iOS小知识点记录
1>UITextField实现leftView:
self.inputTextField = [[UITextField alloc]initWithFrame:CGRectMake(10, 10, 200, 25)];self.inputTextField.delegate = self;self.inputTextField.font = [UIFont systemFontOfSize:15];self.inputTextField.placeholder = @" 想说点什么?";// 设置textField显示图标UIView *placeHolderView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 20, 30)];UIImageView *icon = [[UIImageView alloc]initWithFrame:CGRectMake(5, 7, 15, 15)];icon.backgroundColor = [UIColor redColor]; // 这里我只是设置了颜色,你改成图片就行[placeHolderView addSubview:icon];self.inputTextField.leftView = placeHolderView;self.inputTextField.leftViewMode = UITextFieldViewModeAlways;self.inputTextField.backgroundColor = [UIColor whiteColor];[self addSubview:_inputTextField];