การทำ Custom ListView เบื้องต้น

layout/custom_layout.xml

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

    <ImageView
        android:id="@+id/imageView"
        android:layout_margin="5dp"
        android:src="@mipmap/ic_launcher" />

    <TextView
        android:id="@+id/textView"
        android:layout_gravity="center_vertical"
        android:padding="5dp"
        android:text="Item"
        android:textSize="18sp" />

</GridLayout>

<?xml version="1.0" encoding="utf-8"?>

<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="wrap_content">

<ImageView

android:id="@+id/imageView"

android:layout_margin="5dp"

android:src="@mipmap/ic_launcher" />

<TextView

android:id="@+id/textView"

android:layout_gravity="center_vertical"

android:padding="5dp"

android:text="Item"

android:textSize="18sp" />

</GridLayout>

CustomAdapter.java

package com.phaisarn.myapplication;

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

import java.util.ArrayList;

public class CustomAdapter extends ArrayAdapter {

    private Context mContext;
    private ArrayList<CustomItem> mItems;

    public CustomAdapter(Context c, ArrayList<CustomItem> items) {
        super(c, 0, items);
        mContext = c;
        mItems = items;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            LayoutInflater inflater = LayoutInflater.from(mContext);
            convertView = inflater.inflate(R.layout.custom_layout, parent, false);
        }
        ImageView img = (ImageView) convertView.findViewById(R.id.imageView);
        TextView text = (TextView) convertView.findViewById(R.id.textView);
        CustomItem item = mItems.get(position);

        img.setImageResource(item.imgId);
        text.setText(item.text);

            /*
            img.setImageResource(item.getImageId());
            text.setText(item.getText());
            */

        return convertView;
    }
}

package com.phaisarn.myapplication;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.TextView;

import java.util.ArrayList;

public class CustomAdapter extends ArrayAdapter {

private Context mContext;

private ArrayList<CustomItem> mItems;

public CustomAdapter(Context c, ArrayList<CustomItem> items) {

super(c, 0, items);

mContext = c;

mItems = items;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

if (convertView == null) {

LayoutInflater inflater = LayoutInflater.from(mContext);

convertView = inflater.inflate(R.layout.custom_layout, parent, false);

}

ImageView img = (ImageView) convertView.findViewById(R.id.imageView);

TextView text = (TextView) convertView.findViewById(R.id.textView);

CustomItem item = mItems.get(position);

img.setImageResource(item.imgId);

text.setText(item.text);

img.setImageResource(item.getImageId());

text.setText(item.getText());

return convertView;

}

CustomItem.java

package com.phaisarn.myapplication;

public class CustomItem {
    public int imgId;
    public String text;

    public CustomItem(int imgId, String text) {
        this.imgId = imgId;
        this.text = text;
    }

      /*
      public int getImageId() {
            return mImgId;
      }

      public String getText() {
            return mText;
      }
      */
}

package com.phaisarn.myapplication;

public class CustomItem {

public int imgId;

public String text;

public CustomItem(int imgId, String text) {

this.imgId = imgId;

this.text = text;

}

public int getImageId() {

return mImgId;

}

public String getText() {

return mText;

}

content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/content_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".MainActivity"
    tools:showIn="@layout/activity_main">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/content_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

app:layout_behavior="@string/appbar_scrolling_view_behavior"

tools:context=".MainActivity"

tools:showIn="@layout/activity_main">

<ListView

android:id="@+id/listView"

android:layout_width="match_parent"

android:layout_height="match_parent" />

</LinearLayout>

MainActivity.java

package com.phaisarn.myapplication;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

        ArrayList<CustomItem> itemArray = new ArrayList<>();

        CustomItem item = new CustomItem(R.drawable.ic_1, "One");
        itemArray.add(item);

        item = new CustomItem(R.drawable.ic_2, "Two");
        itemArray.add(item);

        itemArray.add(new CustomItem(R.drawable.ic_3, "Three"));
        itemArray.add(new CustomItem(R.drawable.ic_4, "สี่"));
        itemArray.add(new CustomItem(R.drawable.ic_5, "ห้า"));
        itemArray.add(new CustomItem(R.drawable.ic_6, "หก"));

        CustomAdapter adapter =
                new CustomAdapter(getBaseContext(), itemArray);

        ListView listView = (ListView)findViewById(R.id.listView);
        listView.setAdapter(adapter);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if(id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

package com.phaisarn.myapplication;

import android.os.Bundle;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.view.View;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.ListView;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

setSupportActionBar(toolbar);

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

fab.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)

.setAction("Action", null).show();

}

});

ArrayList<CustomItem> itemArray = new ArrayList<>();

CustomItem item = new CustomItem(R.drawable.ic_1, "One");

itemArray.add(item);

item = new CustomItem(R.drawable.ic_2, "Two");

itemArray.add(item);

itemArray.add(new CustomItem(R.drawable.ic_3, "Three"));

itemArray.add(new CustomItem(R.drawable.ic_4, "สี่"));

itemArray.add(new CustomItem(R.drawable.ic_5, "ห้า"));

itemArray.add(new CustomItem(R.drawable.ic_6, "หก"));

CustomAdapter adapter =

new CustomAdapter(getBaseContext(), itemArray);

ListView listView = (ListView)findViewById(R.id.listView);

listView.setAdapter(adapter);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.menu_main, menu);

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

//noinspection SimplifiableIfStatement

if(id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

รูปที่ใช้

Phaisarn Sutheebanjard

blog.phaisarn.com

การทำ Custom ListView เบื้องต้น