ios：mapkit如何在地图上启用当前位置按钮？

Posted 2023-03-21

【中文标题】ios：mapkit如何在地图上启用当前位置按钮？

【英文标题】：ios: mapkit how to enable curent location button on map?

【发布时间】：2014-02-10 13:43:28

【问题描述】：

我正在开发显示地图的应用程序。我在地图属性中启用了用户当前位置，它现在显示 蓝色 点表示用户的当前位置，但现在我想启用图片下方左下角的按钮（iPhone 中地图应用程序的快照）。

请告诉我如何在地图上得到这个

【问题讨论】：

MKUserTrackingBarButtonItem 是您所需要的。尝试在谷歌上搜索

【参考方案1】：

MKUserTrackingBarButtonItem *trackButton = [[MKUserTrackingBarButtonItem alloc] initWithMapView:mapView];   
[trackButton setTarget:self];
[trackButton setAction:@selector(track:)];

[toolbar setItems:[NSArray arrayWithObjects:trackButton, nil] animated:YES];

【参考方案2】：

在这里你可以找到这个的实现

ios6MapsUserHeadingButton

以下是代码，您可以在上述链接中找到图片

//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];

【参考方案3】：

您需要创建 MKUserTrackingBarButtonItem 并将其传递给您定义地图视图的 MKMapview。如下所示：

  - (void)viewDidLoad

    [super viewDidLoad];    
    MKUserTrackingBarButtonItem *buttonItem = [[MKUserTrackingBarButtonItem alloc] initWithMapView:self.map];
    self.navigationItem.rightBarButtonItem = buttonItem;