抱歉,我不能将图像直接发布到该帖子上,因为它说我必须至少具有10个声誉才能发布。
我像这样在android studio中创建了一个xmlXml
并在视图模型内部创建了2个这样的变量
private val _loadingText = MutableLiveData<String>()
val loadingText: LiveData<String> = _loadingText
然后将这样的数据绑定实现到我的对话框视图中
val dialogView = layoutInflater.inflate(R.layout.dialog_custom_loading, dialog_root)
val binding = DialogCustomLoadingBinding.inflate(layoutInflater, dialogView as ViewGroup, false)
binding.viewModel = viewModel
loading = Dialog(this)
loading.setContentView(binding.root)
但是当我运行代码时,它显示了这样的错误
而且我不知道如何解决。请帮助我。.
更新:当我使用--stacktrace运行时我仍然不知道这是什么错误。
The expression 'viewModelLoadingText.getValue()' cannot be inverted, so it cannot be used in a two-way binding
Details: There is no inverse for method getValue, you must add an @InverseMethod annotation to the method to indicate which method should be used when using it in two-way binding expressions
抱歉,我不能将图像直接发布到该帖子上,因为它说我必须具有至少10个声誉才能发布。我像这样的Xml在android studio中创建了一个xml,并在其中创建了2个变量...
您正在使用双向数据绑定,在此位置不正确。
[请尝试使用此代码以通过自定义对话框实现数据绑定。对我来说很好[]
private fun showAddContactDialog() {
dialog= Dialog(this)
dialog.setCancelable(true)
dialog.setCanceledOnTouchOutside(true)
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
Objects.requireNonNull(dialog.window)!!.setBackgroundDrawable(
ColorDrawable(Color.TRANSPARENT)
)
dialog.window!!.setGravity(Gravity.CENTER)
val dialogAddNotesBinding:DialogAddNotesBinding =DataBindingUtil.inflate(LayoutInflater.from(this),R.layout.dialog_add_notes,null,false)
homeViewModel= ViewModelProviders.of(this).get(HomeViewModel::class.java)
dialogAddNotesBinding.homeModel=homeViewModel
homeViewModel.addNewContactListener=this
dialog.setContentView(dialogAddNotesBinding.root)
val window = dialog.window
window!!.setLayout(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT
)
dialog.show()
}