public class MainActivity extends Activity {

Button button;
ImageView imageView;
static final int CAM_REQUEST = 1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    button = (Button) findViewById(R.id.CameraButton);
    imageView = (ImageView)findViewById(R.id.Image_view);
    button.setOnClickListener(new View.OnClickListener() {

@Override
            public void  onClick(View v) {
        Intent camera_intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        File file = getfile();
                camera_intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
                startActivityForResult(camera_intent, CAM_REQUEST);
            }
        });
    }

private File getfile()
{

    File folder = new File("=sdcard/Camera_App");

    if(!folder.exists()) //CHECKS FOR FOLDER
    {
        folder.mkdir();  //IF NO FOLDER IT CREATES FOLDER
    }

    File image_file = new File(folder, "Image.jpg");
    return image_file;
}

@Override
protected void onActivityResult (int requestCode, int resultCode, Intent data) {
String path = "sdcard/Camera_App/Image.jpg";
    imageView.setImageDrawable(Drawable.createFromPath(path));

}


}