Я уже использую метод сжатия. Я хочу использовать любые новые техники, которые сжимают изображение еще меньшего размера без потери качества. Вот код с использованием, пожалуйста, скажите мне любую другую концепцию, которая лучше сжимает изображение, чем это, с точки зрения размера и качества. Заранее спасибо.
public String compress(int qualitypercentage, String imageUri, String FilePath, String FilenameWithExt, Uri contentUri) {
String filePath = null;
if(contentUri == null) {
filePath = getRealPathFromURI(imageUri);
} else {
if (Build.VERSION.SDK_INT < 11)
filePath = getRealPathFromURI_BelowAPI11(cntxt, contentUri);
// SDK >= 11 && SDK < 19
else if (Build.VERSION.SDK_INT <= 19)
filePath = getRealPathFromURI_API11to18(cntxt, contentUri);
// SDK > 19 (Android 4.4)
else
filePath = getRealPathFromURI_API19(cntxt, contentUri);
}
getRealPathFromURI(imageUri);
Bitmap scaledBitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
options.inSampleSize = 1;
// options.inPreferredConfig = Bitmap.Config.RGB_565;
// options.inDither = true;
//options.inTempStorage = new byte[16 * 1024];
File imgFile = new File(filePath);
Bitmap bmp = BitmapFactory.decodeFile(imgFile.getAbsolutePath(),options);
int actualHeight = options.outHeight;
int actualWidth = options.outWidth;
//max Height and width values of the compressed image is taken as 816x612
float maxHeight = 816.0f;
float maxWidth = 612.0f;
float imgRatio = actualWidth / actualHeight;
float maxRatio = maxWidth / maxHeight;
//width and height values are set maintaining the aspect ratio of the image
if (actualHeight > maxHeight || actualWidth > maxWidth) {
if (imgRatio < maxRatio) {
imgRatio = maxHeight / actualHeight;
actualWidth = (int) (imgRatio * actualWidth);
actualHeight = (int) maxHeight;
} else if (imgRatio > maxRatio) {
imgRatio = maxWidth / actualWidth;
actualHeight = (int) (imgRatio * actualHeight);
actualWidth = (int) maxWidth;
} else {
actualHeight = (int) maxHeight;
actualWidth = (int) maxWidth;
}
}
//setting inSampleSize value allows to load a scaled down version of the original image
options.inSampleSize = calculateInSampleSize(options, actualWidth, actualHeight);
//inJustDecodeBounds set to false to load the actual bitmap
options.inJustDecodeBounds = false;
//options.inTempStorage = new byte[16 * 1024];
//options.inPurgeable = true;
try {
//load the bitmap from its path
bmp = BitmapFactory.decodeFile(filePath, options);
} catch (OutOfMemoryError exception) {
exception.printStackTrace();
}
try {
scaledBitmap = Bitmap.createBitmap(actualWidth, actualHeight, Bitmap.Config.ARGB_8888);
} catch (OutOfMemoryError exception) {
exception.printStackTrace();
}
float ratioX = actualWidth / (float) options.outWidth;
float ratioY = actualHeight / (float) options.outHeight;
float middleX = actualWidth / 2.0f;
float middleY = actualHeight / 2.0f;
Matrix scaleMatrix = new Matrix();
scaleMatrix.setScale(ratioX, ratioY, middleX, middleY);
Canvas canvas = new Canvas(scaledBitmap);
canvas.setMatrix(scaleMatrix);
canvas.drawBitmap(bmp, middleX - bmp.getWidth() / 2, middleY - bmp.getHeight() / 2, new Paint(Paint.FILTER_BITMAP_FLAG));
//check the rotation of the image and display it properly
ExifInterface exif;
try {
exif = new ExifInterface(filePath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 0);
//Log.d("EXIF", "Exif: " + orientation);
Matrix matrix = new Matrix();
if (orientation == 6) {
matrix.postRotate(90);
//Log.d("EXIF", "Exif: " + orientation);
} else if (orientation == 3) {
matrix.postRotate(180);
//Log.d("EXIF", "Exif: " + orientation);
} else if (orientation == 8) {
matrix.postRotate(270);
//Log.d("EXIF", "Exif: " + orientation);
}
scaledBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix, true);
} catch (IOException e) {
e.printStackTrace();
}
FileOutputStream out = null;
String filename = MakeFilename(FilePath, FilenameWithExt);
try {
out = new FileOutputStream(filename);
bmp.recycle();
//write the compressed bitmap at the destination specified by filename.
scaledBitmap.compress(Bitmap.CompressFormat.JPEG, qualitypercentage, out);
int imageSizeAF=sizeOf(scaledBitmap);
String Af_image=getByteSize((long) imageSizeAF);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return filename;
}
Пожалуйста, дайте мне знать о любых новейших методах.