Gọi hộp thoại chọn thời gian trong DatePicker
phương thức cập nhật. Nó sẽ không được gọi cùng lúc nhưng khi bạn nhấn DatePicker
nút set. Hộp thoại chọn thời gian sẽ mở ra. Phương pháp được đưa ra dưới đây.
package com.android.date;
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 datepicker extends Activity {
private TextView mDateDisplay;
private Button mPickDate;
private int mYear;
private int mMonth;
private int mDay;
private TextView mTimeDisplay;
private Button mPickTime;
private int mhour;
private int mminute;
static final int TIME_DIALOG_ID = 1;
static final int DATE_DIALOG_ID = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDateDisplay =(TextView)findViewById(R.id.date);
mPickDate =(Button)findViewById(R.id.datepicker);
mTimeDisplay = (TextView) findViewById(R.id.time);
mPickTime = (Button) findViewById(R.id.timepicker);
//Pick time's click event listener
mPickTime.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
showDialog(TIME_DIALOG_ID);
}
});
//PickDate's click event listener
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
mhour = c.get(Calendar.HOUR_OF_DAY);
mminute = c.get(Calendar.MINUTE);
}
//-------------------------------------------update date---//
private void updateDate() {
mDateDisplay.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mDay).append("/")
.append(mMonth + 1).append("/")
.append(mYear).append(" "));
showDialog(TIME_DIALOG_ID);
}
//-------------------------------------------update time---//
public void updatetime() {
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);
//Datepicker dialog generation
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDate();
}
};
// Timepicker dialog generation
private TimePickerDialog.OnTimeSetListener mTimeSetListener =
new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
mhour = hourOfDay;
mminute = minute;
updatetime();
}
};
@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;
}
}
tệp chính được đưa ra dưới đây
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"/>
<TextView android:id="@+id/time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""/>
<Button
android:id="@+id/timepicker"
android:text="Change Time"
android:layout_height="wrap_content"
android:layout_width="wrap_content"/>
<TextView
android:id="@+id/date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""/>
<Button android:id="@+id/datepicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="200dp"
android:text="Change the date"/>
</LinearLayout>