Gallery for manual touch and automatic Infinite Loop

The UI effect should be followed by code:

package xiaogang.zhao;import xiaogang.zhao.R;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageView;import android.widget.AdapterView.OnItemSelectedListener;import java.util.Timer;import java.util.TimerTask;public class GalleryTest extends Activity {    private SizingGallery mGalleryItem;    private final Handler mHandler = new Handler() {        public void handleMessage(Message message) {            super.handleMessage(message);            switch (message.what) {                case 1:                    mGalleryItem.setSelection(mGalleryItem.getSelectedItemPosition() + 1);                    break;            }        }    };    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        setupViews();        init();    }    private void setupViews() {        mGalleryItem = (SizingGallery) findViewById(R.id.gallery0);        final ImageAdapter adapter = new ImageAdapter(this);        mGalleryItem.setAdapter(adapter);        mGalleryItem.setSelection(Integer.MAX_VALUE / 2);        mGalleryItem.setOnItemSelectedListener(new OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {                android.util.Log.d("AAA", "position: " + position + "    id:" + id);            }            @Override            public void onNothingSelected(AdapterView<?> parent) {                // TODO Auto-generated method stub            }        });    }    private void init() {        final Timer timer = new Timer();        timer.schedule(new TimerTask() {            @Override            public void run() {                mHandler.sendEmptyMessage(1);            }        }, 5000, 5000);    }    private final static class ImageAdapter extends BaseAdapter {        public ImageAdapter(Context c) {            mContext = c;        }        public int getCount() {            return Integer.MAX_VALUE;        }        public Object getItem(int position) {            return position;        }        public long getItemId(int position) {            return position;        }        public View getView(int position, View convertView, ViewGroup parent) {            if (position < 0)                position = position + mThumbIds.length;            ImageView imageView;            if (convertView == null) {                imageView = new ImageView(mContext);                //imageView.setLayoutParams(new Gallery.LayoutParams(100, 100));                imageView.setAdjustViewBounds(false);                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);                imageView.setPadding(18, 18, 18, 18);            } else {                imageView = (ImageView) convertView;            }            imageView.setImageResource(mThumbIds[position % mThumbIds.length]);            return imageView;        }        private Context mContext;    }    private static Integer[] mThumbIds = {            R.drawable.gallery_photo_1, R.drawable.gallery_photo_2, R.drawable.gallery_photo_3,            R.drawable.gallery_photo_4, R.drawable.gallery_photo_5, R.drawable.gallery_photo_6,            R.drawable.gallery_photo_7, R.drawable.gallery_photo_8    };}

 

package xiaogang.zhao;import android.content.Context;import android.graphics.Matrix;import android.util.AttributeSet;import android.view.View;import android.view.animation.Transformation;import android.widget.Gallery;public class SizingGallery extends Gallery {public SizingGallery(Context context, AttributeSet attrs) {super(context, attrs);}@Overrideprotected boolean getChildStaticTransformation(View child, Transformation t) {        t.clear();        View selectedChild = getSelectedView();        if (child == selectedChild) {        Matrix matrix = t.getMatrix();        int w2 = child.getWidth() / 2;        int h2 = child.getHeight() / 2;        matrix.postScale(2f, 1.5f, w2, h2);        }        return true;}}

Note:

1. mgalleryitem is used to set the items of the selected Gallery. setselection (integer. max_value/2) to avoid manual sliding to the left to achieve the infinite loop effect, you can modify the value for some simple tests;

2. Set the value of getcount and imageresource to perform remainder processing;

3. you can use sizinggallery to modify the size of the selected image by default. You can also use the default Gallery, and then use the code commented out above to achieve the following: imageview. setlayoutparams (new gallery. layoutparams (100,100 ));

4. For the entire project code, see:

Http://download.csdn.net/detail/androidzhaoxiaogang/3755223

5 .: