Android 自定義DatePickerDialog

Android 自定義DatePickerDialog解決低版本手機以及部分Android系統個性化日期輸入控件后導致的bug.

程序開發中，碰到一些手機顯示日期輸入對話框框顯示不一致的問題，有些還會導致異常退出，故此自定義了日期輸入框的樣式解決問題。

 

 

package packageName.widget;

import java.util.Calendar;

import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.DatePicker;
import android.widget.DatePicker.OnDateChangedListener;

import packageName.R;

/**
 * @author homlee
 *
 */
public class MyDatePickerDialog extends AlertDialog implements OnClickListener,
        OnDateChangedListener {

    private static final String YEAR = "year";
    private static final String MONTH = "month";
    private static final String DAY = "day";

    private final DatePicker mDatePicker;
    private final DatePickerDialog.OnDateSetListener mCallBack;
    private final Calendar mCalendar;

    private boolean mTitleNeedsUpdate = true;
    private Context mContext;


    /**
     * @param context
     *            The context the dialog is to run in.
     * @param callBack
     *            How the parent is notified that the date is set.
     * @param year
     *            The initial year of the dialog.
     * @param monthOfYear
     *            The initial month of the dialog.
     * @param dayOfMonth
     *            The initial day of the dialog.
     */
    public MyDatePickerDialog(Context context, DatePickerDialog.OnDateSetListener callBack,
            int year, int monthOfYear, int dayOfMonth) {
        this(context, 0, callBack, year, monthOfYear, dayOfMonth);
        this.mContext = context;
    }

    /**
     * @param context
     *            The context the dialog is to run in.
     * @param theme
     *            the theme to apply to this dialog
     * @param callBack
     *            How the parent is notified that the date is set.
     * @param year
     *            The initial year of the dialog.
     * @param monthOfYear
     *            The initial month of the dialog.
     * @param dayOfMonth
     *            The initial day of the dialog.
     */
    public MyDatePickerDialog(Context context, int theme,
            DatePickerDialog.OnDateSetListener callBack, int year, int monthOfYear,
            int dayOfMonth) {
        super(context, theme);
        
        this.mContext = context;
        
        mCallBack = callBack;

        mCalendar = Calendar.getInstance();

        Context themeContext = getContext();
        setButton(BUTTON_POSITIVE,
                themeContext.getText(R.string.OK), this);
        setIcon(0);

        LayoutInflater inflater = (LayoutInflater) themeContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = inflater.inflate(R.layout.date_picker_dialog, null);
        setView(view);
        mDatePicker = (DatePicker) view.findViewById(R.id.datePicker);
        mDatePicker.init(year, monthOfYear, dayOfMonth, this);
        updateTitle(year, monthOfYear, dayOfMonth);
    }

    public void onClick(DialogInterface dialog, int which) {
        tryNotifyDateSet();
    }

    public void onDateChanged(DatePicker view, int year, int month, int day) {
        mDatePicker.init(year, month, day, this);
        updateTitle(year, month, day);
    }

    /**
     * Gets the {@link DatePicker} contained in this dialog.
     * 
     * @return The calendar view.
     */
    public DatePicker getDatePicker() {
        return mDatePicker;
    }

    /**
     * Sets the current date.
     * 
     * @param year
     *            The date year.
     * @param monthOfYear
     *            The date month.
     * @param dayOfMonth
     *            The date day of month.
     */
    public void updateDate(int year, int monthOfYear, int dayOfMonth) {
        mDatePicker.updateDate(year, monthOfYear, dayOfMonth);
    }

    private void tryNotifyDateSet() {
        if (mCallBack != null) {
            mDatePicker.clearFocus();
            mCallBack.onDateSet(mDatePicker, mDatePicker.getYear(),
                    mDatePicker.getMonth(), mDatePicker.getDayOfMonth());
        }
    }

    @Override
    protected void onStop() {
        tryNotifyDateSet();
        super.onStop();
    }

    @SuppressLint("NewApi")
    private void updateTitle(int year, int month, int day) {
        if (!mDatePicker.getCalendarViewShown()) {
            mCalendar.set(Calendar.YEAR, year);
            mCalendar.set(Calendar.MONTH, month);
            mCalendar.set(Calendar.DAY_OF_MONTH, day);
            String title = DateUtils.formatDateTime(mContext,
                    mCalendar.getTimeInMillis(), DateUtils.FORMAT_SHOW_DATE
                            | DateUtils.FORMAT_SHOW_WEEKDAY
                            | DateUtils.FORMAT_SHOW_YEAR
                            | DateUtils.FORMAT_ABBREV_MONTH
                            | DateUtils.FORMAT_ABBREV_WEEKDAY);
            setTitle(title);
            mTitleNeedsUpdate = true;
        } else {
            if (mTitleNeedsUpdate) {
                mTitleNeedsUpdate = false;
                setTitle(R.string.Date);
            }
        }
    }

    @Override
    public Bundle onSaveInstanceState() {
        Bundle state = super.onSaveInstanceState();
        state.putInt(YEAR, mDatePicker.getYear());
        state.putInt(MONTH, mDatePicker.getMonth());
        state.putInt(DAY, mDatePicker.getDayOfMonth());
        return state;
    }

    @Override
    public void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        int year = savedInstanceState.getInt(YEAR);
        int month = savedInstanceState.getInt(MONTH);
        int day = savedInstanceState.getInt(DAY);
        mDatePicker.init(year, month, day, this);
    }
}

 

如果需要自定義樣式，可以自己設定style.xml 和layout.xml就可以