Android Open Source - andromon-android Andro Mon Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.andromon;
/*from   ww  w  .  j  a v  a  2  s . c o  m*/
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.usb.UsbAccessory;
import android.hardware.usb.UsbManager;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class AndroMonActivity extends Activity {

  private static final String ACTION_USB_PERMISSION =
          "com.android.example.USB_PERMISSION";


  private PendingIntent mPermissionIntent;
  private UsbManager manager = null;
  private UsbAccessory accessory = null;
  private TextView textView = null;
  private Button getPictureButton;
  private Button connectButton;
  private ImageView imageView;
  ParcelFileDescriptor mFileDescriptor = null;
    FileInputStream mInputStream = null;
    FileOutputStream mOutputStream = null;
    FileDescriptor fd = null;
    int i = 0;
    
    private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
       
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (ACTION_USB_PERMISSION.equals(action)) {
                synchronized (this) {
                  accessory = (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);

                    if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
                        if(accessory != null){
                          mFileDescriptor = manager.openAccessory(accessory);
                            if (mFileDescriptor != null) {
                              textView.setText("Connected");
                                fd = mFileDescriptor.getFileDescriptor();
                                mInputStream = new FileInputStream(fd);
                                mOutputStream = new FileOutputStream(fd);
                            }
                        }
                    }
                    else {
                        //Log.d(TAG, "permission denied for accessory " + accessory);
                      Toast.makeText(getApplicationContext(), "Permission Denied!", Toast.LENGTH_LONG).show();
                    }
                }
            }
        }
    };

  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_andro_mon);
        
        textView = (TextView)this.findViewById(R.id.textView1);
        getPictureButton = (Button)this.findViewById(R.id.button1);
        connectButton = (Button) this.findViewById(R.id.button2);
        imageView = (ImageView)this.findViewById(R.id.imageView1);
        
        mPermissionIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(ACTION_USB_PERMISSION), 0);
      IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
      registerReceiver(mUsbReceiver, filter);
        
        
        getPictureButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
              textView.setText("Reading");
              try{
                Toast.makeText(getApplicationContext(), "Reading", Toast.LENGTH_SHORT).show();
                  byte buffer[] = new byte[4];
                  try {
                    mInputStream.read(buffer, 0, 4);
                    
                    int byteCount = 0;
                    for (int i = 0; i < 4; i++) {
                          int shift = (4 - 1 - i) * 8;
                          byteCount += (buffer[i] & 0x000000FF) << shift;
                      }                    
                    
                    Toast.makeText(getApplicationContext(), byteCount + " bytes", Toast.LENGTH_SHORT).show();
                    byteCount = 21842;
                    
                    buffer = new byte[byteCount];
                    mInputStream.read(buffer, 0, byteCount);
                    
                    Bitmap bmp = BitmapFactory.decodeByteArray(buffer, 0, buffer.length);
                    imageView.setImageBitmap(bmp);
            } catch (Exception e1) {
              textView.setText("Error again");
              Toast.makeText(getApplicationContext(), "Error again", Toast.LENGTH_SHORT).show();
              e1.printStackTrace();
            }
                    
                    try {
              mInputStream.close();
            } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
            }
                    try {
              mOutputStream.close();
            } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
            }
                    try {
              mFileDescriptor.close();
            } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
            }
              }
              catch (Exception ex){
                textView.setText("Moha bipod" + ex.getMessage());
              }
              
            }
        });
        
        connectButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
              textView.setText("connecting");
              
              manager = (UsbManager) getSystemService(Context.USB_SERVICE);
              UsbAccessory[] accessoryList = manager.getAccessoryList();
              manager.requestPermission(accessoryList[0], mPermissionIntent);
              
            }
        });
    }
}

Java Source Code List

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