Android仿QQ附近的人搜索展示功能

2019-12-12 06:26:29

字體：大中小

來源：轉載

供稿：網友

1.概述

老規矩，先上圖

這里寫圖片描述

原裝貨（就不錄制gif了，大家可以自己在Q群助手開啟共享地理位置，返回群聊天頁面就看到看到附近的人）：

這里寫圖片描述

看起來還是挺像的吧。

通過觀察，我們可以獲取得到如下關系

1.下面展示列表我們可以使用ViewPager來實現（當然如果你不覺得麻煩，你也可以用HorizontalScrollView來試試）

2.上面的掃描圖，肯定是個ViewGroup(因為里面的小圓點是可以點擊的，如果是View的話，對于這些小圓點的位置的判斷，以及對小圓點縮放動畫的處理都會超級麻煩，難以實現)，所以我們肯定需要自定義ViewGroup

3.確定好了是自定義ViewGroup后，對于里面需要放什么對象呢？沒錯，就是N個小圓點+一個掃描的大圈圈。

有了上面的分析，我們基本可以確定我們的項目結構如下了：

這里寫圖片描述

下面將逐個擊破，完成最終效果！

二.展示用的viewpager

通過上面的分析，可以確定我們首先需要一個been類 Info

public class Info {private int portraitId;//頭像idprivate String name;//名字private String age;//年齡private boolean sex;//false為男，true為女private float distance;//距離public int getPortraitId() {return portraitId;}public void setPortraitId(int portraitId) {this.portraitId = portraitId;}public String getAge() {return age;}public void setAge(String age) {this.age = age;}public float getDistance() {return distance;}public void setDistance(float distance) {this.distance = distance;}public String getName() {return name;}public void setName(String name) {this.name = name;}public boolean getSex() {return sex;}public void setSex(boolean sex) {this.sex = sex;}}

因為我們想要viewpager左右滑動的時候，當滑動速度大于一定值，則可以一次滑動兩個item，所以我們需要自定義一個獲取速度的ViewPager

public class CustomViewPager extends ViewPager{private long downTime;private float LastX;private float mSpeed;public CustomViewPager(Context context) {super(context);}public CustomViewPager(Context context, AttributeSet attrs) {super(context, attrs);}@Overridepublic boolean dispatchTouchEvent(MotionEvent ev) {float x = ev.getX();switch (ev.getAction()) {case MotionEvent.ACTION_DOWN:downTime = System.currentTimeMillis();LastX = x;break;case MotionEvent.ACTION_MOVE:x = ev.getX();break;case MotionEvent.ACTION_UP://計算得到手指從按下到離開的滑動速度mSpeed = (x - LastX) * 1000 / (System.currentTimeMillis() - downTime);break;}return super.dispatchTouchEvent(ev);}public float getSpeed() {return mSpeed;}public void setSpeed(float mSpeed) {this.mSpeed = mSpeed;}}

最后就是我們的MainAcitivyt中進行相應的設置

public class MainActivity extends Activity implements ViewPager.OnPageChangeListener, RadarViewGroup.IRadarClickListener {private CustomViewPager viewPager;private RelativeLayout ryContainer;private RadarViewGroup radarViewGroup;private int[] mImgs = {R.drawable.len, R.drawable.leo, R.drawable.lep,R.drawable.leq, R.drawable.ler, R.drawable.les, R.drawable.mln, R.drawable.mmz, R.drawable.mna,R.drawable.mnj, R.drawable.leo, R.drawable.leq, R.drawable.les, R.drawable.lep};private String[] mNames = {"ImmortalZ", "唐馬儒", "王尼瑪", "張全蛋", "蛋花", "王大錘", "叫獸", "哆啦A夢"};private int mPosition;private FixedSpeedScroller scroller;private SparseArray<Info> mDatas = new SparseArray<>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();initData();/*** 將Viewpager所在容器的事件分發交給ViewPager*/ryContainer.setOnTouchListener(new View.OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {return viewPager.dispatchTouchEvent(event);}});ViewpagerAdapter mAdapter = new ViewpagerAdapter();viewPager.setAdapter(mAdapter);//設置緩存數為展示的數目viewPager.setOffscreenPageLimit(mImgs.length);viewPager.setPageMargin(getResources().getDimensionPixelOffset(R.dimen.viewpager_margin));//設置切換動畫viewPager.setPageTransformer(true, new ZoomOutPageTransformer());viewPager.addOnPageChangeListener(this);setViewPagerSpeed(250);new Handler().postDelayed(new Runnable() {@Overridepublic void run() {radarViewGroup.setDatas(mDatas);}}, 1500);radarViewGroup.setiRadarClickListener(this);}private void initData() {for (int i = 0; i < mImgs.length; i++) {Info info = new Info();info.setPortraitId(mImgs[i]);info.setAge(((int) Math.random() * 25 + 16) + "歲");info.setName(mNames[(int) (Math.random() * mNames.length)]);info.setSex(i % 3 == 0 ? false : true);info.setDistance(Math.round((Math.random() * 10) * 100) / 100);mDatas.put(i, info);}}private void initView() {viewPager = (CustomViewPager) findViewById(R.id.vp);radarViewGroup = (RadarViewGroup) findViewById(R.id.radar);ryContainer = (RelativeLayout) findViewById(R.id.ry_container);}/*** 設置ViewPager切換速度** @param duration*/private void setViewPagerSpeed(int duration) {try {Field field = ViewPager.class.getDeclaredField("mScroller");field.setAccessible(true);scroller = new FixedSpeedScroller(MainActivity.this, new AccelerateInterpolator());field.set(viewPager, scroller);scroller.setmDuration(duration);} catch (NoSuchFieldException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();}}@Overridepublic void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {mPosition = position;}@Overridepublic void onPageSelected(int position) {radarViewGroup.setCurrentShowItem(position);LogUtil.m("當前位置 " + mPosition);LogUtil.m("速度 " + viewPager.getSpeed());//當手指左滑速度大于2000時viewpager右滑（注意是item+2）if (viewPager.getSpeed() < -1800) {viewPager.setCurrentItem(mPosition + 2);LogUtil.m("位置 " + mPosition);viewPager.setSpeed(0);} else if (viewPager.getSpeed() > 1800 && mPosition > 0) {//當手指右滑速度大于2000時viewpager左滑（注意item-1即可）viewPager.setCurrentItem(mPosition - 1);LogUtil.m("位置 " + mPosition);viewPager.setSpeed(0);}}@Overridepublic void onPageScrollStateChanged(int state) {}@Overridepublic void onRadarItemClick(int position) {viewPager.setCurrentItem(position);}class ViewpagerAdapter extends PagerAdapter {@Overridepublic Object instantiateItem(ViewGroup container, final int position) {final Info info = mDatas.get(position);//設置一大堆演示用的數據，麻里麻煩~~View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.viewpager_layout, null);ImageView ivPortrait = (ImageView) view.findViewById(R.id.iv);ImageView ivSex = (ImageView) view.findViewById(R.id.iv_sex);TextView tvName = (TextView) view.findViewById(R.id.tv_name);TextView tvDistance = (TextView) view.findViewById(R.id.tv_distance);tvName.setText(info.getName());tvDistance.setText(info.getDistance() + "km");ivPortrait.setImageResource(info.getPortraitId());if (info.getSex()) {ivSex.setImageResource(R.drawable.girl);} else {ivSex.setImageResource(R.drawable.boy);}ivPortrait.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(MainActivity.this, "這是 " + info.getName() + " >.<", Toast.LENGTH_SHORT).show();}});container.addView(view);return view;}@Overridepublic int getCount() {return mImgs.length;}@Overridepublic boolean isViewFromObject(View view, Object object) {return view == object;}@Overridepublic void destroyItem(ViewGroup container, int position, Object object) {View view = (View) object;container.removeView(view);}}}

在貼出MainAcitivity對應的XML

<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="@drawable/lkd"android:paddingLeft="5dp"android:paddingRight="5dp"><mr_immortalz.com.modelqq.custom.RadarViewGroupandroid:id="@+id/radar"android:layout_width="280dp"android:layout_height="280dp"android:layout_centerHorizontal="true"android:layout_marginTop="50dp"><mr_immortalz.com.modelqq.custom.RadarViewandroid:id="@id/id_scan_circle"android:layout_width="280dp"android:layout_height="280dp"/></mr_immortalz.com.modelqq.custom.RadarViewGroup><RelativeLayoutandroid:id="@+id/ry_container"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_marginBottom="25dp"android:clipChildren="false"><mr_immortalz.com.modelqq.custom.CustomViewPagerandroid:id="@+id/vp"android:layout_width="130dp"android:layout_height="160dp"android:layout_centerInParent="true"android:layout_marginLeft="120dp"android:layout_marginRight="120dp"android:clipChildren="false"/></RelativeLayout></RelativeLayout>

注意如果我們想要讓ViewPager一次顯示多個，需要設置其所在父容器 Android:clipChildren=”false”
意思就是不限制子View在其范圍內。

細心的你可能會發現MainAcitivity中有

viewPager.setPageTransformer(true, new ZoomOutPageTransformer());

這個，沒錯，這個就是用來控制我們的切換動畫（我在谷歌官方提供的這個基礎上進行了修改，也是很好理解）

public class ZoomOutPageTransformer implements ViewPager.PageTransformer {private static final float MIN_SCALE = 0.70f;private static final float MIN_ALPHA = 0.5f;public void transformPage(View view, float position) {int pageWidth = view.getWidth();int pageHeight = view.getHeight();if (position < -1) { // [-Infinity,-1)// This page is way off-screen to the left.view.setAlpha(MIN_ALPHA);view.setScaleX(MIN_SCALE);view.setScaleY(MIN_SCALE);} else if (position <= 1) { // [-1,1]// Modify the default slide transition to shrink the page as wellfloat scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));float vertMargin = pageHeight * (1 - scaleFactor) / 2;float horzMargin = pageWidth * (1 - scaleFactor) / 2;if (position < 0) {view.setTranslationX(horzMargin - vertMargin / 2);view.setScaleX(1 + 0.3f * position);view.setScaleY(1 + 0.3f * position);} else {view.setTranslationX(-horzMargin + vertMargin / 2);view.setScaleX(1 - 0.3f * position);view.setScaleY(1 - 0.3f * position);}// Scale the page down (between MIN_SCALE and 1)// Fade the page relative to its size.view.setAlpha(MIN_ALPHA + (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA));} else { // (1,+Infinity]// This page is way off-screen to the right.view.setScaleX(MIN_SCALE);view.setScaleY(MIN_SCALE);view.setAlpha(MIN_ALPHA);}}}

完成了上面這些代碼，我們的ViewPager就算搞定了

這里寫圖片描述

三.實現雷達掃描圖

代碼中也注釋得很清楚了，當然因為要掃描，我們需要不停的轉動，所以這里我們用到了矩陣變換Matrix，掃描消息的停頓和傳遞我們用到了Runnable ，如果要是覺得在向主線程一直投遞變換的消息對主線程不好，你可以考慮下用SurfaceView來實現

public class RadarView extends View {private Paint mPaintLine;//畫圓線需要用到的paintprivate Paint mPaintCircle;//畫圓需要用到的paintprivate Paint mPaintScan;//畫掃描需要用到的paintprivate int mWidth, mHeight;//整個圖形的長度和寬度private Matrix matrix = new Matrix();//旋轉需要的矩陣private int scanAngle;//掃描旋轉的角度private Shader scanShader;//掃描渲染shaderprivate Bitmap centerBitmap;//最中間icon//每個圓圈所占的比例private static float[] circleProportion = {1 / 13f, 2 / 13f, 3 / 13f, 4 / 13f, 5 / 13f, 6 / 13f};private int scanSpeed = 5;private int currentScanningCount;//當前掃描的次數private int currentScanningItem;//當前掃描顯示的itemprivate int maxScanItemCount;//最大掃描次數private boolean startScan = false;//只有設置了數據后才會開始掃描private IScanningListener iScanningListener;//掃描時監聽回調接口public void setScanningListener(IScanningListener iScanningListener) {this.iScanningListener = iScanningListener;}private Runnable run = new Runnable() {@Overridepublic void run() {scanAngle = (scanAngle + scanSpeed) % 360;matrix.postRotate(scanSpeed, mWidth / 2, mHeight / 2);invalidate();postDelayed(run, 130);//開始掃描顯示標志為true 且 只掃描一圈if (startScan && currentScanningCount <= (360 / scanSpeed)) {if (iScanningListener != null && currentScanningCount % scanSpeed == 0&& currentScanningItem < maxScanItemCount) {iScanningListener.onScanning(currentScanningItem, scanAngle);currentScanningItem++;} else if (iScanningListener != null && currentScanningItem == maxScanItemCount) {iScanningListener.onScanSuccess();}currentScanningCount++;}}};public RadarView(Context context) {this(context, null);}public RadarView(Context context, AttributeSet attrs) {this(context, attrs, 0);}public RadarView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);init();post(run);}private void init() {mPaintLine = new Paint();mPaintLine.setColor(getResources().getColor(R.color.line_color_blue));mPaintLine.setAntiAlias(true);mPaintLine.setStrokeWidth(1);mPaintLine.setStyle(Paint.Style.STROKE);mPaintCircle = new Paint();mPaintCircle.setColor(Color.WHITE);mPaintCircle.setAntiAlias(true);mPaintScan = new Paint();mPaintScan.setStyle(Paint.Style.FILL_AND_STROKE);}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {setMeasuredDimension(measureSize(widthMeasureSpec), measureSize(widthMeasureSpec));mWidth = getMeasuredWidth();mHeight = getMeasuredHeight();mWidth = mHeight = Math.min(mWidth, mHeight);centerBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.circle_photo);//設置掃描渲染的shaderscanShader = new SweepGradient(mWidth / 2, mHeight / 2,new int[]{Color.TRANSPARENT, Color.parseColor("#84B5CA")}, null);}private int measureSize(int measureSpec) {int result = 0;int specMode = MeasureSpec.getMode(measureSpec);int specSize = MeasureSpec.getSize(measureSpec);if (specMode == MeasureSpec.EXACTLY) {result = specSize;} else {result = 300;if (specMode == MeasureSpec.AT_MOST) {result = Math.min(result, specSize);}}return result;}@Overrideprotected void onDraw(Canvas canvas) {drawCircle(canvas);drawScan(canvas);drawCenterIcon(canvas);}/*** 繪制圓線圈** @param canvas*/private void drawCircle(Canvas canvas) {canvas.drawCircle(mWidth / 2, mHeight / 2, mWidth * circleProportion[1], mPaintLine); // 繪制小圓canvas.drawCircle(mWidth / 2, mHeight / 2, mWidth * circleProportion[2], mPaintLine); // 繪制中圓canvas.drawCircle(mWidth / 2, mHeight / 2, mWidth * circleProportion[3], mPaintLine); // 繪制中大圓canvas.drawCircle(mWidth / 2, mHeight / 2, mWidth * circleProportion[4], mPaintLine); // 繪制大圓canvas.drawCircle(mWidth / 2, mHeight / 2, mWidth * circleProportion[5], mPaintLine); // 繪制大大圓}/*** 繪制掃描** @param canvas*/private void drawScan(Canvas canvas) {canvas.save();mPaintScan.setShader(scanShader);canvas.concat(matrix);canvas.drawCircle(mWidth / 2, mHeight / 2, mWidth * circleProportion[4], mPaintScan);canvas.restore();}/*** 繪制最中間的圖標** @param canvas*/private void drawCenterIcon(Canvas canvas) {canvas.drawBitmap(centerBitmap, null,new Rect((int) (mWidth / 2 - mWidth * circleProportion[0]), (int) (mHeight / 2 - mWidth * circleProportion[0]),(int) (mWidth / 2 + mWidth * circleProportion[0]), (int) (mHeight / 2 + mWidth * circleProportion[0])), mPaintCircle);}public interface IScanningListener {//正在掃描（此時還沒有掃描完畢）時回調void onScanning(int position, float scanAngle);//掃描成功時回調void onScanSuccess();}public void setMaxScanItemCount(int maxScanItemCount) {this.maxScanItemCount = maxScanItemCount;}/*** 開始掃描*/public void startScan() {this.startScan = true;}}

四.完成小圓點的放置

現在我們的掃描圖有了，對比發現我們還差啥？沒錯，就是小圓點

public class CircleView extends View {private Paint mPaint;private Bitmap mBitmap;private float radius = DisplayUtils.dp2px(getContext(),9);//半徑private float disX;//位置Xprivate float disY;//位置Yprivate float angle;//旋轉的角度private float proportion;//根據遠近距離的不同計算得到的應該占的半徑比例public float getProportion() {return proportion;}public void setProportion(float proportion) {this.proportion = proportion;}public float getAngle() {return angle;}public void setAngle(float angle) {this.angle = angle;}public float getDisX() {return disX;}public void setDisX(float disX) {this.disX = disX;}public float getDisY() {return disY;}public void setDisY(float disY) {this.disY = disY;}public CircleView(Context context) {this(context, null);}public CircleView(Context context, AttributeSet attrs) {this(context, attrs, 0);}public CircleView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);init();}private void init() {mPaint = new Paint();mPaint.setColor(getResources().getColor(R.color.bg_color_pink));mPaint.setAntiAlias(true);}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);setMeasuredDimension(measureSize(widthMeasureSpec), measureSize(heightMeasureSpec));}private int measureSize(int measureSpec) {int result = 0;int specMode = MeasureSpec.getMode(measureSpec);int specSize = MeasureSpec.getSize(measureSpec);if (specMode == MeasureSpec.EXACTLY) {result = specSize;} else {result = DisplayUtils.dp2px(getContext(),18);if (specMode == MeasureSpec.AT_MOST) {result = Math.min(result, specSize);}}return result;}@Overrideprotected void onDraw(Canvas canvas) {canvas.drawCircle(radius, radius, radius, mPaint);if (mBitmap != null) {canvas.drawBitmap(mBitmap, null, new Rect(0, 0, 2 * (int) radius, 2 * (int) radius), mPaint);}}public void setPaintColor(int resId) {mPaint.setColor(resId);invalidate();}public void setPortraitIcon(int resId) {mBitmap = BitmapFactory.decodeResource(getResources(), resId);invalidate();}public void clearPortaitIcon(){mBitmap = null;invalidate();}}

有了小圓點，我們最后只需要把掃描圖和小圓點放在一起就好了因為我們是想變掃描變出現小圓點，所以我們需要在RadarView中定義一個接口IScanningListener，告訴RadarViewGroup我正在掃描，你快讓小圓點出現吧

所以在RadarViewGroup的onScanning中需要調用requestLayout();

public class RadarViewGroup extends ViewGroup implements RadarView.IScanningListener {private int mWidth, mHeight;//viewgroup的寬高private SparseArray<Float> scanAngleList = new SparseArray<>();//記錄展示的item所在的掃描位置角度private SparseArray<Info> mDatas;//數據源private int dataLength;//數據源長度private int minItemPosition;//最小距離的item所在數據源中的位置private CircleView currentShowChild;//當前展示的itemprivate CircleView minShowChild;//最小距離的itemprivate IRadarClickListener iRadarClickListener;//雷達圖中點擊監聽CircleView小圓點回調接口public void setiRadarClickListener(IRadarClickListener iRadarClickListener) {this.iRadarClickListener = iRadarClickListener;}public RadarViewGroup(Context context) {this(context, null);}public RadarViewGroup(Context context, AttributeSet attrs) {this(context, attrs, 0);}public RadarViewGroup(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {setMeasuredDimension(measureSize(widthMeasureSpec), measureSize(heightMeasureSpec));mWidth = getMeasuredWidth();mHeight = getMeasuredHeight();mWidth = mHeight = Math.min(mWidth, mHeight);//測量每個childrenmeasureChildren(widthMeasureSpec, heightMeasureSpec);for (int i = 0; i < getChildCount(); i++) {View child = getChildAt(i);if (child.getId() == R.id.id_scan_circle) {//為雷達掃描圖設置需要的屬性((RadarView) child).setScanningListener(this);//考慮到數據沒有添加前掃描圖在掃描，但是不會開始為CircleView布局if (mDatas != null && mDatas.size() > 0) {((RadarView) child).setMaxScanItemCount(mDatas.size());((RadarView) child).startScan();}continue;}}}@Overrideprotected void onLayout(boolean changed, int l, int t, int r, int b) {int childCount = getChildCount();//首先放置雷達掃描圖View view = findViewById(R.id.id_scan_circle);if (view != null) {view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());}//放置雷達圖中需要展示的item圓點for (int i = 0; i < childCount; i++) {final int j = i;final View child = getChildAt(i);if (child.getId() == R.id.id_scan_circle) {//如果不是Circleview跳過continue;}//設置CircleView小圓點的坐標信息//坐標 = 旋轉角度 * 半徑 * 根據遠近距離的不同計算得到的應該占的半徑比例((CircleView) child).setDisX((float) Math.cos(Math.toRadians(scanAngleList.get(i - 1) - 5))* ((CircleView) child).getProportion() * mWidth / 2);((CircleView) child).setDisY((float) Math.sin(Math.toRadians(scanAngleList.get(i - 1) - 5))* ((CircleView) child).getProportion() * mWidth / 2);//如果掃描角度記錄SparseArray中的對應的item的值為0，// 說明還沒有掃描到該item，跳過對該item的layout//（scanAngleList設置數據時全部設置的value=0，// 當onScanning時，value設置的值始終不會0，具體可以看onScanning中的實現）if (scanAngleList.get(i - 1) == 0) {continue;}//放置Circle小圓點child.layout((int) ((CircleView) child).getDisX() + mWidth / 2, (int) ((CircleView) child).getDisY() + mHeight / 2,(int) ((CircleView) child).getDisX() + child.getMeasuredWidth() + mWidth / 2,(int) ((CircleView) child).getDisY() + child.getMeasuredHeight() + mHeight / 2);//設置點擊事件child.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {resetAnim(currentShowChild);currentShowChild = (CircleView) child;//因為雷達圖是childAt(0),所以這里需要作-1才是正確的CirclestartAnim(currentShowChild, j - 1);if (iRadarClickListener != null) {iRadarClickListener.onRadarItemClick(j - 1);}}});}}private int measureSize(int measureSpec) {int result = 0;int specMode = MeasureSpec.getMode(measureSpec);int specSize = MeasureSpec.getSize(measureSpec);if (specMode == MeasureSpec.EXACTLY) {result = specSize;} else {result = 300;if (specMode == MeasureSpec.AT_MOST) {result = Math.min(result, specSize);}}return result;}/*** 設置數據** @param mDatas*/public void setDatas(SparseArray<Info> mDatas) {this.mDatas = mDatas;dataLength = mDatas.size();float min = Float.MAX_VALUE;float max = Float.MIN_VALUE;//找到距離的最大值，最小值對應的minItemPositionfor (int j = 0; j < dataLength; j++) {Info item = mDatas.get(j);if (item.getDistance() < min) {min = item.getDistance();minItemPosition = j;}if (item.getDistance() > max) {max = item.getDistance();}scanAngleList.put(j, 0f);}//根據數據源信息動態添加CircleViewfor (int i = 0; i < dataLength; i++) {CircleView circleView = new CircleView(getContext());if (mDatas.get(i).getSex()) {circleView.setPaintColor(getResources().getColor(R.color.bg_color_pink));} else {circleView.setPaintColor(getResources().getColor(R.color.bg_color_blue));}//根據遠近距離的不同計算得到的應該占的半徑比例 0.312-0.832circleView.setProportion((mDatas.get(i).getDistance() / max + 0.6f) * 0.52f);if (minItemPosition == i) {minShowChild = circleView;}addView(circleView);}}/*** 雷達圖沒有掃描完畢時回調** @param position* @param scanAngle*/@Overridepublic void onScanning(int position, float scanAngle) {if (scanAngle == 0) {scanAngleList.put(position, 1f);} else {scanAngleList.put(position, scanAngle);}requestLayout();}/*** 雷達圖掃描完畢時回調*/@Overridepublic void onScanSuccess() {LogUtil.m("完成回調");resetAnim(currentShowChild);currentShowChild = minShowChild;startAnim(currentShowChild, minItemPosition);}/*** 恢復CircleView小圓點原大小** @param object*/private void resetAnim(CircleView object) {if (object != null) {object.clearPortaitIcon();ObjectAnimator.ofFloat(object, "scaleX", 1f).setDuration(300).start();ObjectAnimator.ofFloat(object, "scaleY", 1f).setDuration(300).start();}}/*** 放大CircleView小圓點大小** @param object* @param position*/private void startAnim(CircleView object, int position) {if (object != null) {object.setPortraitIcon(mDatas.get(position).getPortraitId());ObjectAnimator.ofFloat(object, "scaleX", 2f).setDuration(300).start();ObjectAnimator.ofFloat(object, "scaleY", 2f).setDuration(300).start();}}/*** 雷達圖中點擊監聽CircleView小圓點回調接口*/public interface IRadarClickListener {void onRadarItemClick(int position);}/*** 根據position，放大指定的CircleView小圓點** @param position*/public void setCurrentShowItem(int position) {CircleView child = (CircleView) getChildAt(position + 1);resetAnim(currentShowChild);currentShowChild = child;startAnim(currentShowChild, position);}}

每次點擊雷達圖中的小圓點都會告訴ViewPager切換到指定的頁面，所以RadarViewGroup中需要定義一個IRadarClickListener，讓ViewPager所在的MainAcitivity去實現該接口
完成的效果就是這樣了

這里寫圖片描述