Android Open Source - tdpforce Dynamic Height Image View

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License

The source code is released under:

Apache License

Java Source Code

package com.etsy.android.grid.util;
/* w  w w .j a v  a 2s  . co  m*/
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * An {@link android.widget.ImageView} layout that maintains a consistent width to height aspect ratio.
 */
public class DynamicHeightImageView extends ImageView {

    private double mHeightRatio;

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

    public DynamicHeightImageView(Context context) {
        super(context);
    }

    public void setHeightRatio(double ratio) {
        if (ratio != mHeightRatio) {
            mHeightRatio = ratio;
            requestLayout();
        }
    }

    public double getHeightRatio() {
        return mHeightRatio;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (mHeightRatio > 0.0) {
            // set the image views size
            int width = MeasureSpec.getSize(widthMeasureSpec);
            int height = (int) (width * mHeightRatio);
            setMeasuredDimension(width, height);
        }
        else {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }
}

Java Source Code List

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