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package gao.com;
import android.app.Activity;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Chronometer;
public class TimerActivity extends Activity {
/** Called when the activity is first created. */
private Chronometer chro;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
chro =(Chronometer)findViewById(R.id.chro1);
chro.setFormat("%s");
System.out.println("time"+chro.getBase());
}
//开始计时
public void onStart(View view) {
chro.start();
}
//停止
public void onStop(View view) {
chro.stop();
}
//重置
public void onReset(View view) {
chro.setBase(SystemClock.elapsedRealtime());
chro.stop();
}
}
<?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" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="45pt"
android:layout_marginTop="5pt"
android:text="@string/title"
android:textSize="12pt" />
<Chronometer
android:id="@+id/chro1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginLeft="15pt"
android:layout_marginTop="5pt"
android:text="@string/chro1"
android:textSize="10pt"
android:textColor="#ff0000"/>
<LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button
android:id="@+id/bu1"
android:onClick="onStart"
android:text="@string/bu1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/bu2"
android:onClick="onStop"
android:text="@string/bu2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/bu3"
android:onClick="onReset"
android:text="@string/bu3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>