TrafficSim/app/src/main/java/de/hems/trafficsim/MainActivity.java
Loch Christian (uib05376) 6abefa9f19 Implement ActionListeners for SeekBars
Adjust SeekBar styles
Implement live updating
2020-11-11 16:10:35 +01:00

147 lines
6.1 KiB
Java

package de.hems.trafficsim;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
import java.util.Observable;
import java.util.Observer;
public class MainActivity extends AppCompatActivity implements Observer, SeekBar.OnSeekBarChangeListener {
public static final int defaultNoOfVehicles = 25;
public static final int defaultTrackLength = 100;
public static final float defaultBrakeProb = 0.3f;
public static final float defaultMaxVelocity = 5.0f;
protected Track track;
protected TimeRecordView trackView;
protected Worker worker;
protected LinearLayout viewStack;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.track = new Track(defaultNoOfVehicles, defaultTrackLength, defaultBrakeProb, defaultMaxVelocity);
this.track.addObserver(this);
this.viewStack = (LinearLayout) findViewById(R.id.trackViewStack);
SeekBar trackLengthSeekBar = (SeekBar) findViewById(R.id.trackLengthSeekBar);
trackLengthSeekBar.setOnSeekBarChangeListener(this);
trackLengthSeekBar.setProgress(defaultTrackLength);
SeekBar maxVelocitySeekBar = (SeekBar) findViewById(R.id.maxVelocitySeekBar);
maxVelocitySeekBar.setOnSeekBarChangeListener(this);
maxVelocitySeekBar.setProgress((int)defaultMaxVelocity);
SeekBar noOfVehiclesSeekBar = (SeekBar) findViewById(R.id.noOfVehiclesSeekBar);
noOfVehiclesSeekBar.setOnSeekBarChangeListener(this);
noOfVehiclesSeekBar.setProgress(defaultNoOfVehicles);
SeekBar brakeProbabilitySeekBar = (SeekBar) findViewById(R.id.brakeProbabilitySeekBar);
brakeProbabilitySeekBar.setOnSeekBarChangeListener(this);
brakeProbabilitySeekBar.setProgress((int)(defaultBrakeProb*20));
}
@Override
public void update(Observable observable, Object o) {
final Track trackRef = this.track;
final LinearLayout viewStackRef = this.viewStack;
final MainActivity mainActivity = this;
final TextView lastAvgView = (TextView) findViewById(R.id.avgVeloLastView);
final TextView overallAvgView = (TextView) findViewById(R.id.avgVeloOverallView);
runOnUiThread(new Runnable() {
@Override
public void run() {
TimeRecordView newTrView = new TimeRecordView(mainActivity, trackRef);
if (viewStackRef.getChildCount() > 0)
viewStackRef.removeViewAt(0);
viewStackRef.addView(newTrView);
lastAvgView.setText(String.valueOf(trackRef.getLastAvg()));
overallAvgView.setText(String.valueOf(trackRef.getOverallAvg()));
}
});
}
public void onStepButtonClick(View view) {
this.track.timeElapse();
}
public void onPlayButtonClick(View view) {
Button playButton = (Button) findViewById(R.id.playButton);
playButton.setEnabled(false);
Button stepButton = (Button) findViewById(R.id.stepButton);
stepButton.setEnabled(false);
Button stopButton = (Button) findViewById(R.id.stopButton);
stopButton.setEnabled(true);
this.worker = new Worker(track);
this.worker.start();
}
public void onStopButtonClick(View view) {
Button playButton = (Button) findViewById(R.id.playButton);
playButton.setEnabled(true);
Button stepButton = (Button) findViewById(R.id.stepButton);
stepButton.setEnabled(true);
Button stopButton = (Button) findViewById(R.id.stopButton);
stopButton.setEnabled(false);
this.worker.setStop(true);
try {
this.worker.join();
} catch (InterruptedException ex) {
}
this.worker = null;
}
protected void updateTrack() {
int newTrackLength = ((SeekBar)(findViewById(R.id.trackLengthSeekBar))).getProgress();
SeekBar noOfVehiclesSeekBar = (SeekBar)(findViewById(R.id.noOfVehiclesSeekBar));
int newNoOfVehicles = noOfVehiclesSeekBar.getProgress();
if (newTrackLength < newNoOfVehicles) { // Dont allow values greater than track length!
newNoOfVehicles = (int) newTrackLength;
noOfVehiclesSeekBar.setProgress(newNoOfVehicles);
}
float newMaxVelocity = ((SeekBar) findViewById(R.id.maxVelocitySeekBar)).getProgress();
SeekBar brakeProbabilitySeekBar = (SeekBar) findViewById(R.id.brakeProbabilitySeekBar);
float newBrakeProb = (float)brakeProbabilitySeekBar.getProgress() / (float)brakeProbabilitySeekBar.getMax();
this.track = new Track(newNoOfVehicles, newTrackLength, newBrakeProb, newMaxVelocity);
this.track.addObserver(this);
if (this.worker != null) { // There was a simulation running already
this.worker.setStop(true);
try {
this.worker.join();
} catch (InterruptedException ex) {
}
this.worker = new Worker(track);
this.worker.start();
}
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (seekBar == (SeekBar)(findViewById(R.id.noOfVehiclesSeekBar))) {
this.updateTrack();
} else if (seekBar == (SeekBar)(findViewById(R.id.brakeProbabilitySeekBar))) {
float newBrakeProb = (float)seekBar.getProgress() / (float)seekBar.getMax();
System.out.println(newBrakeProb);
this.track.setBrakeProb(newBrakeProb);
} else if (seekBar == (SeekBar)(findViewById(R.id.maxVelocitySeekBar))) {
this.track.setMaxVelocity(seekBar.getProgress());
} else if (seekBar == (SeekBar)(findViewById(R.id.trackLengthSeekBar))) {
this.updateTrack();
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
}