load Bitmap and scale - Android Graphics

Android examples for Graphics:Bitmap File

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Description

load Bitmap and scale

Demo Code


//package com.book2s;
import java.io.FileNotFoundException;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;

public class Main {
    public static Bitmap loadBitmap(Context context, Uri imageUri)
            throws FileNotFoundException {
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;/*  w w w  .jav a  2s.  c om*/
        BitmapFactory.decodeStream(context.getContentResolver()
                .openInputStream(imageUri), null, o);

        final int REQUIRED_SIZE = 140;

        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < REQUIRED_SIZE
                    || height_tmp / 2 < REQUIRED_SIZE) {
                break;
            }
            width_tmp /= 2;
            height_tmp /= 2;
            scale *= 2;
        }

        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(context.getContentResolver()
                .openInputStream(imageUri), null, o2);
    }
}

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