Android实现3D云标签效果

本文实例为大家分享了Android实现3D云标签效果的具体代码，供大家参考，具体内容如下

一、自定义View

public class TagCloudView extends RelativeLayout {
 RelativeLayout navigation_bar;
 TextView mTextView1;
 private final float TOUCH_SCALE_FACTOR = .8f;
 private float tspeed;
 private TagCloud mTagCloud;
 private float mAngleX =0;
 private float mAngleY =0;
 private float centerX, centerY;
 private float radius;
 private Context mContext;
 private List<TextView> mTextView;
 private List<RelativeLayout.LayoutParams> mParams;
 private int shiftLeft;
 float dowx = 0;
 float dowy = 0;
 float cutx=100;
 float cuty=100;
 public TagCloudView(Context mContext, int width, int height, List<Tag> tagList) {
  this(mContext, width, height, tagList, 6 , 34, 1);
 }
 public TagCloudView(Context mContext, int width, int height, List<Tag> tagList,
    int textSizeMin, int textSizeMax, int scrollSpeed) {
  super(mContext);
  this.mContext= mContext;
  tspeed = scrollSpeed;
  centerX = width / 2;
  centerY = height / 2;
  radius = Math.min(centerX * 0.95f , centerY * 0.95f );
  shiftLeft = (int)(Math.min(centerX * 0.15f , centerY * 0.15f ));
  mTagCloud = new TagCloud(tagList, (int) radius , textSizeMin, textSizeMax);
  float[] tempColor1 = {0.9412f,0.7686f,0.2f,1}; //rgb Alpha
          //{1f,0f,0f,1} red  {0.3882f,0.21568f,0.0f,1} orange
          //{0.9412f,0.7686f,0.2f,1} light orange
  float[] tempColor2 = {1f,0f,0f,1}; //rgb Alpha
          //{0f,0f,1f,1} blue  {0.1294f,0.1294f,0.1294f,1} grey
          //{0.9412f,0.7686f,0.2f,1} light orange
  mTagCloud.setTagColor1(tempColor1);//higher color
  mTagCloud.setTagColor2(tempColor2);//lower color
  mTagCloud.setRadius((int) radius);
  mTagCloud.create(true);
  mTagCloud.setAngleX(mAngleX);
  mTagCloud.setAngleY(mAngleY);
  mTagCloud.update();
  mTextView = new ArrayList<TextView>();
  mParams = new ArrayList<RelativeLayout.LayoutParams>();
  Iterator<?> it=mTagCloud.iterator();
  Tag tempTag;
  int i=0;
  //取出每个数据放到TexView里
  while (it.hasNext()){
   tempTag= (Tag) it.next();
   tempTag.setParamNo(i);
   mTextView.add(new TextView(this.mContext));
   mTextView.get(i).setText(tempTag.getText());
   mParams.add(new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
   mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_LEFT);
   mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_TOP);
   mParams.get(i).setMargins((int) (centerX -shiftLeft + tempTag.getLoc2DX()),(int) (centerY + tempTag.getLoc2DY()),0,0);
   mTextView.get(i).setLayoutParams(mParams.get(i));
   mTextView.get(i).setSingleLine(true);
   int mergedColor = Color.argb((int)(tempTag.getAlpha() * 255), (int) (tempTag.getColorR() * 255), (int) (tempTag.getColorG() * 255),(int) (tempTag.getColorB() * 255));
   mTextView.get(i).setTextColor(mergedColor);
   mTextView.get(i).setTextSize((int)(tempTag.getTextSize() * tempTag.getScale()));
   addView(mTextView.get(i));
   mTextView.get(i).setOnClickListener(OnTagClickListener(tempTag.getUrl()));
   //设置每个TexView有自己指定的标签为自己的位置，以便后期操作
   mTextView.get(i).setTag(i);
   i++;
  }
  /** 用来自动播放的*/
  new Timer().schedule(new TimerTask() { 

   @Override
   public void run() {
    handler.sendEmptyMessage(1);
   }
  }, 0,200);
 }
 @SuppressLint("HandlerLeak")
 Handler handler=new Handler(){
  @Override
  public void handleMessage(Message msg) {
   super.handleMessage(msg);
   mAngleX = (cuty/radius) *tspeed * TOUCH_SCALE_FACTOR;
   mAngleY = (-cutx/radius) *tspeed * TOUCH_SCALE_FACTOR;
   changPosition();
  }
 };
 @Override
 protected void onDraw(Canvas canvas){
  super.onDraw(canvas);
 } 

 /**
  * 触发事件
  */
 @Override
 public boolean onTouchEvent(MotionEvent e) {
  switch (e.getAction()) {
  case MotionEvent.ACTION_DOWN:
   dowx=e.getX();
   dowy=e.getY();
   break;
  case MotionEvent.ACTION_UP:
   float upx=e.getX();
   float upy=e.getY();
   cutx=upx-dowx;
   cuty=upy-dowy;
   break;
  case MotionEvent.ACTION_MOVE:
   mAngleX = (cuty/radius) *tspeed * TOUCH_SCALE_FACTOR;
   mAngleY = (-cutx/radius) *tspeed * TOUCH_SCALE_FACTOR;
   changPosition();
   break;
  } 

  return true;
 }
 /**
  * 改变位置
  */
 private void changPosition(){
  mTagCloud.setAngleX(mAngleX);
  mTagCloud.setAngleY(mAngleY);
  mTagCloud.update();
  Iterator<?> it=mTagCloud.iterator();
  Tag tempTag;
  while (it.hasNext()){
   tempTag= (Tag) it.next();
   mParams.get(tempTag.getParamNo()).setMargins(
     (int) (centerX -shiftLeft + tempTag.getLoc2DX()),
     (int) (centerY + tempTag.getLoc2DY()),
     0,
     0);
   mTextView.get(tempTag.getParamNo()).setTextSize((int)(tempTag.getTextSize() * tempTag.getScale()));
   int mergedColor = Color.argb( (int) (tempTag.getAlpha() * 255),
      (int) (tempTag.getColorR() * 255),
      (int) (tempTag.getColorG() * 255),
      (int) (tempTag.getColorB() * 255));
   mTextView.get(tempTag.getParamNo()).setTextColor(mergedColor);
   mTextView.get(tempTag.getParamNo()).bringToFront();
  } 

 }
 /**
  * 点击事件
  * @param url
  * @return
  */
 View.OnClickListener OnTagClickListener(final String url){
  return new View.OnClickListener(){
   @Override
   public void onClick(View v) { 

   }
  };
 }
} 

二、自定义迭代器

/**
 * 自定义的迭代器
 * @author Administrator
 *
 */
public class TagCloud implements Iterable<Object>{
 private List<Tag> tagCloud;
 private int radius;
 private static final int DEFAULT_RADIUS = 3;
 private static final int TEXT_SIZE_MAX = 30 , TEXT_SIZE_MIN= 4;
 private static final float[] DEFAULT_COLOR1= { 0.886f, 0.725f, 0.188f, 1f};
 private static final float[] DEFAULT_COLOR2= { 0.3f, 0.3f, 0.3f, 1f};
 private float[] tagColor1;
 private float[] tagColor2;
 private int textSizeMax, textSizeMin;
 private float sin_mAngleX,cos_mAngleX,sin_mAngleY,cos_mAngleY,sin_mAngleZ,cos_mAngleZ;
 private float mAngleZ=0;
 private float mAngleX =0;
 private float mAngleY =0;
 private int size=0;
 private int smallest,largest;
 private boolean distrEven = true; 

 public TagCloud(){
  this(new ArrayList<Tag>());
 }
 public TagCloud(List<Tag> tags){
  this(tags,DEFAULT_RADIUS);
 }
 public TagCloud(List<Tag> tags, int radius){
  this( tags, radius, DEFAULT_COLOR1, DEFAULT_COLOR2, TEXT_SIZE_MIN, TEXT_SIZE_MAX);
 }
 public TagCloud(List<Tag> tags, int radius,int textSizeMin, int textSizeMax){
  this( tags, radius, DEFAULT_COLOR1, DEFAULT_COLOR2, textSizeMin, textSizeMax);
 }
 public TagCloud(List<Tag> tags, int radius,float[] tagColor1, float[] tagColor2){
  this( tags, radius, tagColor1, tagColor2, TEXT_SIZE_MIN, TEXT_SIZE_MAX);
 }   

 public TagCloud(List<Tag> tags, int radius, float[] tagColor1, float[] tagColor2,
      int textSizeMin, int textSizeMax){
  this.tagCloud=tags;
  this.radius = radius;
  this.tagColor1 = tagColor1;
  this.tagColor2 = tagColor2;
  this.textSizeMax = textSizeMax;
  this.textSizeMin = textSizeMin;
 }
 /**
  * 重写的方法
  */
 @Override
 public Iterator iterator() {
  return tagCloud.iterator();
 }
 /**
  * 创建
  * @param distrEven
  */
 public void create(boolean distrEven){
  this.distrEven =distrEven;
  positionAll(distrEven);
  sineCosine( mAngleX, mAngleY, mAngleZ);
  updateAll();
  smallest = 9999;
  largest = 0;
  for (int i=0; i< tagCloud.size(); i++){
   int j = tagCloud.get(i).getPopularity();
   largest = Math.max(largest, j);
   smallest = Math.min(smallest, j);
  }
  Tag tempTag;
  for (int i=0; i< tagCloud.size(); i++){
   tempTag = tagCloud.get(i);
   int j = tempTag.getPopularity();
   float percentage = ( smallest == largest ) ? 1.0f : ((float)j-smallest) / ((float)largest-smallest);
   float[] tempColor = getColorFromGradient( percentage ); //(rgb Alpha)
   int tempTextSize = getTextSizeGradient( percentage );
   tempTag.setColorR(tempColor[0]);
   tempTag.setColorG(tempColor[1]);
   tempTag.setColorB(tempColor[2]);
   tempTag.setTextSize(tempTextSize);
  }   

  this.size= tagCloud.size();
 }
 /**
  * create创建完，就需要update
  */
 public void update(){
  if( Math.abs(mAngleX) > .1 || Math.abs(mAngleY) > .1 ){
   sineCosine( mAngleX, mAngleY, mAngleZ);
   updateAll();
  }
 }
 /**
  * 计算每个Tag的
  * @param distrEven 是否根据字计算位置 true为是，否则字有覆盖的
  */
 private void positionAll(boolean distrEven){
  double phi = 0;
  double theta = 0;
  int max = tagCloud.size();
  for (int i=1; i<max+1; i++){
   if (distrEven){
    phi = Math.acos(-1.0 + (2.0*i -1.0)/max);
    theta = Math.sqrt(max*Math.PI) * phi;
   } else{
    phi = Math.random()*(Math.PI);
    theta = Math.random()*(2 * Math.PI);
   } 

   tagCloud.get(i-1).setLocX((int)( (radius * Math.cos(theta) * Math.sin(phi))));
   tagCloud.get(i-1).setLocY((int)(radius * Math.sin(theta) * Math.sin(phi)));
   tagCloud.get(i-1).setLocZ((int)(radius * Math.cos(phi)));
  }
 }
 /**
  * 更新所有的Tag位置
  */
 private void updateAll(){
  int max = tagCloud.size();
  for (int j=0; j<max; j++){
   float rx1 = (tagCloud.get(j).getLocX());
   float ry1 = (tagCloud.get(j).getLocY()) * cos_mAngleX +
      tagCloud.get(j).getLocZ() * -sin_mAngleX;
   float rz1 = (tagCloud.get(j).getLocY()) * sin_mAngleX +
      tagCloud.get(j).getLocZ() * cos_mAngleX;
   float rx2 = rx1 * cos_mAngleY + rz1 * sin_mAngleY;
   float ry2 = ry1;
   float rz2 = rx1 * -sin_mAngleY + rz1 * cos_mAngleY;
   float rx3 = rx2 * cos_mAngleZ + ry2 * -sin_mAngleZ;
   float ry3 = rx2 * sin_mAngleZ + ry2 * cos_mAngleZ;
   float rz3 = rz2;
   tagCloud.get(j).setLocX(rx3);
   tagCloud.get(j).setLocY(ry3);
   tagCloud.get(j).setLocZ(rz3);
   int diameter = 2 * radius;
   float per = diameter / (diameter+rz3);
   tagCloud.get(j).setLoc2DX((int)(rx3 * per));
   tagCloud.get(j).setLoc2DY((int)(ry3 * per));
   tagCloud.get(j).setScale(per);
   tagCloud.get(j).setAlpha(per / 2);
  }
  //给Tag排序
  Collections.sort(tagCloud);
 }
 /**
  * 计算字体颜色
  * @param perc
  * @return
  */
 private float[] getColorFromGradient(float perc){
  float[] tempRGB = new float[4];
  tempRGB[0] = ( perc * ( tagColor1[0] ) ) + ( (1-perc) * ( tagColor2[0] ) );
  tempRGB[1] = ( perc * ( tagColor1[1] ) ) + ( (1-perc) * ( tagColor2[1] ) );
  tempRGB[2] = ( perc * ( tagColor1[2] ) ) + ( (1-perc) * ( tagColor2[2] ) );
  tempRGB[3] = 1;
  return tempRGB;
 }
 /**
  * 计算字体的大小
  * @param perc
  * @return
  */
 private int getTextSizeGradient(float perc){
  int size;
  size = (int)( perc*textSizeMax + (1-perc)*textSizeMin );
  return size;
 }
 /**
  * 计算圆形的x y z坐标
  * @param mAngleX
  * @param mAngleY
  * @param mAngleZ
  */
 private void sineCosine(float mAngleX,float mAngleY,float mAngleZ) {
  double degToRad = (Math.PI / 180);
  sin_mAngleX= (float) Math.sin( mAngleX * degToRad);
  cos_mAngleX= (float) Math.cos( mAngleX * degToRad);
  sin_mAngleY= (float) Math.sin( mAngleY * degToRad);
  cos_mAngleY= (float) Math.cos( mAngleY * degToRad);
  sin_mAngleZ= (float) Math.sin( mAngleZ * degToRad);
  cos_mAngleZ= (float) Math.cos( mAngleZ * degToRad);
 }
 /**
  * 以下是get set方法
  * @return
  */
 public int getRadius() {
  return radius;
 }
 public void setRadius(int radius) {
  this.radius = radius;
 }
 public float[] getTagColor1() {
  return tagColor1;
 }
 public void setTagColor1(float[] tagColor) {
  this.tagColor1 = tagColor;
 }
 public float[] getTagColor2() {
  return tagColor2;
 }
 public void setTagColor2(float[] tagColor2) {
  this.tagColor2 = tagColor2;
 } 

 public float getRvalue(float[] color) {
  if (color.length>0)
   return color[0];
  else
   return 0;
 }
 public float getGvalue(float[] color) {
  if (color.length>0)
   return color[1];
  else
   return 0; }
 public float getBvalue(float[] color) {
  if (color.length>0)
   return color[2];
  else
   return 0; }
 public float getAlphaValue(float[] color) {
  if (color.length >= 4)
   return color[3];
  else
   return 0;
 }
 public float getAngleX() {
  return mAngleX;
 }
 public void setAngleX(float mAngleX) {
  this.mAngleX = mAngleX;
 }
 public float getAngleY() {
  return mAngleY;
 }
 public void setAngleY(float mAngleY) {
  this.mAngleY = mAngleY;
 }
 public int getSize() {
  return size;
 }  

} 

三、自定义数据

/**
 * Comparable接口 可以自定义排序方式
 * @author Administrator
 *
 */
public class Tag implements Comparable<Tag>{ 

 private String text, url;
 private int popularity;
 private int textSize;
 private float locX, locY, locZ;
 private float loc2DX, loc2DY;
 private float scale;
 private float colorR, colorG, colorB, alpha;
 private static final int DEFAULT_POPULARITY = 1;
 private int paramNo; 

 public Tag(String text, int popularity) {
  this(text, 0f, 0f, 0f, 1.0f, popularity, "");
 }
 public Tag(String text, int popularity, String url) {
  this(text, 0f, 0f, 0f, 1.0f, popularity, url);
 }
 public Tag(String text,float locX, float locY, float locZ) {
  this(text, locX, locY, locZ, 1.0f, DEFAULT_POPULARITY, "");
 }
 public Tag(String text,float locX, float locY, float locZ, float scale) {
  this(text, locX, locY, locZ, scale, DEFAULT_POPULARITY, "");
 }
 public Tag(String text,float locX, float locY, float locZ, float scale, int popularity,
    String url) {
  this.text = text;
  this.locX = locX;
  this.locY = locY;
  this.locZ = locZ;
  this.loc2DX = 0;
  this.loc2DY=0;
  this.colorR= 0.5f;
  this.colorG= 0.5f;
  this.colorB= 0.5f;
  this.alpha = 1.0f;
  this.scale = scale;
  this.popularity= popularity;
  this.url = url;
 }  

 @Override
 public int compareTo(Tag another) {
  //排序方式
  return (int)(another.locZ - locZ);
 } 

 public float getLocX() {
  return locX;
 }
 public void setLocX(float locX) {
  this.locX = locX;
 }
 public float getLocY() {
  return locY;
 }
 public void setLocY(float locY) {
  this.locY = locY;
 }
 public float getLocZ() {
  return locZ;
 }
 public void setLocZ(float locZ) {
  this.locZ = locZ;
 }
 public float getScale() {
  return scale;
 }
 public void setScale(float scale) {
  this.scale = scale;
 }
 public String getText() {
  return text;
 }
 public void setText(String text) {
  this.text = text;
 }
 public float getColorR() {
  return colorR;
 }
 public void setColorR(float colorR) {
  this.colorR = colorR;
 }
 public float getColorG() {
  return colorG;
 }
 public void setColorG(float colorG) {
  this.colorG = colorG;
 }
 public float getColorB() {
  return colorB;
 }
 public void setColorB(float colorB) {
  this.colorB = colorB;
 }
 public float getAlpha() {
  return alpha;
 }
 public void setAlpha(float alpha) {
  this.alpha = alpha;
 }
 public int getPopularity() {
  return popularity;
 }
 public void setPopularity(int popularity) {
  this.popularity = popularity;
 } 

 public int getTextSize() {
  return textSize;
 }
 public void setTextSize(int textSize) {
  this.textSize = textSize;
 }
 public float getLoc2DX() {
  return loc2DX;
 }
 public void setLoc2DX(float loc2dx) {
  loc2DX = loc2dx;
 }
 public float getLoc2DY() {
  return loc2DY;
 }
 public void setLoc2DY(float loc2dy) {
  loc2DY = loc2dy;
 }
 public int getParamNo() {
  return paramNo;
 }
 public void setParamNo(int paramNo) {
  this.paramNo = paramNo;
 }
 public String getUrl() {
  return url;
 }
 public void setUrl(String url) {
  this.url = url;
 } 

} 

四、调用

private TagCloudView mTagCloudView;
public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState); 

 this.requestWindowFeature(Window.FEATURE_NO_TITLE);
 getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
   WindowManager.LayoutParams.FLAG_FULLSCREEN); 

 Display display = getWindowManager().getDefaultDisplay();
 @SuppressWarnings("deprecation")
 int width = display.getWidth();
 @SuppressWarnings("deprecation")
 int height = display.getHeight();
 List<Tag> myTagList= createTags();
 mTagCloudView = new TagCloudView(this, width, height, myTagList );
 setContentView(mTagCloudView);
 mTagCloudView.requestFocus();
 mTagCloudView.setFocusableInTouchMode(true); 

}
private List<Tag> createTags(){
 List<Tag> tempList = new ArrayList<Tag>();
 tempList.add(new Tag("Google", 7, "http://www.google.com"));
 tempList.add(new Tag("Yahoo", 3, "www.yahoo.com"));
 tempList.add(new Tag("CNN", 4, "www.cnn.com"));
 tempList.add(new Tag("MSNBC", 5, "www.msnbc.com"));
 tempList.add(new Tag("CNBC", 5, "www.CNBC.com"));
 tempList.add(new Tag("Facebook", 7, "www.facebook.com"));
 tempList.add(new Tag("Youtube", 3, "www.youtube.com"));
 tempList.add(new Tag("BlogSpot", 5, "www.blogspot.com"));
 tempList.add(new Tag("Bing", 3, "www.bing.com"));
 tempList.add(new Tag("Wikipedia", 8, "www.wikipedia.com"));
 tempList.add(new Tag("Twitter", 5, "www.twitter.com"));
 tempList.add(new Tag("Msn", 1, "www.msn.com"));
 tempList.add(new Tag("Amazon", 3, "www.amazon.com"));
 tempList.add(new Tag("Ebay", 7, "www.ebay.com"));
 tempList.add(new Tag("LinkedIn", 5, "www.linkedin.com"));
 tempList.add(new Tag("Live", 7, "www.live.com"));
 tempList.add(new Tag("Microsoft", 3, "www.microsoft.com"));
 tempList.add(new Tag("Flicker", 1, "www.flicker.com"));
 tempList.add(new Tag("Apple", 5, "www.apple.com"));
 tempList.add(new Tag("Paypal", 5, "www.paypal.com"));
 tempList.add(new Tag("Craigslist", 7, "www.craigslist.com"));
 tempList.add(new Tag("Imdb", 2, "www.imdb.com"));
 tempList.add(new Tag("Ask", 4, "www.ask.com"));
 tempList.add(new Tag("Weibo", 1, "www.weibo.com"));
 tempList.add(new Tag("Tagin!", 8, "http://scyp.idrc.ocad.ca/projects/tagin"));
 tempList.add(new Tag("Shiftehfar", 8, "www.shiftehfar.org"));
 tempList.add(new Tag("Soso", 5, "www.google.com"));
 tempList.add(new Tag("XVideos", 3, "www.xvideos.com"));
 tempList.add(new Tag("BBC", 5, "www.bbc.co.uk"));
 return tempList;
} 

源码下载地址点击打开链接

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。