Android中的日期选择器

package com.example.yangjian.learncomponents;

import android.app.DatePickerDialog;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;

public class chooseADate extends ActionBarActivity {

private Button btnChooseDate;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_choose_adate);

btnChooseDate = (Button) findViewById(R.id.btnChooseDate);

btnChooseDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new DatePickerDialog(chooseADate.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

String thedate = String.format("%d-%d-%d", monthOfYear+1, dayOfMonth);
System.out.println(thedate);
btnChooseDate.setText(thedate);
}
},2015,8,3).show();
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_choose_adate, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}

第二步：在xml文件中的代码：

<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:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"android:paddingBottom="@dimen/activity_vertical_margin"android:orientation="vertical"tools:context="com.example.yangjian.learncomponents.chooseADate"><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="0000-00-00"android:id="@+id/btnChooseDate"/></LinearLayout>