screnshot in android
- by ujjawal
The following is the code I am using to take a screen shot using GLSurfaceView. But I dont know why the onDraw() method in the GLSurfaceView.Renderer Class is not being called.
Please if some one can look at the code below and point out what am I doing wrong.`public class MainActivity extends Activity {
private GLSurfaceView mGLView;
int x,y,w,h;
Display disp;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
// ToDo add your GUI initialization code here
setContentView(R.layout.main);
x=0;
y=0;
disp = getWindowManager().getDefaultDisplay();
w = disp.getWidth();
h = disp.getHeight();
mGLView = new ClearGLSurfaceView(this);
}
class ClearGLSurfaceView extends GLSurfaceView {
public ClearGLSurfaceView(Context context) {
super(context);
setDebugFlags(DEBUG_CHECK_GL_ERROR | DEBUG_LOG_GL_CALLS);
mRenderer = new ClearRenderer();
setRenderer(mRenderer);
}
ClearRenderer mRenderer;
}
class ClearRenderer implements GLSurfaceView.Renderer {
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// Do nothing special.
}
public void onSurfaceChanged(GL10 gl, int w, int h) {
//gl.glViewport(0, 0, w, h);
}
public void onDrawFrame(GL10 gl) {
//gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
int b[]=new int[w*(y+h)];
int bt[]=new int[w*h];
IntBuffer ib=IntBuffer.wrap(b);
ib.position(0);
gl.glReadPixels(x, 0, w, y+h, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, ib);
for(int i=0, k=0; i<h; i++, k++)
{//remember, that OpenGL bitmap is incompatible with Android bitmap
//and so, some correction need.
for(int j=0; j<w; j++)
{
int pix=b[i*w+j];
int pb=(pix>>16)&0xff;
int pr=(pix<<16)&0x00ff0000;
int pix1=(pix&0xff00ff00) | pr | pb;
bt[(h-k-1)*w+j]=pix1;
}
}
Bitmap bmp = Bitmap.createBitmap(bt, w, h,Bitmap.Config.ARGB_8888);
try
{
File f = new File("/sdcard/testpicture.png");
f.createNewFile();
FileOutputStream fos=new FileOutputStream(f);
bmp.compress(CompressFormat.PNG, 100, fos);
try
{
fos.flush();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
try
{
fos.close();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch(IOException e)
{
e.printStackTrace();
}
}
}
}
`
Please someone help me out.
I have just started learning to work on android.
