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

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

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();
}
}
}

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>