Android sqlite 数据库错误 IndexOutOfBoundException

Question

我正在尝试从 sq-lite 数据库中删除数据，数据已加载到带有复选框的自定义列表视图中。当用户选中某个复选框然后按删除按钮时，它应该删除所有选中的数据。

一切正常，它正在删除所有检查的数据。但问题出现在最后两个数据上。当最后2个数据剩余时，如果我选择两个数据进行删除，那么它会出错。

Logcat 在下面

12-16 12:55:51.049: E/AndroidRuntime(11489): FATAL EXCEPTION: main
12-16 12:55:51.049: E/AndroidRuntime(11489): java.lang.IndexOutOfBoundsException:     Invalid index 1, size is 1
12-16 12:55:51.049: E/AndroidRuntime(11489):    at   java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at java.util.ArrayList.get(ArrayList.java:304)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at iqualtech.skirr.Classes$1$1.onClick(Classes.java:98)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:169)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at android.os.Handler.dispatchMessage(Handler.java:99)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at   android.os.Looper.loop(Looper.java:154)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at android.app.ActivityThread.main(ActivityThread.java:4624)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at java.lang.reflect.Method.invokeNative(Native Method)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at java.lang.reflect.Method.invoke(Method.java:511)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
12-16 12:55:51.049: E/AndroidRuntime(11489):    at dalvik.system.NativeStart.main(Native Method)

我的删除功能如下

private void deleteMenuSpinner() {
            AlertDialog.Builder alertDialog = new AlertDialog.Builder(
                    Classes.this);

            final Spinner spinnerDelete = new Spinner(Classes.this);
            alertDialog.setView(spinnerDelete);

            adapterSpinner = ArrayAdapter.createFromResource(Classes.this,
                    R.array.delete_menu,
                    android.R.layout.simple_spinner_item);
            adapterSpinner
                    .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinnerDelete.setAdapter(adapterSpinner);

            alertDialog.setPositiveButton("Ok",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int which) {
                            Code.i = true;
                            int len = mListView.getCount();
                            SparseBooleanArray checked = mListView
                                    .getCheckedItemPositions();
                            for (int i = 0; i < len; i++)
                                if (checked.get(i)) {
                                    Code.i = false;
                                    String[] delete = names2.get(i);
                                    String idString = delete[0];
                                    long idLong = Long.valueOf(idString);
                                    Log.d("Deleting...", idLong + "");
                                    dataManipulator.delete(idLong);
                                    names2.remove(i);
                                }
                            if (Code.i == true) {
                                AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                                        Classes.this);
                                alertDialogBuilder.setTitle("No Data");
                                alertDialogBuilder
                                        .setMessage(
                                                "No Data Available to Delete")
                                        .setCancelable(false)
                                        .setPositiveButton(
                                                "Ok",
                                                new DialogInterface.OnClickListener() {
                                                    public void onClick(
                                                            DialogInterface dialog,
                                                            int id) {
                                                    }
                                                });
                                AlertDialog alertDialog = alertDialogBuilder
                                        .create();
                                alertDialog.show();
                            } else {
                                names2 = dataManipulator.selectAll();
                                stg1 = new String[names2.size()];
                                int x = 0;
                                String stg;

                                for (String[] name : names2) {
                                    stg = "Class Name : " + name[1];
                                    stg1[x] = stg;
                                    x++;
                                }
                                adapter = new ArrayAdapter<String>(
                                        Classes.this,
                                        R.layout.custom_list_item_multiple_choice,
                                        stg1);
                                mListView
                                        .setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
                                mListView
                                        .setBackgroundResource(R.drawable.assignmentheader);
                                mListView
                                        .setCacheColorHint(Color.TRANSPARENT);
                                mListView.setAdapter(adapter);
                                adapter.notifyDataSetChanged();
                            }
                        }
                    });

            alertDialog.setNegativeButton("Cancel",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int which) {
                            dialog.cancel();
                        }
                    });
            alertDialog.show();
        }
    });

下面一行报错

String[] delete = names2.get(i);

Answer 1

java.lang.IndexOutOfBoundsException:     Invalid index 1, size is 1

下面一行报错

String[] delete = names2.get(i);

names2 数组列表只有一个元素（大小为 1），但您正在尝试 get() 第二个元素（索引 1）。

代码没有显示您如何设置names2 列表，但无论如何i 索引循环的len 约束来自mListView.getCount()，这可能不正确。