在ActionMode上显示ActionMode

Question

我有一个列表活动，其中用户可以执行打开操作模式a和B。用户还可以打开操作模式A，然后在其顶部打开B。

动作模式A实际上是搜索动作模式，用户可以从中选择打开动作模式B的结果（如果这有助于理解的话）。

Answer 1

我认为我通过从动作模式B的onDestroyActionMode中的postDelayed（）达到了所需的行为。这不是一个很好的解决方案，但它是有效的。

我的代码段：

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        listView.onItemClickListener = AdapterView.OnItemClickListener { adapterView, view, p2, p3 ->
            startActionModeA()
            true
        }
    }

    var actionModeA: ActionMode? = null

    val actionModeCallbackA = object : ActionMode.Callback {
        override fun onActionItemClicked(mode: ActionMode?, p1: MenuItem?): Boolean {
            Log.wtf("ACTION MODE", "onActionItemClicked")
            actionModeB = startActionMode(actionModeCallbackB)
            return true
        }

        override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {
            Log.wtf("ACTION MODE", "onCreateActionMode")
            val inflater = mode?.getMenuInflater()
            inflater?.inflate(R.menu.context_menu, menu)
            return true
        }

        override fun onPrepareActionMode(p0: ActionMode?, p1: Menu?): Boolean {
            Log.wtf("ACTION MODE", "onPrepareActionMode")
            return false
        }

        override fun onDestroyActionMode(p0: ActionMode?) {
            Log.wtf("ACTION MODE", "onDestroyActionMode")
            actionModeA = null
        }


    }
    var actionModeB: ActionMode? = null

    val actionModeCallbackB = object : ActionMode.Callback {
        override fun onActionItemClicked(mode: ActionMode?, p1: MenuItem?): Boolean {
            Log.wtf("ACTION MODE 2", "onActionItemClicked")
            return true
        }

        override fun onCreateActionMode(mode: ActionMode?, menu: Menu?): Boolean {
            Log.wtf("ACTION MODE 2", "onCreateActionMode")
            val inflater = mode?.getMenuInflater()
            inflater?.inflate(R.menu.context_menu2, menu)
            return true
        }

        override fun onPrepareActionMode(p0: ActionMode?, p1: Menu?): Boolean {
            Log.wtf("ACTION MODE 2", "onPrepareActionMode")
            return false
        }

        override fun onDestroyActionMode(mode: ActionMode?) {
            Log.wtf("ACTION MODE 2", "onDestroyActionMode")
            actionModeB = null
            listView.postDelayed({
                startActionModeA()
            }, 100)
        }
    }

    private fun startActionModeA() {
        actionModeA = startActionMode(actionModeCallbackA)
    }