Android时间选择器示例

Android时间选择器 小部件用于选择日期。它允许你按小时和分钟选择时间。你不能按秒选择时间。

android.widget.TimePicker是FrameLayout类的子类。

Android时间选择器示例

让我们看一个简单的Android时间选择器示例。

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>  
<RelativeLayout 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="example.javatpoint.com.timepicker.MainActivity">  

    <TextView  
        android:id="@+id/textView1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_above="@+id/button1"  
        android:layout_alignParentLeft="true"  
        android:layout_alignParentStart="true"  
        android:layout_marginBottom="102dp"  
        android:layout_marginLeft="30dp"  
        android:layout_marginStart="30dp"  
        android:text="" />  

    <Button  
        android:id="@+id/button1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignParentBottom="true"  
        android:layout_centerHorizontal="true"  
        android:layout_marginBottom="20dp"  
        android:text="Change Time" />  

    <TimePicker  
        android:id="@+id/timePicker"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_above="@+id/textView1"  
        android:layout_centerHorizontal="true"  
        android:layout_marginBottom="36dp" />  
</RelativeLayout>

Activity类

package example.javatpoint.com.timepicker;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;

public class MainActivity extends AppCompatActivity {
    TextView textview1;
    TimePicker timepicker;
    Button changetime;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textview1=(TextView)findViewById(R.id.textView1);
        timepicker=(TimePicker)findViewById(R.id.timePicker);
        //Uncomment the below line of code for 24 hour view
        timepicker.setIs24HourView(true);
        changetime=(Button)findViewById(R.id.button1);

        textview1.setText(getCurrentTime());

        changetime.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view) {
                textview1.setText(getCurrentTime());
            }
        });

    }

    public String getCurrentTime(){
        String currentTime="Current Time: "+timepicker.getCurrentHour()+":"+timepicker.getCurrentMinute();
        return currentTime;
    }

}