20. 갤러리 (Gallery)

갤러리 (Gallery)

• 사진 또는 이미지를 배치하고 좌우로 스크롤 할 수 있다

• java 코드를 통해 클릭시 이벤트를 정할 수 있다

---

(xml)

 <Gallery
        android:id="@+id/gallery1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:spacing="5dp"/>

    <ImageView
        android:id="@+id/ivPoster"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="20dp"/>

(java)

package com.example.exam11_15;

import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;

import androidx.appcompat.app.AppCompatActivity;

@SuppressWarnings("deprecation")
public class MainActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Gallery gallery = (Gallery) findViewById(R.id.gallery1);

        MyGalleryAdapter galAdapter = new MyGalleryAdapter(this);
        gallery.setAdapter(galAdapter);
    }

    public class MyGalleryAdapter extends BaseAdapter {
        Context context;

        Integer[] posterID = { R.drawable.mov11, R.drawable.mov12, R.drawable.mov13,
                R.drawable.mov14, R.drawable.mov15, R.drawable.mov16, R.drawable.mov17,
                R.drawable.mov18, R.drawable.mov19, R.drawable.mov20 };

        public MyGalleryAdapter(Context c) { context = c; }

        public int getCount() { return posterID.length; }

        public Object getItem(int arg0) { return null; }

        public long getItemId(int position) { return 0; }

        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageview = new ImageView(context);
            imageview.setLayoutParams(new Gallery.LayoutParams(200, 300));
            imageview.setScaleType(ImageView.ScaleType.FIT_CENTER);
            imageview.setPadding(5, 5, 5, 5);
            imageview.setImageResource(posterID[position]);

            final int pos = position;
            imageview.setOnTouchListener(new View.OnTouchListener() {
                public boolean onTouch(View v, MotionEvent event) {
                    ImageView ivPoster = (ImageView) findViewById(R.id.ivPoster);
                    ivPoster.setScaleType(ImageView.ScaleType.FIT_CENTER);
                    ivPoster.setImageResource(posterID[pos]);
                    return false;
                }
            });

            return imageview;
        }
    }
}