自定义MonthPicker

MonthPicker类
public class CalendarView extends LinearLayout implements View.OnClickListener {

    private Context context;
    private LinearLayout headView;
    public GridView bodyView;
    private List<Year> years;//所有要显示的年份
    private Year thisYear;//今年
    private MonthAdapter monthAdapter;
    private TextView textBack, textNext, textYear;
    private int yearPosition, monthPosition, currentYear, currentMonth;
    private boolean flagFirst;
    private Dialog dialog;
    private int startYear, startMonthPosition, endYear, endMonthPosition;
    private TextView showText;

    public CalendarView(Context context, String startDate, String endDate) {
        super(context);
        String[] startD = startDate.split("/");
        String[] endD = endDate.split("/");
        this.startYear = Integer.parseInt(startD[2]);
        this.endYear = Integer.parseInt(endD[2]);
        for (int i = 0; i < Year.monthNames.length; i++) {
            if (Year.monthNames[i].equals(startD[1])) {
                this.startMonthPosition = i;
            }
            if (Year.monthNames[i].equals(endD[1])) {
                this.endMonthPosition = i;
            }
        }

        init(context);
    }

    public CalendarView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public void setStartYear(int startYear) {
        this.startYear = startYear;
    }

    public void setStartMonthPosition(int startMonthPosition) {
        this.startMonthPosition = startMonthPosition;
    }

    public void setEndYear(int endYear) {
        this.endYear = endYear;
    }

    public void setEndMonthPosition(int endMonthPosition) {
        this.endMonthPosition = endMonthPosition;
    }

    public void setShowText(TextView tv) {
        this.showText = tv;
    }

    public void init(Context context) {

        this.context = context;
        this.setOrientation(VERTICAL);
        this.setGravity(Gravity.CENTER);
        flagFirst = true;
        LayoutInflater inflater = LayoutInflater.from(context);
        LinearLayout view = new LinearLayout(context);
        view = (LinearLayout) inflater.inflate(R.layout.layout_calendar, view, false);
        this.addView(view);
        this.setLayoutParams(view.getLayoutParams());

        headView = (LinearLayout) view.findViewById(R.id.head_year);
        bodyView = (GridView) view.findViewById(R.id.grid_month);

        textBack = (TextView) headView.findViewById(R.id.text_back);
        textBack.setText("<    ");
        textBack.setOnClickListener(this);
        textNext = (TextView) headView.findViewById(R.id.text_next);
        textNext.setText("    >");
        textNext.setOnClickListener(this);
        textYear = (TextView) headView.findViewById(R.id.text_year);

        years = new ArrayList<Year>();
        for (int year = startYear; year <= endYear; year++) {
            Year y = new Year(String.valueOf(year));
            if (year == startYear) {
                y = new Year(startMonthPosition, String.valueOf(year));
            }
            if (year == endYear) {
                y = new Year(String.valueOf(year), endMonthPosition);
            }

            years.add(y);
        }

        Calendar calendar = Calendar.getInstance();
        currentMonth = calendar.get(Calendar.MONTH);
        monthPosition = currentMonth;
        Year cYear = new Year(String.valueOf(calendar.get(Calendar.YEAR)));
        for (Year y : years) {
            if (y.getName().equals(cYear.getName())) {
                yearPosition = years.indexOf(y);
            }
        }

        currentYear = yearPosition;
        if (yearPosition == 0) {
            textBack.setVisibility(INVISIBLE);
        }

        if (yearPosition == years.size() - 1) {
            textNext.setVisibility(INVISIBLE);
        }

        thisYear = years.get(yearPosition);
        textYear.setText(thisYear.getName());
        monthAdapter = new MonthAdapter(thisYear.getMonths(), context);
        monthAdapter.setmGridView(bodyView);
        bodyView.setAdapter(monthAdapter);

    }

    public void show() {
        dialog = new Dialog(context, R.style.MonthPickerDialog);
        dialog.setContentView(this);
        dialog.show();
    }

    //测试数据，需要外部提供实际数据
    public void test() {


        Year year = new Year("2010", 5, 12);
        years.add(year);
        years.add(new Year("2011"));
        years.add(new Year("2012"));
        years.add(new Year("2013"));
        years.add(new Year("2014"));
        years.add(new Year("2015"));

        Calendar calendar = Calendar.getInstance();
        currentMonth = calendar.get(Calendar.MONTH);
        monthPosition = currentMonth;
        Year cYear = new Year(String.valueOf(calendar.get(Calendar.YEAR)));
        years.add(cYear);

        yearPosition = years.indexOf(cYear);
        currentYear = yearPosition;
        thisYear = years.get(yearPosition);
        textYear.setText(thisYear.getName());
        monthAdapter = new MonthAdapter(thisYear.getMonths(), context);
        monthAdapter.setmGridView(bodyView);
        bodyView.setAdapter(monthAdapter);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.text_back:
                textNext.setVisibility(View.VISIBLE);
                if (yearPosition > 0) {
                    yearPosition--;
                    thisYear = years.get(yearPosition);
                    textYear.setText(thisYear.getName());
                    monthAdapter.setMonths(thisYear.getMonths());
                    monthAdapter.notifyDataSetChanged();
                    if (yearPosition == 0) {
                        textBack.setVisibility(View.INVISIBLE);
                    }
                }
                break;
            case R.id.text_next:
                textBack.setVisibility(View.VISIBLE);
                if (yearPosition < years.size() - 1) {
                    yearPosition++;
                    textNext.setVisibility(View.VISIBLE);
                    thisYear = years.get(yearPosition);
                    textYear.setText(thisYear.getName());
                    monthAdapter.setMonths(thisYear.getMonths());
                    monthAdapter.notifyDataSetChanged();
                    if (yearPosition == years.size() - 1) {
                        textNext.setVisibility(View.INVISIBLE);
                    }
                }
                break;
            default:
                break;
        }
    }

    /*
    /月份适配器
     */

    public class MonthAdapter extends BaseAdapter implements View.OnClickListener {

        private List<Month> months;
        private Context context;
        private LayoutInflater inflater;
        private GridView mGridView;

        public MonthAdapter(List<Month> months, Context context) {
            this.months = months;
            this.context = context;
            inflater = LayoutInflater.from(context);
        }

        public void setMonths(List<Month> months) {
            this.months = months;
        }

        public void setmGridView(GridView mGridView) {
            this.mGridView = mGridView;
        }

        @Override
        public int getCount() {
            return months == null ? 0 : months.size();
        }

        @Override
        public Object getItem(int position) {
            return months == null ? null : months.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            View view = convertView == null ? inflater.inflate(R.layout.item_month, parent, false) : convertView;
            ViewHolder holder = (ViewHolder) view.getTag();
            if (holder == null) {
                holder = new ViewHolder();
                holder.textMonth = (TextView) view.findViewById(R.id.text_month);
            }

            Month month = months.get(position);
            holder.textMonth.setText(month.getName());
            if (month.isEffect()) {
                holder.textMonth.setClickable(true);
                holder.textMonth.setOnClickListener(this);
                holder.textMonth.setTextColor(context.getResources().getColor(R.color.carlendar_text_black));
                if (flagFirst && currentYear == yearPosition && currentMonth == position) {
                    holder.textMonth.setBackground(context.getResources().getDrawable(R.drawable.color_car_selected));
                    holder.textMonth.setTag(true);
                    holder.textMonth.setTextColor(context.getResources().getColor(R.color.carlendar_text_press));
                    flagFirst = false;
                }
                if (holder.textMonth.getTag() != null) {
                    holder.textMonth.setTextColor(context.getResources().getColor(R.color.carlendar_text_press));
                    holder.textMonth.setBackground(context.getResources().getDrawable(R.drawable.color_car_selected));
                }
            } else {
                holder.textMonth.setTextColor(context.getResources().getColor(R.color.carlendar_text_gray));
                holder.textMonth.setBackground(context.getResources().getDrawable(R.drawable.color_car_back));
                holder.textMonth.setClickable(false);
            }

            return view;
        }

        @Override
        public void onClick(View v) {
            int count = mGridView.getChildCount() - 1;
            while (count >= 0) {
                TextView textView = (TextView) mGridView.getChildAt(count).findViewById(R.id.text_month);
                textView.setBackground(context.getResources().getDrawable(R.drawable.color_car_back));
                textView.setTag(null);
                if (months.get(count).isEffect()) {
                    if (textView == v) {
                        monthPosition = count;
                    }
                    textView.setTextColor(context.getResources().getColor(R.color.carlendar_text_black));
                } else {
                    textView.setTextColor(context.getResources().getColor(R.color.carlendar_text_gray));
                }
                count--;
            }

            v.setBackground(context.getResources().getDrawable(R.drawable.color_car_selected));
            v.setTag(true);
            ((TextView) v).setTextColor(context.getResources().getColor(R.color.carlendar_text_press));

            Month month = thisYear.getMonths().get(monthPosition);
            if (month.isEffect()) {
                showText.setText(month.getName() + " " + thisYear.getName());
                dialog.dismiss();
            }
        }

        public class ViewHolder {
            TextView textMonth;
        }
    }

    /*
    /实体类：年
     */
    public static class Year {
        private List<Month> months;
        private int past, feature;
        private String name;
        public static String[] monthNames = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

        public Year(String name) {
            this(name, -1, Integer.MAX_VALUE);
        }

        public Year(int past, String name) {
            this(name, past, Integer.MAX_VALUE);
        }

        public Year(String name, int feature) {
            this(name, -1, feature);
        }

        public Year(String name, int past, int feature) {
            this.name = name;
            months = new ArrayList<Month>();
            for (int i = 0; i < 12; i++) {
                Month month = new Month(monthNames[i]);
                if (i < past || i > feature) {
                    month.setIsEffect(false);
                }
                months.add(month);
            }
        }

        public List<Month> getMonths() {
            return months;
        }

        public void setMonths(List<Month> months) {
            this.months = months;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public int getPast() {
            return past;
        }

        public void setPast(int past) {
            this.past = past;
        }

        public int getFeature() {
            return feature;
        }

        public void setFeature(int feature) {
            this.feature = feature;
        }
    }

    /*
    /实体类：月
     */
    public static class Month {
        private String name;
        private boolean isEffect;

        public Month(String name) {
            this.name = name;
            isEffect = true;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public boolean isEffect() {
            return isEffect;
        }

        public void setIsEffect(boolean isEffect) {
            this.isEffect = isEffect;
        }
    }
}

MonthPicker布局:layout_calendar

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              android:layout_width="300dp"
              android:layout_height="245dp"
              android:background="#ffffff"
              android:gravity="center"
              android:orientation="vertical"
              android:paddingBottom="50dp"
              android:paddingLeft="15dp"
              android:paddingRight="15dp"
              android:paddingTop="13dp"
              tools:context=".MainActivity"
    >

    <LinearLayout
        android:id="@+id/head_year"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:background="#ffffff"
        android:gravity="center"
        android:orientation="horizontal"
        >

        <TextView
            android:id="@+id/text_back"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="25dp"
            android:gravity="left"
            android:text="back"
            android:textSize="32dp"
            />

        <TextView
            android:id="@+id/text_year"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="15dp"
            android:layout_marginRight="15dp"
            android:gravity="center"
            android:text="2015"
            android:textSize="32dp"
            />

        <TextView
            android:id="@+id/text_next"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="right"
            android:text="next"
            android:textSize="32dp"
            />
    </LinearLayout>

    <GridView
        android:id="@+id/grid_month"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="17dp"
        android:background="#ffffff"
        android:gravity="center"
        android:horizontalSpacing="13dp"
        android:numColumns="4"
        android:verticalSpacing="10dp"
        ></GridView>
</LinearLayout>
 

MonthPicker中Month的布局：item_month
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:gravity="center"
              android:orientation="vertical"
              tools:context=".MainActivity"
    >

    <TextView
        android:id="@+id/text_month"
        android:layout_width="75dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:background="#ffffff"
        android:foregroundGravity="center"
        android:gravity="center"
        android:textColor="#333333"
        android:textSize="25sp"
        />
</LinearLayout>

Dialog的style
<style name="MonthPickerDialog" parent="android:style/Theme.Dialog">
    <item name="android:windowBackground">@color/carlendar_text_press</item>
    <item name="android:windowNoTitle">true</item>
</style>
Color
<resources>
    <color name="carlendar_text_black">#333333</color>
    <color name="carlendar_text_gray">#999999</color>
    <color name="carlendar_text_press">#ffffff</color>
    <color name="carlendar_back_press">#ffef8350</color>
</resources>

Drawable
1 color_car_back
<color xmlns:android="http://schemas.android.com/apk/res/android" android:color="@color/carlendar_text_press">
</color>

2 color_car_selected
<color xmlns:android="http://schemas.android.com/apk/res/android" android:color="@color/carlendar_back_press">
</color>