Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.content.ContentResolver;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;

import java.io.InputStream;

public class Main {
    public static Bitmap getUriBitmap(Context context, Uri uri, int reqWidth, int reqHeight) {
        BitmapFactory.Options newOpts = new BitmapFactory.Options();
        newOpts.inJustDecodeBounds = true;
        Bitmap bitmap = decodeUriAsBitmap(context, uri, newOpts);
        newOpts.inJustDecodeBounds = false;
        newOpts.inSampleSize = calculateInSampleSize(newOpts, reqWidth, reqHeight);
        bitmap = decodeUriAsBitmap(context, uri, newOpts);
        return bitmap;
    }

    public static Bitmap decodeUriAsBitmap(Context context, Uri uri, BitmapFactory.Options options) {

        Bitmap result = null;

        if (uri != null) {
            ContentResolver cr = context.getContentResolver();
            InputStream inputStream = null;
            try {
                inputStream = cr.openInputStream(uri);
                result = BitmapFactory.decodeStream(inputStream, null, options);
                inputStream.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        return result;
    }

    /**
     * @param options
     * @param reqWidth
     * @param reqHeight
     * @return
     */
    public static int calculateInSampleSize(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;
    }
}