title: How to save a bitmap on internal storage
body: <p>this is my code I and I want to save this bitmap on my internal storage. The public boolean saveImageToInternalStorage is a code from google but I don't know how to use it. when I touch button2 follow the button1 action.</p>
  
  <pre><code>public class MainActivity extends Activity implements OnClickListener {
  Button btn, btn1;
  SurfaceView sv;
  Bitmap bitmap;
  Canvas canvas;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      btn=(Button)findViewById(R.id.button1);
      btn1=(Button)findViewById(R.id.button2);
      sv=(SurfaceView)findViewById(R.id.surfaceView1);
  
      btn.setOnClickListener(this);
      btn1.setOnClickListener(this);
  
      bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
  
  }
  @Override
  public void onClick(View v) {
      canvas=sv.getHolder().lockCanvas();
      if(canvas==null) return;
      canvas.drawBitmap(bitmap, 100, 100, null);
      sv.getHolder().unlockCanvasAndPost(canvas);
  
  
  }
  
  public boolean saveImageToInternalStorage(Bitmap image) {
  
      try {
      // Use the compress method on the Bitmap object to write image to
      // the OutputStream
      FileOutputStream fos = openFileOutput("desiredFilename.png", Context.MODE_PRIVATE);
  
      // Writing the bitmap to the output stream
      image.compress(Bitmap.CompressFormat.PNG, 100, fos);
      fos.close();
  
      return true;
      } catch (Exception e) {
      Log.e("saveToInternalStorage()", e.getMessage());
      return false;
      }
      }
   }
  </code></pre>