xcode UITextfield 清除按钮
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UITextfield clear button
提问by user648244
How can I clear the field which currently has the cursor placed inside it?
如何清除当前放置光标的字段？
I have tried:
我试过了：
if(textfield.isEditing)
textfield.text = @"";
This works for me, but if I select all 3 fields, and press the 'clear field button' all the fields clear Also instead of isEditing, I have tried to use tags on the UITextfields and do :
这对我有用，但是如果我选择所有 3 个字段，然后按“清除字段按钮”清除所有字段，而不是 isEditing，我尝试在 UITextfields 上使用标签并执行以下操作：
if(textfield.tag == 1)
textfield.text = @"";
but this has the same effect.
但这具有相同的效果。
How can I solve this problem?
我怎么解决这个问题？
回答by Jordan
try one or both of these...
尝试其中一种或两种...
textField.clearButtonMode = UITextFieldViewModeWhileEditing;
textField.clearsOnBeginEditing = YES;
Then add delegate...
然后添加委托...
- (BOOL)textFieldShouldClear:(UITextField *)textField {
return YES;
}
回答by Terry Wilcox
Try out this in TextField's Delegate method didBeginEditing:
在 TextField 的 Delegate 方法中试试这个 didBeginEditing:
if ([textfield isFirstResponder]) {
textfield.text = @"";
}
Hope this helps you.
希望这对你有帮助。
