我喜欢ButterKnife中@OnClick属性的可读性:因此,即使在Kotlin中,我也正在使用它。不幸的是,单击处理程序并没有在我单击时被解雇。我想念什么吗?要在Kotlin中集成点击侦听器,我需要做些什么吗?

片段:

import kotlinx.android.synthetic.main.fragment_profile.*

class ProfileFragment : Fragment() {

    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?,
                              savedInstanceState: Bundle?): View? {
        val view = inflater!!.inflate(R.layout.fragment_profile, container, false)
        ButterKnife.bind(this, view)


        return view
    }

    companion object {
        fun newInstance(): ProfileFragment {
            return ProfileFragment()
        }
    }

    @OnClick(R.id.fab)
    public fun onFab() {
        Toast.makeText(activity, "ABC", Toast.LENGTH_LONG).show()
        Snackbar.make(container, "Hey there!", Snackbar.LENGTH_LONG).show()
    }
}

布局
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="300dp">

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="16dp"
    android:layout_gravity="bottom|right|end"
    android:src="@drawable/ic_edit"
    app:fabSize="normal"
    app:elevation="6dp"
    app:pressedTranslationZ="12dp"/>

</android.support.design.widget.CoordinatorLayout>

最佳答案

你为什么不这样做呢?

// get reference to button
val btn_click_me = findViewById(R.id.btn_click_me) as Button
// set on-click listener
btn_click_me.setOnClickListener {
    // your code to perform when the user clicks on the button
    Toast.makeText(this@MainActivity, "You clicked me.", Toast.LENGTH_SHORT).show()
}

08-28 14:31