Question

所以我有我的代码通过制作AppleScript对象并使用AppleScript返回的值作为发送给用户的信息来获取正在播放的当前歌曲。可悲的是，它抛出了我需要摆脱的一堆其他垃圾。

这是我的代码：

-(NSString *)getCurrentTrack {
    NSString *currentTrack = @"";
    NSAppleScript *getTrack = [[NSAppleScript alloc] initWithSource:@"tell application \"iTunes\" to get the name of the current track"];


    currentTrack = [getTrack executeAndReturnError:nil];

    return currentTrack;

    //tell application "iTunes" to get the name of the current track
}

currentTrack的返回值为：

<NSAppleEventDescriptor: 'utxt'("track name here")>

所以我需要摆脱<NSAppleEventDescriptor: 'utxt'(" and the ")> at the end

Answer 1

[getTrack executeAndReturnError：nil]返回NSAppleEventDescriptor

从NSAppleEventDescriptor获取NSString：

NSAppleEventDescriptor *resultDescriptor = [getTrack executeAndReturnError:nil];
return [resultDescriptor stringValue];

Answer 2

我希望这有效：

-(NSString *)getCurrentTrack {
    NSString *currentTrack = @"";
    NSAppleScript *getTrack = [[NSAppleScript alloc] initWithSource:@"tell application \"iTunes\" to get the name of the current track"];


    currentTrack = [getTrack executeAndReturnError:nil];

    currentTrack = [currentTrack stringByReplacingOccurrencesOfString:@"\"" withString:@"'"];
    NSArray *left = [currentTrack componentsSeparatedByString:@"('"];
    NSString *text2 = [left objectAtIndex:1];
    NSArray *right = [text2 componentsSeparatedByString:@"')"];

    return [right objectAtIndex:0];


    //tell application "iTunes" to get the name of the current track
}

它应该使用您提供给我的track name here示例返回<NSAppleEventDescriptor: 'utxt'("track name here")>，但我手动转义了"，因为我创建了一个假响应，如下所示：currentTrack = @"<NSAppleEventDescriptor: 'utxt'(\"track name here\")>";

请告诉我它是否有效，-Joseph Rautenbach（你知道我大声笑）

获取Apple Event的可用说明

2 个答案: