java.lang.IndexOutOfBoundsException 问题：索引 0 无效，大小为 0

Question

当broadcast receiver尝试发送短信时，我需要删除从listview安排的短信...我收到此错误： java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0当broadcast receiver尝试发送短信时java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0 ，但是当我单击“安排好的”按钮时“它被添加到list view ......现在我向你展示我的代码！

提前谢谢大家！

我希望你能帮助我！

PS：如果我添加了这个方法：

@Override
        public void onItemClick(AdapterView<?> a, View v, int position,
                                long id) {
            //Toast.makeText(MainActivity.this, "Item has been added into your list", Toast.LENGTH_LONG)
                //  .show();
            dataSms.remove(position);
            adapter.notifyDataSetChanged();
        }

它有效，但我希望在发送短信后自动删除第一项！

主要活动：

public class MainActivity extends Activity {
    private static final int PERMS_REQUEST_CODE = 123;
    private static final int REQUEST_CODE = 1;
    TextView textViewTime;
    TimePicker timePicker;
    Button button;

    int hour;
    int minutee;
    //int hour;
    //int minute;


    final int TIME_DIALOG_ID = 999;

    public String sPhone,sSms;
    public EditText etPhone,etSms;

    public Button bStart,bCancel,bTimeSelect,bPhone;
    ArrayList<Sms> dataSms;
    ListView listView;
    public static CustomAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.SEND_SMS}, 1);


        listView = (ListView) findViewById(R.id.listView1);

        dataSms = new ArrayList<Sms>();

        adapter = new CustomAdapter(dataSms, getApplicationContext());

        listView.setAdapter(adapter);
        //Button b=(Button) findViewById(R.id.button1);
        //Button button=(Button) findViewById(R.id.button);

        bStart = (Button)findViewById(R.id.bStart);
        //bCancel = (Button)findViewById(R.id.bCancel);
        bTimeSelect = (Button)findViewById(R.id.bTime);
        bPhone = (Button)findViewById(R.id.bCPhone);





        bStart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            /*  if (hasPermissions()) {
                    // our app has permissions.
                    scheduleAlarm(v);
                } else {
                    //our app doesn't have permissions, So i m requesting permissions.
                    requestPerms();
                }*/
                scheduleAlarm(v);

            }
        });

        bTimeSelect.setOnClickListener(new View.OnClickListener() {
            @TargetApi(Build.VERSION_CODES.HONEYCOMB)
            @Override
            public void onClick(View v) {

                DialogFragment newFragment = new TimePickerFragment();
                newFragment.show(getFragmentManager(),"TimePicker");

            }
        });

        //};
        bPhone.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Uri uri = Uri.parse("content://contacts");
                Intent intent = new Intent(Intent.ACTION_PICK, uri);
                intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);
                startActivityForResult(intent, REQUEST_CODE);
            }
        });



    }


    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    @SuppressLint("ValidFragment")
    public class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener{

        //TimePicker timePicker;
        //int hour;
        //int minutee;

        @TargetApi(Build.VERSION_CODES.HONEYCOMB)
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState){
            //Use the current time as the default values for the time picker
            final Calendar c = Calendar.getInstance();
            int hour = c.get(Calendar.HOUR_OF_DAY);
            int minute = c.get(Calendar.MINUTE);

            //Create and return a new instance of TimePickerDialog
            return new TimePickerDialog(getActivity(),this, hour, minute,
                    DateFormat.is24HourFormat(getActivity()));
        }



        //onTimeSet() callback method
        @TargetApi(Build.VERSION_CODES.M)
        public void onTimeSet(TimePicker view, int hourOfDay, int minute){

            hour=hourOfDay;
            minutee=minute;






        }
    }



    @TargetApi(Build.VERSION_CODES.M)
    public void scheduleAlarm(View V) {
        EditText et1 = (EditText) findViewById(R.id.etPhone);
        EditText et2 = (EditText) findViewById(R.id.etSms);
        String name = et1.getText().toString();
        String sms = et2.getText().toString();
        //adapter.add(new Sms(name, sms));




        PendingIntent pendingIntent;
        //Long time= new GregorianCalendar().getTimeInMillis()+24*60*60*1000;
        Long time = new GregorianCalendar().getTimeInMillis() + 10000;
        //Long time= System.currentTimeMillis() + 10000;

        Intent intentAlarm = new Intent(this, AlarmReceiver.class);
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        Bundle bundle = new Bundle();
        bundle.putCharSequence("Number", name);
        bundle.putCharSequence("Message", sms);
        intentAlarm.putExtras(bundle);



        final Calendar c = Calendar.getInstance();
        c.setTimeInMillis(System.currentTimeMillis());
        c.set(Calendar.HOUR_OF_DAY, hour);
        c.set(Calendar.MINUTE, minutee);
        //alarmManager.set(AlarmManager.RTC_WAKEUP, time, PendingIntent.getBroadcast(this, 1, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT));
        alarmManager.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), PendingIntent.getBroadcast(this, 1, intentAlarm, PendingIntent.FLAG_UPDATE_CURRENT));


        Toast.makeText(this, "Messaggio programmato!", Toast.LENGTH_LONG).show();

        adapter.add(new Sms(name, sms));








    }



}

广播接收器：

  public class AlarmReceiver extends BroadcastReceiver {


    private Intent intent;
    String value1 = null;
    String value2 = null;
    ListView lv;
    ArrayList<String> al;
    ArrayAdapter<String> aa;
    ArrayList<Sms> dataSms;
    public static CustomAdapter adapter;
    ListView listView;


    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub


        dataSms = new ArrayList<Sms>();
        adapter = new CustomAdapter(dataSms, context);

        //dataSms.remove(0);
        //adapter.notifyDataSetChanged();
        //adapter.remove(adapter.getItem(0));


        String phoneNumberReciver = "";

        String message = "blablabla";





        String name = intent.getStringExtra("Number");
        String sms = intent.getStringExtra("Message");

        /*String SPhone =i.getStringExtra("exPhone");
        String SSms = i.getStringExtra("exSmS");*/
        //android.telephony.SmsManager sms= SmsManager.getDefault();
        //sms.sendTextMessage(phoneNumberReciver, null, message, null, null);
        SmsManager smsManager = SmsManager.getDefault();
        smsManager.sendTextMessage(name, null, sms, null, null);
        Toast.makeText(context, "Messaggio inviato!", Toast.LENGTH_LONG).show();

        dataSms.remove(0);
        adapter.notifyDataSetChanged();

    /*    @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
            liste.remove(position);
            adapter.notifyDataSetChanged();



        }*/

//    public Intent getIntent() {
//        return intent;
//    }
    }
}

Answer 1

错误在堆栈跟踪中：

dataSms = new ArrayList<Sms>();
// ...
dataSms.remove(0);

您永远不会在列表中添加项目，但您想删除一个

Answer 2

您的 ArrayList 中没有数据。 这就是堆栈跟踪说大小为 0 的原因。如果大小为 0，那么您如何从 ArrayList 中删除元素。

删除这一行dataSms.remove(0);

Answer 3

请检查您已声明的 ArrayList。 我认为在声明您没有在数组列表中添加任何内容之后。

dataSms = new ArrayList<Sms>();

建议你逐行调试。 在尝试从 arrayList 中删除值之前。 尝试检查其大小是否为零或是否为空。 如果没有，那么您可以尝试下一步。

dataSms.remove(0);

如果解决方案有用，请投票并标记。

谢谢！