利用WheelView實現時間選擇器DatePicker
阿新 • • 發佈：2019-02-04
先上最後效果圖：
部分程式碼如下（DatePickerDialog.java）：
package com.ywl5320.pickaddress; import java.util.ArrayList; import java.util.Calendar; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.util.DisplayMetrics; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.widget.LinearLayout; import android.widget.TextView; import com.ywl5320.pickaddress.wheel.widget.adapters.AbstractWheelTextAdapter; import com.ywl5320.pickaddress.wheel.widget.views.OnWheelChangedListener; import com.ywl5320.pickaddress.wheel.widget.views.OnWheelScrollListener; import com.ywl5320.pickaddress.wheel.widget.views.WheelView; /** * 日期選擇對話方塊 * * @author pengjian * */ public class DatePickerDialog extends BaseDialog implements android.view.View.OnClickListener { private static final int MIN_YEAR = 1970; private static final int MAX_YEAR = 2100; public static final int DIALOG_MODE_CENTER = 0; public static final int DIALOG_MODE_BOTTOM = 1; private Context context; private WheelView wvYear; private WheelView wvMonth; private WheelView wvDay; private View vDialog; private View vDialogChild; private ViewGroup VDialogPicker; private TextView tvTitle; private TextView btnSure; private TextView btnCancel; private ArrayList<String> arry_years = new ArrayList<String>(); private ArrayList<String> arry_months = new ArrayList<String>(); private ArrayList<String> arry_days = new ArrayList<String>(); private CalendarTextAdapter mYearAdapter; private CalendarTextAdapter mMonthAdapter; private CalendarTextAdapter mDaydapter; private int month; private int day; private int currentYear = getYear(); private int currentMonth = getMonth(); private int currentDay = getDay(); private int maxTextSize = 24; private int minTextSize = 18; private boolean issetdata = false; private String selectYear; private String selectMonth; private String selectDay; private String strTitle = "選擇日期"; private OnDatePickListener onDatePickListener; public DatePickerDialog(Context context) { super(context, R.layout.dialog_picker_center); this.context = context; } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); init(); } private void init() { VDialogPicker = (ViewGroup) findViewById(R.id.ly_dialog_picker); LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT, 1.0f); // 此處相當於佈局檔案中的Android:layout_gravity屬性 lp.gravity = Gravity.CENTER_VERTICAL; wvYear = new WheelView(context); wvYear.setLayoutParams(lp); VDialogPicker.addView(wvYear); wvMonth = new WheelView(context); wvMonth.setLayoutParams(lp); VDialogPicker.addView(wvMonth); wvDay = new WheelView(context); wvDay.setLayoutParams(lp); VDialogPicker.addView(wvDay); vDialog = findViewById(R.id.ly_dialog); vDialogChild = findViewById(R.id.ly_dialog_child); tvTitle = (TextView) findViewById(R.id.tv_dialog_title); btnSure = (TextView) findViewById(R.id.btn_dialog_sure); btnCancel = (TextView) findViewById(R.id.btn_dialog_cancel); tvTitle.setText(strTitle); vDialog.setOnClickListener(this); vDialogChild.setOnClickListener(this); btnSure.setOnClickListener(this); if (null != btnCancel) { btnCancel.setOnClickListener(this); } if (!issetdata) { initData(); } initYears(); mYearAdapter = new CalendarTextAdapter(context, arry_years, setYear(currentYear), maxTextSize, minTextSize); wvYear.setVisibleItems(5); wvYear.setViewAdapter(mYearAdapter); wvYear.setCurrentItem(setYear(currentYear)); initMonths(month); mMonthAdapter = new CalendarTextAdapter(context, arry_months, setMonth(currentMonth), maxTextSize, minTextSize); wvMonth.setVisibleItems(5); wvMonth.setCyclic(true); wvMonth.setViewAdapter(mMonthAdapter); wvMonth.setCurrentItem(setMonth(currentMonth)); initDays(day); mDaydapter = new CalendarTextAdapter(context, arry_days, currentDay - 1, maxTextSize, minTextSize); wvDay.setVisibleItems(5); wvDay.setCyclic(true); wvDay.setViewAdapter(mDaydapter); wvDay.setCurrentItem(currentDay - 1); wvYear.addChangingListener(new OnWheelChangedListener() { @Override public void onChanged(WheelView wheel, int oldValue, int newValue) { // TODO Auto-generated method stub String currentText = (String) mYearAdapter.getItemText(wheel .getCurrentItem()); selectYear = currentText; setTextviewSize(currentText, mYearAdapter); currentYear = Integer.parseInt(currentText); setYear(currentYear); initMonths(month); mMonthAdapter = new CalendarTextAdapter(context, arry_months, 0, maxTextSize, minTextSize); wvMonth.setVisibleItems(5); wvMonth.setViewAdapter(mMonthAdapter); wvMonth.setCurrentItem(0); } }); wvYear.addScrollingListener(new OnWheelScrollListener() { @Override public void onScrollingStarted(WheelView wheel) { // TODO Auto-generated method stub } @Override public void onScrollingFinished(WheelView wheel) { // TODO Auto-generated method stub String currentText = (String) mYearAdapter.getItemText(wheel .getCurrentItem()); setTextviewSize(currentText, mYearAdapter); } }); wvMonth.addChangingListener(new OnWheelChangedListener() { @Override public void onChanged(WheelView wheel, int oldValue, int newValue) { // TODO Auto-generated method stub String currentText = (String) mMonthAdapter.getItemText(wheel .getCurrentItem()); selectMonth = currentText; setTextviewSize(currentText, mMonthAdapter); setMonth(Integer.parseInt(currentText)); initDays(day); mDaydapter = new CalendarTextAdapter(context, arry_days, 0, maxTextSize, minTextSize); wvDay.setVisibleItems(5); wvDay.setViewAdapter(mDaydapter); wvDay.setCurrentItem(0); } }); wvMonth.addScrollingListener(new OnWheelScrollListener() { @Override public void onScrollingStarted(WheelView wheel) { // TODO Auto-generated method stub } @Override public void onScrollingFinished(WheelView wheel) { // TODO Auto-generated method stub String currentText = (String) mMonthAdapter.getItemText(wheel .getCurrentItem()); setTextviewSize(currentText, mMonthAdapter); } }); wvDay.addChangingListener(new OnWheelChangedListener() { @Override public void onChanged(WheelView wheel, int oldValue, int newValue) { // TODO Auto-generated method stub String currentText = (String) mDaydapter.getItemText(wheel .getCurrentItem()); setTextviewSize(currentText, mDaydapter); selectDay = currentText; } }); wvDay.addScrollingListener(new OnWheelScrollListener() { @Override public void onScrollingStarted(WheelView wheel) { // TODO Auto-generated method stub } @Override public void onScrollingFinished(WheelView wheel) { // TODO Auto-generated method stub String currentText = (String) mDaydapter.getItemText(wheel .getCurrentItem()); setTextviewSize(currentText, mDaydapter); } }); } public void initData() { setDate(getYear(), getMonth(), getDay()); } public void initYears() { for (int i = MIN_YEAR; i < MAX_YEAR; i++) { arry_years.add(i + ""); } } public void initMonths(int months) { arry_months.clear(); for (int i = 1; i <= months; i++) { arry_months.add(i + ""); } } public void initDays(int days) { arry_days.clear(); for (int i = 1; i <= days; i++) { arry_days.add(i + ""); } } /** * 設定dialog彈出框模式 * * @param dialogMode * @param DIALOG_MODE_CENTER * 從螢幕中間彈出 * @param DIALOG_MODE_BOTTOM * 從螢幕底部彈出 */ public void setDialogMode(int dialogMode) { if (dialogMode == DIALOG_MODE_BOTTOM) { resetContent(R.layout.dialog_picker_bottom); setAnimation(R.style.AnimationBottomDialog); setGravity(Gravity.BOTTOM); } } public void setTitle(String title) { this.strTitle = title; } @Override protected int dialogWidth() { DisplayMetrics metric = new DisplayMetrics(); ((Activity) mContext).getWindowManager().getDefaultDisplay() .getMetrics(metric); return metric.widthPixels; } public void setDatePickListener(OnDatePickListener onDatePickListener) { this.onDatePickListener = onDatePickListener; } @Override public void onClick(View v) { if (v == btnSure) { if (onDatePickListener != null) { onDatePickListener.onClick(selectYear, selectMonth, selectDay); } } else if (v == btnCancel) { } else if (v == vDialogChild) { return; } else { dismiss(); } dismiss(); } public interface OnDatePickListener { public void onClick(String year, String month, String day); } /** * 設定字型大小 * * @param curriteItemText * @param adapter */ public void setTextviewSize(String curriteItemText, CalendarTextAdapter adapter) { ArrayList<View> arrayList = adapter.getTestViews(); int size = arrayList.size(); String currentText; for (int i = 0; i < size; i++) { TextView textvew = (TextView) arrayList.get(i); currentText = textvew.getText().toString(); if (curriteItemText.equals(currentText)) { textvew.setTextSize(maxTextSize); } else { textvew.setTextSize(minTextSize); } } } public int getYear() { Calendar c = Calendar.getInstance(); return c.get(Calendar.YEAR); } public int getMonth() { Calendar c = Calendar.getInstance(); return c.get(Calendar.MONTH) + 1; } public int getDay() { Calendar c = Calendar.getInstance(); return c.get(Calendar.DATE); } /** * 設定年月日 * * @param year * @param month * @param day */ public void setDate(int year, int month, int day) { selectYear = year + ""; selectMonth = month + ""; selectDay = day + ""; issetdata = true; this.currentYear = year; this.currentMonth = month; this.currentDay = day; this.month = 12; calDays(year, month); } /** * 設定年份 * * @param year */ private int setYear(int year) { int yearIndex = 0; for (int i = MIN_YEAR; i < MAX_YEAR; i++) { if (i == year) { return yearIndex; } yearIndex++; } return yearIndex; } /** * 設定月份 * * @param year * @param month * @return */ private int setMonth(int month) { int monthIndex = 0; calDays(currentYear, month); for (int i = 1; i < this.month; i++) { if (month == i) { return monthIndex; } else { monthIndex++; } } return monthIndex; } /** * 計算每月多少天 * * @param month * @param leayyear */ public void calDays(int year, int month) { boolean leayyear = false; if (year % 4 == 0 && year % 100 != 0) { leayyear = true; } else { leayyear = false; } for (int i = 1; i <= 12; i++) { switch (month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: this.day = 31; break; case 2: if (leayyear) { this.day = 29; } else { this.day = 28; } break; case 4: case 6: case 9: case 11: this.day = 30; break; } } if (year == getYear() && month == getMonth()) { this.day = getDay(); } } private class CalendarTextAdapter extends AbstractWheelTextAdapter { ArrayList<String> list; protected CalendarTextAdapter(Context context, ArrayList<String> list, int currentItem, int maxsize, int minsize) { super(context, R.layout.item_birth_year, NO_RESOURCE, currentItem, maxsize, minsize); this.list = list; setItemTextResource(R.id.tempValue); } @Override public View getItem(int index, View cachedView, ViewGroup parent) { View view = super.getItem(index, cachedView, parent); return view; } @Override public int getItemsCount() { return list.size(); } @Override protected CharSequence getItemText(int index) { return list.get(index) + ""; } } }