无法将谷歌地图分配给自定义视图 [英] Can't assign a google maps map to custom view

问题描述

所以我按照本指南了解如何将谷歌地图添加到 iOS 应用程序，一切正常.但是我想要做的是分配地图，而不是 self.view 而是我拖到故事板里面的自定义视图(?)另一个视图，因为在将地图添加到 时>self.view 我不能添加其他元素，比如按钮，或者好吧，我可能可以，但我不知道如何.

So I followed this guide on how to add a Google map to an iOS application and it all works fine. But what I want to do is assign the map, not to self.view but a custom view I dragged out on to the storyboard inside(?) the other view, because when adding the map to self.view I can't add other elements, like buttons, or well, I probably can but I don't know how.

代码:

// Start locationmanager
locationManager = [[CLLocationManager alloc] init];
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.delegate = self;
[locationManager startUpdatingLocation];

// Set up the startposition for the camera when the app first starts.
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:59.34702 longitude:18.04053 zoom:10];
mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
self.view = mapView_;

所以我在当前包含地图的视图中创建了一个 UIView 并按住 ctrl 拖动它以在该 viewController 中创建一个名为 mapView 的出口.所以我改变了代码行

So i created a UIView inside the view currently containing the map and ctrl dragged it to create an outlet called mapView in that viewController. So i changed the line of code from

self.view = _mapView;

到

self.mapView = _mapView;

但这似乎根本不起作用，只是空白.self.view 和 self.mapsView 都是 UIView 的实例，为什么这不起作用?

but this does not seem to work at all, just blank. Both self.view and self.mapsView are instances of UIView, so why does this not work?

更新:

这就是我的 viewDidLoad atm 的样子:

This is what my viewDidLoad looks like atm:

- (void)viewDidLoad
{
[super viewDidLoad];

[self.mapView addSubview:mapView_];

// Start locationmanager
locationManager = [[CLLocationManager alloc] init];
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.delegate = self;
[locationManager startUpdatingLocation];

// Standard cameraposition
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:59.34702 longitude:18.04053 zoom:10];
mapView_ = [GMSMapView mapWithFrame:self.mapView.frame camera:camera];


self.mapView = mapView_;
}

推荐答案

在您的项目中试试这个:

Try this in your project:

//
//  testViewController.m
//  maps
//
//  Created by Millén on 2013-02-25.
//  Copyright (c) 2013 JamWeb. All rights reserved.
//

#import "testViewController.h"
#import <GoogleMaps/GoogleMaps.h>

@interface testViewController ()
@property(nonatomic, strong) GMSMapView *gMapView;
@end

@implementation testViewController {
    CLLocation *oldLocation;
}

-(void)loadView
{
    CLLocationDegrees lat = 59.34702;
    CLLocationDegrees lon = 18.04053;

    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:lat longitude:lon zoom:10];
    self.gMapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
    self.gMapView.myLocationEnabled = YES;
    self.view = self.gMapView;

    [self updateLocation];
}

- (void)viewDidLoad
{
    [super viewDidLoad];


    // Start locationmanager
    locationManager = [[CLLocationManager alloc] init];
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    locationManager.delegate = self;
    [locationManager startUpdatingLocation];


}

- (IBAction)updateLocation {
    [locationManager startUpdatingLocation];
}



- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    CLLocation *location = [locations lastObject];

    /*
    if(!oldLocation)
    {
        oldLocation = location;
    }

    if (![location isEqual:oldLocation]) {
        GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude: location.coordinate.latitude
                                                                longitude: location.coordinate.longitude
                                                                     zoom:7];

        mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
        mapView_.myLocationEnabled = YES;
        self.view = mapView_;

        oldLocation = location;
        [locationManager stopUpdatingLocation];
    }
     */



    NSLog(@"lat%f - lon%f", location.coordinate.latitude, location.coordinate.longitude);
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

这篇关于无法将谷歌地图分配给自定义视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！