UITextField的常用属性,Delegate,重绘

    UITextField * myTextField = [[UITextField alloc] initWithFrame:CGRectMake(50, 100, 200, 50)];    myTextField.backgroundColor = [UIColor clearColor];    //简单设置textField的边缘样式    myTextField.borderStyle = UITextBorderStyleRoundedRect;    //占位显示的内容(水印)    myTextField.placeholder = @"请输入姓名";    //对齐模式    myTextField.textAlignment = NSTextAlignmentLeft;    //显示清除按钮的模式    myTextField.clearButtonMode = UITextFieldViewModeWhileEditing;//    设置背景图//    myTextField.disabledBackground//    每次输入字符变成点.常用于密码输入//    myTextField.secureTextEntry = YES;    //再次编辑就清空//    text.clearsOnBeginEditing = YES;    //设置键盘的样式//    text.keyboardType = UIKeyboardTypeNumberPad;    //首字母是否大写//    text.autocapitalizationType = UITextAutocapitalizationTypeNone;    //return键变成什么键//    text.returnKeyType =UIReturnKeyDone;    //键盘外观//    textView.keyboardAppearance=UIKeyboardAppearanceDefault；    //按return键键盘往下收//    becomeFirstResponder                //    UIView* view1 = [[UIView alloc]initWithFrame:CGRectMake(0,0,40,0)];//    UIImageView * imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"music.png"]];//    imageView.frame = CGRectMake(0,0,40,40);//    UIImageView * imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];//    imageView.image = [UIImage imageNamed:@"music.png"];                            //左视图,视图可以是UIView下的任意视图.//    myTextField.leftView = imageView;    //左视图的显示模式//    myTextField.leftViewMode = UITextFieldViewModeAlways;    //右视图//    myTextField.rightView    //右视图显示模式//    myTextField.rightViewMode

二 代理方法

遵守TextField代理后.myTextField.delegate = self;

才能使用它的代理方法;在此就不多做说明.

三 TextField的重绘

在实际开发中,通常重写leftViewRectForBounds方法.并设置leftView,leftViewMode属性,来实现避免输入的内容顶格显示的问题.