App应用之间跳转

ゞ浴缸里的玫瑰 2023-10-17 05:58 34阅读 0赞

一个程序如果需要跳转到另一个程序，则需要在info.plist文件中添加URL Types，展开之后修改信息，在URL Schemes中添加key值，相当于跳转的URL，如下：

![Center][]

在BuyApp中

- (IBAction)gotoPay:(UIButton *)sender
    {
        //要跳转到某个APP，需要知道这个APP的URL，打开这个URL即可跳转(URL中不能有空格，而且空格用&)
        NSURL *url = [NSURL URLWithString:@"Pay://?name=iphone8&price=5000"];
        [[UIApplication sharedApplication]openURL:url];
    }

则在接受的PayApp的Appdelete文件中

//当本应用APP被其他APP打开时调用
    - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
    {
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil message:[NSString stringWithFormat:@"%@",url] delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
        [alert show];
        
        //把url转成string
        NSString *urlString = url.absoluteString;
        //先截取参数，获取？右边的参数
        NSString *param = [[urlString componentsSeparatedByString:@"?"]lastObject];
        //分割各个参数
        NSArray *paramArray = [param componentsSeparatedByString:@"&"];
        //获取＝右边商品名字参数
        NSString *name = [[[paramArray objectAtIndex:0]componentsSeparatedByString:@"="]lastObject];
        //获取＝右边价钱参数
        NSString *price = [[[paramArray objectAtIndex:1]componentsSeparatedByString:@"="]lastObject];
        
        //将商品名字、价格先存起来
        [[NSUserDefaults standardUserDefaults]setObject:name forKey:@"name"];
        [[NSUserDefaults standardUserDefaults]setObject:price forKey:@"price"];
        [[NSUserDefaults standardUserDefaults]synchronize];
        //或者发通知
        [[NSNotificationCenter defaultCenter]postNotificationName:@"getName" object:self userInfo:@{@"name":name,@"price":price}];
        return YES;
    }

同理：返回也是一样的操作，效果如下：

![Center 1][]

[Center]: https://img-blog.csdn.net/20160703161832333?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20160703162453247?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center