Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.graphics.Bitmap;

import android.graphics.Matrix;

import android.media.ExifInterface;
import android.util.Log;

public class Main {
    public static Bitmap rotateImage(Bitmap bitmap, float degrees) {
        Bitmap resultBitmap = bitmap;
        try {
            Matrix matrix = new Matrix();
            matrix.postRotate(degrees);
            // Rotate the bitmap
            resultBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        if (resultBitmap != bitmap) {
            bitmap.recycle();
        }
        return resultBitmap;
    }

    public static Bitmap rotateImage(Bitmap bitmap, String storagePath) {
        Bitmap resultBitmap = bitmap;
        try {
            ExifInterface exifInterface = new ExifInterface(storagePath);
            int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);

            Matrix matrix = new Matrix();

            // 1: nothing to do

            // 2
            if (orientation == ExifInterface.ORIENTATION_FLIP_HORIZONTAL) {
                matrix.postScale(-1.0f, 1.0f);
            }
            // 3
            else if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
                matrix.postRotate(180);
            }
            // 4
            else if (orientation == ExifInterface.ORIENTATION_FLIP_VERTICAL) {
                matrix.postScale(1.0f, -1.0f);
            }
            // 5
            else if (orientation == ExifInterface.ORIENTATION_TRANSPOSE) {
                matrix.postRotate(-90);
                matrix.postScale(1.0f, -1.0f);
            }
            // 6
            else if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
                matrix.postRotate(90);
            }
            // 7
            else if (orientation == ExifInterface.ORIENTATION_TRANSVERSE) {
                matrix.postRotate(90);
                matrix.postScale(1.0f, -1.0f);
            }
            // 8
            else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
                matrix.postRotate(270);
            }

            // Rotate the bitmap
            resultBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
            if (resultBitmap != bitmap) {
                bitmap.recycle();
            }
        } catch (Exception exception) {
            Log.e("BitmapUtil", "Could not rotate the image: " + storagePath);
        }
        return resultBitmap;
    }
}