assistant-android/app/src/main/java/com/gh/gamecenter/kaifu/KaiFuFragment.java

package com.gh.gamecenter.kaifu;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.widget.CheckedTextView;
import android.widget.LinearLayout;

import com.gh.base.AppController;
import com.gh.base.adapter.FragmentAdapter;
import com.gh.base.fragment.BaseFragment;
import com.gh.gamecenter.R;

import java.util.ArrayList;
import java.util.List;

import butterknife.BindView;
import butterknife.OnClick;

/**
 * Created by khy on 20/08/17.
 */

public class KaiFuFragment extends BaseFragment {

    @BindView(R.id.kaifu_tabbar_today)
    CheckedTextView mKaifuTabbarToday;
    @BindView(R.id.kaifu_tabbar_tomorrow)
    CheckedTextView mKaifuTabbarTomorrow;
    @BindView(R.id.kaifu_tabbar_future)
    CheckedTextView mKaifuTabbarFuture;
    @BindView(R.id.kaifu_tabbar)
    LinearLayout mKaifuTabbar;
    @BindView(R.id.kaifu_content_vp)
    ViewPager mKaifuContentVp;

    private List<Fragment> mFragments;


    @Override
    protected int getLayoutId() {
        return R.layout.fragment_kaifu;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mFragments = new ArrayList<>();
        for (int i = 0; i < 3; i++) {
            KaiFuVpFragment kaiFuVpFragment = new KaiFuVpFragment();
            Bundle arguments;
            if (getArguments() != null) {
                arguments = (Bundle) getArguments().clone();
            } else {
                arguments = new Bundle();
            }
            String day;
            switch (i) {
                case 0:
                    day = "today";
                    break;
                case 1:
                    day = "tomorrow";
                    break;
                default:
                    day = "after";
                    break;
            }
            arguments.putString("day", day);
            kaiFuVpFragment.setArguments(arguments);
            mFragments.add(kaiFuVpFragment);
        }
        FragmentAdapter fragmentAdapter = new FragmentAdapter(getChildFragmentManager(), mFragments);

        setTabbarPosition(0);
        mKaifuContentVp.setAdapter(fragmentAdapter);
        mKaifuContentVp.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }

            @Override
            public void onPageSelected(int position) {
                setTabbarPosition(position);
            }

            @Override
            public void onPageScrollStateChanged(final int state) {
                setPageScrollState(state);
            }
        });
    }

    @Override
    public void onPause() {
        super.onPause();
        for (Fragment fragment : mFragments) {
            fragment.onPause();
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        for (Fragment fragment : mFragments) {
            fragment.onResume();
        }
    }

    @OnClick({R.id.kaifu_tabbar_today, R.id.kaifu_tabbar_tomorrow, R.id.kaifu_tabbar_future})
    public void onViewClicked(View view) {
        int index = 0;
        switch (view.getId()) {
            case R.id.kaifu_tabbar_today:
                index = 0;
                break;
            case R.id.kaifu_tabbar_tomorrow:
                index = 1;
                break;
            case R.id.kaifu_tabbar_future:
                index = 2;
                break;
        }

        setTabbarPosition(index);
        mKaifuContentVp.setCurrentItem(index);
        setPageScrollState(1);
    }

    private void setPageScrollState(final int state) {
        AppController.MAIN_EXECUTOR.execute(new Runnable() {
            @Override
            public void run() {
                for (Fragment fragment : mFragments) {
                    if (fragment.getUserVisibleHint() && fragment instanceof KaiFuVpFragment) {
                        ((KaiFuVpFragment) fragment).vpScrollState(state);
                    }
                }
            }
        });
    }

    private void setTabbarPosition(int index) {
        switch (index) {
            case 0:
                mKaifuTabbarToday.setChecked(true);
                mKaifuTabbarFuture.setChecked(false);
                mKaifuTabbarTomorrow.setChecked(false);
                break;
            case 1:
                mKaifuTabbarToday.setChecked(false);
                mKaifuTabbarFuture.setChecked(false);
                mKaifuTabbarTomorrow.setChecked(true);
                break;
            case 2:
                mKaifuTabbarToday.setChecked(false);
                mKaifuTabbarFuture.setChecked(true);
                mKaifuTabbarTomorrow.setChecked(false);
                break;
        }
    }
}