Question

How can i toggle the color of an ImageButton when user presses the ImageButton?

I want the ImageButton to toggle between red (power off) and green (power) when pressed.

Code:

    ImageButton star, power;
Intent i;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    star = (ImageButton)findViewById(R.id.ibStar);
    star.setOnClickListener(this);

    power = (ImageButton)findViewById(R.id.ibPower);
    power.setOnTouchListener(this);


}

public boolean onTouch(View v, MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN ) {
        power.setImageResource(R.drawable.power);

    }
     else if (event.getAction() == MotionEvent.ACTION_UP ) {
        power.setImageResource(R.drawable.power_off);

    }

    return true;
}

Answer 1

I think this is what you need.

ImageButton star, power;
Intent i;
boolean isOn=false;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    star = (ImageButton)findViewById(R.id.ibStar);
    star.setOnClickListener(this);

    power = (ImageButton)findViewById(R.id.ibPower);
    power.setOnTouchListener(this);


}

public boolean onTouch(View v, MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN ) {
        isOn=!isOn; // change its state to the oposite one

        if(isOn)
            power.setImageResource(R.drawable.power);
        else
            power.setImageResource(R.drawable.power_off);
    }

    return true;
}