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

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二 代理方法

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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.

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三 TextField的重绘

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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.

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