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Custom rating graphs do not scale

I created a custom rating panel, as explained by kozyr , and it works fine when I have my rating scale installed with the exact dimensions, my full and empty pictures (40dp x40dp), but when I try to set the size to something smaller, the images don't scale, they are just cropped.

Can I scale my rating scale without scaling my actual assets?

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1 answer

I had the same problem as you, since I want my application to run at different screen resolutions, I want the rating panel to automatically scale according to my needs.

"MyRatingBar", , , :

  • , ""
  • , "unChecked"
  • , ,

  • , ,

    public class MyRatingBar extends RelativeLayout implements OnClickListener {

private int bitmapChecked;
private int bitmapUnChecked;
private byte rating;

public MyRatingBar(Context context, int bitmapChecked, int bitmapUnChecked, int numSelectors, int ratingBarWidth, int ratingBarHeight) {
super(context);
this.bitmapChecked = bitmapChecked;
this.bitmapUnChecked = bitmapUnChecked;

int selectorWidth = ratingBarWidth / numSelectors;
this.rating = -1;

for (byte i = 0; i < numSelectors; i++) {
    ImageView newSelector = new ImageView(context);
    newSelector.setImageResource(bitmapUnChecked);
    this.addView(newSelector);
    newSelector.setLayoutParams(new RelativeLayout.LayoutParams(selectorWidth, ratingBarHeight));
    ((RelativeLayout.LayoutParams) newSelector.getLayoutParams()).setMargins(selectorWidth * i, 0, 0, 0);
    newSelector.setOnClickListener(this);
}
}

public byte getRating() {
    return this.rating;
}

public void setRating(byte rating) {
this.rating = rating;
for (int currentChildIndex = 0; currentChildIndex < this.getChildCount(); currentChildIndex++) {
    ImageView currentChild = (ImageView) this.getChildAt(currentChildIndex);
    if (currentChildIndex < rating) {
        currentChild.setImageResource(this.bitmapChecked);
    }
    else {
        currentChild.setImageResource(this.bitmapUnChecked);
    }
}       
}

public void onClick(View clickedView) {
for (byte currentChildIndex = 0; currentChildIndex < this.getChildCount(); currentChildIndex++) {
    if (this.getChildAt(currentChildIndex).equals(clickedView)) {
        this.setRating((byte) (currentChildIndex + 1));
    }
}
}       
}
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