iOS开发自定义融云选取位置页面和位置信息页面的导航栏

Posted 2021-09-15 刘建伯

【ios开发】自定义融云选取位置页面和位置信息页面的导航栏

1. 选取位置页面

• 创建 RCLocationPickerViewController 的子类：RCDLocationViewController，可以实现自定义导航栏左右按钮

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"自定义左按钮" style:UIBarButtonItemStyleDone target:self action:@selector(leftItemDidPressed:)];
    self.navigationItem.leftBarButtonItem.tintColor = [UIColor redColor];
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"自定义右按钮" style:UIBarButtonItemStyleDone target:self action:@selector(rightItemDidPressed:)];
    self.navigationController.navigationBar.barTintColor = [UIColor blueColor];
}
- (void)leftItemDidPressed:(id)sendr {
    [self dismissViewControllerAnimated:YES completion:nil];
}
- (void)rightItemDidPressed:(id)sendr {
    [super rightBarButtonItemPressed:nil];
}

• 在聊天页子类重写以下方法，并设置代理，present 到子类的对象中。

/*!
 扩展功能板的点击回调

 @param pluginBoardView 输入扩展功能板View
 @param tag             输入扩展功能(Item)的唯一标示
 */
- (void)pluginBoardView:(RCPluginBoardView *)pluginBoardView clickedItemWithTag:(NSInteger)tag {
    switch (tag) {
           case PLUGIN_BOARD_ITEM_LOCATION_TAG: {
               RCDLocationViewController *vc = [[RCDLocationViewController alloc] init];
               vc.delegate = self;
               UINavigationController *navi = [[UINavigationController alloc] initWithRootViewController:vc];
               [self presentViewController:navi animated:YES completion:nil];
           }
               break;
               
           default:
               [super pluginBoardView:pluginBoardView clickedItemWithTag:tag];
               break;
       }
}

• 聊天页子类需要遵循代理 RCLocationPickerViewControllerDelegate，并实现方法：

/*!
 地理位置选择完成之后的回调

 @param locationPicker 地理位置选取的ViewController
 @param location       位置的二维坐标
 @param locationName   位置的名称
 @param mapScreenShot  位置在地图中的缩略图

 @discussion
 如果您需要重写地理位置选择的界面，当选择地理位置完成后，需要调用此回调通知RCConversationViewController定位已完成，可以进一步生成位置消息并发送。
 */
- (void)locationPicker:(RCLocationPickerViewController *)locationPicker
     didSelectLocation:(CLLocationCoordinate2D)location
          locationName:(NSString *)locationName
         mapScreenShot:(UIImage *)mapScreenShot {
    RCLocationMessage *locationMessage =
    [RCLocationMessage messageWithLocationImage:mapScreenShot location:location locationName:locationName];
    [self sendMessage:locationMessage pushContent:nil];
}

1. 位置信息页面

• 创建 RCLocationViewController 的子类LocationViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"自定义左按钮" style:UIBarButtonItemStyleDone target:self action:@selector(leftItemDidPressed:)];
    self.navigationItem.leftBarButtonItem.tintColor = [UIColor redColor];
    
    self.navigationController.navigationBar.barTintColor = [UIColor blueColor];
}
- (void)leftItemDidPressed:(id)sendr {
    [self dismissViewControllerAnimated:YES completion:nil];
}

• 在会话页面重写点击位置消息的回调

/**
 *  打开地理位置。开发者可以重写，自己根据经纬度打开地图显示位置。默认使用内置地图
 *
 *  @param locationMessageContent 位置消息
 */
- (void)presentLocationViewController:(RCLocationMessage *)locationMessageContent {
    // LocationViewController为 RCLocationViewController 的子类
    LocationViewController *locationViewController = [[LocationViewController alloc] init];
    locationViewController.locationName = locationMessageContent.locationName;
    locationViewController.location = locationMessageContent.location;
    locationViewController.modalPresentationStyle = UIModalPresentationFullScreen;
    UINavigationController *navc = [[UINavigationController alloc] initWithRootViewController:locationViewController];
    navc.modalPresentationStyle = UIModalPresentationFullScreen;
    [self presentViewController:navc animated:YES completion:NULL];
}