Develop Reference

Saved Image base64 is wrong

i am trying to save some images to a web server. So what I doe is I convert my file in android to Base64 string, send it to my server and save the Base64 string in my database. When I need, I read the string from that database and decode it. But there is some problem with my image because the image is all grey.
This is my code to convert the image to base64:
BitmapFactory.Options options = new BitmapFactory.Options();
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath(), options);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
int imageWidth = options.outWidth;
if (imageWidth > widthPixels) {
myBitmap.compress(Bitmap.CompressFormat.JPEG, 50, byteArrayOutputStream);
} else {
myBitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
}
byte[] byteArray = byteArrayOutputStream.toByteArray();
String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
Then I send the string "encoded" to the server and save it in the database.
And this is part of my image saved in the server
/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDABALDA4MChAODQ4SERATGCgaGBYWGDEjJR0oOjM9PDkz
ODdASFxOQERXRTc4UG1RV19iZ2hnPk1xeXBkeFxlZ2P/2wBDARESEhgVGC8aGi9jQjhCY2NjY2Nj
for some reason there are some "\n" and I think that this is causing my problem. I have already tried to remove them with a replaceAll but didn't worked.
This is the output I get
This is my database structure:
I'm saving the encoded 64base image as a string in the column caled "imagemBase". Could the problem be in the type or in the codification that i'm using?

I using this methods an worked for me:
public static String encodeBitmap(Bitmap bitmap) {
if (bitmap != null) {
bitmap = resize(bitmap, 800, 800);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] byteArrayImage = baos.toByteArray();
return Base64.encodeToString(byteArrayImage, Base64.DEFAULT);
}
return null;
}
public static Bitmap decodeBitmap(String encodedImage) {
byte[] decodedString = Base64.decode(encodedImage, Base64.DEFAULT);
return BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
}
public static Bitmap resize(Bitmap image, int maxWidth, int maxHeight) {
if (maxHeight > 0 && maxWidth > 0) {
int width = image.getWidth();
int height = image.getHeight();
float ratioBitmap = (float) width / (float) height;
float ratioMax = (float) maxWidth / (float) maxHeight;
int finalWidth = maxWidth;
int finalHeight = maxHeight;
if (ratioMax > ratioBitmap) {
finalWidth = (int) ((float) maxHeight * ratioBitmap);
} else {
finalHeight = (int) ((float) maxWidth / ratioBitmap);
}
image = Bitmap.createScaledBitmap(image, finalWidth, finalHeight, true);
return image;
} else {
return image;
}
}

I have solved the problem. When I converted the image to base64 the string that I received hade some + cahrs in it and for some reason when I sent it to the server the + was replaced with a blank space. I needed to make a replace on the php file where I replaced all black spaces with the + character before saving the string in the database.

How to upload image to server in high quality and fast

Actually I'm trying to upload image into server with excellent quality .Currently I'm converting an array of bitmap to base64 string arrayList and then sending that to server by socket.io.But the problem is when I'm trying to increase the quality of bitmap the base64 conversion is taking a lot of time and it's quite inefficient .Even after taking so much time I'm getting low quality images in server .So can anyone please help me to fix this problem and increase the efficiency of upload ?
Code:
public ArrayList<String> convert(ArrayList<Bitmap> bitmap){
ArrayList<String> pics=new ArrayList<>();
for(int i=0;i<bitmap.size();i++){
pics.add(getStringImage(bitmap.get(i)));
}
return pics;
}
public static String getStringImage(Bitmap bmp){
//I've givent maxSize as 500
int outWidth;
int outHeight;
int inWidth = bmp.getWidth();
int inHeight = bmp.getHeight();
if(inWidth > inHeight){
outWidth = maxSize;
outHeight = (inHeight * maxSize) / inWidth;
} else {
outHeight = maxSize;
outWidth = (inWidth * maxSize) / inHeight;
}
Bitmap new_bitmap = Bitmap.createScaledBitmap(bmp, outWidth, outHeight, false);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new_bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
}
// Sending to server
final JSONObject obji=new JSONObject();
try {
//bit is arraylist of bitmap
obji.put("uploads_username",username);
obji.put("uploads",convert(bit));
socket.emit("data",obji);
}catch(Exception e){
}

Compress a bitmap to 50kb

I need to build an app which take a picture or select an image from the gallery and I need to send it to the server with a size of 50kb.
Until now, I only find a code in which you can resize the width and height of the bitmap, but thanks to it, the bitmap loses quality.
public Bitmap getResizedBitmap(Bitmap image, int maxSize) {
int width = image.getWidth();
int height = image.getHeight();
float bitmapRatio = (float)width / (float) height;
if (bitmapRatio > 1) {
width = maxSize;
height = (int) (width / bitmapRatio);
} else {
height = maxSize;
width = (int) (height * bitmapRatio);
}
return Bitmap.createScaledBitmap(image, width, height, true);
}
Thanks in advance!

ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 100, baos);
int options = 100;
while ( baos.toByteArray().length > 1024*50) {
baos.reset();
image.compress(Bitmap.CompressFormat.JPEG, options, baos);
options -= 10;
}
ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);
return bitmap;

Convert image to bitmap and compress

I have a function convert image to array byte (to save image into database sqlite). I have a problem, how to compress image and avoid out of memory error?
This is my code
Thanks in advance.
public byte[] ConverttoArrayByte(ImageView img)
{
try{
BitmapDrawable bitmapDrawable = (BitmapDrawable) img.getDrawable();
Bitmap bitmap = bitmapDrawable.getBitmap();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
return stream.toByteArray();
}catch (NullPointerException e){
Log.d("Tag", "Null");
e.printStackTrace();
}
return null;
}

You can try to use a small function that resizes the image:
public static Bitmap getResizedBitmap(Bitmap image, int maxSize) {
int width = image.getWidth();
int height = image.getHeight();
float bitmapRatio = (float)width / (float) height;
if (bitmapRatio > 1) {
width = maxSize;
height = (int) (width / bitmapRatio);
} else {
height = maxSize;
width = (int) (height * bitmapRatio);
}
return Bitmap.createScaledBitmap(image, width, height, true);
}
And call this function in this way Bitmap bitmap = GetAttachmentsUtils.getResizedBitmap(bitmap, maxSize); to get the resized bitmap.
Then you can compress it using bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); and perform the same operations you were doing previously.

How to reduce image size into 50 to 100kb while updating into database in android

How to reduce captured image size while uploading into db, It's take so much time to uploading and so much time to downloading to. Please help me on this one, How to resize image to 100kb.. Help me fast.
public Bitmap getResizedBitmap(Bitmap myBitmap) {
final int maxSize = 1024;
int outWidth;
int outHeight;
int inWidth = myBitmap.getWidth();
int inHeight = myBitmap.getHeight();
if (inWidth > inHeight) {
outWidth = maxSize;
outHeight = (inHeight * maxSize) / inWidth;
} else {
outHeight = maxSize;
outWidth = (inWidth * maxSize) / inHeight;
}
return Bitmap.createScaledBitmap(myBitmap, outWidth, outHeight, false);
}

Forget all the Thing.
Just do this
Bitmap yourBitmap;
resized = Bitmap.createScaledBitmap(yourBitmap,(int)(yourBitmap.getWidth()*0.8), (int)(yourBitmap.getHeight()*0.8), true);