UITextField、UITextView、UIWebViewd

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文本框UITextField

//文本框 UITextField

self.aTFiled = [[[UITextFieldalloc] initWithFrame:CGRectMake(35, 100, 250, 30)]autorelease];

self.aTFiled.placeholder =@"输入查找关键字...";//设置引导字符串

self.aTFiled.clearButtonMode =UITextFieldViewModeWhileEditing;//设置清除按钮显示方式

self.aTFiled.textColor = [UIColorblueColor];//设置文本颜色

self.aTFiled.textAlignment =NSTextAlignmentLeft;//设置文本对齐方式

self.aTFiled.font = [UIFontsystemFontOfSize:16];//设置文本字体

self.aTFiled.backgroundColor = [UIColoryellowColor];//设置背景色

self.aTFiled.delegate =self;//委托代理

[self.aTFiledbecomeFirstResponder];//设置为第一响应

[selfaddSubview:self.aTFiled];

self.aTFiled.background = [UIImageimageNamed:@"beautiful.jpg"];//设置背景图

self.aTFiled.returnKeyType =UIReturnKeyGo;//设置return键样式

self.aTFiled.secureTextEntry =YES;//设置密码保护模式输入,默认为NO

self.aTFiled.keyboardType =UIKeyboardTypePhonePad;//设置键盘类型

//设置左边显示的图片

UIImageView *leftView = [[UIImageViewalloc] initWithFrame:CGRectMake(0, 0, 30, 30)];

leftView.image = [UIImageimageNamed:@"akgo"];

self.aTFiled.leftView = leftView;

self.aTFiled.leftViewMode =UITextFieldViewModeAlways;//设置图片显示方式

[leftView release];

//设置右边显示的图片

UIImageView *rightView = [[UIImageViewalloc] initWithFrame:CGRectMake(0, 0, 30, 30)];

rightView.image = [UIImageimageNamed:@"akgo"];

self.aTFiled.rightView = rightView;

self.aTFiled.rightViewMode =UITextFieldViewModeUnlessEditing;//设置图片显示方式

[rightView release];

//文本框委托代理

#pragma mark - UITextFieldDelegate

//输入开始时调用

- (void)textFieldDidBeginEditing:(UITextField *)textField

{

NSLog(@"开始输入...");

}

//输入结束时调用

- (void)textFieldDidEndEditing:(UITextField *)textField

{

NSLog(@"输入结束...");

}

//文本改变时调用

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

{

NSLog(@"%@", textField.text);//文本变化内容

return YES;

}

//点击了clear键时调用

- (BOOL)textFieldShouldClear:(UITextField *)textField

{

NSLog(@"clear button被点击了...");

return YES;

}

//点击return键时调用的方法

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

NSLog(@"return键点击了...");

[textField resignFirstResponder];//辞去第一响应

return YES;

}

文本视图UITextView

//UITextView 文本视图

self.aTView = [[[UITextViewalloc] initWithFrame:CGRectMake(50, 100, 220, 160)]autorelease];

self.aTView.backgroundColor = [UIColorgrayColor];//设置背景

self.aTView.textColor = [UIColorblueColor];//设置文本颜色

self.aTView.textAlignment =NSTextAlignmentLeft;//设置文本对齐方式

self.aTView.font = [UIFontsystemFontOfSize:16];//设置文本字体

self.aTView.delegate =self;//委托代理

self.aTView.keyboardType =UIKeyboardTypeDefault;//设置键盘显示方式

self.aTView.returnKeyType =UIReturnKeySend;//设置return键类型

self.aTView.bounces =YES;//设置边界是否反弹

[self.aTViewbecomeFirstResponder];//设置为第一响应

[selfaddSubview:self.aTView];

//设置输入视图

UIImageView *imageView = [[UIImageViewalloc] initWithFrame:CGRectMake(0, 0,self.bounds.size.width, 216)];

imageView.image = [UIImageimageNamed:@"akgo"];//除了格式为png以外的图片格式都必须写全名

self.aTView.inputView = imageView;//设置输入视图

[imageView release];

//设置输入附属视图

UIView *aView = [[UIViewalloc] initWithFrame:CGRectMake(0, 0,self.bounds.size.width, 44)];

aView.backgroundColor = [UIColorcolorWithRed:0.0 green:0.0blue:0.0 alpha:0.7];

UIButton *button = [UIButtonbuttonWithType:UIButtonTypeCustom];

[button setTitle:@"点击"forState:UIControlStateNormal];

[button setTitleColor:[UIColororangeColor] forState:UIControlStateNormal];

button.frame = CGRectMake(self.bounds.size.width-70, 0, 60, 44);

[button addTarget:selfaction:@selector(buttonClicked)forControlEvents:UIControlEventTouchUpInside];

[aView addSubview:button];

self.aTView.inputAccessoryView = aView;//设置输入附属视图

[aView release];

- (void)buttonClicked

{

self.aTView.text = @"～～～点击了～～～";

[self.aTViewresignFirstResponder];//辞去第一响应

}

//文本视图委托代理

#pragma mark - UITextViewDelegate

- (void)textViewDidBeginEditing:(UITextView *)textView

{

NSLog(@"已经开始输入了...");

}

- (void)textViewDidEndEditing:(UITextView *)textView

{

NSLog(@"已经结束输入了...");

}

//文本内容变化时调用

- (void)textViewDidChange:(UITextView *)textView

{

NSString *str = textView.text;//文本内容变化时调用

NSLog(@"%@", str);

}

//点击return键或delete键时调用

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text

{

//如果点击了return键，则收起键盘

if ([text isEqualToString:@"\n"])

{

NSLog(@"return键点击了");

[textView resignFirstResponder];//辞去第一响应

}

//如果点击了delete键

if ([text isEqualToString:@""])

{

NSLog(@"delete键点击了");

}

return YES;

}

网页视图UIWebView

主要用于加载网页（网络的、本地的）、pdf、doc、excel、ppt、gif、mp3音频文件、mp4视频文件等格式的文件。

//网页视图 UIWebView

self.webView = [[[UIWebViewalloc] initWithFrame:CGRectMake(0, 50, 320,self.bounds.size.height-50)]autorelease];

self.webView.delegate =self;//设置委托代理

NSURLRequest *requestURL = [NSURLRequestrequestWithURL:[NSURLURLWithString:@"http://www.hao123.com"]];//加载网络网页

[self.webViewloadRequest:requestURL];//加载网页

[selfaddSubview:self.webView];

// return;

//做一个简单浏览器

//向后按钮

UIButton *backBtn = [UIButtonbuttonWithType:UIButtonTypeCustom];

backBtn.tag = 666;

[backBtn setBackgroundImage:[UIImageimageNamed:@"back.jpg"]forState:UIControlStateNormal];

backBtn.frame = CGRectMake(10, 20, 30, 30);

[backBtn addTarget:selfaction:@selector(webButtonClicked:)forControlEvents:UIControlEventTouchUpInside];

[self addSubview:backBtn];

//向前按钮

UIButton *forwardBtn = [UIButtonbuttonWithType:UIButtonTypeCustom];

forwardBtn.tag = 777;

[forwardBtn setBackgroundImage:[UIImageimageNamed:@"forward.jpg"]forState:UIControlStateNormal];

forwardBtn.frame = CGRectMake(backBtn.frame.origin.x+backBtn.frame.size.width+5, backBtn.frame.origin.y,

backBtn.frame.size.width, backBtn.frame.size.height);

[forwardBtn addTarget:selfaction:@selector(webButtonClicked:)forControlEvents:UIControlEventTouchUpInside];

[self addSubview:forwardBtn];

//主页按钮

UIButton *homeBtn = [UIButtonbuttonWithType:UIButtonTypeCustom];

homeBtn.tag = 888;

[homeBtn setBackgroundImage:[UIImageimageNamed:@"home.jpg"]forState:UIControlStateNormal];

homeBtn.frame = CGRectMake(forwardBtn.frame.origin.x+forwardBtn.frame.size.width+5, forwardBtn.frame.origin.y,

forwardBtn.frame.size.width, forwardBtn.frame.size.height);

[homeBtn addTarget:selfaction:@selector(webButtonClicked:)forControlEvents:UIControlEventTouchUpInside];

[self addSubview:homeBtn];

// return;

//加载本地网页

NSString *htmlPath = [[NSBundlemainBundle] pathForResource:@"akgo"ofType:@"html"];

NSURL *htmlURL = [NSURLfileURLWithPath:htmlPath];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:htmlURL]];

//或者

NSData *data = [NSDatadataWithContentsOfFile:htmlPath];

NSString *info = [[NSStringalloc] initWithData:dataencoding:NSUTF8StringEncoding];

[self.webViewloadHTMLString:info baseURL:nil];//加载本地网页

[info release];

// return;

//加载pdf

NSString *pdfPath = [[NSBundlemainBundle]pathForResource:@"akgo"ofType:@"pdf"];

NSURL *pdfURL = [NSURLfileURLWithPath:pdfPath];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:pdfURL]];

// return;

//加载doc

NSString *docPath = [[NSBundlemainBundle]pathForResource:@"akgo"ofType:@"docx"];

NSURL *docURL = [NSURLfileURLWithPath:docPath];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:docURL]];

// return;

//加载excel

NSString *excelPath = [[NSBundlemainBundle]pathForResource:@"akgo"ofType:@"xls"];

NSURL *excelURL = [NSURLfileURLWithPath:excelPath];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:excelURL]];

// return;

// 加载ppt

NSString *pptPath = [[NSBundlemainBundle] pathForResource:@"akgo"ofType:@"pptx"];

NSURL *pptURL = [NSURLfileURLWithPath:pptPath];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:pptURL]];

// return;

//设置网页局部字体颜色及大小(范围：1~7)

NSString *htmlBody =@"<HTML>aaaakA \

oooo</HTML>";

[self.webViewloadHTMLString:htmlBody baseURL:nil];

// return;

//加载一组本地的gif动画

// for (int i = 0; i < 5; i++)

// {

// UIWebView *aWebView = [[[UIWebView alloc] initWithFrame:CGRectMake(i*48, 20, 48, 48)] autorelease];

// aWebView.scalesPageToFit = NO;//设置网页不自适应

// aWebView.scrollView.scrollEnabled = NO;//设置是否滚动

// [self addSubview:aWebView];

// //

// NSString *strContent = [NSString stringWithFormat:@"<img src=\"%d.gif\"/>", i];

// NSString *str = [[NSBundle mainBundle] bundlePath];

// NSURL *baseURL = [NSURL fileURLWithPath:str isDirectory:YES];

// [aWebView loadHTMLString:strContent baseURL:baseURL];

// }

// return;

//加载网络的gif动画

// NSString *content2 = @"<img src=\"http://bbs.winshang.com/Skins/Default/emot/em10.gif\"/>";

// NSString *strContent = [NSString stringWithFormat:@"%@", content2];

// self.webView.scalesPageToFit = NO;//设置网页不自适应

// [self.webView loadHTMLString:strContent baseURL:nil];

////

// return;

//加载本地音频

NSString *musicPath = [[NSBundlemainBundle] pathForResource:@"akgo"ofType:@"mp3"];

NSURL *musicURL = [NSURLfileURLWithPath:musicPath];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:musicURL]];

// return;

//加载本地或网络视频

NSString *movePath = [[NSBundlemainBundle] pathForResource:@"akgo"ofType:@"mp4"];

NSURL *moveURL = [NSURLfileURLWithPath:movePath];

// NSURL *netURL = [NSURL URLWithString:@"http://changshoulvyou.apphl.com/Upload/2013/9/29/8548234e-3ab2-49fb-a0ea-5304c3197e03.MP4"];

[self.webViewloadRequest:[NSURLRequestrequestWithURL:moveURL]];

}

/**

功能：测试网页向前，向后加载的按钮

参数：button

返回值：无

- (void)webButtonClicked:(UIButton*)webButton

{

if (666 == webButton.tag)

{

//向后的按钮点击了

if ([self.webViewcanGoBack])//是否能够向后加载

{

[self.webViewgoBack];//加载后一网页

}

if (777 == webButton.tag)

{

//向前的按钮点击了

if ([self.webViewcanGoForward])//是否能够向前加载

{

[self.webViewgoForward];//加载前一网页

}

if (888 == webButton.tag)

{

//主页按钮点击了

[self.webViewstopLoading];//停止网页的加载

//加载网页

NSURLRequest *requestURL = [NSURLRequestrequestWithURL:[NSURLURLWithString:@"http://www.hao123.com"]];

[self.webViewloadRequest:requestURL];

}

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