Android：从UI线程刷新视图(Android: Refreshing view from UI thread)

 基本问题，但我尝试解决它失败了 
 
 我的活动包含以下内容 
 
override def onCreate(savedInstanceState: Bundle) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.match_list_view)
 val listView = findViewById(R.id.matchListView).asInstanceOf[ListView]
 listView.setAdapter(new MatchListViewAdapter(MatchDao.retrieveAllMatches(), this, listView))
 
 } 
 
 它显示ListView中的匹配列表 
 
 然后我的适配器在其getView方法中包含以下逻辑用于单个匹配： 
 
val deleteButton = updatedView.findViewById(R.id.deleteIndividualMatchButton).asInstanceOf[Button]
    deleteButton.setOnClickListener(new OnClickListener {
      override def onClick(v: View) {
        new DeleteMatchDialogFragment(getItem(position), MatchListViewAdapter.this).show(activity.getFragmentManager, "DeleteFragment"
      }
    })
 
 然后我的DeleteMatchDialogFragment包含以下逻辑： 
 
override def onCreateDialog(savedInstanceState: Bundle): Dialog = {
    createDialog(null, R.string.deleteMatch, R.string.ok, {
      MatchDao.delete(matchToDelete)
      adapter.notifyDataSetInvalidated()
    })
  }
 
 所以基本上在ListView ，我有一个匹配列表，每个匹配都有一个删除按钮。 当用户单击“删除”按钮时，我希望从数据库中删除匹配项，然后刷新ListView 。 
 
 一切都工作正常，除了视图没有刷新。 我也尝试将view.invalidate()添加到DeleteMatchDialogFragment但也没有运气。 
 
 我需要做什么？ 

Basic question, but my attempts to resolve it have failed
 
My activity contains the following 
 
override def onCreate(savedInstanceState: Bundle) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.match_list_view)
 val listView = findViewById(R.id.matchListView).asInstanceOf[ListView]
 listView.setAdapter(new MatchListViewAdapter(MatchDao.retrieveAllMatches(), this, listView))
 
}
 
which displays a list of matches in a ListView
 
My adapter then contains the following logic in its getView method for an individual match:
 
val deleteButton = updatedView.findViewById(R.id.deleteIndividualMatchButton).asInstanceOf[Button]
    deleteButton.setOnClickListener(new OnClickListener {
      override def onClick(v: View) {
        new DeleteMatchDialogFragment(getItem(position), MatchListViewAdapter.this).show(activity.getFragmentManager, "DeleteFragment"
      }
    })
 
My DeleteMatchDialogFragment then contains the following logic:
 
override def onCreateDialog(savedInstanceState: Bundle): Dialog = {
    createDialog(null, R.string.deleteMatch, R.string.ok, {
      MatchDao.delete(matchToDelete)
      adapter.notifyDataSetInvalidated()
    })
  }
 
So basically in the ListView, I have a list of Matches and each one has a Delete button opposite it. When the user clicks the Delete button I wish to delete the match from the database and then refresh the ListView.
 
Everything is working fine, except that the view is not refreshed. I also tried adding view.invalidate() to the DeleteMatchDialogFragment but no luck either.
 
What do I need to do here?

原文：https://stackoverflow.com/questions/28641766