#pragma mark - 创建plist文件
-(void)creatPlistFileWithArr:(NSArray *)array{
 //将字典保存到document文件->获取appdocument路径
 NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
 //要创建的plist文件名 -> 路径
 NSString *filePath = [docPath stringByAppendingPathComponent:@"cityPlist.plist"];
 //将数组写入文件
 [array writeToFile:filePath atomically:YES];
 //读取文件
 NSArray *plistArr = [NSArray arrayWithContentsOfFile:filePath];
 NSLog(@"读取 写入的plist 文件:%@",plistArr);
}