How to read png images form inputstream in java

Question

There are 2 applications. One application act as server and sends continuously screen shot of desktop by using the following code.

Robot robot=new Robot();
OutputStream os;
BufferedImage image = robot.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
ImageIO.write(image, "png", os);

The second application is Android application acts a client application and has to read continuously the above image stream from inputstream.

Could please help me to read the png images from inputstream in the client application.

Thanks & Regards Mini.

there is `ImageIO.read(InpusTream)` too ;), you can write (as you do) and read... — Francisco Spaeth, Jul 04 '12 at 12:57
is there any way to read the png image header without using the java.awt.* package and javax.imageIo.* ? — mini, Jul 05 '12 at 09:41

score 2 · Answer 1 · answered Jul 04 '12 at 12:56

2

In client application, read the InputStream via Socket.getInputStream() method.

 BufferedInputStream in = new BufferedInputStream(socket.getInputStream());
 BufferedImage image = ImageIO.read(in);

answered Jul 04 '12 at 12:56

KV Prajapati

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Here I am not using the java.awt package – mini Jul 04 '12 at 13:27
As `ImageIO` will wrap the stream in an `ImageInputStream` I doubt that the added `BufferedInputStream` will be of much use. – MvG Jul 04 '12 at 13:27
The Application thread is hanging at this line BufferedInputStream in = new BufferedInputStream(socket.getInputStream()); Since the server sends the imagestream continously to the client. – mini Jul 04 '12 at 13:43

score 1 · Answer 2 · answered Dec 08 '14 at 01:40

Android SDK does not support the method ImageIO.read(). Even if you can compile your code, your android application will get crashed and have error about missing libraries like this:

could not find method javax.imageio.imageio.read

What I suggest is using bitmapping instead of this...

How to read png images form inputstream in java

2 Answers2

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