java.lang.IllegalStateException: Required DataBindingComponent is null in class FragmentLoginBindingImpl. A BindingAdapter in com.joe.jetpackdemo.viewmodel.LoginModel is not static and requires an object to use, retrieved from the DataBindingComponent. If you don't use an inflation method taking a DataBindingComponent, use DataBindingUtil.setDefaultComponent or make all BindingAdapter methods static.

[JeeseC]

如题所示，出现了这个问题。
运行程序，点击“Have a account? Login”这个按钮，就报错闪退了。

[mCyp]

抱歉，现在才看到你的问题，是不是LoginModel中@BindingAdapter改成这样使用就可以：

    companion object {
        @JvmStatic
        @BindingAdapter("addTextChangedListener")
        fun addTextChangedListener(editText: EditText, simpleWatcher: SimpleWatcher) {
            editText.addTextChangedListener(simpleWatcher)
        }
    }