数据处理

NSString *path = [[NSBundle mainBundle] pathForResource:@"activitylist" ofType:@"txt"];
NSData *data = [NSData dataWithContentsOfFile:path];
NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

1.找到文件的路径
NSString *path = [[NSBundle mainBundle]pathForResource:@"0825Student" ofType:@"plist"];
self.stuArr = [NSMutableArray array];

2.读取本地数据
self.stuArr = [NSMutableArray arrayWithContentsOfFile:path];