场景：
1.父视图添加了左划手势，触发返回方法
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self
action:@selector(statusBack)];
[self.view addGestureRecognizer:panGesture];
2.子视图添加了UIButton
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setBackgroundColor:[UIColor colorWithHexString:@"12aaff"]];
[button setTitle:NSLocalizedString(@"creat_wallet_confirm", nil) forState:UIControlStateNormal];
[button setTitleColor:MOWhiteColor forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont systemFontOfSize:16]];
button.layer.masksToBounds = YES;
button.layer.cornerRadius = 3;
[button addTarget:self action:@selector(sureAction:) forControlEvents:UIControlEventTouchUpInside];
[bottomView addSubview:button];
出现的结果bug：
每次点击确认按钮的时候，会触发左划手势，导致手势和触发方法同时运行，pop出当前页面。
解决方法：
当前页面添加 UIGestureRecognizerDelegate 声明
panGesture.delegate = self
#pragma mark - UIGestureRecognizer delegate -
/*- 解决左划手势和确认按钮冲突bug -*/
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
// 若为UIButton
if ([NSStringFromClass([touch.view class]) isEqualToString:@"UIButton"]) {
// UIButton 不需要响应 父视图的手势，保证出发方法 可以正常
return NO;
}
//默认都需要响应
return YES;
}
