特定の条件が満たされたときにLongPressを検出します。

Question

コレクションビューでUILongPressGestureRecognizerを使用しています。長いプレスのジェスチャ認識機能が一定の条件を満たす場合にのみ動作します。

NSString *check; 
if([check isEqualToString:@"Enabled"] 
{ 
    //long press should be detected. or following method should be called 
} 

-(void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer 

{ 
} 

Answer 1

UIGestureRecognizerDelegate

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{ 

    NSString *check; 
    if([check isEqualToString:@"Enabled"] 
    { 
     //long press should be detected. or following method should be called 
     return YES; 
    }else{ 
     return NO; 
    } 
} 

Answer 2

NSString *check; 
UILongPressGestureRecognizer *longPress =[ [UILongPressGestureRecognizer alloc]init]; 

if([check isEqualToString:@"Enabled"] 
{ 
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] 
             initWithTarget:self 
             action:@selector(handleLongPressGesture:)]; 
}else{ 

} 

-(void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer 

{ 

}