利用Camera类3D效果处理，camera类3d效果,import andro

利用Camera类3D效果处理，camera类3d效果,import andro

import android.app.Activity;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.LinearGradient;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PorterDuff.Mode;import android.graphics.PorterDuffXfermode;import android.graphics.Shader.TileMode;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.BaseAdapter;import android.widget.ImageView;public class MainActivity extends Activity implements OnItemSelectedListener{    private CustomGallery gallery;    private ImageAdapter imageAdapter;    private int[] resIds = new int[] { R.drawable.item1, R.drawable.item2,            R.drawable.item3, R.drawable.item4, R.drawable.item5,            R.drawable.item6, R.drawable.item7, R.drawable.item8,            R.drawable.item9, R.drawable.item10, R.drawable.item11,            R.drawable.item12, R.drawable.item13, R.drawable.item14,            R.drawable.item15 };    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        gallery = (CustomGallery) findViewById(R.id.gallery);        gallery.setSelection(2, true);        gallery.setAnimationDuration(1000);        imageAdapter = new ImageAdapter(this);        gallery.setAdapter(imageAdapter);        gallery.setOnItemSelectedListener(this);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.main, menu);        return true;    }    @Override    public void onItemSelected(AdapterView<?> parent, View view, int position,            long id) {        // 选中Gallery中某个图像时，在ImageSwitcher组件中放大显示该图像    }    @Override    public void onNothingSelected(AdapterView<?> parent) {    }    public class ImageAdapter extends BaseAdapter {        int mGalleryItemBackground;        private Context mContext;        public ImageAdapter(Context context) {            mContext = context;            TypedArray typedArray = obtainStyledAttributes(R.styleable.Gallery);            mGalleryItemBackground = typedArray.getResourceId(                    R.styleable.Gallery_android_galleryItemBackground, 0);            typedArray.recycle();        }        // 第1点改进，返回一个很大的值，例如，Integer.MAX_VALUE        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) {            ImageView i = createReflectedImages(mContext, resIds[position%resIds.length]);            i.setLayoutParams(new CustomGallery.LayoutParams(120, 100));            i.setScaleType(ImageView.ScaleType.CENTER_INSIDE);            // 设置的抗锯齿,防止图像在旋转的时候出现锯齿            BitmapDrawable drawable = (BitmapDrawable) i.getDrawable();            drawable.setAntiAlias(true);            return i;        }    }    /**     * 为图片添加倒影     * @param mContext     * @param imageId     * @return     */    public ImageView createReflectedImages(Context mContext, int imageId) {        Bitmap originalImage = BitmapFactory.decodeResource(                mContext.getResources(), imageId);        final int reflectionGap = 4;        int width = originalImage.getWidth();        int height = originalImage.getHeight();        Matrix matrix = new Matrix();        matrix.preScale(1, -1);        Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0,                height / 2, width, height / 2, matrix, false);        Bitmap bitmapWithReflection = Bitmap.createBitmap(width,                (height + height / 2), Config.ARGB_8888);        Canvas canvas = new Canvas(bitmapWithReflection);        canvas.drawBitmap(originalImage, 0, 0, null);        Paint deafaultPaint = new Paint();        canvas.drawRect(0, height, width, height + reflectionGap, deafaultPaint);        canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null);        Paint paint = new Paint();        LinearGradient shader = new LinearGradient(0,                originalImage.getHeight(), 0, bitmapWithReflection.getHeight()                        + reflectionGap, 0x70ffffff, 0x00ffffff,                TileMode.MIRROR);        paint.setShader(shader);        paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));        canvas.drawRect(0, height, width, bitmapWithReflection.getHeight()                + reflectionGap, paint);        ImageView imageView = new ImageView(mContext);        imageView.setImageBitmap(bitmapWithReflection);        return imageView;    }}//该片段来自于http://byrx.net