I am using ViewPager in my app and all the images are coming from server. All thing works fine, but Images are taking so much time to display on screen, can any one tell what is issue, following is my snippet code. Or is there any efficient way to load images?
public class FullImage extends Activity{
private String strtd;
String[] imgStr;
ImageView imageView;
ArrayList<String> userImgArrayList;
String[] myURLs;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image_view);
//strtd = getIntent().getStringExtra("profile_pic");
userImgArrayList = getIntent().getStringArrayListExtra("user_images");
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
ImageAdapter adapter = new ImageAdapter(this);
viewPager.setAdapter(adapter);
imageView = (ImageView) findViewById(R.id.full_image_view);
}
public Bitmap getResizedBitmap(Bitmap image, int bitmapWidth,
int bitmapHeight) {
return Bitmap.createScaledBitmap(image, bitmapWidth, bitmapHeight,
true);
}
public Bitmap getResizedBitmap(Bitmap image, int maxSize) {
int width = image.getWidth();
int height = image.getHeight();
float bitmapRatio = (float)width / (float) height;
if (bitmapRatio > 0) {
width = maxSize;
height = (int) (width / bitmapRatio);
} else {
height = maxSize;
width = (int) (height * bitmapRatio);
}
return Bitmap.createScaledBitmap(image, width, height, true);
}
public class ImageAdapter extends PagerAdapter {
Context context;
ImageAdapter(Context context)
{
this.context=context;
}
@Override
public int getCount() {
return userImgArrayList.size();
}
@Override
public void destroyItem(View container, int position, Object object) {
((ViewPager) container).removeView((View) object);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((ImageView) object);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
ImageView imageView = new ImageView(context);
int padding = context.getResources().getDimensionPixelSize(
R.dimen.activity_horizontal_margin);
imageView.setPadding(padding, padding, padding, padding);
//imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
Picasso.with(context).load(userImgArrayList.get(position)).into(imageView);
/*for(int i=0; i<myURLs.length;i++)
{
try {
url = new URL(myURLs[i]);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
imageView.setImageBitmap(bmp);
}
*/
// imageView.setImageURI(Uri.parse(imgStr[position]));
((ViewPager) container).addView(imageView, 0);
return imageView;
}
}
