gistfile1.java

public class AlphaImageView extends ImageView {
    private static final int FADE_IN_TIME_MS = 10000;
    public AlphaImageView(Context context) {
        super(context);
    }

    public AlphaImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public AlphaImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public void setImageBitmap(Bitmap bm) {
        AlphaAnimation fadeIn = new AlphaAnimation(0, 1);
        fadeIn.setDuration(FADE_IN_TIME_MS);
        fadeIn.setInterpolator(new LinearInterpolator());
        super.setImageBitmap(bm);
        startAnimation(fadeIn);
    }
}