如何在用户点击完成按钮后更改UIButton的图像是iOS中的另一个UIView [英] How to change image for UIButton after user click on Done button is another UIView in iOS

问题描述

当用户在tableview上点击 UIButton 时（tableview在每行中有多个按钮），将显示另一个View。
我想在用户点击其他UIView的完成按钮后更改此按钮的图像。我怎样才能做到这一点？我是新手。你能为我提供一些代码吗？在此先感谢。

When the user clicks on a UIButton on tableview ( tableview has mutiple button in each row), another View is shown. I want to change image for this button after the user has clicked on the Done button of the other UIView. How can I do that? I'm a newbie. Could you please provide some code for me? Thanks in advance.

更新代码：

桌面视图代码：

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *CellIdentifier = [NSString stringWithFormat:@"%d,%d",indexPath.section,indexPath.row];

    UITableViewCell *cell = [_tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

        UIButton *market = [UIButton buttonWithType:UIButtonTypeCustom];
        [market addTarget:self action:@selector(marketPressedAction:) forControlEvents:UIControlEventTouchDown];

        [market setTag:3000];
        [market setFrame:CGRectMake(200, 6, 30, 30)];
        [cell.contentView addSubview:market];

    }

   for (UIButton *button in [cell subviews]) { // change name of table here
    if ([button isKindOfClass:[UIButton class]]) {
        button.tag = indexPath.row;
        [button setImage:[UIImage imageNamed:@"Marketplace.png"] forState:UIControlStateNormal];
    }
}


    cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
    _tableView.contentInset = UIEdgeInsetsMake(0, 0, 100, 0);

    return cell;
}

打开按钮代码（用户点击显示另一个视图的按钮）

Code for Open button ( button that user click on to show another View)

    - (void)marketPressedAction:(id)sender
{

    UIButton *button = (UIButton *)sender;
    buttontag = button.tag;
    NSLog(@"Market button click at row %d",buttontag);
}

完成按钮的代码：

 -(void)submitMarket
{
    for (UIButton *button in [_tableView subviews]) { // change name of table here
        if ([button isKindOfClass:[UIButton class]]) {
            if (button.tag == buttontag) {
                [button setBackgroundImage:[UIImage imageNamed:@"MarketplaceSelect.png"] forState:UIControlStateNormal];
            } 
        } 
    }
}

推荐答案

试试这个：

[yourButton setBackgroundImage:someImge forState:UIControlStateNormal];

按钮点击代码：

 savedTag = button.tag;

完成代码按钮点击：

for (UIButton *button in [table subviews]) { // change name of table here 
  if ([button isKindOfClass:[UIButton class]]) { 
    if (button.tag == savedtag) { 
       [button setBackgroundImage:someImge forState:UIControlStateNormal];
    } 
  } 
}

在cellForRowAtIndexPath中代替： [market setTag：3000]; 写 [market setTag：indexPath.row];

In cellForRowAtIndexPath in place of this : [market setTag:3000]; write [market setTag:indexPath.row];

试试这个：

替换：

marketButton = (UIButton *)[cell.contentView viewWithTag:3000];
[marketButton setTag:indexPath.row];

这个：

for (UIButton *button in [cell subviews]) { // change name of table here
     if ([button isKindOfClass:[UIButton class]]) {
         button.tag == indexPath.row; 
     }
}

还有一件事：将第一行的cellForRowAtIndexPath设为：

One more thing : make first line of cellForRowAtIndexPath as :

NSString * CellIdentifier = @tableCell;

将您的cellForRowAtIndexPath更改为：

Change your cellForRowAtIndexPath as :

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *CellIdentifier = @"cell";

    UITableViewCell *cell = [_tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

        UIButton *market = [UIButton buttonWithType:UIButtonTypeCustom];
        [market addTarget:self action:@selector(marketPressedAction:) forControlEvents:UIControlEventTouchDown];

        [market setImage:[UIImage imageNamed:@"Marketplace.png"] forState:UIControlStateNormal];

        [market setTag:indexPath.row];
        [market setFrame:CGRectMake(200, 6, 30, 30)];
        [cell.contentView addSubview:market];

    }

    else {

       for (UIButton *button in [cell subviews]) { // change name of table here
         if ([button isKindOfClass:[UIButton class]]) {
            button.tag = indexPath.row;
         }
    }
}


    cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
    _tableView.contentInset = UIEdgeInsetsMake(0, 0, 100, 0);

    return cell;
}

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