作成
まずはじめにxmlで次のようにlayoutを作る
res/layout/gallery.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <com.test.test.ScrollControlGallery android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_gravity="center" android:id="@+id/gallery"/> </LinearLayout>
「com.test.test.ScrollControlGallery」は各々の環境に合わせてパスを変える。
次にActivityで使うカスタムしたGalleryクラスを作る。
このカスタムGalleryはこちらのサイトを参考
ScrollControlGallery
package com.test.test; import android.content.Context; import android.util.AttributeSet; import android.view.KeyEvent; import android.view.MotionEvent; import android.widget.Gallery; public class ScrollControlGallery extends Gallery { public ScrollControlGallery(Context context) { super(context); } public ScrollControlGallery(Context context, AttributeSet attrs) { super(context, attrs); } public ScrollControlGallery(Context context, AttributeSet attrs,int defStyle) { super(context, attrs, defStyle); } private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2){ return e2.getX() > e1.getX(); } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { setAnimationDuration(600); return super.onScroll(e1, e2, distanceX, distanceY); } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { float velMax = 2500f; float velMin = 1000f; float velX = Math.abs(velocityX); if (velX > velMax) velX = velMax; else if (velX < velMin) velX = velMin; velX -= 600; int k = 500000; int speed = (int) Math.floor(1f / velX * k); setAnimationDuration(speed); int kEvent; if (isScrollingLeft(e1, e2)) { // Check if scrolling left kEvent = KeyEvent.KEYCODE_DPAD_LEFT; } else { // Otherwise scrolling right kEvent = KeyEvent.KEYCODE_DPAD_RIGHT; } onKeyDown(kEvent, null); return true; } }
最後にActivityを作る。
GalleryActivity
package com.test.test; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Gallery; import android.widget.ImageView; import android.widget.LinearLayout; public class GalleryActivity extends Activity { public final int WC = LinearLayout.LayoutParams.WRAP_CONTENT; public final int FP = LinearLayout.LayoutParams.FILL_PARENT; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.gallery); ScrollControlGallery gallery = (ScrollControlGallery) findViewById(R.id.gallery); gallery.setSpacing(0);//スクリーンショットがくっついていたらこれで調整する gallery.setAdapter(new GalleryAdapter(this, addGalleryImage())); } private ArrayList<Integer> addGalleryImage(){ ArrayList<Integer> imageResource = new ArrayList<Integer>(); //今回はテストで適当にデフォルトで入っているicon画像を追加 imageResource.add(R.drawable.icon); imageResource.add(R.drawable.icon); imageResource.add(R.drawable.icon); return imageResource; } private class GalleryAdapter extends BaseAdapter{ private Context context; private ArrayList<Integer> _imageResource = null; public GalleryAdapter(Context c, ArrayList<Integer> imageResource) { context = c; _imageResource = imageResource; } @Override public int getCount() { return _imageResource.size(); } @Override public Object getItem(int position) { return _imageResource.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ImageView image = new ImageView(context); image.setImageResource(_imageResource.get(position)); //300,400にしたのはスクリーンショットっぽくするため image.setLayoutParams(new Gallery.LayoutParams(300, 400)); return image; } } }