这是我不明白的东西。看看这个方法(复制自http://blog.blackwhale.at/2009/07/uibutton-in-uitableview-footer/)iphone - 会泄漏吗?
看到footerView被分配在代码的开头,并且从未被释放。 据我所知,该对象应该是autoreleased或至少释放后使用一个普通的情况下,但由于这种方法是自动运行的表,当它们被建立时,这个视图的确切位置将被释放...
还是会泄漏?我看过苹果的代码样例,所以我想这个对象正在某处发布......但是在哪里?
// custom view for footer. will be adjusted to default or specified footer height
// Notice: this will work only for one section within the table view
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section {
if(footerView == nil) {
//allocate the view if it doesn't exist yet
footerView = [[UIView alloc] init];
//we would like to show a gloosy red button, so get the image first
UIImage *image = [[UIImage imageNamed:@"button_red.png"]
stretchableImageWithLeftCapWidth:8 topCapHeight:8];
//create the button
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setBackgroundImage:image forState:UIControlStateNormal];
//the button should be as big as a table view cell
[button setFrame:CGRectMake(10, 3, 300, 44)];
//set title, font size and font color
[button setTitle:@"Remove" forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont boldSystemFontOfSize:20]];
[button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
//set action of the button
[button addTarget:self action:@selector(removeAction:)
forControlEvents:UIControlEventTouchUpInside];
//add the button to the view
[footerView addSubview:button];
}
//return the view for the footer
return footerView;
}
谢谢。
iPhone可能会泄漏,但iPad是超强吸水性的。 – JasCav 2010-08-02 17:29:00