在Kotlin中如何正确地将片段传递给FragmentManager.replace

Question

在我得到的最后一种方法中

Type mismatch: inferred type is android.support.v4.app.Fragment 
but android.app.Fragment! was expected

我不确定如何在Kotlin解决这个问题.

var fragment: Fragment = null
var fragmentClass: Class<*>? = null
fragmentClass = CardBackFragment::class.java
try {
    fragment = fragmentClass!!.newInstance() as Fragment
} catch (e: Exception) {
    e.printStackTrace()
}

fragmentManager
        .beginTransaction()
        .replace(R.id.flContent, fragment)

Answer 1

而不是使用fragmentManager,您需要使用supportFragmentManager.