如何在 UITextView 中显示 JSON 数组数据

Question

JSON 视图

//url data

{   "status": {  
"mission_id": "6",  
"mission": " Mission:<\/strong> <\/em><\/h1>\r\n\r\n     The mission of the Greater Fort Wayne Hispanic Chamber of Commerce is to advocate, promote, and facilitate the success of Hispanic-owned businesses which will fully participate in the growth, development and education of Allen and surrounding counties. \r\n    \r\n     In addition, the Chamber strives to focus on the most effective and coordinated Hispanic business development efforts maximizing public and private sector involvement.
  }
}

我的代码

 - (void)viewDidLoad  {   
[super viewDidLoad];

NSURLRequest *req=[[NSURLRequest alloc]initWithURL:[NSURL URLWithString:@"http://edutimeapp.com/toshow/chamber-of-commerc/ws/fetch_mission.php"]];            
 response =[[NSMutableData alloc]init];
[NSURLConnection connectionWithRequest:req delegate:self];


[self.textmission setText: textarray];   //textaray NSArray object name and textmission is UITextView outlet name.     


_textmission.scrollEnabled = YES;      


 self.textmission.editable = NO;
}

连接

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data    
{    
[response appendData:data];    
NSLog(@"error receving data %@",response);    
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response    
{
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{    
NSError *error;

NSLog(@"Error in receiving data %@",error);
NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves  error:&error];
NSLog(@"response data %@",json);

NSArray* results = [json objectForKey:@"status"];
textarray = [results valueForKey:@"mission"];
}

Answer 1

使用下面的代码，

YourTextViewName.text = [self convertHtmlPlainText:[[json objectForKey:@"status"] valueForKey:@"mission"]];

将 HTML 转换为普通字符串：

-(NSString*)convertHtmlPlainText:(NSString*)HTMLString{
    NSData *HTMLData = [HTMLString dataUsingEncoding:NSUTF8StringEncoding];
    NSAttributedString *attrString = [[NSAttributedString alloc] initWithData:HTMLData options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType} documentAttributes:NULL error:NULL];
    NSString *plainString = attrString.string;
    return plainString;
}

希望对你有帮助

Answer 2

您必须首先使用我使用过的属性字符串来删除 html 内容

NSString *htmlString = [[[ResponseNotification objectForKey:@"notifs"] objectAtIndex:indexPath.row] valueForKey:@"content"];
    NSLog(@"%@",htmlString);

    NSMutableAttributedString *newStr = [[NSMutableAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType } documentAttributes:nil error:nil];
    [newStr addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"HelveticaNeue-Medium" size:12.0] range:NSMakeRange(0, [newStr length])];
    [newStr addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(0, [newStr length])];