UIGestureRecognizer崩溃＆lt; OS3.2
这是可以预料的，但我似乎无法找到一个正常运行的运行时，因为它似乎是一个私有API之前!!!!
目前我已经和OS3.1.3响应了addGestureRecognizer选择器!!!!
if ( [self.view respondsToSelector:@selector(addGestureRecognizer:)] ) {
UIGestureRecognizer *recognizer;
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(morePress)];
[self.view addGestureRecognizer:recognizer];
recognizer.delegate = self;
[recognizer release];
}
没有找到相关结果
已邀请:
3 个回复
良阑纠苫
NSString *currentSystemVersion = [[UIDevice currentDevice] systemVersion]; if([currentSystemVersion compare:@"3.2"] == NSOrderedAscending) { //add gesture recognizer } else { // :( }盛虱
，也不意味着使用它是安全的。襄挟款籍
UIGestureRecognizer *gestureRecognizer = [[UIGestureRecognizer alloc] initWithTarget:self action:@selector(myAction:)]; if (![gestureRecognizer respondsToSelector:@selector(locationInView:)]) { [gestureRecognizer release]; gestureRecognizer = nil; } // do something else if gestureRecognizer is nil