如何修改 UISearchbar 的 UITextField 左边的放大镜

UITextField* searchField = nil;

for (UIView* subview in_searchBar.subviews) {

if ([subview isKindOfClass:[UITextFieldclass]]) {

searchField = (UITextField*)subview;

break;

}

}

if (searchField) {

//searchField.frame = CGRectMake(0, 0, 50, 50);

UIImage *image = [UIImageimageNamed: @"searchIcon"];

UIImageView *iView = [[UIImageViewalloc] initWithImage:image];

iView.frame = CGRectMake(0, 0, image.size.width , image.size.height);

UIView *myview = [[UIViewalloc]initWithFrame:CGRectMake(0, 0, 40 , 60)];

searchField.leftView = myview;

}