一.localizability issue=本地化错误
User-facing text should use localized string macro错误,是由于项目配置了本地化,解决办法搜索localizability 如图:
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这个问题解决后,重新分析后,就不会有这个错误了,数量从999+变成了200.
二.Memory (Core Foundation/Objective-c/OSObject)=潜在的内存泄漏
1.The 'didReceiveMemoryWarning' instance method in UIViewController subclass 'FlutterController' is missing a[super didReceiveMemoryWarning]call
解决办法:在didReceiveMemoryWarning方法加上[super didReceiveMemoryWarning];
同理的问题还有:
[super viewDidDisappear:animated];
[super viewWillAppear:animated];
2.Instance variable used while 'self' is not set to the result of '[(super or self) init...]'
报这种错误如图:
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改为:
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必须通过super来获取self,再进行操作
三.API Misuse(Apple)
1.Argument to 'NSMutableArray' method 'addObject:' cannot be nil
向可变数组增加一个可能是nil的对象
解决办法:排除掉为nil的情况
如图:
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改为
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2.Key argument to 'setObject:forKey:' cannot be nil
设置的键可能为nil,
解决办法:排除为nil的情况。
3.Value argument to 'setObject:forKey:' cannot be nil
设置的值可能为nil,
解决办法:排除为nil的情况。
四.Logic error 逻辑错误
1.Property of mutable type 'NSMutableArray' has 'copy' attribute; an immutable object will be stored instead
定义属性时引用错误。NSMutableArray是可变数据类型,应该用strong来修饰其对象
@property(nonatomic,copy)NSMutableArray *state;---错误
@property(nonatomic,strong)NSMutableArray *state;---正确
2.Division by zero
解决方法:运行前判断 如果除数为0,则不要计算
例:_start = ++_start % _max
改为: if(_max!=0) {
_start= ++_start%_max;
}else{_start = 0;}
五.Dead store 没用的对象
1.Value stored to 'XXX' is never read
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解决办法:注释截图04的代码,,city在后续并未使用,分配了内存,却一直未释放
类似这种错误,在代码很常见,比如你做某个需求的时候需要这个对象,但是后续改动后未使用,那么这个对象就一直存在。
2.Value stored to 'array' during its initialization is never read
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解决办法如图:
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六.Memory error
1.nil returned from a method that is expected to return a non-null value
类似这种错误,排除掉nil的情况。
尤其注意不要直接 return nil;
如:
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改为
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