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[操作系统]【代码笔记】点评内容


一,效果图。

二,工程图。

三,代码。

ViewController.h

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#import <UIKit/UIKit.h>@interface ViewController : UIViewController<UITextViewDelegate>{  //评论内容  UITextView *commentTextView;}@end
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ViewController.m

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#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {  [super viewDidLoad];  // Do any additional setup after loading the view, typically from a nib.    //初始化点评内容  [self addCommentView];  }#pragma -mark -functions//初始化点评内容-(void)addCommentView{  //点评内容  commentTextView=[[UITextView alloc]initWithFrame:CGRectMake(50, 180, 300, 90)];  commentTextView.text=@"亲,您对商户感觉如何,环境怎样,服务态度如何。(500字符内)";  commentTextView.font=[UIFont systemFontOfSize:14];  commentTextView.backgroundColor=[UIColor redColor];  commentTextView.delegate=self;  [self.view addSubview:commentTextView];}#pragma mark - UITextView Delegate Methods-(BOOL)textViewShouldBeginEditing:(UITextView *)textView{  if ([textView.text isEqualToString:@"亲,您对商户感觉如何,环境怎样,服务态度如何。(500字符内)"]) {    textView.text=@"";  }  return YES;}-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{    if ([text isEqualToString:@"\n"]) {    [textView resignFirstResponder];    return NO;  }  return YES;}- (void)didReceiveMemoryWarning {  [super didReceiveMemoryWarning];  // Dispose of any resources that can be recreated.}
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