MainActivity.class
public class MainActivity extends FragmentActivity
{
Button btn_date;
private int pYear;
private int pMonth;
private int pDay;
static final int DATE_DIALOG_ID = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Calendar c = Calendar.getInstance();
pYear = c.get(Calendar.YEAR);
pMonth = c.get(Calendar.MONTH);
pDay = c.get(Calendar.DAY_OF_MONTH);
btn_date = (Button) findViewById(R.id.btn_date);
btn_date.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this,
pDateSetListener,
pYear, pMonth, pDay);
}
return null;
}
private DatePickerDialog.OnDateSetListener pDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
pYear = year;
pMonth = monthOfYear;
pDay = dayOfMonth;
updateDisplay();
}
};
/**
* Updates the date in the Button
*/
private void updateDisplay() {
btn_date.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(pMonth + 1).append("/")
.append(pDay).append("/")
.append(pYear).append(" "));
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="140dp"
android:layout_height="50dp"
android:text="Current Date"
android:id="@+id/btn_date"
android:background="#fff"
android:layout_marginTop="60dp"
/>
</RelativeLayout>
