部分三星手机拍照偏转90度一行代码搞定

 

最近在使用拍照功能时，遇到三星手机拍照就会偏转90度，最后度娘一番，找到了解决方案。

下面就写下自已的解决方案。

ToolImage工具类。

package cn.xa.tjy.lib.utils;

import android.annotation.TargetApi;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Shader;
import android.graphics.SweepGradient;
import android.graphics.Typeface;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.media.ExifInterface;
import android.os.Build;
import android.os.Environment;
import android.support.annotation.FloatRange;
import android.support.annotation.IntRange;
import android.view.View;

import com.blankj.utilcode.util.FileIOUtils;
import com.blankj.utilcode.util.FileUtils;
import com.blankj.utilcode.util.ImageUtils;

import java.io.File;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

import cn.xa.tjy.lib.constant.ConString;

/**
 * action:图片相关工具类
 * Created by bsh_kt on 2017/6/20.
 * des:
 */

public class ToolImage {

   


    private static String getPath(String path) {
        return "_" + ToolTime.longTimeToStrYMDHMSPath(System.currentTimeMillis()) + ".jpeg";
    }

    /**
     * 旋转图片
     *
     * @param angle  被旋转角度
     * @param bitmap 图片对象
     * @return 旋转后的图片
     */
    public static Bitmap rotaingImageView(int angle, Bitmap bitmap) {
        Bitmap returnBm = null;
        // 根据旋转角度，生成旋转矩阵
        Matrix matrix = new Matrix();
        matrix.postRotate(angle);
        try {
            // 将原始图片按照旋转矩阵进行旋转，并得到新的图片
            returnBm = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        } catch (OutOfMemoryError e) {
        }
        if (returnBm == null) {
            returnBm = bitmap;
        }
        if (bitmap != returnBm) {
            bitmap.recycle();
        }
        return returnBm;
    }

    /**
     * 读取照片exif信息中的旋转角度
     *
     * @param path 照片路径
     * @return角度
     */
    public static int readPictureDegree(String path) {
        int degree = 0;
        try {
            ExifInterface exifInterface = new ExifInterface(path);
            int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
            switch (orientation) {
                case ExifInterface.ORIENTATION_ROTATE_90:
                    degree = 90;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_180:
                    degree = 180;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_270:
                    degree = 270;
                    break;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return degree;
    }

    /**
     * 较正图片角度
     *
     * @param absolutePath
     * @return
     */
    public static String correctImage(String absolutePath) {
        StringBuilder sb = new StringBuilder();
        int degreen = ToolImage.readPictureDegree(absolutePath);
        ToolLog.d(ConString.TAG, "ToolImage图片旋转的角度是：" + degreen);
        String newPath = absolutePath;
        if (degreen != 0) {
            sb.setLength(0);
            int lastIndex = absolutePath.lastIndexOf(".");
            newPath = sb.append(absolutePath.substring(0, lastIndex))
                    .append(1)
                    .append(absolutePath.substring(lastIndex))
                    .toString();
            Bitmap bitmapAbsolute = BitmapFactory.decodeFile(absolutePath);
            //对图片进行旋转轿正
            Bitmap bitmapCorrect = ToolImage.rotaingImageView(degreen, bitmapAbsolute);
            boolean ret = ToolImage.save(bitmapCorrect, newPath, Bitmap.CompressFormat.JPEG, true);
            if (ret) {
                ToolFileUtils.removeFile(absolutePath);
            }
        }
        return newPath;
    }

}

下面是上面用的save工具类 

package com.blankj.utilcode.util;

import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.media.ExifInterface;
import android.os.Build;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RenderScript;
import android.renderscript.ScriptIntrinsicBlur;
import android.support.annotation.ColorInt;
import android.support.annotation.DrawableRes;
import android.support.annotation.FloatRange;
import android.support.annotation.IntRange;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.v4.content.ContextCompat;
import android.view.View;

import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * <pre>
 *     author: Blankj
 *     blog  : http://blankj.com
 *     time  : 2016/08/12
 *     desc  : utils about image
 * </pre>
 */
public final class ImageUtils {

    private ImageUtils() {
        throw new UnsupportedOperationException("u can't instantiate me...");
    }

    

    /**
     * Save the bitmap.
     *
     * @param src      The source of bitmap.
     * @param filePath The path of file.
     * @param format   The format of the image.
     * @return {@code true}: success<br>{@code false}: fail
     */
    public static boolean save(final Bitmap src,
                               final String filePath,
                               final CompressFormat format) {
        return save(src, getFileByPath(filePath), format, false);
    }

    /**
     * Save the bitmap.
     *
     * @param src    The source of bitmap.
     * @param file   The file.
     * @param format The format of the image.
     * @return {@code true}: success<br>{@code false}: fail
     */
    public static boolean save(final Bitmap src, final File file, final CompressFormat format) {
        return save(src, file, format, false);
    }

    /**
     * Save the bitmap.
     *
     * @param src      The source of bitmap.
     * @param filePath The path of file.
     * @param format   The format of the image.
     * @param recycle  True to recycle the source of bitmap, false otherwise.
     * @return {@code true}: success<br>{@code false}: fail
     */
    public static boolean save(final Bitmap src,
                               final String filePath,
                               final CompressFormat format,
                               final boolean recycle) {
        return save(src, getFileByPath(filePath), format, recycle);
    }

    /**
     * Save the bitmap.
     *
     * @param src     The source of bitmap.
     * @param file    The file.
     * @param format  The format of the image.
     * @param recycle True to recycle the source of bitmap, false otherwise.
     * @return {@code true}: success<br>{@code false}: fail
     */
    public static boolean save(final Bitmap src,
                               final File file,
                               final CompressFormat format,
                               final boolean recycle) {
        if (isEmptyBitmap(src) || !createFileByDeleteOldFile(file)) return false;
        OutputStream os = null;
        boolean ret = false;
        try {
            os = new BufferedOutputStream(new FileOutputStream(file));
            ret = src.compress(format, 100, os);
            if (recycle && !src.isRecycled()) src.recycle();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return ret;
    }

   
}

 

调用方法：其中filepath是拍照之后获取的手机路径。newPath即为较正之后的图片路径。 

String newPath=ToolImage.correctImage(filePath);
final Bitmap bitmap = BitmapFactory.decodeFile(newPath);
imageView.setImageBitmap(bitmap)

需要注意的是这里图片由于进行了图片文件写入功能，最好在线程里进行