viewWithTag UIButton不能在tableview上工作reloadData

-2

我正在構建一個調查應用程序，其中包含一個顯示問題的表格視圖。一些行具有文本字段，一些具有滑塊，一些具有5個按鈕供用戶選擇他們的答案。viewWithTag UIButton不能在tableview上工作reloadData

我可以設置初始UIButton的值很好，具有多個按鈕單元格，每個按鈕都可以設置其標題。但是，當我更改數據模型並重新加載tableview時，第一行（0）起作用，但第二行（1）不起作用。 button1.tag爲第二行返回0。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
//UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cell forIndexPath:indexPath]; 

NSString *subCatKey = [NSString stringWithFormat:@"%ld", indexPath.row]; 
NSDictionary *thisSubCat = [_subCatListDict objectForKey:subCatKey]; 

NSString *defaultResponse = @""; 

static NSString *CellIdentifier; 
    CellIdentifier = @"buttonCell"; 

UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
UIButton *button1 = [[UIButton alloc] init]; 
UIButton *button2 = [[UIButton alloc] init]; 
UIButton *button3 = [[UIButton alloc] init]; 
UIButton *button4 = [[UIButton alloc] init]; 
UIButton *button5 = [[UIButton alloc] init]; 

NSLog(@"Button 1::%ld",(long)button1.tag); 

// - 4 = Button range 
NSLog(@"Setting up the button cell"); 

NSArray *buttonResponses = [[NSArray alloc] initWithArray:[thisSubCat objectForKey:@"responses"]]; 

[buttonResponses objectAtIndex:0]; 

if(cell == nil) 
{ 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; 
} 

NSLog(@"Button tag 1::%ld",(long)button1.tag); 
if (button1.tag == 0) { 
    NSLog(@"Setting buttons..."); 
    button1 = (UIButton *)[cell viewWithTag:41]; 
    NSLog(@"Button tag 1::%ld",(long)button1.tag); 
    button2 = (UIButton *)[cell viewWithTag:42]; 
    button3 = (UIButton *)[cell viewWithTag:43]; 
    button4 = (UIButton *)[cell viewWithTag:44]; 
    button5 = (UIButton *)[cell viewWithTag:45]; 
    [button1 setTitle:[buttonResponses objectAtIndex:0] forState:UIControlStateNormal]; 
    [button2 setTitle:[buttonResponses objectAtIndex:1] forState:UIControlStateNormal]; 
    [button3 setTitle:[buttonResponses objectAtIndex:2] forState:UIControlStateNormal]; 
    [button4 setTitle:[buttonResponses objectAtIndex:3] forState:UIControlStateNormal]; 
    [button5 setTitle:[buttonResponses objectAtIndex:4] forState:UIControlStateNormal]; 

    [button1 addTarget:self 
       action:@selector(rowButtonSelect:) 
     forControlEvents:UIControlEventTouchUpInside]; 
    [button2 addTarget:self 
       action:@selector(rowButtonSelect:) 
     forControlEvents:UIControlEventTouchUpInside]; 
    [button3 addTarget:self 
       action:@selector(rowButtonSelect:) 
     forControlEvents:UIControlEventTouchUpInside]; 
    [button4 addTarget:self 
       action:@selector(rowButtonSelect:) 
     forControlEvents:UIControlEventTouchUpInside]; 
    [button5 addTarget:self 
       action:@selector(rowButtonSelect:) 
     forControlEvents:UIControlEventTouchUpInside]; 
} 


UILabel *questionLabel = (UILabel *)[cell viewWithTag:301]; 
questionLabel.text = [thisSubCat objectForKey:@"question"]; 

UILabel *questionResponses = (UILabel *)[cell viewWithTag:302]; 
questionResponses.text = defaultResponse; 
NSLog(@"Default response:%@",defaultResponse); 


return cell;

}

來源

2016-03-11 jreynolds

嘗試刪除if（button1.tag == 0）條件，或者在條件變爲false時添加else部分。願這能幫助你。 –

您創建該按鈕，然後檢查其標籤。當然標籤值是零 - 這是它的默認值。目前尚不清楚你在這裏做什麼。此外，這是一個陳腐的方式來設置細胞。 – AMayes

@ Dev.RK我添加了if（button1.tag == 0），因爲表從不滾動，它們不應該被重用。最初，我沒有這個，但是我認爲如果單元格沒有被重用，我會嘗試跳過它。 – jreynolds

你總是建立在電池新按鈕，它的默認標籤= 0，這樣

NSLog(@"Button tag 1::%ld",(long)button1.tag);

將打印按鈕標籤1 :: 0

設置

button1.tag indexpath.raw;

並嘗試

來源

2016-03-11 12:19:12

對，真正的測試是：button1 =（UIButton *）[cell viewWithTag：41];在reloadData之後，在第二個單元格（第一行）button1.tag仍然是0，儘管第0行單元格中的button1等於41，就像它應該是。 – jreynolds

viewWithTag UIButton不能在tableview上工作reloadData

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