UITextView

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//将文本视图附加到一个已有的试图对象上-(void)loadView{    [super loadView];    CGRect viewRect = CGRectMake(0, 100, 320, 200);        UITextView *textView = [[UITextView alloc] initWithFrame:viewRect];        //颜色    UIColor *myColorHue = [UIColorcolorWithHue:120.0/360.0saturation:0.75brightness:0.50alpha:1.0];    //    UIColor *myColorRGB = [UIColor colorWithRed:0.75 green:1.0 blue:0.75 alpha:1.0];    //    UIColor *myWhiteTransparentColor = [UIColor colorWithWhite:1.0 alpha:0.50];    //    UIColor *myColor = [UIColor redColor];     textView.textColor = myColorHue;        //字体与大小    UIFont *myFixed = [UIFont fontWithName:@"Courier New" size:10.0];    //    UIFont *mySystemFont = [UIFont systemFontOfSize:12.0];    //    UIFont *myBoldSystemFont = [UIFont boldSystemFontOfSize:12.0];    //    UIFont *myItalicSystemFont = [UIFont italicSystemFontOfSize:12.0];    textView.font = myFixed;        textView.editable = NO;  //设置为不可编辑，默认的为可编辑        //赋予内容    textView.text = @"hello .bit hold ";        //分别为左中右对齐    textView.textAlignment = UITextAlignmentLeft;    //    textView.textAlignment = UITextAlignmentCenter;    //    textView.textAlignment = UITextAlignmentRight;        //直接赋值    int nBottles = 100;    NSString *myFormattedString = [[NSString alloc]initWithFormat:@"%d bottles of beer on the wall",nBottles];    textView.text = myFormattedString;        //读取文件    //    NSString *myFile = [NSHomeDirectory() stringByAppendingPathComponent:@"Document/file.txt"];    //    NSString *myFileString = [NSString stringWithContentsOfFile:myFile encoding:nil error:nil];    //    textView.text = myFileString;        //键盘属性    textView.keyboardType = UIKeyboardTypePhonePad; //键盘风格，8种    textView.keyboardAppearance = UIKeyboardAppearanceAlert; //键盘外观，两种：浅灰色或深灰色    textView.returnKeyType = UIReturnKeyGo; //回车键的风格 11种    textView.autocapitalizationType = UITextAutocapitalizationTypeNone;//自动大写功能 4种    textView.autocorrectionType = UITextAutocorrectionTypeDefault;  //自动更正    textView.secureTextEntry = YES; //安全文本输入，即输入后会显示＊号        [self.view addSubview:textView];}

UITextView协议：

//点击开始编辑：
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView;
- (void)textViewDidBeginEditing:(UITextView *)textView;

//结束编辑

- (BOOL)textViewShouldEndEditing:(UITextView *)textView;

- (void)textViewDidEndEditing:(UITextView *)textView;

//更改内容
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text;
- (void)textViewDidChange:(UITextView *)textView;

- (void)textViewDidChangeSelection:(UITextView *)textView;

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