ArrayIndexOutOfBoundsException。安卓[重复]

Question

我在某些设备上的谷歌开发者控制台上遇到 ArrayIndexOutOfBoundsException 崩溃。这对我来说很奇怪，因为它不会发生在我的设备和我测试过的其他一些设备上，而且我还在模拟器上不同版本的 API 上测试了我的 apk，并且不会发生崩溃。我完全盲目应该怎么做才能避免这种崩溃，因为我看不到它。在button_array[btn_ref] = new Button(mContext); 上崩溃 下面附上我的按钮数组代码：

public static Button[] button_array = null;
int btn_ref = 0;

int count = 0;
        for (int i = 0; i < words.size(); i++) {

            if (i >= 5) {

                for (int z = i; z < words.size(); z++) {
                    bonus_words.add(words.get(z));
                }
                if (!checkResult.equals("true")) {
                    tinydb.putListString("BonusList", bonus_words);
                }
                break;
            } else {
                char[] eachLetterinArray = words.get(i).toCharArray();
                for (int j = 0; j < eachLetterinArray.length; j++) {
                    if (Character.isLetter(eachLetterinArray[j])) {
                        count++;
                    }
                }
            }

        }

button_array = new Button[count];

 for (int i = 0; i < words.size(); i++) {
            int z = words.get(i).length();

            LinearLayout ln = new LinearLayout(mContext);
            ln.setOrientation(LinearLayout.HORIZONTAL);
            ln.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                    LinearLayout.LayoutParams.WRAP_CONTENT, 1.0f));

            row = i;
            int row_items_count_start = 0;
            int row_items_count_end = 0;

            boolean first_time_check_row = true;

for (i = 0; i < z; i++) {

                row_items_count_end = btn_ref;
                if (first_time_check_row) {
                    row_items_count_start = btn_ref;
                    first_time_check_row = false;
                }

                button_array[btn_ref] = new Button(mContext); //**Getting crash here**

                LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(width_height_cal, width_height_cal, 0.1f);
                p.setMargins(5, 5, 5, 5);
                button_array[btn_ref].setLayoutParams(p);
                button_array[btn_ref].setTextColor(Color.WHITE);
                button_array[btn_ref].setBackgroundResource(R.drawable.un_filled_box2);
                ln.addView(button_array[btn_ref]);

                btn_ref++;
            }

            indexes.add("row " + row + "," + row_items_count_start + "," + row_items_count_end + "," + words.get(i));
            vert_lay.setOrientation(LinearLayout.VERTICAL);
            vert_lay.addView(ln);

            if (indexes.size() >= 5) {
                break;
            }

btn_ref 用于将按钮的索引保存在数组中，然后我将该按钮数组放入布局中

Answer 1

你必须用大小初始化一个数组

int max_word_size = 20; //for example
public static Button[] button_array = new Button[max_word_size ];