decode Bitmap From Resource And Crop It - Android Graphics

Android examples for Graphics:Bitmap Crop

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Description

decode Bitmap From Resource And Crop It

Demo Code


//package com.java2s;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class Main {
    public static Bitmap decodeBitmapFromResourceAndCropIt(Resources res,
            int resId, int reqWidth, int reqHeight, int x, int y) {
        Bitmap bmp = decodeBitmapFromResource(res, resId, reqWidth,
                reqHeight);//from   w  w  w. j a v  a  2s. co m
        return Bitmap.createBitmap(bmp, x, y, bmp.getWidth(),
                bmp.getHeight() - y);
    }

    public static Bitmap decodeBitmapFromResource(Resources res, int resId,
            int reqWidth, int reqHeight) {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        options.inSampleSize = calculateSize(options, reqWidth, reqHeight);

        options.inJustDecodeBounds = false;

        return BitmapFactory.decodeResource(res, resId, options);
    }

    public static int calculateSize(BitmapFactory.Options options,
            int reqWidth, int reqHeight) {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {
            if (width > height) {
                inSampleSize = Math.round((float) height
                        / (float) reqHeight);
            } else {
                inSampleSize = Math.round((float) width / (float) reqWidth);
            }
        }
        return inSampleSize;
    }
}

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