仿今日头条的频道管理+Tablayout+viewpager+动态fragment传值

首先在主 build.gradle

allprojects {
    repositories {
        google()
        maven {url "https://jitpack.io"}
        jcenter()
    }
}

项目的build.gradle

compile 'com.github.andyoom:draggrid:v1.0.1'
implementation 'com.android.support:design:26.0.0-alpha1'

package hongliang.com.channelmanagement;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.Toast;

import com.andy.library.ChannelActivity;
import com.andy.library.ChannelBean;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import java.lang.reflect.Type;
import java.util.ArrayList;


public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private TabLayout mMytab;
    private ImageButton mImgBtn;
    private ArrayList<ChannelBean> channelBeens;
    String jsonStr = "";
    private Gson gson;
    private ViewPager vp;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initData();
        vpsp vpsp = new vpsp(getSupportFragmentManager());
        vp.setAdapter(vpsp);
        mMytab.setupWithViewPager(vp);
    }
    private void initData(){
        //准备栏目数据
        channelBeens = new ArrayList<ChannelBean>();
        channelBeens.add(new ChannelBean("热点",true));
        channelBeens.add(new ChannelBean("军事",true));
        channelBeens.add(new ChannelBean("八卦",true));
        channelBeens.add(new ChannelBean("游戏",true));
        channelBeens.add(new ChannelBean("宠物",true));
        channelBeens.add(new ChannelBean("汽车",true));
        channelBeens.add(new ChannelBean("热卖",true));
        channelBeens.add(new ChannelBean("外卖",true));
        channelBeens.add(new ChannelBean("条目1",true));
        channelBeens.add(new ChannelBean("条目2",true));
        channelBeens.add(new ChannelBean("条目3",false));
        channelBeens.add(new ChannelBean("条目4",false));
        channelBeens.add(new ChannelBean("条目5",false));
        channelBeens.add(new ChannelBean("条目6",false));
        channelBeens.add(new ChannelBean("条目7",false));
        channelBeens.add(new ChannelBean("条目8",false));
        //把选择的栏目（true）数据配置给tablayout
        for (int i=0;i<channelBeens.size();i++){
            if(channelBeens.get(i).isSelect()){
                mMytab.addTab(mMytab.newTab().setText(channelBeens.get(i).getName()));
            }
        }

    }

    private void initView() {
        mMytab = (TabLayout) findViewById(R.id.mytab);
        mImgBtn = (ImageButton) findViewById(R.id.imgBtn);
        mImgBtn.setOnClickListener(this);
        vp = (ViewPager) findViewById(R.id.vp);

    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {

            case R.id.imgBtn:
                ChannelActivity.startChannelActivity(MainActivity.this,channelBeens);
                break;
            default:
                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == ChannelActivity.REQUEST_CODE && resultCode == ChannelActivity.RESULT_CODE){//为true表示是频道管理回调回来的
            jsonStr = data.getStringExtra(ChannelActivity.RESULT_JSON_KEY);//得到栏目管理的结果
            Toast.makeText(this,jsonStr,Toast.LENGTH_SHORT).show();
            Log.i("main",jsonStr);
            mMytab.removeAllTabs();//清空之前的栏目
            //把新选择的栏目结果更新到tablayout上
            gson = new Gson();
            //进行json解析
            Type type= new TypeToken<ArrayList<ChannelBean>>(){}.getType();
            channelBeens = gson.fromJson(jsonStr,type);
            //遍历结果，更新tablayout
            for (int i=0;i<channelBeens.size();i++){
                if(channelBeens.get(i).isSelect()){
                    mMytab.addTab(mMytab.newTab().setText(channelBeens.get(i).getName()));
                }
            }
        }
    }
    class vpsp extends FragmentPagerAdapter {
        //有参数的构造
        public vpsp(FragmentManager fm) {
            super(fm);
        }
        //返回选项卡的文本 ，，，添加选项卡
        @Override
        public CharSequence getPageTitle(int position) {
            return channelBeens.get(position).getName();
        }
        //创建fragment对象并返回
        @Override
        public Fragment getItem(int position) {
            content content = new content();
            Bundle bundle = new Bundle();
            bundle.putString("name",channelBeens.get(position).getName());
            content.setArguments(bundle);
            return content;
        }
        //返回数量
        @Override
        public int getCount() {
            return channelBeens.size();
        }
    }
}

扫描二维码关注公众号，回复： 1518710 查看本文章

package hongliang.com.channelmanagement;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

/**
 * Created by 知足 on 2018/3/14.
 */

public class content extends Fragment {
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View inflate = View.inflate(getActivity(), R.layout.contentlayout, null);
        TextView cte = inflate.findViewById(R.id.cte);
        Bundle arguments = getArguments();
        String name = arguments.getString("name");

        Log.e("chen", "onCreateView: ------"+name );
        cte.setText(name);
        return inflate;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="hongliang.com.channelmanagement.MainActivity">

    <android.support.design.widget.TabLayout
        android:id="@+id/mytab"
        app:tabMode="scrollable"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />

    <android.support.v4.view.ViewPager
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/vp"
        ></android.support.v4.view.ViewPager>

    <ImageButton
        android:id="@+id/imgBtn"
        android:src="@mipmap/ic_launcher"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <TextView
        android:id="@+id/cte"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="dfxcvnxcv"
        android:textColor="@color/colorAccent"/>
</LinearLayout>

到这代码就已经全部奉献了