我必须在ipad应用程序中的scrollview上动态创建多个文本字段。 textfield创建成功，并且我在单击的textfield上使用了弹出视图，但是当我单击textfield时，我没有得到Textfield的标签。我得到了最后一个文本字段的标记，所以我无法在当前文本字段上设置文本。
以下代码我用...
int j = 430;
int k = 413;
int RB = 423;
for (int i=0; i<[appDelegate.questions count]; i++) {
imgTxtQue = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"textbox.png"]];
imgTxtQue.frame = CGRectMake(267, k, 490, 60);
// UIImageView *imgRatingBtn = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@""]];
// imgRatingBtn.frame = CGRectMake(633, RB, 102, 39);
//ratingButton1.hidden = NO;
ratingButton1 = [[UIButton alloc] initWithFrame:CGRectMake(633, RB, 102, 39)];
[ratingButton1 setImage:[UIImage imageNamed:@"rating_selected.png"] forState:UIControlStateNormal];
txtQuestions = [[UITextField alloc] initWithFrame:CGRectMake(296, j, 429, 24)];
//txtQuestions.tag = i;
[txtQuestions setTag:i];
NSLog(@"%d", txtQuestions.tag);
txtQuestions.delegate = self;
[txtQuestions setPlaceholder:[[appDelegate.questions objectAtIndex:i] objectForKey:@"question"]];
txtQuestions.borderStyle = UITextBorderStyleNone;
// txtQuestions.background = imgTxtQue.image;
[scrView addSubview:imgTxtQue];
[scrView addSubview:ratingButton1];
[scrView addSubview:txtQuestions];
j = j+50;
k = k+50;
RB = RB+50;
}
-(void)loadQuestion
{
txtQuestionOne.hidden=NO;
imgTxtQue.hidden=NO;
CGRect aFrame1 = imgTxtQue.frame;
aFrame1.size.width = aFrame1.size.width + 200;
// aFrame.size.height = newHeight;
NSString *strQue = [NSString stringWithFormat:@"%@",[[appDelegate.questions objectAtIndex:0] objectForKey:@"question"]];
CGSize newSize1 = [strQue sizeWithFont: [UIFont fontWithName: @"TrebuchetMS" size: 12] ];
if (strQue.length > 42) {
imgTxtQue.frame = CGRectMake(267, 413, newSize1.width+353, 60);
[txtQuestionOne setFrame:CGRectMake(294, 430, newSize1.width+350, 24)];
ratingButton1.frame = CGRectMake(855, 423, 102, 39);
ratingLabel1.frame = CGRectMake(900, 430, 42, 21);
}
[txtQuestionOne setPlaceholder:[[appDelegate.questions objectAtIndex:0] objectForKey:@"question"]];
appDelegate.dynamicQues =[[appDelegate.questions objectAtIndex:0] objectForKey:@"question"];
NSLog(@"current q1 %@", [[appDelegate.questions objectAtIndex:0] objectForKey:@"question"]);
if ([[[appDelegate.questions objectAtIndex:0] objectForKey:@"permission"] isEqualToString:@"1"]) {
ratingButton1.hidden=NO;
ratingLabel1.hidden=NO;
}
}
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
BOOL editing=YES;
for (UIImageView *img in ViewPost.subviews)
{
if ([img isKindOfClass:[UIImageView class]])
{
if (img.tag==textField.tag)
{
[img setImage:[UIImage imageNamed:@"Redtextbox.png"]];;
}
else{
if (img.tag!=0) {
if (img.tag != 10) {
[img setImage:[UIImage imageNamed:@"textbox.png"]];
}
else
{
[img setImage:[UIImage imageNamed:@"inputbox.png"]];
}
}
}
}
}
if (textField==txtcategory) {
[textField resignFirstResponder];
appDelegate.category=YES;
editing=NO;
touchflag=1;
[self performSelectorOnMainThread:@selector(CategoryListClick) withObject:nil waitUntilDone:YES];
//[self CategoryListClick];
return NO;
}
if (textField==txtsubcategory) {
appDelegate.category=NO;
editing=NO;
[self performSelectorOnMainThread:@selector(CategoryListClick) withObject:nil waitUntilDone:YES];
}
if (txtQuestions.tag) {
// if (textField==txtQuestions) {
editing=NO;
index=txtQuestions.tag;
NSLog(@"%d",txtQuestions.tag);
touchflag = 1;
[self performSelectorOnMainThread:@selector(loadAnswers) withObject:nil waitUntilDone:YES];
// }
}
-(void)loadAnswers{
if (touchflag==1) {
[Name resignFirstResponder];
[Email resignFirstResponder];
[txtCityCode resignFirstResponder];
[txtcategory resignFirstResponder];
[txtTitle resignFirstResponder];
[txtQuestions resignFirstResponder];
[txtsubcategory resignFirstResponder];
SubcategoryPopViewController *objPopview = [[SubcategoryPopViewController alloc]initWithNibName:@"SubcategoryPopViewController" bundle:nil];
objPopview.delegate = self;
objPopview.index=txtQuestions.tag;
popView =[[UIPopoverController alloc]initWithContentViewController:objPopview];
[self RescheduleTimer];
[popView presentPopoverFromRect:imgTxtQue.frame inView:ViewPost permittedArrowDirections:0 animated:NO];
[popView setPopoverContentSize:CGSizeMake(376, 260)];
}
}
-(void) didSelectAnswer{
touchflag=0;
[popView dismissPopoverAnimated:YES];
[self RescheduleTimer];
if (appDelegate.ansDynamic==YES) {
// txtQuestionOne.text=appDelegate.answerOne;
if (txtQuestions.tag) {
txtQuestions.text = appDelegate.answerDynamic;
}
appDelegate.ansDynamic=NO;
questionIndex=txtQuestions.tag;
if (![ratingButton1 isHidden]) {
ratingButton1.enabled=YES;
RatingPopViewController *objPopview = [[RatingPopViewController alloc]initWithNibName:@"RatingPopViewController" bundle:nil];
objPopview.index=txtQuestions.tag;
objPopview.checkedCell=ratingLabel1.text;
objPopview.QuestionText=appDelegate.answerDynamic;
objPopview.delegate=self;
popSweepStakes =[[UIPopoverController alloc]initWithContentViewController:objPopview];
[popSweepStakes presentPopoverFromRect:ratingButton1.frame inView:ViewPost permittedArrowDirections:UIPopoverArrowDirectionRight animated:YES];
[popSweepStakes setPopoverContentSize:CGSizeMake(300, 400)];
}
return;
}
在上面的代码中，我正确地获得了标签，但是当我在其他Mathod上使用标签时，我仅获得了最后一个textfields标签。
谢谢，
拉胡尔·维尔贾（Rahul Virja）
最佳答案
您覆盖txtQuestions变量。
声明这样的类属性NSMutableArray * _textFieldArray。 （它的导入声明一个NSMutableArray对象以添加您的textField）。
在类的init方法中分配并初始化数组：_textFieldArray = [[NSmutableArray alloc]init]。
在您的for语句中，使用以下代码分配textField：UItextField * txtQuestions = [[UITextField alloc] initWithFrame:CGRectMake(296, j, 429, 24)];
将所有属性设置为txtQuestions对象后，将其添加到数组中[_textFieldArray addObject:txtQuestions]
当您需要文本字段时，请使用以下代码：
[_textFieldArray objectAtIndex:txtQuestions.tag]
清楚吗？