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Code Issues Releases Wiki Activity

Add (almost) everything for the ImageViewer activity

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Still needs gesture recognition
This commit is contained in:
DjBushido
2014-03-24 14:41:32 -04:00
parent 00f1f80d1a
commit 8a1acefb21
3 changed files with 70 additions and 23 deletions
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41
HW4/src/com/example/hw4/ImageViewerActivity.java
View File

@ -1,17 +1,24 @@
package com.example.hw4;
import java.net.URL;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.Menu;
import android.view.View;
import android.widget.ImageView;
public class ImageViewerActivity extends Activity {
int urlsId;
String[] urls;
int currentIndex;
ProgressDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
@ -22,6 +29,8 @@ public class ImageViewerActivity extends Activity {
urlsId = extras.getInt("urls");
urls = getResources().getStringArray(urlsId);
currentIndex = extras.getInt("index");
displayImage(currentIndex);
}
@Override
@ -44,30 +53,50 @@ public class ImageViewerActivity extends Activity {
}
private void displayPrev() {
currentIndex -= 1;
// Wrapping backwards requires more than just modulo
if (currentIndex == 0)
currentIndex = urls.length - 1;
else
currentIndex -= 1;
displayImage(currentIndex);
}
private void displayNext() {
currentIndex += 1;
currentIndex = (currentIndex + 1) % urls.length;
displayImage(currentIndex);
}
public void displayImage(int indexToDisplay) {
ImageView view = (ImageView)findViewById(R.id.imgViewer);
view.setImageBitmap(null);
new ImageDownloader().execute(urls[indexToDisplay]);
dialog = new ProgressDialog(this);
dialog.setCancelable(false);
dialog.show();
}
private class ImageDownloader extends AsyncTask<String, Void, Bitmap> {
@Override
protected Bitmap doInBackground(String... params) {
try
{
URL imageUrl = new URL(params[0]);
return BitmapFactory.decodeStream(imageUrl.openStream());
}
catch(Exception e)
{
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Bitmap result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
dialog.cancel();
ImageView view = (ImageView)findViewById(R.id.imgViewer);
view.setImageBitmap(result);
}
}