應用間的相互跳轉

打開其他應用，需要給被打開應用設置schemes：自定義的協議頭。

跳轉的代碼如下：

- (IBAction)skipToWechat {
    [self openURLWithString:@"mywechat://"];
}

- (IBAction)skipToTimeline {
    [self openURLWithString:@"mywechat://timeline?news"];
}

- (IBAction)skipToSession {
    [self openURLWithString:@"mywechat://session?news"];
}

- (void)openURLWithString:(NSString *)urlString
{
    // 1.獲取到對應應用程序的URL
    NSURL *wechatURL = [NSURL URLWithString:urlString];

    // 2.判斷手機中是否安裝了對應的應用程序
    if ([[UIApplication sharedApplication] canOpenURL:wechatURL]) {

        // 3.打開應用程序
        [[UIApplication sharedApplication] openURL:wechatURL];
    }
}

注：@”@”mywechat://timeline?news”中的？前邊的mywechat://timeline是要跳轉到協議頭爲myweichat的應用中的timeline頁面，後邊的news是當前應用的協議頭。

跳轉後，到目的應用中的AppDelegate類中獲取協議，並且半段跳轉到什麼頁面，代碼如下：

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
    // self.url = url.absoluteString;

    // 1.將URL轉成字符串
    NSString *urlString = url.absoluteString;

    // 獲取到主頁控制器
    UINavigationController *rootNav = (UINavigationController *)self.window.rootViewController;
    [rootNav popToRootViewControllerAnimated:NO];
    ViewController *homeVc = [rootNav.childViewControllers firstObject];
    homeVc.urlString = urlString;

    // 2.判斷是通過朋友圈還是微信好友跳轉過來
    if ([urlString containsString:@"timeline"]) {
        [homeVc performSegueWithIdentifier:@"homeToTimeline" sender:nil];
    } else if ([urlString containsString:@"session"]){
        [homeVc performSegueWithIdentifier:@"homeToSession" sender:nil];
    }

    return YES;
}

從目的應用，跳回到原應用，就用到了收到的協議？後的參數，需要注意的是拼接完整協議頭，代碼如下：

- (IBAction)backToApp {

    // 0.拿到對應應用程序的urlScheme(wechat://session?news)
    /*
    NSRange range = [self.urlString rangeOfString:@"?"];
    range.location;
    self.urlString substringFromIndex:range.location
     */
    NSString *urlSchemeString = [[self.urlString componentsSeparatedByString:@"?"] lastObject];
    NSString *urlString = [urlSchemeString stringByAppendingString:@"://"];

    // 1.獲取對應應用程序的URL
    NSURL *url = [NSURL URLWithString:urlString];

    // 2.判斷是否可以打開
    if ([[UIApplication sharedApplication] canOpenURL:url]) {
        [[UIApplication sharedApplication] openURL:url];
    }
}

轉載請註明出處，萬分感謝！