I'm developing a simple app with Android Studio and I need to create a timer to run some methods every 1 second.
I tried the following but it did not work:
int delay = 1000;
int interval = 1000;
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
public void run() {
// métodos ...
}
}, delay, interval);
When the timer is activated for the first time, a fatal error will occur closing the application.
I strongly recommend that you use the Handler class because on android, any process that is time-consuming and not on a thread will be considered a crash and will terminate with a critical error. Not sure, but as far as I know the Times class is not present on Android. Here's the best solution:
import android.os.Bundle;
import android.os.Handler;
public class Nome_da_Classe extends AppCompatActivity implements Runnable{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Handler handler = new Handler(); //contador de tempo
handler.postDelayed(this, 1500); //o exemplo 2000 = 2 segundos
}
@Override
public void run() {
//Esse métedo será execultado a cada período, ponha aqui a sua lógica
}
}
Note that I have put some code from the class so you can see where each line of code is. This works, any problem or question just ask!
import java.util.Timer;
import java.util.TimerTask;
public class Main extends AppCompatActivity {
public void Timer(){
Timer timer = new Timer();
Task task = new Task();
timer.schedule(task, 1000, 1000);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Timer();
}
class Task extends TimerTask{
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
// Metodos
}
});
}
}
}