kotlin
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.tabs.TabLayout
android:id="@+id/tab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:tabTextAppearance="@style/myTab"
style="@style/myTabLayout"
tools:ignore="SpeakableTextPresentCheck" />
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/vp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tab" />
</androidx.constraintlayout.widget.ConstraintLayout>
kotlin
package com.example.myapplication
import android.os.Bundle
import android.view.View
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import androidx.lifecycle.Lifecycle
import androidx.recyclerview.widget.RecyclerView
import androidx.viewpager2.adapter.FragmentStateAdapter
import com.example.myapplication.databinding.TestVp2Binding
import com.google.android.material.tabs.TabLayoutMediator
class VP2Demo : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val inflate = TestVp2Binding.inflate(layoutInflater)
setContentView(inflate.root)
val mutableListOf = mutableListOf<Fragment>()
val fragment = Fragment(R.layout.test_a)
val fragment2 = Fragment(R.layout.test_view)
val fragment3 = Fragment(R.layout.test_net)
val childAt = inflate.vp.getChildAt(0)
(childAt as? RecyclerView)?.setOverScrollMode(View.OVER_SCROLL_NEVER)
mutableListOf.add(fragment)
mutableListOf.add(fragment2)
mutableListOf.add(fragment3)
inflate.vp.adapter = MyVpAdapter(mutableListOf, supportFragmentManager, lifecycle)
val titles = mutableListOf<String>()
titles.add("新闻")
titles.add("新闻2")
titles.add("新闻3")
TabLayoutMediator(
inflate.tab, inflate.vp
) { p0, index ->
run {
p0.setText(titles[index])
p0.setIcon(R.drawable.zc)
if(index==1){
val textView = TextView(baseContext)
textView.text = "我是自定义的标签哈哈~~~"
p0.setCustomView(textView)
}
}
}.attach()
}
class MyVpAdapter(list: MutableList<Fragment>, fm: FragmentManager, lf: Lifecycle) :
FragmentStateAdapter(fm, lf) {
private var listS = emptyList<Fragment>()
init {
listS = list
}
override fun getItemCount(): Int {
return listS.size
}
override fun createFragment(position: Int): Fragment {
return listS[position]
}
}
}
kotlin
<style name="myTab" parent="@android:style/TextAppearance.Widget.TabWidget">
<item name="textAllCaps">false</item>
<item name="android:textSize">30sp</item>
</style>
<style name="myTabLayout" parent="Widget.Design.TabLayout">
<item name="tabIndicatorColor">#00FF00</item>
<item name="tabSelectedTextColor">#FF0000</item>
<item name="tabTextColor">#0000FF</item>
<item name="tabRippleColor">@color/yellow</item>
</style>