Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 *   Copyright (C)  2016 android@19code.com
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import android.graphics.Matrix;

import android.media.ExifInterface;

import java.io.IOException;

public class Main {
    public static Bitmap decodeScaleImage(String imagePath, int outWidth, int outHeight) {
        BitmapFactory.Options localOptions = new BitmapFactory.Options();
        localOptions.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(imagePath, localOptions);
        int i = calculateInSampleSize(localOptions, outWidth, outHeight);
        localOptions.inSampleSize = i;
        localOptions.inJustDecodeBounds = false;
        Bitmap localBitmap1 = BitmapFactory.decodeFile(imagePath, localOptions);
        int j = getPictureDegree(imagePath);
        Bitmap localBitmap2 = null;
        if ((localBitmap1 != null) && (j != 0)) {
            localBitmap2 = rotaingImageView(j, localBitmap1);
            localBitmap1.recycle();
            localBitmap1 = null;
            return localBitmap2;
        }
        return localBitmap1;
    }

    public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;
        if (height > reqHeight || width > reqWidth) {
            final int halfHeight = height / 2;
            final int halfWidth = width / 2;
            while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) {
                inSampleSize *= 2;
            }
        }
        return inSampleSize;
    }

    public static int getPictureDegree(String imagePath) {
        int i = 0;
        try {
            ExifInterface localExifInterface = new ExifInterface(imagePath);
            int j = localExifInterface.getAttributeInt("Orientation", 1);
            switch (j) {
            case 6:
                i = 90;
                break;
            case 3:
                i = 180;
                break;
            case 8:
                i = 270;
            case 4:
            case 5:
            case 7:
            default:
                break;
            }
        } catch (IOException localIOException) {
            localIOException.printStackTrace();
        }
        return i;
    }

    public static Bitmap rotaingImageView(int paramInt, Bitmap paramBitmap) {
        Matrix localMatrix = new Matrix();
        localMatrix.postRotate(paramInt);
        return Bitmap.createBitmap(paramBitmap, 0, 0, paramBitmap.getWidth(), paramBitmap.getHeight(), localMatrix,
                true);
    }
}