如何解决UIscrollview中带有标签的问题
问题描述：
我正在做一个UIscrollView的小概念。我给scrollview（语言）附加了10个标签，我想从标签中检索用户选择的标签值。该代码正在执行并正在运行，但有时候它会以任何异常/错误结束。如何解决UIscrollview中带有标签的问题
注意：我有一个疑问，那就是当第一次出现屏幕时。如果我按下了向上滚动视图按钮，滚动视图中的标签正在移动到最后一个label.if我按下了向下按钮移动第一label.it只发生了第一次移动一起来后/下
可以解决这个问题的任何一个帮助...
-(void)printLanguage
{
NSLog(@"in print language method");
//int y=0;
//NSMutableArray *languageArray=[[NSMutableArray alloc]initWithObjects:@"Chinese",@"Spanish",@"English",@"Arabic",@"Hindi",@"Bengali",@"Portuguese",@"Russian",@"Japanese",@"German",nil];
//UILabel *languageLabel=[[UILabel alloc]initWithFrame:CGRectMake(0, y ,90,30)];
languagValue=0;
int y=0;
languageArray=[[NSMutableArray alloc]initWithObjects:@"Chinese",@"Spanish",@"English",@"Arabic",@"Hindi",@"Bengali",@"Portuguese",@"Russian",@"Japanese",@"German",nil];
for(languagValue=0;languagValue<[languageArray count];languagValue++)
{
UILabel *languageLabel=[[UILabel alloc]initWithFrame:CGRectMake(0, y ,90,30)];
NSLog(@"array count is @%d",[languageArray count]);
languageLabel.text=[languageArray objectAtIndex:languagValue];
NSLog(@"array objectat index is @%@",[languageArray objectAtIndex:languagValue]);
languageLabel.font=[UIFont systemFontOfSize:19.0];
languageLabel.backgroundColor=[UIColor clearColor];
[languageScrollView addSubview:languageLabel];
// [languageScrollView addSubview:languageLabel];
//y+=90;
y+=languageLabel.frame.size.height;
[languageLabel release];
}
[languageScrollView setShowsHorizontalScrollIndicator:NO];
[languageScrollView setShowsVerticalScrollIndicator:NO];
[languageScrollView setContentSize:CGSizeMake(genderScrollView.frame.size.width, y)];
}
-(IBAction)languageDownButton:(id)sender
{
NSLog(@"language scroll view up button pressed");
languagValue-=1;
NSLog(@"value of language value is @%d",languagValue);
if(!(languagValue>0))
{
languagValue=0;
}
else if(!(languagValue<10))
{
languagValue=9;
}
else {
NSLog(@"gender value*24 is @%d",(languagValue)*30);
[languageScrollView setContentOffset:CGPointMake(0, (languagValue)*30) animated:YES];
}
}
-(IBAction)languageUpButton:(id)sender
{
NSLog(@"language scroll view down button pressed");
NSLog(@"value of language value is @%d",languagValue);
languagValue+=1;
if(!(languagValue>0))
{
languagValue=0;
}
else if(!(languagValue<10))
{
languagValue=9;
}
else {
NSLog(@"gender value*24 is @%d",(languagValue)*30);
[languageScrollView setContentOffset:CGPointMake(0, (languagValue)*30) animated:YES];
}
}
答
你应该更好地使用的UITableView此，使用它的委托方法，您可以轻松地显示语言数组。 并为了创建选定的语言，将使用此委托方法。
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath