this is very good site [on hold]

i am too confused about my last code in app. please give me some suggestions that how can i resolve this issue. when user click on hint button 1 hint is generated but when user again click on hint button 2 hints are show at same time please help meto solve this

my code is:

@Override
                public void onClick(View arg0) {

                     if(hint==0){

                         t6=(TextView)findViewById(R.id.textView6);
                         for(int i=0;i<=1;i++) {

                             Random random = new Random();
                             int rndIndex = random.nextInt(img.length);
                           img[rndIndex].setVisibility(View.DRAWING_CACHE_QUALITY_HIGH);
                     }

                     }
                              else {

                                  hint -=1;
                         String str= Integer.toString(hint);
                         t6.setText(str);


                    if(hint==2){

                         for(int i=0;i<=1;i++) {

                             Random random = new Random();
                             int rndIndex = random.nextInt(img.length);
                           img[rndIndex].setVisibility(View.DRAWING_CACHE_QUALITY_HIGH);
                         }}

                          else if (hint==1){

                             for(int i=0;i<=1;i++) {

                                 Random random = new Random();
                               int rndIndex = random.nextInt(img.length);
                               img[rndIndex].setVisibility(View.FOCUS_FORWARD);
                         }
                          }

                         else if(hint==0){
                             t4.setOnClickListener(null);
                         }

                         }
                               }
            });