スクロールグリッドビューの前の画像が下の画像に置き換えられ、再度上にスクロールされた後、1つの問題があります。一度ロードしたいのですが、スクロール時に変更されることはありません。私のアプリのURLはhttps://play.google.com/store/ですアプリ/詳細?id=com.vaibhavtech.mbmovies
public class NewMovie extends Activity {
private GridView lv;
private Vibrator vibrator;
private ArrayList<DataDemo> mDemoDataAl;
private ProgressDialog progressDialog;
private String mStringURL = "";
private ImageLoader mImageLoader = null;
protected static final int SHOW_PROGRESS_DIALOG = 0;
protected static final int STOP_PROGRESS_DIALOG = 1;
protected static final int NETWORK_FAILURE = 2;
protected static final int PROBLEM_IN_CONNECTING_SERVER = 3;
protected static final int SET_ADAPTER = 4;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.new_movie);
setProgressBarIndeterminateVisibility(true);
setProgressBarIndeterminateVisibility(false);
super.onCreate(savedInstanceState);
mDemoDataAl = new ArrayList<DataDemo>();
mImageLoader = ImageLoader.getInstance();
vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
lv = (GridView) findViewById(R.id.grid_view);
mStringURL = "http://vaibhavtech.com/work/android/movie_list.php?category="
+ MainActivity.movie_Category + "&sub_category=new";
Log.d("The Url is ", " URL : " + mStringURL);
lv.setOnScrollListener(new EndlessScrollListener());
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// // TODO Auto-generated method stub
vibrator.vibrate(40);
MainActivity.movie_Id = ((TextView) arg1
.findViewById(R.id.tv_girdview_content_id)).getText()
.toString();
startActivity(new Intent(NewMovie.this, MovieDescription.class));
}
});
new GetDemoData().execute();
}
private class GetDemoData extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
try {
JSONObject json = JSONfunctions.getJSONfromURL(mStringURL,
NewMovie.this);
if (json != null) {
JSONArray MoviesArray = json.getJSONArray("Demo");
for (int i = 0; i < MoviesArray.length(); i++) {
DataDemo mDemoData = new DataDemo();
mDemoData.setmDemoId(MoviesArray.getJSONObject(i)
.getString("id"));
mDemoData.setmDemoTitle(MoviesArray.getJSONObject(i)
.getString("title"));
mDemoData.setmDemoYear(MoviesArray.getJSONObject(i)
.getString("year"));
mDemoData.setmDemoDuration(MoviesArray.getJSONObject(i)
.getString("duration"));
mDemoData.setmDemoPoster(MoviesArray.getJSONObject(i)
.getString("poster"));
mDemoDataAl.add(mDemoData);
}
} else {
mHandler.sendEmptyMessage(PROBLEM_IN_CONNECTING_SERVER);
}
} catch (Exception e) {
Log.d("Exceptions",
" The Xception messages are " + e.getMessage());
}
return null;
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
mHandler.sendEmptyMessage(SHOW_PROGRESS_DIALOG);
mDemoDataAl.clear();
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
mHandler.sendEmptyMessage(SET_ADAPTER);
mHandler.sendEmptyMessage(STOP_PROGRESS_DIALOG);
}
}
public class NewMoviesAdapter extends BaseAdapter {
private LayoutInflater mInflater = null;
public NewMoviesAdapter() {
mInflater = LayoutInflater.from(NewMovie.this);
}
public int getCount() {
return mDemoDataAl.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.grid_view_content,
null);
holder = new ViewHolder();
holder.txtMovieId = (TextView) convertView
.findViewById(R.id.tv_girdview_content_id);
holder.txtMovieDuration = (TextView) convertView
.findViewById(R.id.tv_girdview_content_listner);
holder.txtMovieName = (TextView) convertView
.findViewById(R.id.tv_girdview_content_name);
holder.txtMovieYear = (TextView) convertView
.findViewById(R.id.tv_girdview_content_like);
holder.imgMovie = (ImageView) convertView
.findViewById(R.id.iv_girdview_content_image);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
try {
holder.txtMovieId.setText(Utils
.asUpperCaseFirstChar(mDemoDataAl.get(position)
.getmDemoId()));
holder.txtMovieDuration.setText(mDemoDataAl.get(position)
.getmDemoDuration());
holder.txtMovieName.setText(Utils
.asUpperCaseFirstChar(mDemoDataAl.get(position)
.getmDemoTitle()));
holder.txtMovieYear.setText(mDemoDataAl.get(position)
.getmDemoYear());
mImageLoader.displayImage(
"http://vaibhavtech.com/work/android/admin/upload/"
+ mDemoDataAl.get(position).getmDemoPoster(),
holder.imgMovie);
} catch (Exception e) {
}
return convertView;
}
class ViewHolder {
public TextView txtMovieId;
public TextView txtMovieDuration;
public TextView txtMovieName;
public TextView txtMovieYear;
public ImageView imgMovie;
}
}
public class EndlessScrollListener implements OnScrollListener {
private int visibleThreshold = 5;
private int currentPage = 0;
private int previousTotal = 5;
private boolean loading = true;
public EndlessScrollListener() {
}
public EndlessScrollListener(int visibleThreshold) {
this.visibleThreshold = visibleThreshold;
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (loading) {
if (totalItemCount > previousTotal) {
loading = false;
previousTotal = totalItemCount;
currentPage++;
}
}
if (!loading
&& (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
// I load the next page of gigs using a background task,
// but you can call any function here.
// new do.execute(currentPage + 1);
loading = true;
}
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
}
Handler mHandler = new Handler() {
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case SHOW_PROGRESS_DIALOG:
if (progressDialog == null) {
progressDialog = Utils.createProgressDialog(NewMovie.this);
progressDialog.setMessage("Loding...");
progressDialog.show();
} else {
progressDialog.show();
}
mHandler.removeMessages(SHOW_PROGRESS_DIALOG);
break;
case STOP_PROGRESS_DIALOG:
progressDialog.dismiss();
mHandler.removeMessages(STOP_PROGRESS_DIALOG);
break;
case NETWORK_FAILURE:
Utils.displayToast(NewMovie.this,
Constant.NO_NETWORK_CONNECTION);
mHandler.removeMessages(NETWORK_FAILURE);
break;
case PROBLEM_IN_CONNECTING_SERVER:
Utils.displayToast(NewMovie.this,
Constant.PROBLEM_IN_CONNECTING_SERVER);
mHandler.removeMessages(PROBLEM_IN_CONNECTING_SERVER);
break;
case SET_ADAPTER:
lv.setAdapter(new NewMoviesAdapter());
mHandler.removeMessages(SET_ADAPTER);
break;
default:
break;
}
};
};
}
newmovie.xml* * ** * ** * ** * ** * ** * ** * ** * ***
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="10dp"
android:orientation="vertical" >
<GridView
android:id="@+id/grid_view"
android:layout_width="fill_parent"
android:layout_height="377dp"
android:horizontalSpacing="10dp"
android:numColumns="2"
android:verticalSpacing="10dp" >
</GridView>
</LinearLayout>
メインアクティビティ.java
public class MyApplication extends Application {
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(
getApplicationContext())
.threadPriority(Thread.NORM_PRIORITY - 2)
.denyCacheImageMultipleSizesInMemory()
.discCacheFileNameGenerator(new Md5FileNameGenerator())
.tasksProcessingOrder(QueueProcessingType.LIFO)
.writeDebugLogs() // Remove for release app
.build();
// Initialize ImageLoader with configuration.
ImageLoader.getInstance().init(config);
}