UIView *paddingView1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, 30)];
self.textFieldKeHuDanWei.leftView = paddingView1;
self.textFieldKeHuDanWei.leftViewMode = UITextFieldViewModeAlways;
需要注意的是,有几个textField就新建几个paddingView1。。。。。。。