Question

我收到此错误：

IllegalArgumentException

执行以下方法时。我不知道为什么会这样。

这里有什么想法吗？

    public void sendNoteWithoutImage(){

    Toast.makeText(getContext(), "Step 1", Toast.LENGTH_LONG).show();

    // saving objects
    Note notesRealmClass = new Note();

    notesRealmClass.setTitle(titleStr);

    Toast.makeText(getContext(), "Step 2", Toast.LENGTH_LONG).show();

    ChannelIDs = TextUtils.join(" ",selectedItems);

    Toast.makeText(getContext(), "Step 3", Toast.LENGTH_LONG).show();

    notesRealmClass.setObjId(objId);

    Toast.makeText(getContext(), "Step 4", Toast.LENGTH_LONG).show();

    // save object asynchronously
    Backendless.Persistence.save(notesRealmClass, new AsyncCallback<Note>() {
        public void handleResponse(Note note) {

            Toast.makeText(getContext(), "Step 5", Toast.LENGTH_LONG).show();
            // new Contact instance has been saved
            Toast.makeText(getActivity(), "Successfully posted ", Toast.LENGTH_SHORT).show();

        }

        public void handleFault(BackendlessFault fault) {

            Toast.makeText(getContext(), "Step 6", Toast.LENGTH_LONG).show();
            Log.d("ERROR : ", "" + fault.getMessage());
            Log.d("ERROR Code: ",""+fault.getCode());
            Toast.makeText(getActivity(), "" + fault.getMessage(), Toast.LENGTH_SHORT).show();
            // an error has occurred, the error code can be retrieved with fault.getCode()
        }
    });}

正如你所看到的，我把数字吐司检查代码的哪些部分正在执行。从步骤1到4，一切都很好，但不是在第5步。我在第6步直接收到错误，错误的打印是：

02-18 12:54:09.025 25161-25161/pb.package D/ERROR :: rx/Observable
02-18 12:54:09.025 25161-25161/pb.package D/ERROR Code:: IllegalArgumentException

Answer 1

您的问题应该是在AsyncCallBack中创建Toast时。因为您在匿名类AsyncCallBack中使用它，所以不能简单地调用getContext或getActivity，因为您不再属于Activity的范围。试试这个：

Toast.makeText(NameOfYourActivityClass.this, "Successfully posted ", Toast.LENGTH_SHORT).show();

例如，假设您的Acitivity被称为“NotesActivity”，那么您可以这样做：

Toast.makeText(NotesActivity.this, "Successfully posted ", Toast.LENGTH_SHORT).show();

来自扩展RealmObject的类的IllegalArgumentException（java）

1 个答案: