SQL累积计数(SQL Cumulative Count)

 您可以在代码中考虑两件事： 
 
 
 
 行NSString *FileNamePath = [[NSBundle mainBundle] pathForResource:@"testAudio" ofType:@"aiff"]; 不需要，因为它只返回文件的完整路径，而你只需要它的最后一部分：“testAudio.aiff” 
 
 
 您构造URL对象，构造函数接受具有有效协议前缀的字符串，如“http：//”或“ftp：//”，而您需要另一个名为initFileURLWithPath:构造函数。 
 
 
 因此，以上所有代码可能如下所示： 
 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *appSettingsPath = [documentsDirectory stringByAppendingPathComponent:@"testAudio.aiff"];
NSURL *url=[[NSURL alloc]initFileURLWithPath:appSettingsPath];

BOOL result =  [MyAcaTTS_ startSpeakingString:@"testing" toURL:url];

There are two things for you to consider in your code:
 
 
 
The line NSString *FileNamePath = [[NSBundle mainBundle] pathForResource:@"testAudio" ofType:@"aiff"]; is not required since it returns full path of the file while you need only the last part of it: "testAudio.aiff"
 
 
You construct URL object with constructor accepting strings with valid protocol prefix, like "http://" or "ftp://" while your need another constructor named initFileURLWithPath: instead.
 
 
So with all the above your code may look like this:
 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *appSettingsPath = [documentsDirectory stringByAppendingPathComponent:@"testAudio.aiff"];
NSURL *url=[[NSURL alloc]initFileURLWithPath:appSettingsPath];

BOOL result =  [MyAcaTTS_ startSpeakingString:@"testing" toURL:url];