UITextField委托不工作

Question

我在我的iPad应用程序的UITableViewCell里面有一个UITextField。如果我输入文本，然后按解除键盘按钮，它将保存文本，但如果我点击更改视图而不关闭键盘，它不会保存文本。

我使用此代码尝试resigning textField作为第一响应者，但没有运气。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    for (int it=0; it < [self.clinicalChecklist count]; ++it) 
    { 
     ClinicalChecklistCell *cell = (ClinicalChecklistCell *)[self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:it inSection:0]]; 
     UITouch *touch = [[event allTouches] anyObject]; 
     if ([cell.col1_singleEntryValue isFirstResponder] && [touch view] != cell.col1_singleEntryValue) { 
      [cell.col1_singleEntryValue resignFirstResponder]; 
     } 
     if ([cell.col2_singleEntryValue isFirstResponder] && [touch view] != cell.col2_singleEntryValue) { 
      [cell.col2_singleEntryValue resignFirstResponder]; 
     } 
     if ([cell.col1_doubleEntryValue_1 isFirstResponder] && [touch view] != cell.col1_doubleEntryValue_1) { 
      [cell.col1_doubleEntryValue_1 resignFirstResponder]; 
     } 
     if ([cell.col1_doubleEntryValue_2 isFirstResponder] && [touch view] != cell.col1_doubleEntryValue_2) { 
      [cell.col1_doubleEntryValue_2 resignFirstResponder]; 
     } 
     if ([cell.col2_doubleEntryValue_1 isFirstResponder] && [touch view] != cell.col2_doubleEntryValue_1) { 
      [cell.col2_doubleEntryValue_1 resignFirstResponder]; 
     } 
     if ([cell.col2_doubleEntryValue_2 isFirstResponder] && [touch view] != cell.col2_doubleEntryValue_2) { 
      [cell.col2_doubleEntryValue_2 resignFirstResponder]; 
     } 
     [super touchesBegan:touches withEvent:event]; 
    } 
} 

Answer 1

如果你只是想获得的UITextField的文本，

[myTextField addTarget:self action:@selector(getText) forControlEvents:UIControlEventEditingChanged];