本文实例为大家分享了Android实现圆形云标签效果展示的具体代码，供大家参考，具体内容如下
下面是实现的效果图：
这个适合用于选择 用户的一些兴趣标签，个性名片等。
代码：
Activity
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package com.dyl.cloudtags; import java.util.ArrayList; import java.util.Arrays; import java.util.Random; import android.app.Activity; import android.content.SharedPreferences; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.EditText; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity { private KeywordsFlow keywordsFlow; private String[] keywords; public static final String SEARCH_HISTORY = "search_history"; private ArrayList<SearchDataPojo> searchItem; private String longhistory; private SharedPreferences sp; private ArrayList<String> history; private EditText world_shopping_search_input; private TextView world_city_refresh, clear_history; private ImageView toSearch; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); initSearchHistory(); refreshTags(); } private void initView() { world_shopping_search_input = (EditText) findViewById(R.id.world_shopping_search_input); keywordsFlow = (KeywordsFlow) findViewById(R.id.keywordsflow); world_city_refresh = (TextView) findViewById(R.id.world_city_refresh); world_city_refresh.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { refreshTags(); } }); clear_history = (TextView) findViewById(R.id.clear_history); clear_history.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { clearSearchHistory(); } }); toSearch = (ImageView) findViewById(R.id.toSearch); toSearch.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { saveSearchHistory(); refreshTags(); } }); } private void refreshTags() { initSearchHistory(); keywordsFlow.setDuration(800l); keywordsFlow.setOnItemClickListener(new OnClickListener() { @Override public void onClick(View v) { String keyword = ((TextView) v).getText().toString();// 获得点击的标签 world_shopping_search_input.setText(keyword); } }); // 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); } } /** * 读取历史搜索记录 */ private void initSearchHistory() { sp = getSharedPreferences(MainActivity.SEARCH_HISTORY, 0); longhistory = sp.getString(MainActivity.SEARCH_HISTORY, ""); if (!longhistory.equals("")) { keywords = longhistory.split(","); searchItem = new ArrayList<SearchDataPojo>(); for (int i = 0; i < keywords.length; i++) { searchItem.add(new SearchDataPojo().setContent(keywords[i])); } } else {// 如果SharedPreferences没有值得话，就显示默认的数据 keywords = new String[] { "口味虾", "牛蛙", "火锅", "真功夫", "料理", "密室逃", "天成房", "波比艾" }; } } /* * 保存搜索记录 */ private void saveSearchHistory() { String text = world_shopping_search_input.getText().toString().trim(); Toast.makeText(this, text, Toast.LENGTH_LONG).show(); if (!text.equals("") && text != null) { if (text.length() < 1) { return; } sp = getSharedPreferences(SEARCH_HISTORY, 0); String longhistory = sp.getString(SEARCH_HISTORY, ""); String[] tmpHistory = longhistory.split(","); history = new ArrayList<String>(Arrays.asList(tmpHistory)); if (history.size() > 0) { int i; for (i = 0; i < history.size(); i++) { if (text.equals(history.get(i))) { history.remove(i); break; } } history.add(0, text); } if (history.size() > 0) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < history.size(); i++) { sb.append(history.get(i) + ","); } sp.edit().putString(SEARCH_HISTORY, sb.toString()).commit(); } else { sp.edit().putString(SEARCH_HISTORY, text + ",").commit(); } clear_history.setVisibility(View.VISIBLE); } } // 清除历史数据 private void clearSearchHistory() { searchItem.removeAll(searchItem); sp.edit().clear().commit(); Toast.makeText(this, "清除历史记录", Toast.LENGTH_LONG).show(); } } |
用于将控件设置为圆形的自定义TextView
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package com.dyl.cloudtags; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PaintFlagsDrawFilter; import android.util.AttributeSet; import android.widget.TextView; public class CircleView extends TextView { private Paint mBgPaint = new Paint(); PaintFlagsDrawFilter pfd = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG); public CircleView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub } public CircleView(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub mBgPaint.setColor(Color.WHITE); mBgPaint.setAntiAlias(true); } public CircleView(Context context) { super(context); // TODO Auto-generated constructor stub mBgPaint.setColor(Color.WHITE); mBgPaint.setAntiAlias(true); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // TODO Auto-generated method stub super.onMeasure(widthMeasureSpec, heightMeasureSpec); int measuredWidth = getMeasuredWidth(); int measuredHeight = getMeasuredHeight(); int max = Math.max(measuredWidth, measuredHeight); setMeasuredDimension(max, max); } @Override public void setBackgroundColor(int color) { // TODO Auto-generated method stub mBgPaint.setColor(color); } /** * 设置通知个数显示 * @param text */ public void setNotifiText(int text){ // if(text>99){ // String string = 99+"+"; // setText(string); // return; // } setText(text+""); } @Override public void draw(Canvas canvas) { // TODO Auto-generated method stub canvas.setDrawFilter(pfd); canvas.drawCircle(getWidth()/2, getHeight()/2, Math.max(getWidth(), getHeight())/2, mBgPaint); super.draw(canvas); } } |
自定义布局用于动态生成多个控件 核心类
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package com.dyl.cloudtags; import java.util.LinkedList; import java.util.Random; import java.util.Vector; import android.content.Context; import android.graphics.Color; import android.graphics.Paint; import android.graphics.drawable.GradientDrawable; import android.util.AttributeSet; import android.view.Gravity; import android.view.LayoutInflater; 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; 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 = 12; public static final int TEXT_SIZE_MAX = 20; public static final int TEXT_SIZE_MIN = 10; 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<String> 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。<br/> * 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。<br/> * 在show()方法中其被赋值为false。<br/> * 真正能够动画显示的另一必要条件：width 和 height不为0。<br/> */ private boolean enableShow; private Random random; 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; private Context context; public KeywordsFlow(Context context) { super(context); init(); } public KeywordsFlow(Context context, AttributeSet attrs) { super(context, attrs); init(); } public KeywordsFlow(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(); } private void init() { lastStartAnimationTime = 0l; animDuration = ANIM_DURATION; random = new Random(); vecKeywords = new Vector<String>(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。<br/> * 之前已经存在的TextView将会显示退出动画。<br/> * * @return 正常显示动画返回true；反之为false。返回false原因如下：<br/> * 1.时间上不允许，受lastStartAnimationTime的制约；<br/> * 2.未获取到width和height的值。<br/> */ 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 CircleView txv = (CircleView) getChildAt(i); if (txv.getVisibility() == View.GONE) { removeView(txv); continue; } FrameLayout.LayoutParams layParams = (LayoutParams) txv .getLayoutParams(); int[] xy = new int[] { layParams.leftMargin, layParams.topMargin, txv.getWidth() }; AnimationSet animSet = getAnimationSet(xy, (width >> 1), (height >> 1), txtAnimOutType); txv.startAnimation(animSet); animSet.setAnimationListener(new AnimationListener() { public void onAnimationStart(Animation animation) { } public void onAnimationRepeat(Animation animation) { } public void onAnimationEnd(Animation animation) { txv.setOnClickListener(null); txv.setClickable(false); txv.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; LinkedList<Integer> listX = new LinkedList<Integer>(), listY = new LinkedList<Integer>(); 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)); } LinkedList<CircleView> listTxtTop = new LinkedList<CircleView>(); LinkedList<CircleView> listTxtBottom = new LinkedList<CircleView>(); for (int i = 0; i < size; i++) { String keyword = vecKeywords.get(i); // 随机位置，糙值 int xy[] = randomXY(random, listX, listY, xItem); // 实例化TextView final CircleView txv = new CircleView(getContext()); txv.setBackgroundResource(R.drawable.text_view_border); txv.setGravity(Gravity.CENTER); txv.setOnClickListener(itemClickListener); txv.setText(keyword); txv.setTextColor(Color.WHITE); txv.setPadding(8, 6, 8, 6); txv.setSingleLine(true); int r = random.nextInt(256); int g= random.nextInt(256); int b = random.nextInt(256); int mColor = Color.rgb(r, g, b); GradientDrawable myGrad = (GradientDrawable)txv.getBackground(); myGrad.setColor(mColor); // txv.setBackgroundColor(mColor); // 获取文本长度 Paint paint = txv.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); txv.setTag(xy); if (xy[IDX_Y] > yCenter) { listTxtBottom.add(txv); } else { listTxtTop.add(txv); } } 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<CircleView> listTxt, int xCenter, int yCenter, int yItem) { int size = listTxt.size(); sortXYList(listTxt, size); for (int i = 0; i < size; i++) { CircleView txv = listTxt.get(i); int[] iXY = (int[]) txv.getTag(); // 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<br/> // 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<br/> 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) { 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; } break inner; } } } 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(txv, layParams); // 动画 AnimationSet animSet = getAnimationSet(iXY, xCenter, yCenter, txtAnimInType); txv.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<CircleView> 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]) { CircleView iTmp = listTxt.get(i); CircleView 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; } //得到随机坐标 private int[] randomXY(Random ran, LinkedList<Integer> listX, LinkedList<Integer> 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<String> 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; } } |
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package com.dyl.cloudtags; /** * 搜索记录 * @author dengyalan * */public class SearchDataPojo { private String content = ""; public String getContent() { return content; } public SearchDataPojo setContent(String content) { this.content = content; return this; } } |
源码下载：Android实现圆形云标签效果
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原文链接：https://blog.csdn.net/shaoyezhangliwei/article/details/49281619
