如何从标题视图中隐藏或删除UIbutton

Question

I have a button in headerview of my tableview, its woking fine as well, but problem i am having is: When I want to hide that button on click of another button. How can I achieve this? I have already tried [deletebutton removeFromSuperview];

where deleteButton is my buttons name.

Here is what I am doing

-(void)PutTableinEditMode{

DeleteButton=[UIButton buttonWithType:UIButtonTypeCustom]; DeleteButton.frame=CGRectMake(10,1, 65, 25); [DeleteButton setTitle:@"Delete" forState:UIControlStateNormal]; DeleteButton.backgroundColor=[UIColor clearColor]; [DeleteButton addTarget:self action:@selector(DeleteMultipleToDos) forControlEvents:UIControlEventTouchUpInside]; [headerView addSubview:DeleteButton];

DeleteButton=[UIButton buttonWithType:UIButtonTypeCustom]; DeleteButton.frame=CGRectMake(10,1, 65, 25); [DeleteButton setTitle:@"Delete" forState:UIControlStateNormal]; DeleteButton.backgroundColor=[UIColor clearColor]; [DeleteButton addTarget:self action:@selector(DeleteMultipleToDos) forControlEvents:UIControlEventTouchUpInside]; [headerView addSubview:DeleteButton];

DeleteButton=[UIButton buttonWithType:UIButtonTypeCustom]; DeleteButton.frame=CGRectMake(10,1, 65, 25); [DeleteButton setTitle:@"Delete" forState:UIControlStateNormal]; DeleteButton.backgroundColor=[UIColor clearColor]; [DeleteButton addTarget:self action:@selector(DeleteMultipleToDos) forControlEvents:UIControlEventTouchUpInside]; [headerView addSubview:DeleteButton];

DeleteButton=[UIButton buttonWithType:UIButtonTypeCustom]; DeleteButton.frame=CGRectMake(10,1, 65, 25); [DeleteButton setTitle:@"Delete" forState:UIControlStateNormal]; DeleteButton.backgroundColor=[UIColor clearColor]; [DeleteButton addTarget:self action:@selector(DeleteMultipleToDos) forControlEvents:UIControlEventTouchUpInside]; [headerView addSubview:DeleteButton];

DeleteButton=[UIButton buttonWithType:UIButtonTypeCustom]; DeleteButton.frame=CGRectMake(10,1, 65, 25); [DeleteButton setTitle:@"Delete" forState:UIControlStateNormal]; DeleteButton.backgroundColor=[UIColor clearColor]; [DeleteButton addTarget:self action:@selector(DeleteMultipleToDos) forControlEvents:UIControlEventTouchUpInside]; [headerView addSubview:DeleteButton];

DeleteButton=[UIButton buttonWithType:UIButtonTypeCustom]; DeleteButton.frame=CGRectMake(10,1, 65, 25); [DeleteButton setTitle:@"Delete" forState:UIControlStateNormal]; DeleteButton.backgroundColor=[UIColor clearColor]; [DeleteButton addTarget:self action:@selector(DeleteMultipleToDos) forControlEvents:UIControlEventTouchUpInside]; [headerView addSubview:DeleteButton];

}

Then I m having another function as below from where i want to hide this DeleteButton

-(void)DoneEditing {

 DeleteButton.hidden=YES; [DeleteButton removeFromSuperview]; 

}

Answer 1

deletebutton.hidden = YES

Answer 2

if any of those two solution ( removeFromSuperview and hidden ) do not work, then you certainly don't have the right reference to your button. I guess your using nib files to define your views ? Then be sure the member deleteButton is well "linked" to the actual button. (ie verify using debug that your deleteButton var is not null)

Answer 3

您可以尝试更改该按钮的文本，因为我正在考虑向nil对象发送消息。

Answer 4

I got the it working actually [DeleteButton removeFromSuperView] is working .. problem was that the first method PutTableinEditMode was being called from somewhere else also, so i simply took a bool variable and on basis of its value added and removed the delete button :)

Thanks guys for helping though :) Ifeel so stupid to make such a silly mistake :)