今日頭條頻道管理細緻程式碼

阿新 • • 發佈：2018-12-11

//佈局點選進入頻道管理頁面
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.bwei.www.channelonly.MainActivity">

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="50dp">

        <android.support.design.widget.TabLayout
            android:layout_weight="1"
            android:layout_width="0dp"
            android:layout_height="50dp"
            android:id="@+id/tbl"
            ></android.support.design.widget.TabLayout>
<ImageView

    android:id="@+id/show_all"
    android:src="@drawable/btn_add"

    android:layout_width="30dp"
    android:layout_height="30dp" />

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

    </android.support.v4.view.ViewPager>

</LinearLayout>

//Activity頁面


import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;

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

public class MainActivity extends AppCompatActivity {

    private TabLayout tbl;
    private ImageView showAll;
    private ViewPager vp;
    private List<String> stringList;
    private List<Fragment> fragmentList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tbl = findViewById(R.id.tbl);
        showAll = findViewById(R.id.show_all);
        vp = findViewById(R.id.vp);

        stringList = new ArrayList<>();
        stringList.add("頭條");
        stringList.add("社會");
        stringList.add("國內");
        stringList.add("國際");
        stringList.add("娛樂");
        stringList.add("體育");
        stringList.add("軍事");
        stringList.add("科技");
        stringList.add("財經");
        stringList.add("時尚");

        tbl.setTabMode(TabLayout.MODE_SCROLLABLE);
        fragmentList = new ArrayList<>();

        for (String s : stringList) {
            tbl.addTab(tbl.newTab().setText(s));
        }
        vp.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int position) {
                return fragmentList.get(position);
            }

            @Override
            public int getCount() {
                return fragmentList.size();
            }

            @Nullable
            @Override
            public CharSequence getPageTitle(int position) {
                return super.getPageTitle(position);
            }
        });
        tbl.setupWithViewPager(vp);
        final ArrayList<String> arrayList = new ArrayList<>();
        arrayList.addAll(stringList);
        //點選加號  跳轉頻道管理頁面
        showAll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,ChannelActivity.class);
                Bundle bundle = new Bundle();
                bundle.putStringArrayList("array",arrayList);
                intent.putExtras(bundle);
                startActivity(intent);
            }
        });


    }
}

//建立一個佈局頁面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.bwei.www.channelonly.ChannelActivity">

    <Button
        android:text="完成"
        android:textSize="20sp"
        android:id="@+id/btn_finish"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:padding="20dp"
            android:textSize="20sp"
            android:text="我的頻道"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/txt_edit"
            android:textSize="20sp"
            android:gravity="center"

            android:layout_alignParentRight="true"
            android:textColor="#000000"
            android:layout_width="wrap_content"
            android:text="編輯"
            android:paddingRight="15sp"
            android:layout_height="wrap_content" />

    </RelativeLayout>

    <GridView
        android:padding="20dp"
        android:id="@+id/mygvChannel"
        android:horizontalSpacing="10dp"
        android:numColumns="4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

    </GridView>

    <TextView
        android:text="頻道推薦"
        android:textSize="20sp"
        android:padding="15dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <GridView
        android:padding="20dp"
        android:id="@+id/othergvChannel"
        android:numColumns="4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></GridView>
</LinearLayout>

//寫兩個介面卡

//我的


import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.GridView;
import android.widget.TextView;

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

public class ChannelActivity extends AppCompatActivity implements View.OnClickListener {

    private Button btnFinish;
    private TextView txtEdit;
    private GridView myChannel;
    private GridView otherChannel;
    private MyChannelAdapter madapter;
    private List<String> recommond;
    private OtherAdapter otherAdapter;
    private ArrayList<String> array;
    private boolean isEdited = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_channel);
        //找控制元件
        btnFinish = findViewById(R.id.btn_finish);
        txtEdit = findViewById(R.id.txt_edit);
        myChannel = findViewById(R.id.mygvChannel);
        otherChannel = findViewById(R.id.othergvChannel);
        //接收值
        Intent intent = getIntent();
        Bundle bundle = intent.getExtras();
        array = bundle.getStringArrayList("array");
        //給頻道管理寫介面卡
        madapter = new MyChannelAdapter(this, array);
        myChannel.setAdapter(madapter);
        recommond = new ArrayList<>();
        //給推薦頻道寫資料
        recommond.add("特賣");
        recommond.add("直播");
        recommond.add("房產");
        recommond.add("歷史");
        recommond.add("旅遊");
        //給推薦頻道新增設定介面卡
        otherAdapter = new OtherAdapter(this,recommond);
        otherChannel.setAdapter(otherAdapter);

        MyChannelAdapter.OnDeleteItemClick listener = new MyChannelAdapter.OnDeleteItemClick() {
            @Override
            public void OnDeleteItemClick(int position) {
                recommond.add(array.get(position));

                array.remove(position);
                madapter.notifyDataSetChanged();
otherAdapter.notifyDataSetChanged();
            }
        };

        madapter.setOnDeleteItemClick(listener);
        // 推薦頻道里 新增到 我的頻道
        otherChannel.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                array.add(recommond.get(position));
                madapter.notifyDataSetChanged();

                recommond.remove(position);
                otherAdapter.notifyDataSetChanged();
            }
        });
        //點選事件
        txtEdit.setOnClickListener(this);
        btnFinish.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.txt_edit:
                isEdited = !isEdited;
                if (isEdited){
                    txtEdit.setText("完成");
                }else {
                    txtEdit.setText("編輯");
                }

                madapter.setEdited(isEdited);
                break;
            case R.id.btn_finish:
                finish();
                break;

        }

    }
}

//另一個介面卡

package com.example.lenovo.pingdao;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.List;

public class OthertAdapter extends BaseAdapter{

    private boolean isEdited = false;
    private Context context;
    private List<String> list;

    public OthertAdapter(Context context, List<String> list) {
        this.context = context;
        this.list = list;
    }

    public void setEdited(boolean edited){
        isEdited=edited;
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int i) {
        return list.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
   ViewHolder holder = null;
   if (view == null){

       holder = new ViewHolder();
       view = View.inflate(context,R.layout.item_other,null);
       holder.txtChannel = view.findViewById(R.id.txt_channel);

          view.setTag(holder);
   }else {
      holder = (ViewHolder) view.getTag();
   }
        holder.txtChannel.setText(list.get(i));

return view;
}

    class ViewHolder{
        private TextView txtChannel;
    }
}

//我的介面卡


import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;

/**
 * Created by asus on 2018/9/20.
 */

public class MyChannelAdapter extends BaseAdapter{
    //提供一個介面
    public interface OnDeleteItemClick{
     void  OnDeleteItemClick(int position);
    }
    //介面例項化
    private OnDeleteItemClick listener;
    //提供初始化介面
    public void  setOnDeleteItemClick(OnDeleteItemClick listener){
        this.listener=listener;
    }
    private Context context;
    private ArrayList<String> list;

    public MyChannelAdapter(Context context, ArrayList<String> list) {
        this.context = context;
        this.list = list;
    }
private boolean isEdited = false;

    public void setEdited(boolean edited) {
        isEdited = edited;
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView ==null){
            holder = new ViewHolder();
            convertView = View.inflate(context,R.layout.item_mychannel,null);
            holder.txtChannel = convertView.findViewById(R.id.txt_channel);
            holder.del = convertView.findViewById(R.id.del);
            convertView.setTag(holder);
        }else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.txtChannel.setText(list.get(position));
        //判斷是否  顯示和隱藏 刪除圖片
        if (isEdited){
            holder.del.setVisibility(View.VISIBLE);
        }else {
            holder.del.setVisibility(View.GONE);
        }
        holder.del.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                listener.OnDeleteItemClick(position);
            }
        });

        return convertView;
    }
    class ViewHolder{
        private TextView txtChannel;
        private ImageView del;

    }
}

//佈局

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

    <ImageView
        android:paddingTop="5dp"
        android:id="@+id/del"
        android:src="@drawable/btn_add"
        android:layout_width="25dp"
        android:layout_height="wrap_content" />
    <TextView
        android:id="@+id/channel"
        android:textColor="#000000"
        android:textSize="22sp"
        android:text="刪除"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>
<?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">

    <TextView
        android:id="@+id/txt_channel"
        android:text="刪除"
        android:textSize="22sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ImageView
        android:id="@+id/del"
        android:src="@drawable/img_delete"
        android:layout_width="18dp"
        android:layout_height="18dp" />
</LinearLayout>

//佈局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.bwei.www.channelonly.ChannelActivity">

    <Button
        android:text="完成"
        android:textSize="20sp"
        android:id="@+id/btn_finish"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:padding="20dp"
            android:textSize="20sp"
            android:text="我的頻道"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/txt_edit"
            android:textSize="20sp"
            android:gravity="center"

            android:layout_alignParentRight="true"
            android:textColor="#000000"
            android:layout_width="wrap_content"
            android:text="編輯"
            android:paddingRight="15sp"
            android:layout_height="wrap_content" />

    </RelativeLayout>

    <GridView
        android:padding="20dp"
        android:id="@+id/mygvChannel"
        android:horizontalSpacing="10dp"
        android:numColumns="4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

    </GridView>

    <TextView
        android:text="頻道推薦"
        android:textSize="20sp"
        android:padding="15dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <GridView
        android:padding="20dp"
        android:id="@+id/othergvChannel"
        android:numColumns="4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></GridView>
</LinearLayout>

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