reason: '*** Collection <__NSCFArray: 0x7ffa43528f70> was mutated while being enumerated.'

一,错误分析

1.崩溃代码如下:

    //遍历当前数组,判断是否有相同的元素

    for (NSString *str in self.searchHistoryArrM) {

        if ([str isEqualToString:historyStr]) {

            NSLog(@"%@====>%@",self.searchHistoryArrM ,str);

            [self.searchHistoryArrM removeObject:str];

        }

        NSLog(@"%@",self.searchHistoryArrM);

    }

2.打印出数组的内容以后,才发现是数组的内容有问题.移除元素后需要 break.