小编use*_*278的帖子

我有这个代码用于保存mp3文件

NSArray *documentPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *docDirectory = [documentPath objectAtIndex:0];

    NSString *fileName = [[NSString alloc] initWithFormat:@"%@%@.mp3", dateString ,timeString ];


    NSURL* fileURL = [NSURL URLWithString:myString];
    NSError* error = nil;
    NSData* data = [NSData dataWithContentsOfURL:fileURL options:0 error:&error];

     NSString *savePath = [docDirectory stringByAppendingPathComponent:fileName];

    [data writeToFile:savePath atomically:YES];

现在我想通过MPMoviePlayerController读取此文件

如何获取路径或nsurl文件

--- somthing代码一样

 NSURL * urlv = [[NSURL alloc] initWithString:myString];
     avPlayer = [[MPMoviePlayerController alloc] initWithContentURL:urlv];
    [avPlayer prepareToPlay];
    [avPlayer play];

请帮助搜索mystrig或nsurl源代码

我想在手表中创建一个按钮,同时点击手表启动一个进程到我的ios应用程序.如何在两台设备之间发送数据

-(void)viewWillAppear:(BOOL)animated

{
 [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(sayHello:) name: @"sayHelloNotification" object: nil];

}

加

 [[NSNotificationCenter defaultCenter] postNotificationName: @"sayHelloNotification" object: nil];

在我的按钮手表,但它不起作用