Android 日期和时间选择控件的开发

Android 日期和时间选择控件的开发

一个日期和时间选择控件的例子。来自谷歌开发文档，整合了两个小例子。

import java.util.Calendar;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.TimePicker;

public class DatePickerActivity extends Activity {
	private TextView mDateDisplay;
	private Button mPickDate;
	private TextView mTimeDisplay;
	private Button mPickTime;
	private int mYear;
	private int mMonth;
	private int mDay;
	private int mHour;
	private int mMinute;

	static final int DATE_DIALOG_ID = 0;
	static final int TIME_DIALOG_ID = 1;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		// capture our View elements
		mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
		mPickDate = (Button) findViewById(R.id.pickDate);
		mTimeDisplay = (TextView) findViewById(R.id.timeDisplay);
		mPickTime = (Button) findViewById(R.id.pickTime);

		// add a click listener to the button
		mPickDate.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				showDialog(DATE_DIALOG_ID);
			}
		});
		mPickTime.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				showDialog(TIME_DIALOG_ID);
			}
		});

		// get the current date
		final Calendar c = Calendar.getInstance();
		mYear = c.get(Calendar.YEAR);
		mMonth = c.get(Calendar.MONTH);
		mDay = c.get(Calendar.DAY_OF_MONTH);
		// get the current time
		final Calendar cc = Calendar.getInstance();
		mHour = cc.get(Calendar.HOUR_OF_DAY);
		mMinute = cc.get(Calendar.MINUTE);

		// display the current date (this method is below)
		updateDisplay();

	}

	// updates the date in the TextView
	private void updateDisplay() {
		mDateDisplay.setText(new StringBuilder()
				// Month is 0 based so add 1
				.append(mMonth + 1).append("-").append(mDay).append("-")
				.append(mYear).append(" "));
		mTimeDisplay.setText(new StringBuilder().append(pad(mHour)).append(":")
				.append(pad(mMinute)));

	}

	private static String pad(int c) {
		if (c >= 10)
			return String.valueOf(c);
		else
			return "0" + String.valueOf(c);
	}

	// the callback received when the user "sets" the date in the dialog
	private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {

		public void onDateSet(DatePicker view, int year, int monthOfYear,
				int dayOfMonth) {
			mYear = year;
			mMonth = monthOfYear;
			mDay = dayOfMonth;
			updateDisplay();
		}
	};
	// the callback received when the user "sets" the time in the dialog
	private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
		public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
			mHour = hourOfDay;
			mMinute = minute;
			updateDisplay();
		}
	};

	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case DATE_DIALOG_ID:
			return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
					mDay);
		case TIME_DIALOG_ID:
			return new TimePickerDialog(this, mTimeSetListener, mHour, mMinute,
					false);

		}
		return null;
	}
}

 

评论

1 楼 蓝月儿 2012-09-06  

有没有效果图呢 学习 学习