Which addTarget actions can we take on UITextView? - iphone

Question

I want to use addTarget:action on UITextView like on (UITextField or UIButton).
I want to call a method on UITextView.
please give some possible solution...
Thank You...
UITextView *TXT_First_Tag = [[UITextView alloc] initWithFrame:CGRectMake(5, textPosY, 350, 65)];
TXT_First_Tag.backgroundColor = [UIColor whiteColor];
TXT_First_Tag.font = [UIFont fontWithName:#"Arial-BoldMT" size:30.0];
TXT_First_Tag.editable =YES;
TXT_First_Tag.tag = i;
TXT_First_Tag.textColor = [UIColor blackColor];
[TXT_First_Tag addTarget:self action:#selector(C6Loop) forControlEvents:UIControlEventEditingDidEnd]; // This Line I want to use, it's working fine on textfield...
[scrollview addSubview:TXT_First_Tag];

Answer 1

We use UITextView delegate methods for this purpose.
Put this in your code.
UITextView *TXT_First_Tag = [[UITextView alloc] initWithFrame:CGRectMake(5, textPosY, 350, 65)];
TXT_First_Tag.backgroundColor = [UIColor whiteColor];
TXT_First_Tag.font = [UIFont fontWithName:#"Arial-BoldMT" size:30.0];
TXT_First_Tag.editable =YES;
TXT_First_Tag.delegate = self;
TXT_First_Tag.tag = i;
TXT_First_Tag.textColor = [UIColor blackColor];
[scrollview addSubview:TXT_First_Tag];
- (void)textViewDidBeginEditing:(UITextView *)textView{
NSLog(#"Begin editing");
}
- (void)textViewDidEndEditing:(UITextView *)textView{
NSLog(#"DidEndEditing");
}
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView{
NSLog(#"ShouldBeginEditing");
return TRUE;
}
- (BOOL)textViewShouldEndEditing:(UITextView *)textView{
NSLog(#"ShouldEndEditing");
return TRUE;
}

Answer 2

If your controller implements the UITextViewDelegate protocol, you can then set the controller as the text view's delegate in the controller's instance method, viewDidLoad():
yourTextView.delegate = self;
Then, if you want to perform a task before editing your text view, use:
-(void)textViewDidBeginEditing:(UITextView *)textView {}
And, if you want to do a task after editing your text view, use:
-(void)textViewDidEndEditing:(UITextView *)textView {}

Answer 3

Surely a better way of getting the "editing did end" message is by implementing the UITextViewDelegate?
TXT_First_Tag.delegate = self;
...
- (void)textViewDidEndEditing:(UITextView *)textView {
// stuff you'd put in C6Loop

Answer 4

Chaps,
Even though your responses did not directly solve my problem, it helped me narrow it down.
I have textviews in each cell and needed to pass which text view was being edited so I could update the database.
In a nutshell I set each textview tag in each cell to the indexpath.row. I then reference that cell in the delegate by textview.tag
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *MyIdentifier = #"MyIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil)
{
[[NSBundle mainBundle] loadNibNamed:#"frontCell" owner:self options:nil];
cell = mainPageCell;
self.mainPageCell = nil;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
UITextView *trackDetails;
trackDetails = (UITextView *)[cell viewWithTag:22];
trackDetails.text = [[myArray objectAtIndex:indexPath.row] objectAtIndex:0];
trackDetails.delegate = self;
trackDetails.tag = indexPath.row;
}
- (void)textViewDidEndEditing:(UITextView *)textView
{
NSLog(#"%d",textView.tag);
UPDATE DATABASE WITH CHANGED TEXT
[textView resignFirstResponder];
[self.tableView reloadData];
}