Note: In this code, when I click the Button, it takes the screenshot as Image and saves it in sdcard location. I used boolean condition and an if statement in onDraw method, because the renderer class may call the onDraw method anytime and anyway, and without the if this code may save lots of images in the memory card.
MainActivity class:
protected boolean printOptionEnable = false;
saveImageButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.v("hari", "pan button clicked");
isSaveClick = true;
myRenderer.printOptionEnable = isSaveClick;
}
});
MyRenderer class:
int width_surface , height_surface ;
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
Log.i("JO", "onSurfaceChanged");
// Adjust the viewport based on geometry changes,
// such as screen rotation
GLES20.glViewport(0, 0, width, height);
float ratio = (float) width / height;
width_surface = width ;
height_surface = height ;
}
@Override
public void onDrawFrame(GL10 gl) {
try {
if (printOptionEnable) {
printOptionEnable = false ;
Log.i("hari", "printOptionEnable if condition:" + printOptionEnable);
int w = width_surface ;
int h = height_surface ;
Log.i("hari", "w:"+w+"-----h:"+h);
int b[]=new int[(int) (w*h)];
int bt[]=new int[(int) (w*h)];
IntBuffer buffer=IntBuffer.wrap(b);
buffer.position(0);
GLES20.glReadPixels(0, 0, w, h,GLES20.GL_RGBA,GLES20.GL_UNSIGNED_BYTE, buffer);
for(int i=0; i<h; i++)
{
//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-i-1)*w+j]=pix1;
}
}
Bitmap inBitmap = null ;
if (inBitmap == null || !inBitmap.isMutable()
|| inBitmap.getWidth() != w || inBitmap.getHeight() != h) {
inBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
}
//Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
inBitmap.copyPixelsFromBuffer(buffer);
//return inBitmap ;
// return Bitmap.createBitmap(bt, w, h, Bitmap.Config.ARGB_8888);
inBitmap = Bitmap.createBitmap(bt, w, h, Bitmap.Config.ARGB_8888);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
inBitmap.compress(CompressFormat.JPEG, 90, bos);
byte[] bitmapdata = bos.toByteArray();
ByteArrayInputStream fis = new ByteArrayInputStream(bitmapdata);
final Calendar c=Calendar.getInstance();
long mytimestamp=c.getTimeInMillis();
String timeStamp=String.valueOf(mytimestamp);
String myfile="hari"+timeStamp+".jpeg";
dir_image = new File(Environment.getExternalStorageDirectory()+File.separator+
"printerscreenshots"+File.separator+"image");
dir_image.mkdirs();
try {
File tmpFile = new File(dir_image,myfile);
FileOutputStream fos = new FileOutputStream(tmpFile);
byte[] buf = new byte[1024];
int len;
while ((len = fis.read(buf)) > 0) {
fos.write(buf, 0, len);
}
fis.close();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Log.v("hari", "screenshots:"+dir_image.toString());
}
} catch(Exception e) {
e.printStackTrace();
}
}
