我正在尝试发送电子邮件,例如在 uitableview 中选择所有功能,其中在同一按钮上点击用户可以选中或删除所有选中标记,另外用户还可以选择/取消选择行(在 didSelectRowAtIndexPath 上)。我试着做,但它不能正常工作,这是我的代码。
- (IBAction)selectAll:(id)sender
{
if(myBoolean)
{
for (NSInteger s = 0; s < self.iTable.numberOfSections; s++)
{
for (NSInteger r = 0; r < [self.iTable numberOfRowsInSection:s]; r++)
{
[[self.iTable cellForRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] setAccessoryType:UITableViewCellAccessoryNone];
}
}
myBoolean = NO;
[_selectUnselectButton setTitle:@"Select all Friends" forState:UIControlStateNormal];
}
else
{
for (NSInteger s = 0; s < self.iTable.numberOfSections; s++)
{
for (NSInteger r = 0; r < [self.iTable numberOfRowsInSection:s]; r++)
{
[[self.iTable cellForRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] setAccessoryType:UITableViewCellAccessoryCheckmark];
NSLog(@"%d-%d",s,r);
}
}
myBoolean = YES;
[_selectUnselectButton setTitle:@"Unselect all Friends" forState:UIControlStateNormal];
}
}
-(void)tableView:(UITableView *)tableView_ didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView_ cellForRowAtIndexPath:indexPath];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark)
{
cell.accessoryType = UITableViewCellAccessoryNone;
}
else
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}