Android中的按键顺序打乱

首先要找到相对应的控件，之后再来一个数组，再把数组里面的数字显示到控件上面。

private void initView() {
        mNum0 = (Button) findViewById(R.id.button0);
        mNum1 = (Button) findViewById(R.id.button1);
        mNum2 = (Button) findViewById(R.id.button2);
        mNum3 = (Button) findViewById(R.id.button3);
        mNum4 = (Button) findViewById(R.id.button4);
        mNum5 = (Button) findViewById(R.id.button5);
        mNum6 = (Button) findViewById(R.id.button6);
        mNum7 = (Button) findViewById(R.id.button7);
        mNum8 = (Button) findViewById(R.id.button8);
        mNum9 = (Button) findViewById(R.id.button9);
        //洗牌
        int[] num = new int[]{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        shuffleSort(num);
        mNum0.setText(String.valueOf(num[0]));
        mNum1.setText(String.valueOf(num[1]));
        mNum2.setText(String.valueOf(num[2]));
        mNum3.setText(String.valueOf(num[3]));
        mNum4.setText(String.valueOf(num[4]));
        mNum5.setText(String.valueOf(num[5]));
        mNum6.setText(String.valueOf(num[6]));
        mNum7.setText(String.valueOf(num[7]));
        mNum8.setText(String.valueOf(num[8]));
        mNum9.setText(String.valueOf(num[9]));

而这些一开始都是按一定的顺序排好的。

  //洗牌算法
    private void shuffleSort(int[] data) {
        for (int i = 0; i < data.length - 1; i++) {
            int j = (int) (data.length * Math.random());
            swap(data, i, j);
        }
    }

    private void swap(int[] data, int i, int j) {
        if (i == j) {
            return;
        }
        data[i] = data[i] + data[j];
        data[j] = data[i] - data[j];
        data[i] = data[i] - data[j];
    }