Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2013 Vishwa Patel
 *
 * 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 in the 'assets' directory of this 
 * application or 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 java.io.IOException;

import android.content.Context;

import android.database.Cursor;

import android.graphics.Matrix;
import android.media.ExifInterface;

import android.net.Uri;
import android.provider.MediaStore;

public class Main {
    public static Matrix getRotationMatrixForImage(Context ctx, Uri contentUri) {

        String pathToImage = getAbsolutePathFromUri(ctx, contentUri);
        ExifInterface exif;
        try {
            exif = new ExifInterface(pathToImage);
            int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
            Matrix matrix = new Matrix();
            if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
                matrix.postRotate(90);
            } else if (orientation == ExifInterface.ORIENTATION_ROTATE_180) {
                matrix.postRotate(180);
            } else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
                matrix.postRotate(270);
            }
            return matrix;
        } catch (IOException e) {
            return new Matrix();
        }
    }

    public static String getAbsolutePathFromUri(Context ctx, Uri contentUri) {
        String[] proj = { MediaStore.Video.Media.DATA };
        Cursor cursor = ctx.getContentResolver().query(contentUri, proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }
}