IllegalArgumentException: Map has no value for 2
时间: 2023-12-05 11:47:34 浏览: 56
这个异常通常是因为你尝试从一个Map中获取一个不存在的键的值。在这种情况下,键为2的值在Map中不存在。你可以在使用get方法之前先使用containsKey方法来检查Map中是否存在该键,以避免出现此异常。如果你确定该键应该存在,那么可能是在添加键值对时出现了问题,你可以检查一下是否正确地添加了键值对。
相关问题
java.lang.IllegalArgumentException: Map has no value for '"errcode"'
This error message indicates that you are trying to access a value in a map using a key that does not exist in the map. Specifically, you are trying to access the value associated with the key "errcode", but that key is not present in the map.
To resolve this error, you should first verify that the key "errcode" actually exists in the map. You can do this by printing out the contents of the map and checking if the key is present.
If the key does not exist, you may need to modify your code to add it to the map before trying to access its value. Alternatively, if the key is optional, you can check if it exists before trying to access its value, using the containsKey() method.
illegalargumentexception: no view found for id
这个错误意味着在代码中尝试访问一个不存在的视图。可能是因为你尝试访问一个不存在的视图 ID,或者该视图已经被销毁。你需要检查一下代码中访问视图的部分,确保正确地引用了视图 ID,并且确保该视图已经正确地初始化和创建。