转：导航栏向左的带箭头的按钮

转：导航栏向左的带箭头的按钮

11-5-14

转： http://stackoverflow.com/questions/227078/creating-a-left-arrow-button-like-uinavigationbars-back-style-on-a-uitoolbar

【自：101号button就是向左的箭头。】

// create button
UIButton* backButton = [UIButton buttonWithType:101]; // left-pointing shape!
 [backButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
 [backButton setTitle:@"Back" forState:UIControlStateNormal];
 
// create button item -- possible because UIButton subclasses UIView!
UIBarButtonItem* backItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
 
// add to toolbar, or to a navbar (you should only have one of these!)
[toolbar setItems:[NSArray arrayWithObject:backItem]];
 navItem.leftBarButtonItem = backItem;

＋＋＋＋＋