1. 计时器(Chronometer)
1.1 activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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">
<Chronometer
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="24sp"
android:id="@+id/time1"/>
</LinearLayout>
1.2 MainActivity
public class MainActivity extends AppCompatActivity {
private Chronometer chronometer;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
chronometer=findViewById(R.id.time1);
chronometer.setBase(SystemClock.elapsedRealtime());
chronometer.setFormat("%s");
chronometer.start();
chronometer.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {
@Override
public void onChronometerTick(Chronometer chronometer) {
if((SystemClock.elapsedRealtime()-chronometer.getBase())>60000){
chronometer.stop();
}
}
});
}
}