我有这个代码:
-(IBAction) doSomething{
FirstViewController *firstViewController = [[[FirstViewController alloc]init]autorelease];
[firstViewController.label1 setAlpha:1.00];
[firstViewController.label2 setAlpha:1.00];
}
-(void) do{
//use firtsViewController in this method
}
如您在示例中看到的,我使用FirstViewController类的对象“ firstViewController”,但是是否要在方法“ do”中使用相同的对象?我能怎么做
最佳答案
在标题中有...
FirstViewController *firstViewController;
然后将您的方法替换为...
-(IBAction) doSomething{
if(firstViewController == nil) {
firstViewController = [[FirstViewController alloc]init];
}
[firstViewController.label1 setAlpha:1.00];
[firstViewController.label2 setAlpha:1.00];
}
并添加..
- (void)dealloc {
[firstViewController release];
[super dealloc];
}
关于objective-c - iOS:处理对象,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/6387216/