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如何获得 np1-np6 的值xxxViewModel.class

我可以得到 np 的值xxxFragment.class,但代码验证属于视图模型。

中的代码 xxxViewModel.class

class NewCodeViewModel(application: Application) : AndroidViewModel(application) {
    var np1 = 0
    var np2 = 0
    var np3 = 0
    var np4 = 0
    var np5 = 0
    var np6 = 0

    fun code() {
        // how to get np.value in ViewModel.class?
        val code = np1 + np2 + np3 + np4 + np5 + np6
        // I will verify if the code is valid to decide a button's clickable status using LiveData
    }
    ...
}
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