Question

我想以与iOS6相同的方式创建MKUserTrackingBarButtonItem。像浮动UIBarButtonItem一样。（http://cl.ly/image/1Q1K2S1A1H3N）

你能就如何实现这个目的提出一些建议吗？

THX！

Answer 1

最后，我按照@rckoenes的推荐，手动创建了按钮。

以下是（工作项目可在此处获取：https://github.com/jcalonso/iOS6MapsUserHeadingButton）：

//User Heading Button states images
UIImage *buttonImage = [UIImage imageNamed:@"greyButtonHighlight.png"];
UIImage *buttonImageHighlight = [UIImage imageNamed:@"greyButton.png"];
UIImage *buttonArrow = [UIImage imageNamed:@"LocationGrey.png"];

//Configure the button
userHeadingBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[userHeadingBtn addTarget:self action:@selector(startShowingUserHeading:) forControlEvents:UIControlEventTouchUpInside];
//Add state images
[userHeadingBtn setBackgroundImage:buttonImage forState:UIControlStateNormal];
[userHeadingBtn setBackgroundImage:buttonImage forState:UIControlStateNormal];
[userHeadingBtn setBackgroundImage:buttonImageHighlight forState:UIControlStateHighlighted];
[userHeadingBtn setImage:buttonArrow forState:UIControlStateNormal];

//Button shadow
userHeadingBtn.frame = CGRectMake(5,425,39,30);
userHeadingBtn.layer.cornerRadius = 8.0f;
userHeadingBtn.layer.masksToBounds = NO;
userHeadingBtn.layer.shadowColor = [UIColor blackColor].CGColor;
userHeadingBtn.layer.shadowOpacity = 0.8;
userHeadingBtn.layer.shadowRadius = 1;
userHeadingBtn.layer.shadowOffset = CGSizeMake(0, 1.0f);

[self.mapView addSubview:userHeadingBtn];

Answer 2

如果你想使用自动布局的jcalonso答案，以便它支持纵向/横向iPhone / iPad，只需删除设置按钮框架的线条，并在调用addSubView后添加这些约束：

[mapView setTranslatesAutoresizingMaskIntoConstraints:NO];
[userHeadingBtn setTranslatesAutoresizingMaskIntoConstraints:NO];

NSDictionary *dict = NSDictionaryOfVariableBindings(mapView, userHeadingBtn);

//Map has user heading btn
[mapView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-(>=175)-[userHeadingBtn(30)]-|" options:0 metrics:0 views:dict]];
[mapView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-(>=175)-[userHeadingBtn(39)]-|" options:0 metrics:0 views:dict]];

//Continue with adding the map to the baseview
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[mapView]|" options:0 metrics:0 views:dict]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[mapView]|" options:0 metrics:0 views:dict]];

创建iOS6 Maps MKUserTrackingBarButtonItem按钮

2 个答案: