Android开发3D界面

 trge

package com.test.util;

import com.dooya.activity.R;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuffXfermode;
import android.graphics.Bitmap.Config;
import android.graphics.PorterDuff.Mode;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.BitmapDrawable;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
//加载资源图片
private Integer[] mImageIds = {
R.drawable.favorite,
R.drawable.room,
R.drawable.scene,
R.drawable.security,
R.drawable.time,
R.drawable.set};

public ImageAdapter(Context c) {
mContext = c;
}

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

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,mImageIds[position]);

i.setLayoutParams(new CoverFlow.LayoutParams(120, 100));
i.setScaleType(ImageView.ScaleType.CENTER_INSIDE);

// 设置的抗锯齿
BitmapDrawable drawable = (BitmapDrawable) i.getDrawable();
drawable.setAntiAlias(true);
return i;
}

public float getScale(boolean focused, int offset) {
return Math.max(0, 1.0f / (float) Math.pow(2, Math.abs(offset)));
}

/**
* 设置镜像图像
* @param mContext
* @param imageId
* <a href="http://my.oschina.net/u/556800" target="_blank" rel="nofollow">@return</a> */
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;
}

}

package com.test.util;

import android.content.Context;
import android.graphics.Camera;
import android.graphics.Matrix;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Transformation;
import android.widget.Gallery;
import android.widget.ImageView;

public class CoverFlow extends Gallery {

private Camera mCamera = new Camera();
private int mMaxRotationAngle = 50;//60;
private int mMaxZoom = -380;//-120;
private int mCoveflowCenter;
private boolean mAlphaMode = true;
private boolean mCircleMode = false;

public CoverFlow(Context context) {
super(context);
this.setStaticTransformationsEnabled(true);
}

public CoverFlow(Context context, AttributeSet attrs) {
super(context, attrs);
this.setStaticTransformationsEnabled(true);
}

public CoverFlow(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.setStaticTransformationsEnabled(true);
}

public int getMaxRotationAngle() {
return mMaxRotationAngle;
}

public void setMaxRotationAngle(int maxRotationAngle) {
mMaxRotationAngle = maxRotationAngle;
}

public boolean getCircleMode() {
return mCircleMode;
}

public void setCircleMode(boolean isCircle) {
mCircleMode = isCircle;
}

public boolean getAlphaMode() {
return mAlphaMode;
}

public void setAlphaMode(boolean isAlpha) {
mAlphaMode = isAlpha;
}

public int getMaxZoom() {
return mMaxZoom;
}

public void setMaxZoom(int maxZoom) {
mMaxZoom = maxZoom;
}

private int getCenterOfCoverflow() {
return (getWidth() - getPaddingLeft() - getPaddingRight()) / 2
+ getPaddingLeft();
}

private static int getCenterOfView(View view) {
return view.getLeft() + view.getWidth() / 2;
}

protected boolean getChildStaticTransformation(View child, Transformation t) {
final int childCenter = getCenterOfView(child);
final int childWidth = child.getWidth();
int rotationAngle = 0;
t.clear();
t.setTransformationType(Transformation.TYPE_MATRIX);
if (childCenter == mCoveflowCenter) {
transformImageBitmap((ImageView) child, t, 0);
} else {
rotationAngle = (int) (((float) (mCoveflowCenter - childCenter) / childWidth) * mMaxRotationAngle);
if (Math.abs(rotationAngle) > mMaxRotationAngle) {
rotationAngle = (rotationAngle < 0) ? -mMaxRotationAngle
: mMaxRotationAngle;
}
transformImageBitmap((ImageView) child, t, rotationAngle);
}
return true;
}

/**
*
*/
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
mCoveflowCenter = getCenterOfCoverflow();
super.onSizeChanged(w, h, oldw, oldh);
}

/**
* 把图像位图的角度通过
*/
private void transformImageBitmap(ImageView child, Transformation t,
int rotationAngle) {
mCamera.save();
final Matrix imageMatrix = t.getMatrix();
final int imageHeight = child.getLayoutParams().height;
final int imageWidth = child.getLayoutParams().width;
final int rotation = Math.abs(rotationAngle);
mCamera.translate(0.0f, 0.0f, 100.0f);

// 如视图的角度更少,放大
if (rotation <= mMaxRotationAngle) {
float zoomAmount = (float) (mMaxZoom + (rotation * 1.5));
mCamera.translate(0.0f, 0.0f, zoomAmount);
if (mCircleMode) {
if (rotation < 40)
mCamera.translate(0.0f, 155, 0.0f);
else
mCamera.translate(0.0f, (255 - rotation * 2.5f), 0.0f);
}
if (mAlphaMode) {
((ImageView) (child)).setAlpha((int) (255 - rotation * 2.5));
}
}
mCamera.rotateY(rotationAngle);
mCamera.getMatrix(imageMatrix);
imageMatrix.preTranslate(-(imageWidth / 2), -(imageHeight / 2));
imageMatrix.postTranslate((imageWidth / 2), (imageHeight / 2));
mCamera.restore();
}
}

package com.test.activity;

import android.app.Activity;

import android.os.Bundle;

import android.view.WindowManager;

import com.dooya.util.CoverFlow;

import com.dooya.util.ImageAdapter;

public class HomeActivity extends Activity {

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

CoverFlow cf = new CoverFlow(this);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏

cf.setBackgroundDrawable(this.getResources().getDrawable(R.drawable.bg));//背景

cf.setAdapter(new ImageAdapter(this));

ImageAdapter imageAdapter = new ImageAdapter(this);

cf.setAdapter(imageAdapter);

cf.setSelection(2, true);

cf.setAnimationDuration(1000);

setContentView(cf);

}

}