团队冲刺第三天

今天进行了新闻各个分类的设计，主要是用技术是viewpage和tablayout。

通过使用viewpage和tablayout来实现各个分类之间的滑动。

import android.app.Activity;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;

import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;

import com.google.android.material.tabs.TabLayout;


public class TabLessActivity extends Fragment {
    private TabLayout tabLayout = null;

    private ViewPager viewPager;

    private Fragment[] mFragmentArrays = new Fragment[9];

    private String[] mTabTitles = new String[9];
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        //这个修改为对应子Fragment和父Fragment的布局文件
        View view = inflater.inflate(R.layout.tab_layout,null);
        tabLayout = (TabLayout) view.findViewById(R.id.tablayout);
        viewPager = (ViewPager) view.findViewById(R.id.tab_viewpager);
        initView();
        return view;
    }
    private void initView() {
        mTabTitles[0] = "推荐";
        mTabTitles[1] = "热点";
        mTabTitles[2] = "科技";
        mTabTitles[3] = "体育";
        mTabTitles[4] = "健康";
        mTabTitles[5] = "财经";
        mTabTitles[6] = "娱乐";
        mTabTitles[7] = "美食";
        mTabTitles[8] = "政法";
        tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
        //设置tablayout距离上下左右的距离
        //tab_title.setPadding(20,20,20,20);
        mFragmentArrays[0] = TabFragment.newInstance();
        mFragmentArrays[1] = TabFragment.newInstance();
        mFragmentArrays[2] = TabFragment.newInstance();
        mFragmentArrays[3] = TabFragment.newInstance();
        mFragmentArrays[4] = TabFragment.newInstance();
        mFragmentArrays[5] = TabFragment.newInstance();
        mFragmentArrays[6] = TabFragment.newInstance();
        mFragmentArrays[7] = TabFragment.newInstance();
        mFragmentArrays[8] = TabFragment.newInstance();
        PagerAdapter pagerAdapter = new MyViewPagerAdapter(getFragmentManager());
        viewPager.setAdapter(pagerAdapter);
        //将ViewPager和TabLayout绑定
        tabLayout.setupWithViewPager(viewPager);
    }
    final class MyViewPagerAdapter extends FragmentPagerAdapter {
        public MyViewPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            Bundle bundle=new Bundle();
            bundle.putInt("shuju",position);
            mFragmentArrays[position].setArguments(bundle);
            return mFragmentArrays[position];
        }
        @Override
        public int getCount() {
            return mFragmentArrays.length;
        }
        @Override
        public CharSequence getPageTitle(int position) {
            return mTabTitles[position];

        }
    }
    @Override
    public void onPause() {
        super.onPause();
    }

 采用了Activity中调用Fragment，Fragment中嵌套Fragment的方法，

明天会对每个分类中的内容进行设计