万能选择器（可自定义生日选择，地区选择，性别选择，，，，）;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;

import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;

/**
 * Created by JillFung on 2016/8/18.
 */
public class LoopView extends View {

    private float scaleX = 1.05F;

    public enum ACTION {
        // 点击，滑翔(滑到尽头)，拖拽事件
        CLICK, FLING, DAGGLE
    }

    Context context;

    Handler handler;
    private GestureDetector gestureDetector;
    OnItemSelectedListener onItemSelectedListener;

    // Timer mTimer;
    ScheduledExecutorService mExecutor = Executors.newSingleThreadScheduledExecutor();
    private ScheduledFuture mFuture;

    Paint paintOuterText;
    Paint paintCenterText;
    Paint paintIndicator;

    List items;

    int textSize;
    int maxTextWidth;
    int maxTextHeight;

    int colorGray;
    int colorBlack;
    int colorLightGray;

    // 条目间距倍数
    float lineSpacingMultiplier;
    boolean isLoop;

    // 第一条线Y坐标值
    int firstLineY;
    int secondLineY;

    int totalScrollY;
    int initPosition;
    private int selectedItem;
    int preCurrentIndex;
    int change;

    // 显示几个条目
    int itemsVisible;

    int measuredHeight;
    int measuredWidth;
    int paddingLeft = 0;
    int paddingRight = 0;

    // 半圆周长
    int halfCircumference;
    // 半径
    int radius;

    private int mOffset = 0;
    private float previousY;
    long startTime = 0;

    private Rect tempRect = new Rect();

    public LoopView(Context context) {
        super(context);
        initLoopView(context);
    }

    public LoopView(Context context, AttributeSet attributeset) {
        super(context, attributeset);
        initLoopView(context);
    }

    public LoopView(Context context, AttributeSet attributeset, int defStyleAttr) {
        super(context, attributeset, defStyleAttr);
        initLoopView(context);
    }

    private void initLoopView(Context context) {
        this.context = context;
        handler = new MessageHandler(this);
        gestureDetector = new GestureDetector(context, new LoopViewGestureListener(this));
        gestureDetector.setIsLongpressEnabled(false);

        lineSpacingMultiplier = 2.0F;
        isLoop = true;
        itemsVisible = 9;
        textSize = 0;
        colorGray = 0xffafafaf;
        colorBlack = 0xff313131;
        colorLightGray = 0xffc5c5c5;

        totalScrollY = 0;
        initPosition = -1;

        initPaints();

        setTextSize(16F);
    }

    private void initPaints() {
        paintOuterText = new Paint();
        paintOuterText.setColor(colorGray);
        paintOuterText.setAntiAlias(true);
        paintOuterText.setTypeface(Typeface.MONOSPACE);
        paintOuterText.setTextSize(textSize);

        paintCenterText = new Paint();
        paintCenterText.setColor(colorBlack);
        paintCenterText.setAntiAlias(true);
        paintCenterText.setTextScaleX(scaleX);
        paintCenterText.setTypeface(Typeface.MONOSPACE);
        paintCenterText.setTextSize(textSize);

        paintIndicator = new Paint();
        paintIndicator.setColor(colorLightGray);
        paintIndicator.setAntiAlias(true);

        if (android.os.Build.VERSION.SDK_INT >= 11) {
            setLayerType(LAYER_TYPE_SOFTWARE, null);
        }
    }

    private void remeasure() {
        if (items == null) {
            return;
        }

        measureTextWidthHeight();

        halfCircumference = (int) (maxTextHeight * lineSpacingMultiplier * (itemsVisible - 1));
        measuredHeight = (int) ((halfCircumference * 2) / Math.PI);
        radius = (int) (halfCircumference / Math.PI);
        measuredWidth = maxTextWidth + paddingLeft + paddingRight;
        firstLineY = (int) ((measuredHeight - lineSpacingMultiplier * maxTextHeight) / 2.0F);
        secondLineY = (int) ((measuredHeight + lineSpacingMultiplier * maxTextHeight) / 2.0F);
        if (initPosition == -1) {
            if (isLoop) {
                initPosition = (items.size() + 1) / 2;
            } else {
                initPosition = 0;
            }
        }

        preCurrentIndex = initPosition;
    }

    private void measureTextWidthHeight() {
        for (int i = 0; i < items.size(); i++) {
            String s1 = items.get(i);
            paintCenterText.getTextBounds(s1, 0, s1.length(), tempRect);
            int textWidth = tempRect.width();
            if (textWidth > maxTextWidth) {
                maxTextWidth = (int) (textWidth * scaleX);
            }
            paintCenterText.getTextBounds("\u661F\u671F", 0, 2, tempRect); // 星期
            int textHeight = tempRect.height();
            if (textHeight > maxTextHeight) {
                maxTextHeight = textHeight;
            }
        }

    }

    void smoothScroll(ACTION action) {
        cancelFuture();
        if (action == ACTION.FLING || action == ACTION.DAGGLE) {
            float itemHeight = lineSpacingMultiplier * maxTextHeight;
            mOffset = (int) ((totalScrollY % itemHeight + itemHeight) % itemHeight);
            if ((float) mOffset > itemHeight / 2.0F) {
                mOffset = (int) (itemHeight - (float) mOffset);
            } else {
                mOffset = -mOffset;
            }
        }
        mFuture = mExecutor.scheduleWithFixedDelay(new SmoothScrollTimerTask(this, mOffset), 0, 10, TimeUnit.MILLISECONDS);
    }

//    void smoothScroll() {
//        int offset = (int) (totalScrollY % (lineSpacingMultiplier * maxTextHeight));
//        cancelFuture();
//        mFuture = mExecutor.scheduleWithFixedDelay(new SmoothScrollTimerTask(this, offset), 0, 10, TimeUnit.MILLISECONDS);
//    }

    protected final void scrollBy(float velocityY) {
        cancelFuture();
        // 修改这个值可以改变滑行速度
        int velocityFling = 10;
        mFuture = mExecutor.scheduleWithFixedDelay(new InertiaTimerTask(this, velocityY), 0, velocityFling, TimeUnit.MILLISECONDS);
    }

    public void cancelFuture() {
        if (mFuture != null && !mFuture.isCancelled()) {
            mFuture.cancel(true);
            mFuture = null;
        }
    }

    public final void setNotLoop() {
        isLoop = false;
    }

    public final void setTextSize(float size) {
        if (size > 0.0F) {
            textSize = (int) (context.getResources().getDisplayMetrics().density * size);
            paintOuterText.setTextSize(textSize);
            paintCenterText.setTextSize(textSize);
        }
    }

    public final void setInitPosition(int initPosition) {
        if (initPosition < 0) {
            this.initPosition = 0;
        } else {
            if (items != null && (items.size() - 1) >= initPosition) {
                this.initPosition = initPosition;
            }
        }
    }

    public final void setListener(OnItemSelectedListener OnItemSelectedListener) {
        onItemSelectedListener = OnItemSelectedListener;
    }

    public final void setItems(List items) {
        this.items = items;
        remeasure();
        invalidate();
    }

    @Override
    public int getPaddingLeft() {
        return paddingLeft;
    }

    @Override
    public int getPaddingRight() {
        return paddingRight;
    }

    // 设置左右内边距
    public void setViewPadding(int left, int top, int right, int bottom) {
        paddingLeft = left;
        paddingRight = right;
    }

    public final int getSelectedItem() {
        return selectedItem;
    }
//
//    protected final void scrollBy(float velocityY) {
//        Timer timer = new Timer();
//        mTimer = timer;
//        timer.schedule(new InertiaTimerTask(this, velocityY, timer), 0L, 20L);
//    }

    protected final void onItemSelected() {
        if (onItemSelectedListener != null) {
            postDelayed(new OnItemSelectedRunnable(this), 200L);
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if (items == null) {
            return;
        }

        String as[] = new String[itemsVisible];
        change = (int) (totalScrollY / (lineSpacingMultiplier * maxTextHeight));
        preCurrentIndex = initPosition + change % items.size();

        if (!isLoop) {
            if (preCurrentIndex < 0) {
                preCurrentIndex = 0;
            }
            if (preCurrentIndex > items.size() - 1) {
                preCurrentIndex = items.size() - 1;
            }
        } else {
            if (preCurrentIndex < 0) {
                preCurrentIndex = items.size() + preCurrentIndex;
            }
            if (preCurrentIndex > items.size() - 1) {
                preCurrentIndex = preCurrentIndex - items.size();
            }
        }

        int j2 = (int) (totalScrollY % (lineSpacingMultiplier * maxTextHeight));
        // 设置as数组中每个元素的值
        int k1 = 0;
        while (k1 < itemsVisible) {
            int l1 = preCurrentIndex - (itemsVisible / 2 - k1);
            if (isLoop) {
                while (l1 < 0) {
                    l1 = l1 + items.size();
                }
                while (l1 > items.size() - 1) {
                    l1 = l1 - items.size();
                }
                as[k1] = items.get(l1);
            } else if (l1 < 0) {
                as[k1] = "";
            } else if (l1 > items.size() - 1) {
                as[k1] = "";
            } else {
                as[k1] = items.get(l1);
            }
            k1++;
        }
        canvas.drawLine(0.0F, firstLineY, measuredWidth, firstLineY, paintIndicator);
        canvas.drawLine(0.0F, secondLineY, measuredWidth, secondLineY, paintIndicator);

        int j1 = 0;
        while (j1 < itemsVisible) {
            canvas.save();
            // L(弧长)=α（弧度）* r(半径) （弧度制）
            // 求弧度--> (L * π ) / (π * r)   (弧长X派/半圆周长)
            float itemHeight = maxTextHeight * lineSpacingMultiplier;
            double radian = ((itemHeight * j1 - j2) * Math.PI) / halfCircumference;
            // 弧度转换成角度(把半圆以Y轴为轴心向右转90度，使其处于第一象限及第四象限
            float angle = (float) (90D - (radian / Math.PI) * 180D);
            if (angle >= 90F || angle <= -90F) {
                canvas.restore();
            } else {
                int translateY = (int) (radius - Math.cos(radian) * radius - (Math.sin(radian) * maxTextHeight) / 2D);
                canvas.translate(0.0F, translateY);
                canvas.scale(1.0F, (float) Math.sin(radian));
                if (translateY <= firstLineY && maxTextHeight + translateY >= firstLineY) {
                    // 条目经过第一条线
                    canvas.save();
                    canvas.clipRect(0, 0, measuredWidth, firstLineY - translateY);
                    canvas.drawText(as[j1], getTextX(as[j1], paintOuterText, tempRect), maxTextHeight, paintOuterText);
                    canvas.restore();
                    canvas.save();
                    canvas.clipRect(0, firstLineY - translateY, measuredWidth, (int) (itemHeight));
                    canvas.drawText(as[j1], getTextX(as[j1], paintCenterText, tempRect), maxTextHeight, paintCenterText);
                    canvas.restore();
                } else if (translateY <= secondLineY && maxTextHeight + translateY >= secondLineY) {
                    // 条目经过第二条线
                    canvas.save();
                    canvas.clipRect(0, 0, measuredWidth, secondLineY - translateY);
                    canvas.drawText(as[j1], getTextX(as[j1], paintCenterText, tempRect), maxTextHeight, paintCenterText);
                    canvas.restore();
                    canvas.save();
                    canvas.clipRect(0, secondLineY - translateY, measuredWidth, (int) (itemHeight));
                    canvas.drawText(as[j1], getTextX(as[j1], paintOuterText, tempRect), maxTextHeight, paintOuterText);
                    canvas.restore();
                } else if (translateY >= firstLineY && maxTextHeight + translateY <= secondLineY) {
                    // 中间条目
                    canvas.clipRect(0, 0, measuredWidth, (int) (itemHeight));
                    canvas.drawText(as[j1], getTextX(as[j1], paintCenterText, tempRect), maxTextHeight, paintCenterText);
                    selectedItem = items.indexOf(as[j1]);
                } else {
                    // 其他条目
                    canvas.clipRect(0, 0, measuredWidth, (int) (itemHeight));
                    canvas.drawText(as[j1], getTextX(as[j1], paintOuterText, tempRect), maxTextHeight, paintOuterText);
                }
                canvas.restore();
            }
            j1++;
        }
    }

    // 绘制文字起始位置
    private int getTextX(String a, Paint paint, Rect rect) {
        paint.getTextBounds(a, 0, a.length(), rect);
        // 获取到的是实际文字宽度
        int textWidth = rect.width();
        // 转换成绘制文字宽度
        textWidth *= scaleX;
        return (measuredWidth - textWidth) / 2;
//        return textWidth;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        remeasure();
        setMeasuredDimension(measuredWidth, measuredHeight);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        boolean eventConsumed = gestureDetector.onTouchEvent(event);
        float itemHeight = lineSpacingMultiplier * maxTextHeight;

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                startTime = System.currentTimeMillis();
                cancelFuture();
                previousY = event.getRawY();
                break;

            case MotionEvent.ACTION_MOVE:
                float dy = previousY - event.getRawY();
                previousY = event.getRawY();

                totalScrollY = (int) (totalScrollY + dy);

                // 边界处理。
                if (!isLoop) {
                    float top = -initPosition * itemHeight;
                    float bottom = (items.size() - 1 - initPosition) * itemHeight;

                    if (totalScrollY < top) {
                        totalScrollY = (int) top;
                    } else if (totalScrollY > bottom) {
                        totalScrollY = (int) bottom;
                    }
                }
                break;

            case MotionEvent.ACTION_UP:
            default:
                if (!eventConsumed) {
                    float y = event.getY();
                    double l = Math.acos((radius - y) / radius) * radius;
                    int circlePosition = (int) ((l + itemHeight / 2) / itemHeight);

                    float extraOffset = (totalScrollY % itemHeight + itemHeight) % itemHeight;
                    mOffset = (int) ((circlePosition - itemsVisible / 2) * itemHeight - extraOffset);

                    if ((System.currentTimeMillis() - startTime) > 120) {
                        // 处理拖拽事件
                        smoothScroll(ACTION.DAGGLE);
                    } else {
                        // 处理条目点击事件
                        smoothScroll(ACTION.CLICK);
                    }
                }
                break;
        }

        invalidate();
        return true;
    }
}

这个是之前公司大牛写的，有些地方还有些不完善，希望大家遇到问题可以共同讨论一下。
现在说怎么使用吧：

xml version="1.0" encoding="utf-8"?>
xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="260dp"
    android:orientation="vertical">

            android:id="@+id/user_info_select_finish"
        android:layout_width="wrap_content"
        android:layout_height="44dp"
        android:layout_alignParentRight="true"
        android:layout_gravity="right"
        android:layout_marginRight="16dp"
        android:gravity="center"
        android:text="完成"
        android:textSize="22sp"
        android:visibility="visible" />

    style="@style/ProfileSplitLine" />

            android:id="@+id/user_info_choose_sex"
        android:layout_width="match_parent"
        android:layout_height="150dp"
        android:layout_gravity="center"
        android:visibility="visible" />

这个是popwindow的布局文件。

import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.PopupWindow;
import android.widget.TextView;

import com.yunbix.myutils.tool.choosebirthday.LoopView;
import com.yunbix.myutils.tool.choosebirthday.OnItemSelectedListener;
import com.yunbix.suyihua.R;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Administrator on 2017/4/26.
 */

public class WorkTimePopWindow extends PopupWindow {
    private View mView;
    private TextView finish;
    public static String sex;
    public static String type;
    private List sexData;
    private LoopView chooseSex;
    private Context context;
    private List worktype;
    public WorkTimePopWindow(Activity context, View.OnClickListener clickListener) {
        super(context);
        this.context = context;
        sex = "一年以内";
        type="1";
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mView = inflater.inflate(R.layout.choose_sex_diaolog, null);

        finish = (TextView) mView.findViewById(R.id.user_info_select_finish);
        chooseSex = (LoopView) mView.findViewById(R.id.user_info_choose_sex);

        initLoopView();
        // 设置按钮监听
        finish.setOnClickListener(clickListener);

        //设置PopupWindow的View
        this.setContentView(mView);
        //设置PopupWindow弹出窗体的宽
        this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
        //设置PopupWindow弹出窗体的高
        this.setHeight(context.getResources().getDimensionPixelOffset(R.dimen.user_info_dialog_height));
        //设置PopupWindow弹出窗体可点击
        this.setFocusable(true);
        //实例化一个ColorDrawable颜色为半透明
        ColorDrawable dw = new ColorDrawable(0xeef6f6f6);
//        设置SelectPicPopupWindow弹出窗体的背景
        this.setBackgroundDrawable(dw);

        this.setAnimationStyle(R.style.livePopStyle);
    }

    private void initLoopView() {
        sexData = new ArrayList();
        sexData.add("一年以内");
        sexData.add("一到三年");
        sexData.add("三年到五年");
        sexData.add("五年以上");
        worktype=new ArrayList<>();
        worktype.add("1");
        worktype.add("2");
        worktype.add("3");
        worktype.add("4");
        chooseSex.setListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(int index) {
                sex = sexData.get(index);
                type=worktype.get(index);
            }
        });
        chooseSex.setItems(sexData);
        chooseSex.setInitPosition(0);
        chooseSex.setTextSize(22);
        chooseSex.setNotLoop();
    }
}

这个是popwindow的类，使用起来也特别简单

View.OnClickListener listener = new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        edTvWorktime.setText(WorkTimePopWindow.sex);
        myPopUpWindow.dismiss();
        worktime=WorkTimePopWindow.type;
    }
};
myPopUpWindow = new WorkTimePopWindow(this, listener);
myPopUpWindow.showAtLocation(this.findViewById(R.id.user_info),
        Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);