[getAdapter]获取可用的Adapter

app/build.gradle

@@ -1,12 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 24
-    buildToolsVersion "24.0.3"
+    compileSdkVersion 27
     defaultConfig {
         applicationId "you.xiaochen.wheel"
         minSdkVersion 14
-        targetSdkVersion 22
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -20,11 +19,11 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:24.2.0'
-    compile 'com.android.support:recyclerview-v7:24.2.0'
-    testCompile 'junit:junit:4.12'
+    implementation 'com.android.support:appcompat-v7:27.1.0'
+    implementation 'com.android.support:recyclerview-v7:27.1.0'
+    testImplementation 'junit:junit:4.12'
 }

app/src/main/java/you/xiaochen/wheel/MainActivity.java

@@ -2,24 +2,28 @@
 
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
+import android.view.View;
 import android.widget.TextView;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Calendar;
 import java.util.List;
 
+import you.xiaochen.wheel.widget.DatePickerDialog;
 import you.xiaochen.wheel.widget.WheelView;
 
 public class MainActivity extends AppCompatActivity {
     private WheelView wv_city, wv_county, wv_name;
+    private WheelView wv_number;
 
     private CityAdapter cityAdapter;
     private CountyAdapter countyAdapter;
 
-    private TextView tv_city, tv_county, tv_number;
+    private TextView tv_city, tv_county, tv_number, tvDatePicker;
 
+    private DatePickerDialog dialog;
 
-    private WheelView wv_number;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -34,13 +38,15 @@ protected void onCreate(Bundle savedInstanceState) {
         tv_county = (TextView) findViewById(R.id.tv_county);
         tv_number = (TextView) findViewById(R.id.tv_number);
 
+        tvDatePicker = (TextView) findViewById(R.id.datePicker);
+
         /* 市滑轮控件 */
 
         cityAdapter = new CityAdapter();
         wv_city.setAdapter(cityAdapter);
         wv_city.setOnItemSelectedListener(new WheelView.OnItemSelectedListener() {
             @Override
-            public void onItemSelected(int index) {
+            public void onItemSelected(WheelView wheelView, int index) {
                 tv_city.setText("市: "+cityAdapter.getItem(index));
                 List<String> strs = Arrays.asList(TestDatas.AREAS[index]);
                 countyAdapter.strs.clear();
@@ -54,10 +60,9 @@ public void onItemSelected(int index) {
 
 
         /* 区滑轮控件 */
-
         wv_county.setOnItemSelectedListener(new WheelView.OnItemSelectedListener() {
             @Override
-            public void onItemSelected(int index) {
+            public void onItemSelected(WheelView wheelView, int index) {
                 tv_county.setText("县: "+countyAdapter.getItem(index));
             }
         });
@@ -92,16 +97,35 @@ protected String getItem(int index) {
         });
         wv_number.setOnItemSelectedListener(new WheelView.OnItemSelectedListener() {
             @Override
-            public void onItemSelected(int index) {
+            public void onItemSelected(WheelView wheelView, int index) {
                 tv_number.setText("水平布局"+index);
             }
         });
         wv_number.setCurrentItem(88);
 
+
+        dialog = new DatePickerDialog(this);
+        dialog.setDate(Calendar.getInstance(), false);
+        dialog.setOnDateSelectedListener(new DatePickerDialog.OnDateSelectedListener() {
+            @Override
+            public void onDateSelected(int year, int month, int dayOfMonth) {
+                tvDatePicker.setText(String.format("%s年%s月%s日", year, month + 1, dayOfMonth));
+            }
+        });
+
         //Activity2.lanuch(this);
     }
 
-    private class CityAdapter extends WheelView.WheelAdapter {
+    public void viewClick(View view) {
+        String tag = (String) view.getTag();
+        if ("WheelRecyclerView".equals(tag)) {
+            Activity2.lanuch(this);
+        } else {
+            dialog.show();
+        }
+    }
+
+    private static class CityAdapter extends WheelView.WheelAdapter {
         @Override
         protected int getItemCount() {
             return TestDatas.NAMES.length;
@@ -113,7 +137,7 @@ protected String getItem(int index) {
         }
     }
 
-    private class CountyAdapter extends WheelView.WheelAdapter {
+    private static class CountyAdapter extends WheelView.WheelAdapter {
         private List<String> strs;
 
         CountyAdapter() {
@@ -131,5 +155,4 @@ protected String getItem(int index) {
         }
     }
 
-
 }

app/src/main/java/you/xiaochen/wheel/widget/DatePickerDialog.java

@@ -0,0 +1,212 @@
+package you.xiaochen.wheel.widget;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.view.Gravity;
+import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
+
+
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.List;
+
+import you.xiaochen.wheel.R;
+
+public class DatePickerDialog extends Dialog implements View.OnClickListener, WheelView.OnItemSelectedListener {
+
+    WheelView yearWheelView;
+    WheelView monthWheelView;
+    WheelView dayWheelView;
+    View doneView;
+
+    WheelView.SimpleAdapter yearAdapter = new WheelView.SimpleAdapter();
+    WheelView.SimpleAdapter monthAdapter = new WheelView.SimpleAdapter();
+    WheelView.SimpleAdapter dayAdapter = new WheelView.SimpleAdapter();
+
+    List<Integer> years = new ArrayList<>();
+
+    Calendar selectedCalendar;
+
+    int selectedYearIndex, selectedMonthIndex, selectedDayIndex;
+
+    OnDateSelectedListener listener;
+
+    int initYear, initMonth, initDay;
+
+    boolean mOnlyHistory;
+
+    public DatePickerDialog(@NonNull Context context) {
+        this(context, R.style.disFloatingDialog);
+    }
+
+    public DatePickerDialog(@NonNull Context context, int themeResId) {
+        super(context, themeResId);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        WindowManager.LayoutParams attr = getWindow().getAttributes();
+        attr.height = WindowManager.LayoutParams.WRAP_CONTENT;
+        attr.gravity = Gravity.BOTTOM;
+//        attr.windowAnimations = R.style.bottomWindowAnim;
+
+        //setCanceledOnTouchOutside(true);
+
+        setContentView(R.layout.dialog_date_picker);
+        View root = getWindow().findViewById(Window.ID_ANDROID_CONTENT);
+        if (root != null) {
+            yearWheelView = root.findViewWithTag("yearWheel");
+            monthWheelView = root.findViewWithTag("monthWheel");
+            dayWheelView = root.findViewWithTag("dayWheel");
+            doneView = root.findViewWithTag("done");
+            doneView.setOnClickListener(this);
+        }
+    }
+
+    public void setOnDateSelectedListener(OnDateSelectedListener l) {
+        listener = l;
+    }
+
+    public void setDate(Calendar calendar) {
+        setDate(calendar, true);
+    }
+
+    public void setDate(Calendar calendar, boolean onlyHistory) {
+        mOnlyHistory = onlyHistory;
+        if (calendar == null) {
+            calendar = Calendar.getInstance();
+        }
+        selectedCalendar = calendar;
+        int year, month, x;
+        year = calendar.get(Calendar.YEAR);
+        initMonth = selectedMonthIndex = calendar.get(Calendar.MONTH);
+        month = calendar.get(Calendar.DAY_OF_MONTH);
+        initDay = selectedDayIndex =  month - 1;
+        for (int i = 10; i > 0; i--) {
+            x = year - i;
+            years.add(x);
+            yearAdapter.add(String.format("%s年", x));
+        }
+        years.add(year);
+        yearAdapter.add(String.format("%s年", year));
+        initYear = selectedYearIndex = years.size() - 1;
+        if (!onlyHistory) {
+            for (int i = 1; i < 11; i++) {
+                x = year + i;
+                years.add(x);
+                yearAdapter.add(String.format("%s年", x));
+            }
+        }
+        updateMonths();
+        updateDays();
+    }
+
+    private void updateMonths() {
+        selectedCalendar.set(Calendar.YEAR, years.get(selectedYearIndex));
+        int months = selectedCalendar.getActualMaximum(Calendar.MONTH) + 1;
+        int x;
+        monthAdapter.clear();
+        for (int i = 0; i < months; i++) {
+            if (mOnlyHistory && selectedYearIndex == initYear) {
+                if (i > initMonth) continue;
+                x = i + 1;
+                monthAdapter.add(String.format("%s月", x));
+            } else {
+                x = i + 1;
+                monthAdapter.add(String.format("%s月", x));
+            }
+        }
+        monthAdapter.notifyDataSetChanged();
+        if (monthWheelView != null) {
+            if (selectedMonthIndex >= monthAdapter.size()) {
+                selectedMonthIndex = monthAdapter.size() - 1;
+            }
+            monthWheelView.setCurrentItem(selectedMonthIndex);
+        }
+    }
+
+    private void updateDays() {
+        selectedCalendar.set(Calendar.YEAR, years.get(selectedYearIndex));
+        selectedCalendar.set(Calendar.MONTH, selectedMonthIndex);
+        int daysOfMonth = selectedCalendar.getActualMaximum(Calendar.DAY_OF_MONTH);
+        int x;
+        dayAdapter.clear();
+        for (int i = 0; i < daysOfMonth; i++) {
+            if (mOnlyHistory && selectedYearIndex == initYear
+                    && selectedMonthIndex == initMonth) {
+                if (i > initDay) continue;
+                x = i + 1;
+                dayAdapter.add(String.format("%s日", x));
+            } else {
+                x = i + 1;
+                dayAdapter.add(String.format("%s日", x));
+            }
+        }
+        dayAdapter.notifyDataSetChanged();
+        if (dayWheelView != null) {
+            if (selectedDayIndex >= dayAdapter.size()) {
+                selectedDayIndex = dayAdapter.size() - 1;
+            }
+            dayWheelView.setCurrentItem(selectedDayIndex);
+        }
+    }
+
+    @Override
+    public void onItemSelected(WheelView wheelView, int index) {
+        String tag = wheelView.getTag().toString();
+        switch (tag) {
+            case "yearWheel":
+                selectedYearIndex = index;
+                updateMonths();
+                updateDays();
+                break;
+            case "monthWheel":
+                selectedMonthIndex = index;
+                updateDays();
+                break;
+            case "dayWheel":
+                selectedDayIndex = index;
+        }
+    }
+
+    @Override
+    public void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        yearWheelView.setOnItemSelectedListener(this);
+        yearWheelView.setAdapter(yearAdapter);
+        yearWheelView.setCurrentItem(selectedYearIndex);
+        monthWheelView.setOnItemSelectedListener(this);
+        monthWheelView.setAdapter(monthAdapter);
+        monthWheelView.setCurrentItem(selectedMonthIndex);
+        dayWheelView.setOnItemSelectedListener(this);
+        dayWheelView.setAdapter(dayAdapter);
+        dayWheelView.setCurrentItem(selectedDayIndex);
+    }
+
+    @Override
+    public void show() {
+        super.show();
+    }
+
+    @Override
+    public void dismiss() {
+        super.dismiss();
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (listener != null) {
+            listener.onDateSelected(years.get(selectedYearIndex), selectedMonthIndex, selectedDayIndex + 1);
+        }
+        dismiss();
+    }
+
+    public interface OnDateSelectedListener {
+        void onDateSelected(int year, int month, int dayOfMonth);
+    }
+}