[모바일프로그래밍] 12-1 어댑터뷰

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ListView
        android:id="@+id/listview1"
        android:layout_width="378dp"
        android:layout_height="429dp"
        android:layout_marginTop="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.424"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="ListView Example"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.045"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.027" />
</androidx.constraintlayout.widget.ConstraintLayout>

 

MainActivity.java

package com.example.myapplication;

import android.app.Dialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    final String[] book = {"Computer Architecture", "Algorithm", "Artificial Intelligence",
            "Computer Graphics", "Data Structure", "Database", "Network", "Operating System",
            "Mobile Programming"};

    final Integer[] item = {R.drawable.computer_architecture, R.drawable.algorithm,
            R.drawable.artificial_intelligence, R.drawable.computer_graphics, R.drawable.database,
            R.drawable.network, R.drawable.operating_system, R.drawable.mobile_programming};

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

        setTitle("List View Example");
        ListView myListView = (ListView) findViewById(R.id.listview1);
        ArrayAdapter<String> adapter
                = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, book);
        myListView.setAdapter(adapter);

        myListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
                final Dialog imgDialog = new Dialog(MainActivity.this);
                imgDialog.setContentView(R.layout.dialog_book);

                Button img_dlg_btn = (Button) imgDialog.findViewById(R.id.button);
                final ImageView imageView = (ImageView) imgDialog.findViewById(R.id.imageView);

                Bitmap b = BitmapFactory.decodeResource(getResources(), item[position]);
                imageView.setImageBitmap(b);

                img_dlg_btn.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        imgDialog.dismiss();
                    }
                });
                imgDialog.show();
            }
        });
    }
}

 

dialog_book.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="342dp"
        android:layout_height="186dp"
        android:layout_marginStart="34dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="35dp"
        android:scaleType="fitXY"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@android:drawable/screen_background_dark" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="39dp"
        android:text="OK"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView" />
</androidx.constraintlayout.widget.ConstraintLayout>