Android實(shí)現(xiàn)隨機(jī)圓形云標(biāo)簽效果
更新時(shí)間：2018年05月31日 09:33:51 作者：再見孫悟空_
這篇文章主要為大家詳細(xì)介紹了Android實(shí)現(xiàn)隨機(jī)圓形云標(biāo)簽效果，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下
本文實(shí)例為大家分享了Android實(shí)現(xiàn)圓形云標(biāo)簽效果展示的具體代碼，供大家參考，具體內(nèi)容如下
下面是實(shí)現(xiàn)的效果圖：
這個(gè)適合用于選擇 用戶的一些興趣標(biāo)簽，個(gè)性名片等。
代碼：
Activity
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();// 獲得點(diǎn)擊的標(biāo)簽
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);
}
}
/**
* 讀取歷史搜索記錄
*/
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沒有值得話，就顯示默認(rèn)的數(shù)據(jù)
keywords = new String[] { "口味蝦", "牛蛙", "火鍋", "真功夫", "料理",
"密室逃", "天成房", "波比艾" };
}
}
/*
* 保存搜索記錄
*/
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);
}
}
// 清除歷史數(shù)據(jù)
private void clearSearchHistory() {
searchItem.removeAll(searchItem);
sp.edit().clear().commit();
Toast.makeText(this, "清除歷史記錄", Toast.LENGTH_LONG).show();
}
}
用于將控件設(shè)置為圓形的自定義TextView
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);
}
/**
* 設(shè)置通知個(gè)數(shù)顯示
* @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);
}
}
自定義布局用于動態(tài)生成多個(gè)控件 核心類
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;
/** 由外至內(nèi)的動畫。 */
public static final int ANIMATION_IN = 1;
/** 由內(nèi)至外的動畫。 */
public static final int ANIMATION_OUT = 2;
/** 位移動畫類型：從外圍移動到坐標(biāo)點(diǎn)。 */
public static final int OUTSIDE_TO_LOCATION = 1;
/** 位移動畫類型：從坐標(biāo)點(diǎn)移動到外圍。 */
public static final int LOCATION_TO_OUTSIDE = 2;
/** 位移動畫類型：從中心點(diǎn)移動到坐標(biāo)點(diǎn)。 */
public static final int CENTER_TO_LOCATION = 3;
/** 位移動畫類型：從坐標(biāo)點(diǎn)移動到中心點(diǎn)。 */
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;
/** 存儲顯示的關(guān)鍵字。 */
private Vector<String> vecKeywords;
private int width, height;
/**
* go2Show()中被賦值為true，標(biāo)識開發(fā)人員觸發(fā)其開始動畫顯示。<br/>
* 本標(biāo)識的作用是防止在填充keywrods未完成的過程中獲取到width和height后提前啟動動畫。<br/>
* 在show()方法中其被賦值為false。<br/>
* 真正能夠動畫顯示的另一必要條件：width 和 height不為0。<br/>
*/
private boolean enableShow;
private Random random;
private int txtAnimInType, txtAnimOutType;
/** 最近一次啟動動畫顯示的時(shí)間。 */
private long lastStartAnimationTime;
/** 動畫運(yùn)行時(shí)間。 */
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;
}
/**
* 開始動畫顯示。<br/>
* 之前已經(jīng)存在的TextView將會顯示退出動畫。<br/>
*
* @return 正常顯示動畫返回true；反之為false。返回false原因如下：<br/>
* 1.時(shí)間上不允許，受lastStartAnimationTime的制約；<br/>
* 2.未獲取到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++) {
// 準(zhǔn)備隨機(jī)候選數(shù)，分別對應(yīng)x/y軸位置
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);
// 隨機(jī)位置，糙值
int xy[] = randomXY(random, listX, listY, xItem);
// 實(shí)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);
// 獲取文本長度
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坐標(biāo)
if (xy[IDX_X] + strWidth > width - (xItem >> 1)) {
int baseX = width - strWidth;
// 減少文本右邊緣一樣的概率
xy[IDX_X] = baseX - xItem + random.nextInt(xItem >> 1);
} else if (xy[IDX_X] == 0) {
// 減少文本左邊緣一樣的概率
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坐標(biāo)將將其添加到容器上。 */
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坐標(biāo)
int yDistance = iXY[IDX_Y] - yCenter;
// 對于最靠近中心點(diǎn)的，其值不會大于yItem<br/>
// 對于可以一路下降到中心點(diǎn)的，則該值也是其應(yīng)調(diào)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軸以中心點(diǎn)為分隔線，在同一側(cè)
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) {
// 取消默認(rèn)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);
// 已經(jīng)調(diào)整過前i個(gè)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);
// 動畫
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;
}
/**
* 根據(jù)與中心點(diǎn)的距離由近到遠(yuǎn)進(jìn)行冒泡排序。
*
* @param endIdx
* 起始位置。
* @param txtArr
* 待排序的數(shù)組。
*
*/
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線段與B線段所代表的直線在X軸映射上是否有交集。 */
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;
}
//得到隨機(jī)坐標(biāo)
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。在清除之前不會顯示動畫。 */
public void rubAllViews() {
removeAllViews();
}
public void setOnItemClickListener(OnClickListener listener) {
itemClickListener = listener;
}
}
package com.dyl.cloudtags;
/**
* 搜索記錄
* @author dengyalan
*
*/
public class SearchDataPojo {
private String content = "";
public String getContent() {
return content;
}
public SearchDataPojo setContent(String content) {
this.content = content;
return this;
}
}
源碼下載：Android實(shí)現(xiàn)圓形云標(biāo)簽效果
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