not work else condition please help me

enter code here

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    if(disco_boo == false){
        disco_boo = true;
        Toast.makeText(MainActivity.this, "" + disco_boo, 1000).show();
        handler.post(dico_light);
    }else{
        disco_boo = false;
        Toast.makeText(MainActivity.this, "" + disco_boo, 1000).show();
        handler.post(dico_light);

    }
}