When calling the system camera to take a photo, I suddenly found that the photo taken on some models may not be the original angle, either rotated 90 degrees or rotated 180 degrees. In order to adapt to this problem, the following is a wave of routines,,,
Call the system camera:
/**
* 打开系统相机记录成长图片
*/
private void showCamera(int cameraType) {
if (!Environment.MEDIA_MOUNTED.equals(Environment
.getExternalStorageState())) {
Toast.makeText(getActivity(), "未检测到SDCard，拍照功能暂时停用",
Toast.LENGTH_LONG).show();
return;
}
Intent imageCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
long time = currentTimeMillis();
String imgName = new SimpleDateFormat("yyyyMMdd_HHmmss").format(time);
String path = Environment.getExternalStorageDirectory()
+ File.separator + "DCIM" + File.separator + "Camera"
+ File.separator;
File file = new File(path);
if (!file.exists()) {
file.mkdir();
}
cameraFilePath = path + imgName + ".jpg"; //拍照保存文件路径+文件名称+文件格式
File out = new File(cameraFilePath);
if (!out.exists()) {
try {
out.createNewFile();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
Uri uri = Uri.fromFile(out);
imageCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
MediaScannerConnection.scanFile(getActivity(),
new String[]{cameraFilePath}, null, null);
startActivityForResult(imageCaptureIntent, cameraType);
}
Override the camera capture callback:
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == -1) {
switch (requestCode) {
case 102:
//获取拍照路径
//检测照片是否旋转
//是否压缩
//是否保存源文件
String rotatePhoto = PhotoBitmapUtils.amendRotatePhoto(cameraFilePath, getActivity(), false);
break;
default:
break;
}
} else {
switch (requestCode) {
case 102:
// 取消拍照
File file = new File(cameraFilePath);
if (file.exists()) {
file.delete();
}
break;
default:
break;
}
}
}
Detection method:
/**
* 处理旋转后的图片
* 默认不压缩
*
* @param originpath 原图路径
* @param context 上下文
* @param isReplaceFile 是否替换之前的文件 true 替换 false 不替换 默认保存位置
* @return 返回修复完毕后的图片路径
*/
public static String amendRotatePhoto(String originpath, Context context, boolean isReplaceFile) {
return amendRotatePhoto(originpath, context, false, isReplaceFile);
}
/**
* 处理旋转后的图片
* 默认不压缩
* 默认替换原图路径下保存
*
* @param originpath
* @param context
* @return
*/
public static String amendRotatePhoto(String originpath, Context context) {
return amendRotatePhoto(originpath, context, false, true);
}
/**
* 处理旋转后的图片
*
* @param originpath 原图路径
* @param context 上下文
* @param isCompress 是否压缩
* @param isReplaceFile 是否替换之前的文件 true 替换 false 不替换 默认保存位置
* @return 返回修复完毕后的图片路径
*/
public static String amendRotatePhoto(String originpath, Context context, boolean isCompress, boolean isReplaceFile) {
if (TextUtils.isEmpty(originpath)) return originpath;
// 取得图片旋转角度
int angle = readPictureDegree(originpath);
//是否压缩
Bitmap bmp = null;
if (isCompress) {
// 把原图压缩后得到Bitmap对象
bmp = getCompressPhoto(originpath);
}
if (bmp != null) {
//处理旋转
Bitmap bitmap = null;
if (angle != 0) {
// 修复图片被旋转的角度
bitmap = rotaingImageView(angle, bmp);
}
if (bitmap != null) {
}
// 保存修复后的图片并返回保存后的图片路径
return savePhotoToSD(bitmap, originpath, context, isReplaceFile);
} else {
Bitmap localBitmap = getLocalBitmap(originpath);
if (localBitmap == null) return originpath;
//处理旋转
Bitmap bitmap = null;
if (angle != 0) {
// 修复图片被旋转的角度
bitmap = rotaingImageView(angle, localBitmap);
}
if (bitmap != null) {
return savePhotoToSD(bitmap, originpath, context, isReplaceFile);
} else {
return originpath;
}
}
}
/**
* 读取照片旋转角度
*
* @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;
}
/* 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;
}
/**
* 保存Bitmap图片在SD卡中
* 如果没有SD卡则存在手机中
*
* @param mbitmap 需要保存的Bitmap图片
* @param originpath 文件的原路径
* @param isReplaceFile 是否替换原文件
* @return 保存成功时返回图片的路径，失败时返回null
*/
public static String savePhotoToSD(Bitmap mbitmap, String originpath, Context context, boolean isReplaceFile) {
FileOutputStream outStream = null;
String fileName = "";
if (mbitmap == null) return originpath;
if (isReplaceFile) {
fileName = getPhotoFileName(context);
} else {
if (TextUtils.isEmpty(originpath)) return originpath;
fileName = originpath;
}
try {
outStream = new FileOutputStream(fileName);
// 把数据写入文件，100表示不压缩
mbitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
return fileName;
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
try {
if (outStream != null) {
// 记得要关闭流！
outStream.close();
}
if (mbitmap != null) {
mbitmap.recycle();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}