【ActKeywordAnim.java】

 

package co.cm.cn;import java.util.Random;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.widget.Button;import android.widget.TextView;public class ActKeywordAnim extends Activity implements OnClickListener {	public static final String[] keywords = { "敬飞", "小薛子", "汉子", "小白", "飞爷",			"咸鱼干", "老于", "带鱼", "蕴子", "老板", "小淫贱", "建平", "小尹子", "老宋", "宋少",			"阿娇", "国星", "焦爷", "焦羊羊", "蕴逼", "大梅", "老妹", "琪琪", "琪爷", "炮爷", "小钢炮",			"晋琪", "崔健", "雪梅", "之君", "小贱", "死胖子", "菊花", "潇潇", "洋仔", "基友之家",			"花逼", "茂升", "贱人", "臭鱼", "开心", "快乐", "幸福", "友爱", "知足", "夜生活", "激情",			"基情", "小磊子", "小飞子", "小琪子", "小君子", "小洋子", "小宋子", "小梅子", "廷儿", "延廷" };	private KeywordsFlow keywordsFlow;	private Button btnIn, btnOut;	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		requestWindowFeature(Window.FEATURE_NO_TITLE);		setContentView(R.layout.main);		btnIn = (Button) findViewById(R.id.btnIn);		btnOut = (Button) findViewById(R.id.btnOut);		btnIn.setOnClickListener(this);		btnOut.setOnClickListener(this);		keywordsFlow = (KeywordsFlow) findViewById(R.id.keywordsFlow);		keywordsFlow.setDuration(800l);// 设置持续时间		keywordsFlow.setOnItemClickListener(this);		// 添加		feedKeywordsFlow(keywordsFlow, keywords);		keywordsFlow.go2Show(KeywordsFlow.ANIMATION_IN);	}	private static void feedKeywordsFlow(KeywordsFlow keywordsFlow, String[] arr) {		Random random = new Random();		for (int i = 0; i < KeywordsFlow.MAX; i++) {			int ran = random.nextInt(arr.length);			String tmp = arr[ran];			keywordsFlow.feedKeyword(tmp);		}	}	@Override	public void onClick(View v) {		if (v == btnIn) {			keywordsFlow.rubKeywords();			// keywordsFlow.rubAllViews();			feedKeywordsFlow(keywordsFlow, keywords);			keywordsFlow.go2Show(KeywordsFlow.ANIMATION_IN);		} else if (v == btnOut) {			keywordsFlow.rubKeywords();			// keywordsFlow.rubAllViews();			feedKeywordsFlow(keywordsFlow, keywords);			keywordsFlow.go2Show(KeywordsFlow.ANIMATION_OUT);		} else if (v instanceof TextView) {			String keyword = ((TextView) v).getText().toString();			Intent intent = new Intent();			intent.setAction(Intent.ACTION_VIEW);			intent.addCategory(Intent.CATEGORY_DEFAULT);			intent.setData(Uri.parse("http://www.google.com.hk/#q=" + keyword));			startActivity(intent);		}	}}

【KeywordsFlow.java】

 

 

package co.cm.cn;import java.util.LinkedList;import java.util.Random;import java.util.Vector;import android.content.Context;import android.graphics.Paint;import android.util.AttributeSet;import android.util.TypedValue;import android.view.Gravity;import android.view.View;import android.view.ViewTreeObserver.OnGlobalLayoutListener;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.view.animation.Animation.AnimationListener;import android.view.animation.AnimationSet;import android.view.animation.AnimationUtils;import android.view.animation.Interpolator;import android.view.animation.ScaleAnimation;import android.view.animation.TranslateAnimation;import android.widget.FrameLayout;import android.widget.TextView;/** * 注意，出包时出混淆包，应在proguard.cfg中加入：
 * -keep public class * extends android.widget.FrameLayout
 */public class KeywordsFlow extends FrameLayout implements OnGlobalLayoutListener {	public static final int IDX_X = 0;	public static final int IDX_Y = 1;	public static final int IDX_TXT_LENGTH = 2;	public static final int IDX_DIS_Y = 3;	/** 由外至内的动画。 */	public static final int ANIMATION_IN = 1;	/** 由内至外的动画。 */	public static final int ANIMATION_OUT = 2;	/** 位移动画类型：从外围移动到坐标点。 */	public static final int OUTSIDE_TO_LOCATION = 1;	/** 位移动画类型：从坐标点移动到外围。 */	public static final int LOCATION_TO_OUTSIDE = 2;	/** 位移动画类型：从中心点移动到坐标点。 */	public static final int CENTER_TO_LOCATION = 3;	/** 位移动画类型：从坐标点移动到中心点。 */	public static final int LOCATION_TO_CENTER = 4;	public static final long ANIM_DURATION = 800l;	public static final int MAX = 10;	public static final int TEXT_SIZE_MAX = 25;	public static final int TEXT_SIZE_MIN = 15;	private OnClickListener itemClickListener;	private static Interpolator interpolator;	private static AlphaAnimation animAlpha2Opaque;	private static AlphaAnimation animAlpha2Transparent;	private static ScaleAnimation animScaleLarge2Normal, animScaleNormal2Large,			animScaleZero2Normal, animScaleNormal2Zero;	/** 存储显示的关键字。 */	private Vector
    
      vecKeywords;	private int width, height;	/**	 * go2Show()中被赋值为true，标识开发人员触发其开始动画显示。
     
	 * 本标识的作用是防止在填充keywrods未完成的过程中获取到width和height后提前启动动画。
     
	 * 在show()方法中其被赋值为false。
     
	 * 真正能够动画显示的另一必要条件：width 和 height不为0。
     
	 */	private boolean enableShow;	private Random random;	/**	 * @see ANIMATION_IN	 * @see ANIMATION_OUT	 * @see OUTSIDE_TO_LOCATION	 * @see LOCATION_TO_OUTSIDE	 * @see LOCATION_TO_CENTER	 * @see CENTER_TO_LOCATION	 * */	private int txtAnimInType, txtAnimOutType;	/** 最近一次启动动画显示的时间。 */	private long lastStartAnimationTime;	/** 动画运行时间。 */	private long animDuration;	public KeywordsFlow(Context context, AttributeSet attrs, int defStyle) {		super(context, attrs, defStyle);		init();	}	public KeywordsFlow(Context context, AttributeSet attrs) {		super(context, attrs);		init();	}	public KeywordsFlow(Context context) {		super(context);		init();	}	private void init() {		lastStartAnimationTime = 0l;		animDuration = ANIM_DURATION;		random = new Random();		vecKeywords = new Vector
     
      (MAX);		getViewTreeObserver().addOnGlobalLayoutListener(this);		interpolator = AnimationUtils.loadInterpolator(getContext(),				android.R.anim.decelerate_interpolator);		animAlpha2Opaque = new AlphaAnimation(0.0f, 1.0f);		animAlpha2Transparent = new AlphaAnimation(1.0f, 0.0f);		animScaleLarge2Normal = new ScaleAnimation(2, 1, 2, 1);		animScaleNormal2Large = new ScaleAnimation(1, 2, 1, 2);		animScaleZero2Normal = new ScaleAnimation(0, 1, 0, 1);		animScaleNormal2Zero = new ScaleAnimation(1, 0, 1, 0);	}	public long getDuration() {		return animDuration;	}	public void setDuration(long duration) {		animDuration = duration;	}	public boolean feedKeyword(String keyword) {		boolean result = false;		if (vecKeywords.size() < MAX) {			result = vecKeywords.add(keyword);		}		return result;	}	/**	 * 开始动画显示。
      
	 * 之前已经存在的TextView将会显示退出动画。
      
	 * 	 * @return 正常显示动画返回true；反之为false。返回false原因如下：
      
	 *         1.时间上不允许，受lastStartAnimationTime的制约；
      
	 *         2.未获取到width和height的值。
      
	 */	public boolean go2Show(int animType) {		if (System.currentTimeMillis() - lastStartAnimationTime > animDuration) {			enableShow = true;			if (animType == ANIMATION_IN) {				txtAnimInType = OUTSIDE_TO_LOCATION;				txtAnimOutType = LOCATION_TO_CENTER;			} else if (animType == ANIMATION_OUT) {				txtAnimInType = CENTER_TO_LOCATION;				txtAnimOutType = LOCATION_TO_OUTSIDE;			}			disapper();			boolean result = show();			return result;		}		return false;	}	private void disapper() {		int size = getChildCount();		for (int i = size - 1; i >= 0; i--) {			final TextView txt = (TextView) getChildAt(i);			if (txt.getVisibility() == View.GONE) {				removeView(txt);				continue;			}			FrameLayout.LayoutParams layParams = (LayoutParams) txt					.getLayoutParams();			// Log.d("ANDROID_LAB", txt.getText() + " leftM=" +			// layParams.leftMargin + " topM=" + layParams.topMargin			// + " width=" + txt.getWidth());			int[] xy = new int[] { layParams.leftMargin, layParams.topMargin,					txt.getWidth() };			AnimationSet animSet = getAnimationSet(xy, (width >> 1),					(height >> 1), txtAnimOutType);			txt.startAnimation(animSet);			animSet.setAnimationListener(new AnimationListener() {				public void onAnimationStart(Animation animation) {				}				public void onAnimationRepeat(Animation animation) {				}				public void onAnimationEnd(Animation animation) {					txt.setOnClickListener(null);					txt.setClickable(false);					txt.setVisibility(View.GONE);				}			});		}	}	private boolean show() {		if (width > 0 && height > 0 && vecKeywords != null				&& vecKeywords.size() > 0 && enableShow) {			enableShow = false;			lastStartAnimationTime = System.currentTimeMillis();			int xCenter = width >> 1, yCenter = height >> 1;			int size = vecKeywords.size();			int xItem = width / size, yItem = height / size;			// Log.d("ANDROID_LAB", "--------------------------width=" + width +			// " height=" + height + "  xItem=" + xItem			// + " yItem=" + yItem + "---------------------------");			LinkedList
      
        listX = new LinkedList
       
        (), listY = new LinkedList
        
         ();			for (int i = 0; i < size; i++) {				// 准备随机候选数，分别对应x/y轴位置				listX.add(i * xItem);				listY.add(i * yItem + (yItem >> 2));			}			// TextView[] txtArr = new TextView[size];			LinkedList
         
           listTxtTop = new LinkedList
          
           (); LinkedList
           
             listTxtBottom = new LinkedList
            
             (); for (int i = 0; i < size; i++) { String keyword = vecKeywords.get(i); // 随机颜色 int ranColor = 0xff000000 | random.nextInt(0x0077ffff); // 随机位置，糙值 int xy[] = randomXY(random, listX, listY, xItem); // 随机字体大小 int txtSize = TEXT_SIZE_MIN + random.nextInt(TEXT_SIZE_MAX - TEXT_SIZE_MIN + 1); // 实例化TextView final TextView txt = new TextView(getContext()); txt.setOnClickListener(itemClickListener); txt.setText(keyword); txt.setTextColor(ranColor); txt.setTextSize(TypedValue.COMPLEX_UNIT_SP, txtSize); txt.setShadowLayer(2, 2, 2, 0xff696969); txt.setGravity(Gravity.CENTER); // 获取文本长度 Paint paint = txt.getPaint(); int strWidth = (int) Math.ceil(paint.measureText(keyword)); xy[IDX_TXT_LENGTH] = strWidth; // 第一次修正:修正x坐标 if (xy[IDX_X] + strWidth > width - (xItem >> 1)) { int baseX = width - strWidth; // 减少文本右边缘一样的概率 xy[IDX_X] = baseX - xItem + random.nextInt(xItem >> 1); } else if (xy[IDX_X] == 0) { // 减少文本左边缘一样的概率 xy[IDX_X] = Math.max(random.nextInt(xItem), xItem / 3); } xy[IDX_DIS_Y] = Math.abs(xy[IDX_Y] - yCenter); txt.setTag(xy); if (xy[IDX_Y] > yCenter) { listTxtBottom.add(txt); } else { listTxtTop.add(txt); } } attach2Screen(listTxtTop, xCenter, yCenter, yItem); attach2Screen(listTxtBottom, xCenter, yCenter, yItem); return true; } return false; } /** 修正TextView的Y坐标将将其添加到容器上。 */ private void attach2Screen(LinkedList
             
               listTxt, int xCenter, int yCenter, int yItem) { int size = listTxt.size(); sortXYList(listTxt, size); for (int i = 0; i < size; i++) { TextView txt = listTxt.get(i); int[] iXY = (int[]) txt.getTag(); // Log.d("ANDROID_LAB", "fix[ " + txt.getText() + " ] x:" + // iXY[IDX_X] + " y:" + iXY[IDX_Y] + " r2=" // + iXY[IDX_DIS_Y]); // 第二次修正:修正y坐标 int yDistance = iXY[IDX_Y] - yCenter; // 对于最靠近中心点的，其值不会大于yItem
              
 // 对于可以一路下降到中心点的，则该值也是其应调整的大小
              
 int yMove = Math.abs(yDistance); inner: for (int k = i - 1; k >= 0; k--) { int[] kXY = (int[]) listTxt.get(k).getTag(); int startX = kXY[IDX_X]; int endX = startX + kXY[IDX_TXT_LENGTH]; // y轴以中心点为分隔线，在同一侧 if (yDistance * (kXY[IDX_Y] - yCenter) > 0) { // Log.d("ANDROID_LAB", "compare:" + // listTxt.get(k).getText()); if (isXMixed(startX, endX, iXY[IDX_X], iXY[IDX_X] + iXY[IDX_TXT_LENGTH])) { int tmpMove = Math.abs(iXY[IDX_Y] - kXY[IDX_Y]); if (tmpMove > yItem) { yMove = tmpMove; } else if (yMove > 0) { // 取消默认值。 yMove = 0; } // Log.d("ANDROID_LAB", "break"); break inner; } } } // Log.d("ANDROID_LAB", txt.getText() + " yMove=" + yMove); if (yMove > yItem) { int maxMove = yMove - yItem; int randomMove = random.nextInt(maxMove); int realMove = Math.max(randomMove, maxMove >> 1) * yDistance / Math.abs(yDistance); iXY[IDX_Y] = iXY[IDX_Y] - realMove; iXY[IDX_DIS_Y] = Math.abs(iXY[IDX_Y] - yCenter); // 已经调整过前i个需要再次排序 sortXYList(listTxt, i + 1); } FrameLayout.LayoutParams layParams = new FrameLayout.LayoutParams( FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT); layParams.gravity = Gravity.LEFT | Gravity.TOP; layParams.leftMargin = iXY[IDX_X]; layParams.topMargin = iXY[IDX_Y]; addView(txt, layParams); // 动画 AnimationSet animSet = getAnimationSet(iXY, xCenter, yCenter, txtAnimInType); txt.startAnimation(animSet); } } public AnimationSet getAnimationSet(int[] xy, int xCenter, int yCenter, int type) { AnimationSet animSet = new AnimationSet(true); animSet.setInterpolator(interpolator); if (type == OUTSIDE_TO_LOCATION) { animSet.addAnimation(animAlpha2Opaque); animSet.addAnimation(animScaleLarge2Normal); TranslateAnimation translate = new TranslateAnimation((xy[IDX_X] + (xy[IDX_TXT_LENGTH] >> 1) - xCenter) << 1, 0, (xy[IDX_Y] - yCenter) << 1, 0); animSet.addAnimation(translate); } else if (type == LOCATION_TO_OUTSIDE) { animSet.addAnimation(animAlpha2Transparent); animSet.addAnimation(animScaleNormal2Large); TranslateAnimation translate = new TranslateAnimation(0, (xy[IDX_X] + (xy[IDX_TXT_LENGTH] >> 1) - xCenter) << 1, 0, (xy[IDX_Y] - yCenter) << 1); animSet.addAnimation(translate); } else if (type == LOCATION_TO_CENTER) { animSet.addAnimation(animAlpha2Transparent); animSet.addAnimation(animScaleNormal2Zero); TranslateAnimation translate = new TranslateAnimation(0, (-xy[IDX_X] + xCenter), 0, (-xy[IDX_Y] + yCenter)); animSet.addAnimation(translate); } else if (type == CENTER_TO_LOCATION) { animSet.addAnimation(animAlpha2Opaque); animSet.addAnimation(animScaleZero2Normal); TranslateAnimation translate = new TranslateAnimation( (-xy[IDX_X] + xCenter), 0, (-xy[IDX_Y] + yCenter), 0); animSet.addAnimation(translate); } animSet.setDuration(animDuration); return animSet; } /** * 根据与中心点的距离由近到远进行冒泡排序。 * * @param endIdx * 起始位置。 * @param txtArr * 待排序的数组。 * */ private void sortXYList(LinkedList
              
                listTxt, int endIdx) { for (int i = 0; i < endIdx; i++) { for (int k = i + 1; k < endIdx; k++) { if (((int[]) listTxt.get(k).getTag())[IDX_DIS_Y] < ((int[]) listTxt .get(i).getTag())[IDX_DIS_Y]) { TextView iTmp = listTxt.get(i); TextView kTmp = listTxt.get(k); listTxt.set(i, kTmp); listTxt.set(k, iTmp); } } } } /** A线段与B线段所代表的直线在X轴映射上是否有交集。 */ private boolean isXMixed(int startA, int endA, int startB, int endB) { boolean result = false; if (startB >= startA && startB <= endA) { result = true; } else if (endB >= startA && endB <= endA) { result = true; } else if (startA >= startB && startA <= endB) { result = true; } else if (endA >= startB && endA <= endB) { result = true; } return result; } private int[] randomXY(Random ran, LinkedList
               
                 listX, LinkedList
                
                  listY, int xItem) { int[] arr = new int[4]; arr[IDX_X] = listX.remove(ran.nextInt(listX.size())); arr[IDX_Y] = listY.remove(ran.nextInt(listY.size())); return arr; } public void onGlobalLayout() { int tmpW = getWidth(); int tmpH = getHeight(); if (width != tmpW || height != tmpH) { width = tmpW; height = tmpH; show(); } } public Vector
                 
                   getKeywords() { return vecKeywords; } public void rubKeywords() { vecKeywords.clear(); } /** 直接清除所有的TextView。在清除之前不会显示动画。 */ public void rubAllViews() { removeAllViews(); } public void setOnItemClickListener(OnClickListener listener) { itemClickListener = listener; } // public void onDraw(Canvas canvas) { // super.onDraw(canvas); // Paint p = new Paint(); // p.setColor(Color.BLACK); // canvas.drawCircle((width >> 1) - 2, (height >> 1) - 2, 4, p); // p.setColor(Color.RED); // }}
                 
                
               
              
             
            
           
          
         
        
       
      
     
    

 

完整代码