Tablayout和Viewpager切换

依赖

    implementation 'com.flyco.tablayout:FlycoTabLayout_Lib:2.1.2@aar'

    implementation 'com.jakewharton:butterknife:8.8.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

布局

主页面

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;

import com.flyco.tablayout.SlidingTabLayout;

import java.util.ArrayList;

import butterknife.BindView;
import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.vp_main)
    ViewPager vpMain;
    @BindView(R.id.sil)
    SlidingTabLayout sil;
    private ArrayList fragments;
    private String[] a = new String[]{"未支付账单", "支付中账单", "历史账单"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        fragments = new ArrayList<>();
        fragments.add(new OneFragment());
        fragments.add(new TwoFragment());
        fragments.add(new ThreeFragment());
          sil.setViewPager(vpMain,a,this,fragments);
    }
}