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 mTextView; 
 private List 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 tagList) { 
  this(mContext, width, height, tagList, 6 , 34, 1); 
 } 
 public TagCloudView(Context mContext, int width, int height, List 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(); 
  mParams = new ArrayList(); 
  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++; 
  } 
   
  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); 
 } 
 
 
  
 @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; 
 } 
  
 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(); 
  } 
   
 } 
  
 View.onClickListener onTagClickListener(final String url){ 
  return new View.onClickListener(){ 
   @Override 
   public void onClick(View v) { 
     
   } 
  }; 
 } 
} 

二、自定义迭代器

 
public class TagCloud implements Iterable