2019-01-07iOS 判断数组是否为（nil/空指针/空）

if(self.dataArray != nil && ![self.dataArray isKindOfClass:[NSNull class]] && self.dataArray.count != 0){
}


NSDictionary *dict =self.datas[indexPath.row];
    if([[dict allKeys] containsObject:@"key"]){
        cell.textLabel.text= [dict valueForKey:@"key"];
    }else{
        cell.textLabel.text=@"没有对应的key值";
    }