_cp.jpg",
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}