Android(安卓)TimePicker example

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:id="@+id/btnChangeTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Change Time" />

<TextView
android:id="@+id/lblTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Current Time (H:M): "
android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
android:id="@+id/tvTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textAppearance="?android:attr/textAppearanceLarge" />

<TimePicker
android:id="@+id/timePicker1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

</LinearLayout>

TimePickerDemoActivity.java

package com.cjp.timepickerdemo;

import java.util.Calendar;
import android.app.Activity;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;

public class TimePickerDemoActivity extends Activity {
private TextView tvDisplayTime;
private TimePicker timePicker1;
private Button btnChangeTime;

private int hour;
private int minute;

static final int TIME_DIALOG_ID = 999;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

setCurrentTimeOnView();
addListenerOnButton();

}

// display current time
public void setCurrentTimeOnView() {

tvDisplayTime = (TextView) findViewById(R.id.tvTime);
timePicker1 = (TimePicker) findViewById(R.id.timePicker1);

final Calendar c = Calendar.getInstance();
hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE);

// set current time into textview
tvDisplayTime.setText(
new StringBuilder().append(pad(hour))
.append(":").append(pad(minute)));

// set current time into timepicker
timePicker1.setCurrentHour(hour);
timePicker1.setCurrentMinute(minute);

}

public void addListenerOnButton() {

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

btnChangeTime.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {

showDialog(TIME_DIALOG_ID);

}

});

}

@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case TIME_DIALOG_ID:
// set time picker as current time
return new TimePickerDialog(this,
timePickerListener, hour, minute,false);

}
return null;
}

private TimePickerDialog.OnTimeSetListener timePickerListener =
new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int selectedHour,
int selectedMinute) {
hour = selectedHour;
minute = selectedMinute;

// set current time into textview
tvDisplayTime.setText(new StringBuilder().append(pad(hour))
.append(":").append(pad(minute)));

// set current time into timepicker
timePicker1.setCurrentHour(hour);
timePicker1.setCurrentMinute(minute);

}
};

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

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