代码为'；t启动随机活动-Android/Java

我已经写了一些代码来尝试启动一个随机活动。我将在下面发布代码：

private void setupMusicQuestion() {
        ImageButton musicquestion = (ImageButton)      findViewById(R.id.imageButton2);

        musicquestion.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                int min = 1;
                int max = 10;
                ArrayList<Integer> list = new ArrayList<Integer>();
                for(int i = min; i <= max; i++) list.add(i);
                Collections.shuffle(list);

                Integer x = list.get(0);


                switch(x){
                 case 1:
                     startActivity(new Intent(SecondActivity.this, MusicOne.class));
                  break;
                 case 2:
                     startActivity(new Intent(SecondActivity.this, MusicTwo.class));
                  break;
                 case 3:
                     startActivity(new Intent(SecondActivity.this, MusicThree.class));
                  break;
                 case 4:
                     startActivity(new Intent(SecondActivity.this, MusicFour.class));
                  break;
                 case 5:
                     startActivity(new Intent(SecondActivity.this, MusicFive.class));
                  break;
                 case 6:
                     startActivity(new Intent(SecondActivity.this, MusicSix.class));
                  break;
                 case 7:
                     startActivity(new Intent(SecondActivity.this, MusicSeven.class));
                  break;
                 case 8:
                     startActivity(new Intent(SecondActivity.this, MusicEight.class));
                  break;
                 case 9:
                     startActivity(new Intent(SecondActivity.this, MusicNine.class));
                  break;
                 case 10:
                     startActivity(new Intent(SecondActivity.this, MusicTen.class));
                  break;
                 }

private void setupMusicQuestion（）{
ImageButton musicquestion=（ImageButton）findViewById（R.id.imageButton2）；
musicquestion.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
int min=1；
int max=10；
ArrayList=新建ArrayList（）；
对于（int i=min；i
，您必须检查AndroidManifest.xml和CHNAGE启动器活动配置
为什么不使用介于1到10之间的随机数，如：

            int min = 1;
            int max = 10;


            int x = Math.random()*9+1;


            switch(x){
             case 1:
                 startActivity(new Intent(SecondActivity.this, MusicOne.class));
              break;
             case 2:
                 startActivity(new Intent(SecondActivity.this, MusicTwo.class));
              break;
             case 3:
                 startActivity(new Intent(SecondActivity.this, MusicThree.class));
              break;
             case 4:
                 startActivity(new Intent(SecondActivity.this, MusicFour.class));
              break;
             case 5:
                 startActivity(new Intent(SecondActivity.this, MusicFive.class));
              break;
             case 6:
                 startActivity(new Intent(SecondActivity.this, MusicSix.class));
              break;
             case 7:
                 startActivity(new Intent(SecondActivity.this, MusicSeven.class));
              break;
             case 8:
                 startActivity(new Intent(SecondActivity.this, MusicEight.class));
              break;
             case 9:
                 startActivity(new Intent(SecondActivity.this, MusicNine.class));
              break;
             case 10:
                 startActivity(new Intent(SecondActivity.this, MusicTen.class));
              break;
             }

我修好了，这是个愚蠢的错误。谢谢大家！
            int min = 1;
            int max = 10;


            int x = Math.random()*9+1;


            switch(x){
             case 1:
                 startActivity(new Intent(SecondActivity.this, MusicOne.class));
              break;
             case 2:
                 startActivity(new Intent(SecondActivity.this, MusicTwo.class));
              break;
             case 3:
                 startActivity(new Intent(SecondActivity.this, MusicThree.class));
              break;
             case 4:
                 startActivity(new Intent(SecondActivity.this, MusicFour.class));
              break;
             case 5:
                 startActivity(new Intent(SecondActivity.this, MusicFive.class));
              break;
             case 6:
                 startActivity(new Intent(SecondActivity.this, MusicSix.class));
              break;
             case 7:
                 startActivity(new Intent(SecondActivity.this, MusicSeven.class));
              break;
             case 8:
                 startActivity(new Intent(SecondActivity.this, MusicEight.class));
              break;
             case 9:
                 startActivity(new Intent(SecondActivity.this, MusicNine.class));
              break;
             case 10:
                 startActivity(new Intent(SecondActivity.this, MusicTen.class));
              break;
             }