将片段放入框架布局：片段的列表视图为空

Question

我尝试用片段填充 activity，但当我尝试加载片段时，片段的列表视图为空。我试图将 setContentView(R.layout.fragment) 添加到 activity，但出现错误，找不到视图。

这是我的activity主要代码的一部分

 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN)
        setContentView(R.layout.activity_main)
        val fragmentCourant: Fragment = Fragment()
        val fm: FragmentManager = supportFragmentManager//supportFragmentManager//getSupportFragmentManager()//supportFragmentManager
        val transaction: FragmentTransaction = fm.beginTransaction()
       transaction.replace(R.id.FrameLayout,fragmentCourant)
        transaction.commit()

这是我的片段的一部分

override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {

        val view=inflater?.inflate(R.layout.fragment,container,false)
        val button=view.findViewById<Button>(R.id.button)
        var listView = view.findViewById<ListView>(R.id.listView)
        listView.adapter=CustomAdapter(DataClass(),this)

谢谢。

Answer 1

解决方案：

    override fun onCreate(savedInstanceState: Bundle?) 
    {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN)

        val fragmentCourant = Fragment()
        fragmentCourant.arguments = intent.extras

        supportFragmentManager.beginTransaction()
            .add(R.id.FrameLayout, fragmentCourant)
            .commit()
    }

将片段放入框架布局：片段的列表视图为空

Putting a fragment into framelayout : fragment's listview is null

android

fragment

kotlin