Java.lang.ArrayIndexOutOfBoundException - AlertDialog

Question

我正在尝试构建一个应用程序，如果用户单击一个按钮，它将显示一个带有 multiChoiceItems 的警告对话框，

我从 ArrayList(已转换为数组字符串)中为 multiChoiceItems 中的选项分配了值，但是当我尝试单击按钮时，程序出错而不是显示对话框有了选项，

它抛出一个 java.lang.ArrayIndexOutOfBoundException 异常，但我不知道错误在哪里以及我应该如何修复它。

这是我的一段代码和 Logcat:

    @Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.create_todolist);
    sessionAndDeclaration();
    getActionBar().setDisplayShowHomeEnabled(false);
    new AttemptGetReceiver().execute();
}

class AttemptGetReceiver extends AsyncTask<Void, Void, Boolean> {
    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub
        super.onPreExecute();
        pd = new ProgressDialog(CreateToDoList.this);
        pd.setMessage("Loading...");
        pd.setIndeterminate(false);
        pd.show();
        pd.setCancelable(true);
    }

    // will get group member from selected group id to be receiver
    @Override
    protected Boolean doInBackground(Void... arg0) {
        // TODO Auto-generated method stub
        int success = 0;
        try {
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("GroupId", groupId));

            JSONObject json = jsonParser.makeHttpRequest(url, "POST",
                    params);
            success = json.getInt("success");
            if (success == 1) {
                Log.d("Success", "Getting parsed data");
                mMember = json.getJSONArray("members");

                try {
                    for (int i = 0; i < mMember.length(); i++) {
                        JSONObject c = mMember.getJSONObject(i);
                        String parsedMember = c.getString("Username");
                        mMemberList.add(parsedMember);
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }

            }

        } catch (JSONException e) {

        }

        return null;
    }

    @Override
    protected void onPostExecute(Boolean result) {
        // TODO Auto-generated method stub
        super.onPostExecute(result);
        pd.dismiss();

    }

}

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch (v.getId()) {

    case R.id.bChooseReceiver:
        alertDialogListReceiver();
        break;

}

public void alertDialogListReceiver() {
    // TODO Auto-generated method stub
    stringList.clear();
    final String[] listMember = new String[mMemberList.size()];
    final boolean[] itemsChecked = new boolean[mMemberList.size()];
    for (int i = 0; i < mMemberList.size(); i++) {
        listMember[i] = mMemberList.get(i);
    }

    stringList.clear();

    AlertDialog.Builder builder = new AlertDialog.Builder(
            CreateToDoList.this);

    builder.setTitle("Choose Your Receiver : ");

    builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            xmlListReceiver.setText("Post To : ");

            for (int i = 0; i < listMember.length; i++) {
                if (itemsChecked[i]) {
                    stringList.add(listMember[i]);
                    itemsChecked[i] = false;
                }

                Log.d("flag", "after for");

            }
            String string = "";
            for (int i = 0; i < stringList.size(); i++) {
                xmlListReceiver.setText("Send To : ");
                string = string + " " + stringList.get(i);

            }
            xmlListReceiver.setText(xmlListReceiver.getText().toString()
                    + string);
        }
    });
    builder.setMultiChoiceItems(listMember, new boolean[] { false, false,
            false }, new DialogInterface.OnMultiChoiceClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which,
                boolean isChecked) {
            itemsChecked[which] = isChecked;
        }
    });
    builder.show();
    Log.d("flag", "bottom of alert dialog");
}
}

日志:

02-01 22:23:40.866: E/AndroidRuntime(28969): FATAL EXCEPTION: main
02-01 22:23:40.866: E/AndroidRuntime(28969): Process: com.thesis.teamizer, PID: 28969
02-01 22:23:40.866: E/AndroidRuntime(28969): java.lang.ArrayIndexOutOfBoundsException: length=3; index=3
02-01 22:23:40.866: E/AndroidRuntime(28969):    at com.android.internal.app.AlertController$AlertParams$1.getView(AlertController.java:894)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.AbsListView.obtainView(AbsListView.java:2712)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.ListView.measureHeightOfChildren(ListView.java:1274)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.ListView.onMeasure(ListView.java:1186)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.View.measure(View.java:17495)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5363)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1410)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.View.measure(View.java:17495)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5363)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1410)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.View.measure(View.java:17495)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5363)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.View.measure(View.java:17495)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5363)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.View.measure(View.java:17495)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5363)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2548)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.View.measure(View.java:17495)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2285)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1371)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1595)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6637)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.Choreographer.doCallbacks(Choreographer.java:614)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.Choreographer.doFrame(Choreographer.java:584)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:800)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.os.Handler.handleCallback(Handler.java:733)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.os.Handler.dispatchMessage(Handler.java:95)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.os.Looper.loop(Looper.java:146)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at android.app.ActivityThread.main(ActivityThread.java:5602)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at java.lang.reflect.Method.invokeNative(Native Method)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at java.lang.reflect.Method.invoke(Method.java:515)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
02-01 22:23:40.866: E/AndroidRuntime(28969):    at dalvik.system.NativeStart.main(Native Method)

Answer 1

我认为问题在于您在此处设置了默认项目状态(选中或未选中):

builder.setMultiChoiceItems(listMember, new boolean[] { false, false,
        false }, new DialogInterface.OnMultiChoiceClickListener() {

对于 3 个项目，但您可以有不同数量的项目:mMemberList.size()，来自 javadoc :

checkedItems specifies which items are checked. It should be null in which case no items are checked. If non null it must be exactly the same length as the array of items.

对 checkedItems 使用 null 应该可以解决问题:

builder.setMultiChoiceItems(listMember, null, new DialogInterface.OnMultiChoiceClickListener() {