TabLayout+ViewPager2的联合使用
Posted kaolagirl
tags:
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在android项目开发中，点击文字标签可以切换到相对应的内容的这种需求还是很常见的，实现效果看下图。
下面的话就来介绍下两种方式，第一种的话是我最初的时候自己自定义的，直至发现了TabLayout这个控件，然后就转用了TabLayout+ViewPager2，虽然第一种不用了但还是想把它记录下来。
一. 自定义tab标题栏+ViewPager2实现
<LinearLayout 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"
tools:context=".mime.order.my_order.MyOrder"
android:orientation="vertical">
<include layout="@layout/classify_head" /> //标题栏
<LinearLayout //tab文字标签栏
android:id="@+id/tab_container"
android:layout_gravity="top"
android:background="@drawable/order_tab_default_border"
android:paddingRight="6dp"
android:paddingLeft="6dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="40dp">
<TextView
android:id="@+id/tab1"
android:text="全部"
android:textColor="@drawable/order_tab_tv"
android:gravity="center"
android:layout_weight="1.0"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
<TextView
android:id="@+id/tab2"
android:text="待付款"
android:textColor="@drawable/order_tab_tv"
android:gravity="center"
android:layout_weight="1.0"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
<TextView
android:id="@+id/tab3"
android:text="待发货"
android:textColor="@drawable/order_tab_tv"
android:gravity="center"
android:layout_weight="1.0"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
<TextView
android:id="@+id/tab4"
android:text="待收货"
android:textColor="@drawable/order_tab_tv"
android:gravity="center"
android:layout_weight="1.0"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
<TextView
android:id="@+id/tab5"
android:text="已完成"
android:textColor="@drawable/order_tab_tv"
android:gravity="center"
android:layout_weight="1.0"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
</LinearLayout>
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/myOrder_vp"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
public class MyOrder extends AppCompatActivity implements View.OnClickListener{
private static final String TAG = "春加福";
private ViewPager2 myOrder_vp;
private List<Fragment> list = new ArrayList<>();
private TextView tab1,tab2,tab3,tab4,tab5,tab_current;
private LinearLayout head_search;
private TextView default_tv;
private int order_code;
private String txt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_order);
if(getIntent() !=null){
order_code = getIntent().getIntExtra("order_code",0);
txt = getIntent().getStringExtra("txt");
}
initView();
initTab();
}
/**
* todo initView 初始化控件
*/
private void initView() {
tab1 = findViewById(R.id.tab1);
tab2 = findViewById(R.id.tab2);
tab3 = findViewById(R.id.tab3);
tab4 = findViewById(R.id.tab4);
tab5 = findViewById(R.id.tab5);
myOrder_vp = findViewById(R.id.myOrder_vp);
head_search = findViewById(R.id.head_search);
//wang添加 2021/7/13
default_tv = findViewById(R.id.default_tv);
default_tv.setText("搜索订单");
default_tv.setVisibility(View.VISIBLE);
head_search.setOnClickListener(this);
initPager();
}
/**
* todo initTab 初始化 顶部导航栏，并设置点击监听
*/
private void initTab() {
switch (txt.toString()){
case "全部":
Log.i(TAG, "initTab: 1"+txt);
tab1.setSelected(true);
tab_current = tab1;
tab1.setBackgroundResource(R.drawable.order_tab_active_border); //设置tab1当前背景
myOrder_vp.setCurrentItem(0,true);
break;
case "待付款":
tab2.setSelected(true);
tab_current = tab2;
tab2.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(1,true);
break;
case "待发货":
tab3.setSelected(true);
tab_current = tab3;
tab3.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(2,true);
break;
case "待收货":
tab4.setSelected(true);
tab_current = tab4;
tab4.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(3,true);
break;
case "已完成":
tab5.setSelected(true);
tab_current = tab5;
tab5.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(4,true);
break;
default:
tab1.setSelected(true);
tab_current = tab1;
tab1.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(0,true);
break;
}
tab1.setOnClickListener(this);
tab2.setOnClickListener(this);
tab3.setOnClickListener(this);
tab4.setOnClickListener(this);
tab5.setOnClickListener(this);
}
/**
* todo 初始化 ViewPager2
*/
private void initPager() {
list.add(MyOrderFragment.newInstance(99,1));
list.add(MyOrderFragment.newInstance(1,1));
list.add(MyOrderFragment.newInstance(2,1));
list.add(MyOrderFragment.newInstance(3,1));
list.add(MyOrderFragment.newInstance(98,1));
MyOrderAdapter myOrderAdapter = new MyOrderAdapter(getSupportFragmentManager(),getLifecycle(),list);
myOrder_vp.setAdapter(myOrderAdapter);
myOrder_vp.setOffscreenPageLimit(5); //预加载页面数
//禁止左右滑动
myOrder_vp.setUserInputEnabled(true);
//滑动监听
myOrder_vp.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
@Override
public void onPageSelected(int position) {
super.onPageSelected(position);
pageChange(position);
}
});
}
/**
* todo 自定义方法，作为滑动监听事件
* @param position
*/
private void pageChange(int position) {
tab_current.setSelected(false);
switch (position){
case R.id.tab1:
clearBack();
tab1.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(0,false);
break;
case 0:
clearBack();
tab1.setBackgroundResource(R.drawable.order_tab_active_border);
tab1.setSelected(true);
tab_current = tab1;
break;
case R.id.tab2:
clearBack();
tab2.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(1,false);
break;
case 1:
clearBack();
tab2.setBackgroundResource(R.drawable.order_tab_active_border);
tab2.setSelected(true);
tab_current = tab2;
break;
case R.id.tab3:
clearBack();
tab3.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(2,false);
break;
case 2:
clearBack();
tab3.setBackgroundResource(R.drawable.order_tab_active_border);
tab3.setSelected(true);
tab_current = tab3;
break;
case R.id.tab4:
clearBack();
tab4.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(3,false);
break;
case 3:
clearBack();
tab4.setBackgroundResource(R.drawable.order_tab_active_border);
tab4.setSelected(true);
tab_current = tab4;
break;
case R.id.tab5:
clearBack();
tab5.setBackgroundResource(R.drawable.order_tab_active_border);
myOrder_vp.setCurrentItem(4,false);
break;
case 4:
clearBack();
tab5.setBackgroundResource(R.drawable.order_tab_active_border);
tab5.setSelected(true);
tab_current = tab5;
break;
case R.id.head_search:
startActivity(new Intent(MyOrder.this, OrderSearch.class));
break;
}
}
/**
* todo 清除背景
*/
private void clearBack() {
tab1.setBackgroundResource(R.drawable.order_tab_default_border);
tab2.setBackgroundResource(R.drawable.order_tab_default_border);
tab3.setBackgroundResource(R.drawable.order_tab_default_border);
tab4.setBackgroundResource(R.drawable.order_tab_default_border);
tab5.setBackgroundResource(R.drawable.order_tab_default_border);
}
@Override
public void onClick(View v) {
pageChange(v.getId());
}
}
二. TabLayout + ViewPager2实现
TabLayout详细介绍可查看 TabLayou的简单用法
<LinearLayout 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"
tools:context=".mime.order.my_order.MyOrder"
android:orientation="vertical">
<include layout="@layout/classify_head" />
//tabLayout
<com.google.android.material.tabs.TabLayout
android:id="@+id/tab_layout"
android:background="@color/white"
app:tabTextColor="@color/theme_defaultText"
app:tabSelectedTextColor="@color/theme_color"
app:tabIndicatorColor="@color/theme_color"
app:tabIndicatorHeight="2dp"
android:layout_width="match_parent"
android:layout_height="40dp"/>
//ViewPager2
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/myOrder_vp"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
private TabLayout tabLayout;
private String[] tabTitle_list={"全部","待付款","待发货","待收货","已完成"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_order);
if(getIntent() !=null){
order_code = getIntent().getIntExtra("order_code",0);
txt = getIntent().getStringExtra("txt");
}
initView();
}
/**
* todo initView 初始化控件
*/
private void initView() {
tabLayout = findViewById(R.id.tab_layout);
myOrder_vp = findViewById(R.id.myOrder_vp);
head_search = findViewById(R.id.head_search);
//wang添加 2021/7/13
default_tv = findViewById(R.id.default_tv);
default_tv.setText("搜索订单");
default_tv.setVisibility(View.VISIBLE);
head_search.setOnClickListener(this);
initPager();
}
/**
* todo 初始化 ViewPager2
*/
private void initPager() {
list.add(MyOrderFragment.newInstance(99,1));
list.add(MyOrderFragment.newInstance(1,1));
list.add(MyOrderFragment.newInstance(2,1));
list.add(MyOrderFragment.newInstance(3,1));
list.add(MyOrderFragment.newInstance(98,1));
MyOrderAdapter myOrderAdapter = new MyOrderAdapter(getSupportFragmentManager(),getLifecycle(),list);
myOrder_vp.setAdapter(myOrderAdapter);
myOrder_vp.setOffscreenPageLimit(5); //预加载页面数
//禁止左右滑动,false为禁止
myOrder_vp.setUserInputEnabled(true);
//这里必须要在添加适配器完了之后才能新建该方法
new TabLayoutMediator(tabLayout, myOrder_vp, new TabLayoutMediator.TabConfigurationStrategy() {
@Override
public void onConfigureTab(@NonNull TabLayout.Tab tab, int position) {
//就是将标题内容分别相对应的赋值
tab.setText(tabTitle_list[position]);
}
}).attach(); //最后一定要.attach()
}
//适配器
public class MyOrderAdapter extends FragmentStateAdapter {
private List<Fragment> list = new ArrayList<>();
public MyOrderAdapter(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle ,List<Fragment> list) {
super(fragmentManager, lifecycle);
this.list = list;
}
@NonNull
@Override
public Fragment createFragment(int position) {
return list.get(position);
}
@Override
public int getItemCount() {
return list.size();
}
}
``
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