How to apply camera feature without moving to use photo and retake in iOS?

Question

I stuck to apply square focus in UIImage picker controller and how to stay on camera page without moving to another page same like below screen. please help me. I tried to implement in custom overlay for this but in square focus not coming.

Answer 1

在我的UIImagePickerController中，首先不显示正方形，但是当我点击屏幕时，正方形会显示出来。

Answer 2

download the above image(ask your designer to give you better image) and add to your project.

add this code while creating imagepicker

 UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(createAutoFocus)];
                [overlayView addGestureRecognizer:tap];//overlayview is your custom overlay

then add this method in your class

-(void)createAutoFocus{

    // NSLog(@"click");
 CGPoint touchPoint=[recognizer locationInView:overlayView];//overlayview is your custom overlay
    // NSLog(@"%@", NSStringFromCGPoint(touchPoint));
    UIImageView *imgViewFocus = [[UIImageView alloc] initWithFrame:CGRectMake(touchPoint.x, touchPoint.y, 80, 80)];
    imgViewFocus.image = [UIImage imageNamed:@"focus.png"];
    imgViewFocus.alpha = 0.8;
    [overlayView addSubview:imgViewFocus];
    [imagePickerCustom setCameraOverlayView:overlayView];//your customimagepicker
    [imgViewFocus performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:0.5];

}

Let me know if you have any issues.