iPhone中从本地播放数据

NSArray *datapaths = NSSearchPathForDirectoriesInDomains(
                                                             NSDocumentDirectory,
                                                             NSUserDomainMask,
                                                             YES);        
    self.savefile=[NSString stringWithFormat: @"%@/Savedata.plist", [datapaths objectAtIndex:0]];
    self.savedataarray=[NSMutableArray arrayWithContentsOfFile:self.savefile];