SmartImageView

SmartImageView.java

/**
 * Created with Intellij with Android, BIZZBY product.
 * See licencing for usage of this code.
 * <p/>
 * User: chris
 * Date: 18/02/2013
 * Time: 10:43
 */
public class UriImageView extends ImageView
{
    /**
     * Set this after the measure pass to what ever you want, if true the ImageView will not requestLayout
     * after setting an image, nice optimization for fixed image sizes
     */
    protected boolean mIsFixedSize = false;
    private boolean mBlockLayout = false;

    public UriImageView(final Context context)
    {
        this(context, null);
    }

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

    public UriImageView(final Context context, final AttributeSet attrs, final int defStyle)
    {
        this(context, attrs);
    }

    @Override
    public void requestLayout()
    {
        if (!mBlockLayout)
            super.requestLayout();
    }

    @Override
    protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec)
    {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        // If we define the size then
        if (MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.EXACTLY && MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.EXACTLY)
            mIsFixedSize = true;
    }


    @Override
    public void setImageResource(final int resId)
    {
        blockLayoutIfPossible();
        super.setImageResource(resId);
        mBlockLayout = false;
    }

    @Override
    public void setImageURI(final Uri uri)
    {
        blockLayoutIfPossible();
        super.setImageURI(uri);
        mBlockLayout = false;
    }

    /**
     * Set Image Drawable is called by setImageBitmap so you don't need to override setImageBitmap
     *
     * @param drawable
     */
    @Override
    public void setImageDrawable(final Drawable drawable)
    {
        blockLayoutIfPossible();
        super.setImageDrawable(drawable);
        mBlockLayout = false;
    }

    protected final void blockLayoutIfPossible()
    {
        if (mBlockLayout)
        {
            mBlockLayout = true;
        }
    }

}