Develop Reference

How to store background image from imageView in bitmap?

I am trying to store my image from imageView in bitmap, so that I can store it in the gallery of the android device. Every time I save an image, the background of the imageView is not stored. What am I missing?
Here is my code:
ImageView imageView = (ImageView) findViewById(R.id.img);
imageView.setBackgroundResource(R.drawable.img1);
BitmapDrawable draw = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = draw.getBitmap();
Code to store the image into the gallery is:
FileOutputStream outStream = null;
File dir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
"MyAlbum");
if (!dir.exists()) {
if (!dir.mkdirs()) {
Log.d("MyAlbum", "failed to create directory");
Toast.makeText(MainActivity.this, "Failed to make directory", Toast.LENGTH_SHORT).show();
}
}
String fileName = String.format("%d.jpg", System.currentTimeMillis());
File outFile = new File(dir, fileName);
try {
outStream = new FileOutputStream(outFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
outStream.flush();
outStream.close();
Toast.makeText(getApplicationContext(), "PICTURE SAVED", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(dir));
sendBroadcast(intent);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

You can take a screenshot of this view (ImageView) in this case, it will simply take what's drawn on this view at this moment and turn it into a bitmap you can save.
Answer is mentioned here already.
The magical part is that
ImageView yourImageView = .. // Get reference it to your view.
yourImageView.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(yourImageView.getDrawingCache());
yourImageView.setDrawingCacheEnabled(false);
Ta-da you can use your snapshot btimap.

you can try this out,
private void saveImageToStorage(Bitmap finalBitmap, String image_name) {
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root);
myDir.mkdirs();
String fname = "Image-" + image_name+ ".jpg";
File file = new File(myDir, fname);
if (file.exists()) file.delete();
Log.i("LOAD", root + fname);
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
Happy coding :-)

How to create Image File inside Internal Cache Directory in Android

I want to have image.png inside cache/images/ in Internal Storage of Android.
I am not able to have it with following code:
File directory = new File(getContext().getCacheDir(), "images");
directory.mkdirs();
File mypath=new File(directory,"image.png");
FileOutputStream fos = null;
try {
fos = new FileOutputStream(mypath);
bmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
With the above code I am not even able to create a directory named images. Pls help, I am beginner.

Try this:
File sd = getCacheDir();
File folder = new File(sd, "/myfolder/");
if (!folder.exists()) {
if (!folder.mkdir()) {
Log.e("ERROR", "Cannot create a directory!");
} else {
folder.mkdirs();
}
}
File fileName = new File(folder,"mypic.jpg");
try {
FileOutputStream outputStream = new FileOutputStream(String.valueOf(fileName));
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);
outputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

I have implemented it like this...
//create file
File file = new File(context.getExternalCacheDir(), System.currentTimeMillis() + ".png");
//draw image if created successfully
if (file.createNewFile()) {
//initialize image BitMap
Bitmap bitmap = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);
//initialize canvas and paint object
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint(Paint.LINEAR_TEXT_FLAG | Paint.ANTI_ALIAS_FLAG);
//design part goes here using Paint and Canvas
...
//get file output stream and draw design on image file
FileOutputStream fileOutputStream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream);
fileOutputStream.flush();
fileOutputStream.close();
}

write image in external directory android

How to write image in phone directory. Directory is created but i could not write image in this folder. Here is my code .please check if i am doing something wrong thanks in advance.
Bitmap bitmap;
String directory = new_path; // I am getting path here of image like sdcard/0/emulated/image.jpg
String folder_name = "abc"
bitmap = BitmapFactory.decodeFile(directory);
iv_6.setImageBitmap(bitmap); // image displayed here but not saving in directory.
try {
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator +folder_name);
f.mkdirs();
FileOutputStream fo = new FileOutputStream(f);
bitmap.compress(Bitmap.CompressFormat.JPEG, 40, fo);
fo.close();
}catch (Exception e)
{
e.printStackTrace();
}

public void savePng(Bitmap bitmap, String filePath) {
try {
File temp = new File(filePath);
FileOutputStream os = new FileOutputStream(temp + ".png");
bitmap.compress(Bitmap.CompressFormat.PNG, 50, os);
os.flush();
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}

Saved Bitmap is black

I created a bitmap with text and I can view it in an Imageview, but when I save the Bitmap I only get a black image. I have spend three hours looking at similar questions but none of the worked for me. Here is the code.
Thanks for any help.
public void createBitmap(){
Bitmap LabelBitmap;
FileOutputStream fos = null;
//create Text Bitmap
LabelBitmap = textAsBitmap(this,"BRO D 0813","fonts/arialbd.ttf", 4, Color.BLACK);
//load bitmap in to Imageview
ImageView myImageView = (ImageView) findViewById(R.id.imageView);
myImageView.setImageBitmap(LabelBitmap);
// save bitmap
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/myfolder");
myDir.mkdirs();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
LabelBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
if (!myDir.exists()) {
myDir.mkdir();
}
File myDirFile = new File(root +"/myfolder/mybitmap.jpg");
try {
if(myDirFile.exists()){
myDirFile.delete();
}
myDirFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
try {
fos = new FileOutputStream(myDirFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
fos.write(bytes.toByteArray());
fos.flush();
fos.close();
Toast.makeText(this, "Image saved", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
}

JPEG Image has a black background by default, so if your text color is also black you will get a black image. If your image has no background color, you must save it as PNG. Change as following and have a try:
LabelBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
to:
LabelBitmap.compress(Bitmap.CompressFormat.PNG, 100, bytes);

How to write a Java.IO.FileOutputStream into photo.Compress(Bitmap.CompressFormat.Png, 100, outputstream)?

Having trouble with File coding. This code basically save the bitmap file into android gallery.
Java.IO.File MyDirectory = new Java.IO.File(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryPictures), "MyDirectory");
Java.IO.File MyFile= new Java.IO.File(MyDirectory , String.Format("Photo{0}.jpg", Guid.NewGuid()));
Bitmap photo;
Bundle extras = data.Extras;
photo = (Bitmap)extras.Get("data")
How to save the photo (Bitmap) into MyFolder android gallery?
I have tried this to save the photo:
Java.IO.FileOutputStream outFile = new Java.IO.FileOutputStream(MyFile);
photo.Compress(Bitmap.CompressFormat.Png, 100, outFile);
Error I received is when the photo is compress..
error: Cannot convert from Java.IO.FileOutputStream to System.IO.Stream.
Sorry, I am very newbie in File coding. Any helps or solutions are appreciated.

Here is my code.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
public static void saveBitmap(Context context, Bitmap bitmap) {
String env = Environment.getExternalStorageDirectory().getPath();
String path = env + "/test.png";
try {
File f = new File(path);
FileOutputStream fileOut = new FileOutputStream(f);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOut);
try {
fileOut.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
bitmap.recycle();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

This should work
var file = new FileStream(fname, FileMode.Create, FileAccess.Write, FileShare.None);
photo.Compress(Bitmap.CompressFormat.Jpeg, 85, file);

I use alternative way to compress my bitmap (using MemoryStream) and here is my code.
using(Bitmap bitmap = BitmapFactory.DecodeFile(myFileString))
{
MemoryStream stream = new MemoryStream();
bitmap.Compress(Bitmap.CompressFormat.Jpeg, 100, stream);
myWebService.functionSave(stream.ToArray());
}
//myWebservice function parameter.
functionSave(byte[] fileStream)
{
//... save your bitmap code using byte[]
}