OutputStreamProgress.java

package com.android.volley.toolbox.multipart;
import java.io.IOException;
import java.io.OutputStream;

import com.android.volley.Response.ProgressListener;

public class OutputStreamProgress extends OutputStream {

    private final OutputStream outstream;
    private long bytesWritten = 0;
    private long totalSize = 0;
    private final ProgressListener progressListener;
    public OutputStreamProgress(OutputStream outstream, ProgressListener progressListener) {
        this.outstream = outstream;
        this.progressListener = progressListener;
    }

    @Override
    public void write(int b) throws IOException {
        outstream.write(b);
        if(null != progressListener){
            bytesWritten++;
        	progressListener.onProgress(bytesWritten, totalSize);
        }
    }

    @Override
    public void write(byte[] b) throws IOException {
        outstream.write(b);
        if(null != progressListener){
            bytesWritten += b.length;
        	progressListener.onProgress(bytesWritten, totalSize);
        }
    }

    @Override
    public void write(byte[] b, int off, int len) throws IOException {
        outstream.write(b, off, len);
        if(null != progressListener){
            bytesWritten += len;
        	progressListener.onProgress(bytesWritten, totalSize);
        }
    }

    @Override
    public void flush() throws IOException {
        outstream.flush();
    }

    @Override
    public void close() throws IOException {
        outstream.close();
    }
}