Android控件开发之Gallery3D酷炫效果（带源码），价值2000元的学习资源泄露

本文主要是介绍Android控件开发之Gallery3D酷炫效果（带源码），价值2000元的学习资源泄露，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

---

效果网上已经很多人做出来了，只是这次需要用到，所以自己也实践了一下（这里例子我也是根据网上一些资料编写）。特下面针对一些关键代码进行简要说明，需要做这方面东西的朋友可以看看。这篇文章是实用性文章，理论分析不多。

下面说下具体的类作用：

一：这个是主页：操作的内容不多，可以具体看一下

public class MainActivity extends Activity {

DisplayImageOptions options;

private ImageLoader imageLoader;

private FancyCoverFlow fancyCoverFlow;

private List filmList;

private ImageAdapter adapter;

private int cur_index = 0;

private int count_drawble;

private static int MSG_UPDATE = 1;

// 定时任务

private ScheduledExecutorService scheduledExecutorService;

// 通过handler来更新主界面

private Handler handler = new Handler() {

public void handleMessage(Message msg) {

if (msg.what == MSG_UPDATE) {

fancyCoverFlow.setSelection(cur_index);

}

}

};

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

filmList = FilmInfoTest.getfilmInfo();

Log.i(“INFO”, filmList.size()+“条目数”);

// 配置option

options = new DisplayImageOptions.Builder()

.showStubImage(R.drawable.logo)

.showImageForEmptyUri(R.drawable.logo)

.showImageOnFail(R.drawable.ic_error).cacheInMemory(true)

.cacheOnDisc(true).bitmapConfig(Bitmap.Config.RGB_565).build();

imageLoader = ImageLoader.getInstance();

adapter = new ImageAdapter(this, filmList, options, imageLoader);

fancyCoverFlow = (FancyCoverFlow) findViewById(R.id.fancyCoverFlow);

// item之间的间隙可以近似认为是imageview的宽度与缩放比例的乘积的一半

fancyCoverFlow.setSpacing(-180);

fancyCoverFlow.setAdapter(adapter);

fancyCoverFlow.setSelection(1002);

// fancyCoverFlow.setActionDistance(10);

fancyCoverFlow.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override

public void onItemSelected(AdapterView<?> parent, View view,

int position, long id) {

cur_index = position;

}

@Override

public void onNothingSelected(AdapterView<?> parent) {

}

});

// 点击事件

fancyCoverFlow.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

// TODO Auto-generated method stub

Toast.makeText(MainActivity.this,

filmList.get(position % filmList.size()).getFilmName(),

0).show();

}

});

// // 开启自动轮播

// count_drawble = adapter.getCount();

// startPlay();

}

/**

• 开始轮播图切换

*/

private void startPlay() {

scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();

scheduledExecutorService.scheduleAtFixedRate(new AutoPlayTask(), 1, 4,

TimeUnit.SECONDS);

}

/**

• 停止轮播图切换

*/

private void stopPlay() {

scheduledExecutorService.shutdown();

}

/**

• 执行轮播图切换任务

*/

private class AutoPlayTask implements Runnable {

@Override

public void run() {

// cur_index = cur_index % count_drawble; // 图片区间[0,count_drawable)

// Message msg = handler.obtainMessage(MSG_UPDATE);

// handler.sendMessage(msg);

// cur_index++;

}

}

@Override

protected void onStop() {

imageLoader.stop();

super.onStop();

}

二：适配器

这里我主要是用本地资源进行测试了一下，设置了倒影等等，当然，你也可以改为xml布局设置图片的

public class ImageAdapter extends FancyCoverFlowAdapter {

private Context context;

private List filmList;

// private ImageLoader imageLoader;

// private DisplayImageOptions options;

public ImageAdapter(Context context, List filmList,

DisplayImageOptions options, ImageLoader imageLoader) {

this.context = context;

this.filmList = filmList;

// this.options = options;

// this.imageLoader = imageLoader;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return Integer.MAX_VALUE;

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return filmList.get(position);

// return position;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return position % filmList.size();

// return position;

}

@Override

public View getCoverFlowItem(int position, View reusableView,

ViewGroup parent) {

ImageView imageView = (ImageView) reusableView;

if (imageView == null) {

imageView = new ImageView(context);

}

Resources re = context.getResources();

InputStream is = re.openRawResource(filmList.get(position%filmList.size()).getRs());

// InputStream is = re.openRawResource(mImagesId[position%mImagesId.length]);

BitmapDrawable mapdraw = new BitmapDrawable(is);

Bitmap bitmap = mapdraw.getBitmap();

imageView.setImageBitmap(BitmapUtil.createReflectedBitmap(bitmap));

// imageView.setImageBitmap(bitmap);

// ps.电影海报宽高比例一般为3：4

imageView.setLayoutParams(new Gallery.LayoutParams(410, 713));

// // 异步加载图片

// imageLoader.displayImage(filmList.get(position % filmList.size())

// .getFilmImageLink(), imageView, options);

imageView.setScaleType(ScaleType.CENTER_CROP);

return imageView;

}

public Integer[] getImagesId(){

return mImagesId;

}

public void setImagesId(Integer[] mImagesId){

this.mImagesId = mImagesId;

}

private Integer mImagesId[] = {

R.drawable.ic_1,

R.drawable.ic_3,

R.drawable.ic_2,

R.drawable.ic_4,

R.drawable.ic_5

};

三：gallery 控件类

缩放，还有透明，等等都在这里设置

public class FancyCoverFlow extends Gallery {

public static final int ACTION_DISTANCE_AUTO = Integer.MAX_VALUE;

/**

• 图片向上突出，可以通过代码控制，也可以在xml上控制

*/

public static final float SCALEDOWN_GRAVITY_TOP = 0.0f;

/**

• 图片中间突出

*/

public static final float SCALEDOWN_GRAVITY_CENTER = 0.5f;

/**

• 图片向下突出

*/

public static final float SCALEDOWN_GRAVITY_BOTTOM = 1.0f;

private float reflectionRatio = 0.3f;

private int reflectionGap = 4;

private boolean reflectionEnabled = false;

private float unselectedAlpha;

private Camera transformationCamera;

private int maxRotation = 0;

private float unselectedScale;

private float scaleDownGravity = SCALEDOWN_GRAVITY_CENTER;

private int actionDistance;

private float unselectedSaturation;

public FancyCoverFlow(Context context) {

super(context);

this.initialize();

}

public FancyCoverFlow(Context context, AttributeSet attrs) {

super(context, attrs);

this.initialize();

this.applyXmlAttributes(attrs);

}

@SuppressLint(“NewApi”)

public FancyCoverFlow(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

if (Build.VERSION.SDK_INT >= 11) {

this.setLayerType(LAYER_TYPE_SOFTWARE, null);

}

this.initialize();

this.applyXmlAttributes(attrs);

}

private void initialize() {

this.transformationCamera = new Camera();

this.setSpacing(0);

}

private void applyXmlAttributes(AttributeSet attrs) {

TypedArray a = getContext().obtainStyledAttributes(attrs,

R.styleable.FancyCoverFlow);

this.actionDistance = a

.getInteger(R.styleable.FancyCoverFlow_actionDistance,

ACTION_DISTANCE_AUTO);

this.scaleDownGravity = a.getFloat(

R.styleable.FancyCoverFlow_scaleDownGravity, 0.5f);

this.maxRotation = a.getInteger(R.styleable.FancyCoverFlow_maxRotation,

0);

this.unselectedAlpha = a.getFloat(

R.styleable.FancyCoverFlow_unselectedAlpha, 0.5f);

this.unselectedSaturation = a.getFloat(

R.styleable.FancyCoverFlow_unselectedSaturation, 0.0f);

this.unselectedScale = a.getFloat(

R.styleable.FancyCoverFlow_unselectedScale, 0.75f);

}

public float getReflectionRatio() {

return reflectionRatio;

}

public void setReflectionRatio(float reflectionRatio) {

if (reflectionRatio <= 0 || reflectionRatio > 0.5f) {

throw new IllegalArgumentException(

“reflectionRatio may only be in the interval (0, 0.5]”);

}

this.reflectionRatio = reflectionRatio;

if (this.getAdapter() != null) {

((FancyCoverFlowAdapter) this.getAdapter()).notifyDataSetChanged();

}

}

public int getReflectionGap() {

return reflectionGap;

}

public void setReflectionGap(int reflectionGap) {

this.reflectionGap = reflectionGap;

if (this.getAdapter() != null) {

((FancyCoverFlowAdapter) this.getAdapter()).notifyDataSetChanged();

}

}

public boolean isReflectionEnabled() {

return reflectionEnabled;

}

public void setReflectionEnabled(boolean reflectionEnabled) {

this.reflectionEnabled = reflectionEnabled;

if (this.getAdapter() != null) {

((FancyCoverFlowAdapter) this.getAdapter()).notifyDataSetChanged();

}

}

@Override

public void setAdapter(SpinnerAdapter adapter) {

if (!(adapter instanceof FancyCoverFlowAdapter)) {

throw new ClassCastException(FancyCoverFlow.class.getSimpleName()

• " only works i
  n conjunction with a "

• FancyCoverFlowAdapter.class.getSimpleName());

}

super.setAdapter(adapter);

}

public int getMaxRotation() {

return maxRotation;

}

public void setMaxRotation(int maxRotation) {

this.maxRotation = maxRotation;

}

public float getUnselectedAlpha() {

return this.unselectedAlpha;

}

public float getUnselectedScale() {

return unselectedScale;

}

public void setUnselectedScale(float unselectedScale) {

this.unselectedScale = unselectedScale;

}

public float getScaleDownGravity() {

return scaleDownGravity;

}

public void setScaleDownGravity(float scaleDownGravity) {

this.scaleDownGravity = scaleDownGravity;

}

public int getActionDistance() {

return actionDistance;
tion with a "

• FancyCoverFlowAdapter.class.getSimpleName());

}

super.setAdapter(adapter);

}

public int getMaxRotation() {

return maxRotation;

}

public void setMaxRotation(int maxRotation) {

this.maxRotation = maxRotation;

}

public float getUnselectedAlpha() {

return this.unselectedAlpha;

}

public float getUnselectedScale() {

return unselectedScale;

}

public void setUnselectedScale(float unselectedScale) {

this.unselectedScale = unselectedScale;

}

public float getScaleDownGravity() {

return scaleDownGravity;

}

public void setScaleDownGravity(float scaleDownGravity) {

this.scaleDownGravity = scaleDownGravity;

}

public int getActionDistance() {

return actionDistance;

这篇关于Android控件开发之Gallery3D酷炫效果（带源码），价值2000元的学习资源泄露的文章就介绍到这儿，希望我们推荐的文章对大家有所帮助，也希望大家多多支持为之网！