安卓app_sl3_22计时器_显示当前时间_系统时间

安卓app_sl3_22计时器_显示当前时间_系统时间

package com.example.sl3_22;

import java.text.SimpleDateFormat;
import java.util.Date;

import android.app.Activity;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Chronometer;
import android.widget.Chronometer.OnChronometerTickListener;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Chronometer ch=(Chronometer)findViewById(R.id.chronometer1);
        final TextView current_time=(TextView)findViewById(R.id.textView_Current_Time);
        final TextView current_time2=(TextView)findViewById(R.id.textView_Current_Time2);
        ch.setBase(SystemClock.elapsedRealtime());//设置其实时间
        ch.setFormat("已用时间: %s");
        ch.start();
        
        ch.setOnChronometerTickListener(new OnChronometerTickListener(){

            @Override
            public void onChronometerTick(Chronometer chronometer) {
                
                Date date=new Date();
                SimpleDateFormat dateFormat= new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
                //dateFormat.format(date);
                current_time.setText(dateFormat.format(date));
                SimpleDateFormat dateFormat2= new SimpleDateFormat("hh:mm:ss");
                //dateFormat.format(date);
                current_time2.setText(dateFormat2.format(date));
                // TODO 自动生成的方法存根
                if(SystemClock.elapsedRealtime()-ch.getBase()>=10000)
                {
                    //ch.stop();
                }
            }
            
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.sl3_22.MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <Chronometer
        android:id="@+id/chronometer1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/textView1"
        android:layout_marginLeft="28dp"
        android:layout_toRightOf="@+id/textView1"
        android:text="Chronometer" />

    <TextView
        android:id="@+id/textView_Current_Time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/chronometer1"
        android:layout_marginTop="18dp"
        android:text="Large Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView_Current_Time2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textView_Current_Time"
        android:layout_marginTop="17dp"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

</RelativeLayout>