Question

So I’m trying to have a button where users can choose between flash on/off/auto. This button is within my camera preview activity, but I’m not sure how to check certain parameters with one button.

    //Flash Button
    final Button flashButton = (Button) findViewById(id.camera_flash);
    flashButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if(mCamera != null){
                Parameters p = mCamera.getParameters();
                p.setFlashMode(Parameters.FLASH_MODE_AUTO);
                mCamera.setParameters(p);
                mCamera.startPreview();
                flashButton.setText("AUTO");
                Log.e("Torch","Torch On");
            }else{
                Parameters p = mCamera.getParameters();
                p.setFlashMode(Parameters.FLASH_MODE_OFF);
                mCamera.setParameters(p);
                mCamera.release();
                mCamera=null;
                flashButton.setText("OFF");

            }// maybe another one for ON



        }

Right now its setting if mCamera!=null but then how do I check if flash is AUTO, ON, or OFF? I’m thinking that there maybe a SWITCH instead? I’m trying to keep these settings in one button, so its kind of a toggle. Can someone help me with this?

Thanks in advance.

UPDATED CODE

   //Flash Button
    final Button flashButton = (Button) findViewById(id.camera_flash);
    flashButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Parameters p = mCamera.getParameters();

            // TODO Auto-generated method stub
            if(p.getFlashMode() == android.hardware.Camera.Parameters.FLASH_MODE_ON){
                p.setFlashMode(Parameters.FLASH_MODE_OFF);
                mCamera.setParameters(p);
                mCamera.startPreview();
                flashButton.setText("Off");
                Log.e("Torch","MODE OFF");

            }else if(p.getFlashMode() == android.hardware.Camera.Parameters.FLASH_MODE_OFF){
                p.setFlashMode(Parameters.FLASH_MODE_TORCH);
                mCamera.setParameters(p);
                mCamera.release();
                mCamera=null;
                flashButton.setText("TORCH");
                Log.e("Torch","MODE TORCH");

            }else if(p.getFlashMode() == android.hardware.Camera.Parameters.FLASH_MODE_AUTO){
                p.setFlashMode(Parameters.FLASH_MODE_ON);
                mCamera.setParameters(p);
                mCamera.startPreview();
                flashButton.setText("ON");
                Log.e("Torch","MODE ON");

            }else if(p.getFlashMode() == android.hardware.Camera.Parameters.FLASH_MODE_TORCH){
                p.setFlashMode(Parameters.FLASH_MODE_ON);
                mCamera.setParameters(p);
                mCamera.startPreview();
                flashButton.setText("AUTO");
                Log.e("Torch","MODE AUTO");

            }else{
                p.setFlashMode(Parameters.FLASH_MODE_AUTO);
                mCamera.setParameters(p);
                mCamera.startPreview();
                flashButton.setText("AUTO");
                Log.e("Torch","MODE AUTO");

            }



        }

Answer 1

You can check if flash is AUTO, ON, or OFF as:

Camera.Parameters p= mCamera.getParameters();

if(p.getFlashMode().equals(android.hardware.Camera.Parameters.FLASH_MODE_ON))
{
 //DO STUFF...
}
else if(p.getFlashMode().equals(android.hardware.Camera.Parameters.FLASH_MODE_OFF))
{
//DO STUFF......
}
else if(p.getFlashMode().equals(android.hardware.Camera.Parameters.FLASH_MODE_TORCH))
{
//DO STUFF......
}
else if(p.getFlashMode().equals(android.hardware.Camera.Parameters.FLASH_MODE_AUTO))
{
//DO STUFF......
}
else
{
//DO STUFF.....
}