Hướng dẫn sử dụng Android TimePickerDialog
Xem thêm các chuyên mục:
Android TimePickerDialog đặt một TimePicker trên một Dialog, nó cho phép người dùng lựa chọn một thời gian (Time). Về cơ bản không có sự khác biệt đáng kể về việc sử dụng giữa TimePickerDialog và TimePicker, nếu bạn muốn tiết kiệm không gian của ứng dụng hãy sử dụng TimePickerDialog.
TimePickerDialog được tạo ra trong thời gian chạy của ứng dụng, khi mà người dùng cần nó để chọn một thời gian. Bạn có thể tạo và hiển thị nó bằng mã Java:
TimePickerDialog (Clock Mode) (Default)
boolean is24HView = true; int selectedHour = 10; int selectedMinute = 20; // Time Set Listener. TimePickerDialog.OnTimeSetListener timeSetListener = new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { editTextTime.setText(hourOfDay + ":" + minute ); lastSelectedHour = hourOfDay; lastSelectedMinute = minute; } }; // Create TimePickerDialog: TimePickerDialog timePickerDialog = new TimePickerDialog(this, timeSetListener, lastSelectedHour, lastSelectedMinute, is24HView); // Show timePickerDialog.show();

TimePickerDialog (Spinner Mode)
boolean is24HView = true; int selectedHour = 10; int selectedMinute = 20; // Time Set Listener. TimePickerDialog.OnTimeSetListener timeSetListener = new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { editTextTime.setText(hourOfDay + ":" + minute ); lastSelectedHour = hourOfDay; lastSelectedMinute = minute; } }; // Create TimePickerDialog: TimePickerDialog timePickerDialog = new TimePickerDialog(this, android.R.style.Theme_Holo_Light_Dialog_NoActionBar, timeSetListener, lastSelectedHour, lastSelectedMinute, is24HView); // Show timePickerDialog.show();

Xem trước ví dụ:

24H View Mode

12H View Mode
Trên Android Studio tạo mới một project:
- File > New > New Project > Empty Activity
- Name: TimePickerDialogExample
- Package name: org.o7planning.timepickerdialogexample
- Language: Java
Giao diện của ứng dụng:

activity_main.java
<?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <EditText android:id="@+id/editText_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="16dp" android:layout_marginLeft="16dp" android:layout_marginTop="90dp" android:ems="10" android:inputType="time" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <Button android:id="@+id/button_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="16dp" android:layout_marginLeft="16dp" android:layout_marginTop="90dp" android:text="Select Time" app:layout_constraintStart_toEndOf="@+id/editText_time" app:layout_constraintTop_toTopOf="parent" /> <CheckBox android:id="@+id/checkBox_isSpinnerMode" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="16dp" android:layout_marginLeft="16dp" android:layout_marginTop="16dp" android:text="Spinner Mode?" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/editText_time" /> <CheckBox android:id="@+id/checkBox_is24HView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="16dp" android:layout_marginLeft="16dp" android:layout_marginTop="16dp" android:text="Display TimePickerDialog in 24H mode?" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/checkBox_isSpinnerMode" /> </androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package org.o7planning.timepickerdialogexample; import androidx.appcompat.app.AppCompatActivity; import android.app.TimePickerDialog; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; import android.widget.TimePicker; import java.util.Calendar; public class MainActivity extends AppCompatActivity { private EditText editTextTime; private Button buttonTime; private CheckBox checkBoxIsSpinnerMode; private CheckBox checkBoxIs24HView; private int lastSelectedHour = -1; private int lastSelectedMinute = -1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); this.editTextTime = (EditText) this.findViewById(R.id.editText_time); this.buttonTime = (Button) this.findViewById(R.id.button_time); this.checkBoxIsSpinnerMode = (CheckBox) this.findViewById(R.id.checkBox_isSpinnerMode); this.checkBoxIs24HView = (CheckBox) this.findViewById(R.id.checkBox_is24HView); this.buttonTime.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { buttonSelectTime(); } }); } private void buttonSelectTime() { if(this.lastSelectedHour == -1) { // Get Current Time final Calendar c = Calendar.getInstance(); this.lastSelectedHour = c.get(Calendar.HOUR_OF_DAY); this.lastSelectedMinute = c.get(Calendar.MINUTE); } final boolean is24HView = this.checkBoxIs24HView.isChecked(); final boolean isSpinnerMode = this.checkBoxIsSpinnerMode.isChecked(); // Time Set Listener. TimePickerDialog.OnTimeSetListener timeSetListener = new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { editTextTime.setText(hourOfDay + ":" + minute ); lastSelectedHour = hourOfDay; lastSelectedMinute = minute; } }; // Create TimePickerDialog: TimePickerDialog timePickerDialog = null; // TimePicker in Spinner Mode: if(isSpinnerMode) { timePickerDialog = new TimePickerDialog(this, android.R.style.Theme_Holo_Light_Dialog_NoActionBar, timeSetListener, lastSelectedHour, lastSelectedMinute, is24HView); } // TimePicker in Clock Mode (Default): else { timePickerDialog = new TimePickerDialog(this, timeSetListener, lastSelectedHour, lastSelectedMinute, is24HView); } // Show timePickerDialog.show(); } }