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; 
  //取出每個(gè)數(shù)據(jù)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())); 
   //設(shè)置每個(gè)TexView有自己指定的標(biāo)簽為自己的位置，以便后期操作 
   mTextView.get(i).setTag(i); 
   i++; 
  } 
  /** 用來自動(dòng)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); 
 } 
 
 
 /** 
  * 觸發(fā)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; 
 } 
 /** 
  * 改變位置 
  */ 
 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(); 
  } 
   
 } 
 /** 
  * 點(diǎn)擊事件 
  * @param url 
  * @return 
  */ 
 View.OnClickListener OnTagClickListener(final String url){ 
  return new View.OnClickListener(){ 
   @Override 
   public void onClick(View v) { 
     
   } 
  }; 
 } 
} 

/** 
 * 自定義的迭代器 
 * @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; 
 } 
 /** 
  * 重寫的方法 
  */ 
 @Override 
 public Iterator iterator() { 
  return tagCloud.iterator(); 
 } 
 /** 
  * 創(chuàng)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創(chuàng)建完，就需要update 
  */ 
 public void update(){ 
  if( Math.abs(mAngleX) > .1 || Math.abs(mAngleY) > .1 ){ 
   sineCosine( mAngleX, mAngleY, mAngleZ); 
   updateAll(); 
  } 
 } 
 /** 
  * 計(jì)算每個(gè)Tag的 
  * @param distrEven 是否根據(jù)字計(jì)算位置 true為是，否則字有覆蓋的 
  */ 
 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); 
  }  
  //給Tag排序 
  Collections.sort(tagCloud);  
 }  
 /** 
  * 計(jì)算字體顏色 
  * @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; 
 } 
 /** 
  * 計(jì)算字體的大小 
  * @param perc 
  * @return 
  */ 
 private int getTextSizeGradient(float perc){ 
  int size; 
  size = (int)( perc*textSizeMax + (1-perc)*textSizeMin ); 
  return size; 
 } 
 /** 
  * 計(jì)算圓形的x y z坐標(biāo) 
  * @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; 
 }  
 
} 

/** 
 * Comparable接口 可以自定義排序方式 
 * @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; 
 } 
 
} 

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; 
}