UISwitch在UITableView单元格中 [英] UISwitch in a UITableView cell

问题描述

如何在 UITableView 单元格上嵌入 UISwitch ？

我现在的解决方案 $ p> UISwitch * mySwitch = [[[UISwitch alloc] init] autorelease];
cell.accessoryView = mySwitch;


解决方案

将其设置为accessoryView通常是。你可以在 tableView：cellForRowAtIndexPath：中设置它。你可能希望在翻转开关时使用target / action来做某事。像这样：

   - （UITableViewCell *）tableView：（UITableView *）tableView cellForRowAtIndexPath：（NSIndexPath *）indexPath {
 switch（[indexPath row]）{
 case MY_SWITCH_CELL：{
 UITableViewCell * aCell = [tableView dequeueReusableCellWithIdentifier：@SwitchCell]; 
 if（aCell == nil）{
 aCell = [[[UITableViewCell alloc] initWithFrame：CGRectZero reuseIdentifier：@SwitchCell] autorelease]; 
 aCell.textLabel.text = @我有一个开关; 
 aCell.selectionStyle = UITableViewCellSelectionStyleNone; 
 UISwitch * switchView = [[UISwitch alloc] initWithFrame：CGRectZero]; 
 aCell.accessoryView = switchView; 
 [switchView setOn：NO animated：NO]; 
 [switchView addTarget：self action：@selector（switchChanged :) forControlEvents：UIControlEventValueChanged]; 
 [switchView release]; 
} 
 return aCell; 
} 
 break; 
} 
 return nil; 
} 
 
  - （void）switchChanged：（id）sender {
 UISwitch * switchControl = sender; 
 NSLog（@开关是％@，switchControl.on？@ON：@OFF）; 
} 
  

How can I embed a UISwitch on a UITableView cell? Examples can be seen in the settings menu.

My current solution:

UISwitch *mySwitch = [[[UISwitch alloc] init] autorelease];
cell.accessoryView = mySwitch;

解决方案

Setting it as the accessoryView is usually the way to go. You can set it up in tableView:cellForRowAtIndexPath: You may want to use target/action to do something when the switch is flipped. Like so:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    switch( [indexPath row] ) {
        case MY_SWITCH_CELL: {
            UITableViewCell *aCell = [tableView dequeueReusableCellWithIdentifier:@"SwitchCell"];
            if( aCell == nil ) {
                aCell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"SwitchCell"] autorelease];
                aCell.textLabel.text = @"I Have A Switch";
                aCell.selectionStyle = UITableViewCellSelectionStyleNone;
                UISwitch *switchView = [[UISwitch alloc] initWithFrame:CGRectZero];
                aCell.accessoryView = switchView;
                [switchView setOn:NO animated:NO];
                [switchView addTarget:self action:@selector(switchChanged:) forControlEvents:UIControlEventValueChanged];
                [switchView release];
            }
            return aCell;
        }
        break;
    }
    return nil;
}

- (void)switchChanged:(id)sender {
    UISwitch *switchControl = sender;
    NSLog( @"The switch is %@", switchControl.on ? @"ON" : @"OFF" );
}

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