Multiple toggle buttons android issue

Question

i am making an app for controlling 8 relays. Point is i am new to programming and code shows all type of errors while using more than 2 toggle buttons.I hope below will send desired command to my arduino when toggle is on/off. but how do i use if/else when there are many toggles(say in my case 4 toggle) and i also need to last states when i close the app or use app in other device. guess its a lot to ask.

toggleButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (toggleButton.isChecked()) {
            commandArduino("  ");
    Toast.makeText(getApplicationContext(), "led2",Toast.LENGTH_LONG).show();
        } else {
            commandArduino("  ");
    Toast.makeText(getApplicationContext(), "led2",Toast.LENGTH_LONG).show();
        }
    }
});

Answer 1

Please find the below solution..It will workable for you

public class Example extends Activity implements OnClickListener {

private ToggleButton button2;
private ToggleButton button1;
private ToggleButton button3;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.example);
    button1 = (ToggleButton) findViewById(R.id.toggleButton1);
    button2 = (ToggleButton) findViewById(R.id.toggleButton2);
    button3 = (ToggleButton) findViewById(R.id.togglebutton3);

    button1.setOnClickListener(this);
    button2.setOnClickListener(this);
    button3.setOnClickListener(this);


}

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch (v.getId()) {
    case R.id.toggleButton1:
        if(button1.isChecked())
        {
            button1.setChecked(true);

            Toast.makeText(Example.this, "BUTTON1 UNCHECKED", Toast.LENGTH_LONG).show();

        }
        else
        {
            button1.setChecked(false);
            Toast.makeText(Example.this, "BUTTON1 CHECKED", Toast.LENGTH_LONG).show();
        }



        break;
    case R.id.toggleButton2:
        if(button2.isChecked())
        {
            button2.setChecked(true);
            Toast.makeText(Example.this, "BUTTON2 UNCHECKED", Toast.LENGTH_LONG).show();

        }
        else
        {
            button2.setChecked(false);
            Toast.makeText(Example.this, "BUTTON2 CHECKED", Toast.LENGTH_LONG).show();
        }

        break;
    case R.id.togglebutton3:
        if(button3.isChecked())
        {
            button3.setChecked(true);
            Toast.makeText(Example.this, "BUTTON3 UNCHECKED", Toast.LENGTH_LONG).show();

        }
        else
        {
            button3.setChecked(false);
            Toast.makeText(Example.this, "BUTTON3 CHECKED", Toast.LENGTH_LONG).show();
        }

        break;

    default:
        break;
    }
   }
 }