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  1. PO
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    <p>Here is complete domanstration of actvity with downloading and showing image on screen. </p> <p>Here is xml file for Activity.</p> <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;!-- Download Button --&gt; &lt;Button android:id="@+id/btnProgressBar" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Download File with Progress Bar" android:layout_marginTop="50dip"/&gt; &lt;!-- Image view to show image after downloading --&gt; &lt;ImageView android:id="@+id/my_image" android:layout_width="fill_parent" android:layout_height="wrap_content"/&gt; &lt;/LinearLayout&gt; </code></pre> <p>And here is Activity code.</p> <pre><code>import java.io.BufferedInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.net.URL; import java.net.URLConnection; import android.app.Activity; import android.app.Dialog; import android.app.ProgressDialog; import android.content.DialogInterface; import android.graphics.drawable.Drawable; import android.os.AsyncTask; import android.os.Bundle; import android.os.Environment; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.ImageView; public class AndroidDownloadFileByProgressBarActivity extends Activity { // button to show progress dialog Button btnShowProgress; // Progress Dialog private ProgressDialog pDialog; ImageView my_image; // Progress dialog type (0 - for Horizontal progress bar) public static final int progress_bar_type = 0; // File url to download private static String file_url = "http://api.androidhive.info/progressdialog/hive.jpg"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_android_download_file_by_progress_bar); // show progress bar button btnShowProgress = (Button) findViewById(R.id.btnProgressBar); // Image view to show image after downloading my_image = (ImageView) findViewById(R.id.my_image); /** * Show Progress bar click event * */ btnShowProgress.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // starting new Async Task new DownloadFileFromURL().execute(file_url); } }); } /** * Showing Dialog * */ @SuppressWarnings("deprecation") @Override protected Dialog onCreateDialog(int id) { switch (id) { case progress_bar_type: // we set this to 0 pDialog = new ProgressDialog(this); pDialog.setMessage("Downloading file. Please wait..."); pDialog.setIndeterminate(false); pDialog.setMax(100); pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); pDialog.setButton("Cancel", (DialogInterface.OnClickListener) null); pDialog.setCancelable(true); pDialog.show(); return pDialog; default: return null; } } /** * Background Async Task to download file * */ class DownloadFileFromURL extends AsyncTask&lt;String, String, String&gt; { /** * Before starting background thread Show Progress Bar Dialog * */ @Override protected void onPreExecute() { super.onPreExecute(); showDialog(progress_bar_type); } /** * Downloading file in background thread * */ @Override protected String doInBackground(String... f_url) { int count; try { URL url = new URL(f_url[0]); URLConnection conection = url.openConnection(); conection.connect(); // this will be useful so that you can show a tipical 0-100% progress // bar int lenghtOfFile = conection.getContentLength(); // download the file InputStream input = new BufferedInputStream(url.openStream(), 8192); // Output stream OutputStream output = new FileOutputStream("/sdcard/downloadedfile.jpg"); byte data[] = new byte[1024]; long total = 0; while ((count = input.read(data)) != -1) { total += count; // publishing the progress.... // After this onProgressUpdate will be called publishProgress("" + (int) ((total * 100) / lenghtOfFile)); // writing data to file output.write(data, 0, count); } // flushing output output.flush(); // closing streams output.close(); input.close(); } catch (Exception e) { Log.e("Error: ", e.getMessage()); } return null; } /** * Updating progress bar * */ protected void onProgressUpdate(String... progress) { // setting progress percentage pDialog.setProgress(Integer.parseInt(progress[0])); } /** * After completing background task Dismiss the progress dialog * **/ @Override protected void onPostExecute(String file_url) { // dismiss the dialog after the file was downloaded dismissDialog(progress_bar_type); // Displaying downloaded image into image view // Reading image path from sdcard String imagePath = Environment.getExternalStorageDirectory().toString() + "/downloadedfile.jpg"; // setting downloaded into image view my_image.setImageDrawable(Drawable.createFromPath(imagePath)); } } } </code></pre> <p>Just add this activity with following xml file.</p>
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    1. POAndroid show progress bar while image loading dynamically
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    1. USSwapnil Kotwal
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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