Question

 String options[] = new String[3];
   // options[0] = "Select IVC Option";
    int i =0;
    IDataObject emailobject = inMemoryCache_getDataObject("EMAIL_CONTACT");
    IDataObject smsobject = inMemoryCache_getDataObject("SMS_CONTACT");
    IDataObject voicecallobject = inMemoryCache_getDataObject("VOICE_CONTACT");

    try {
        if(emailobject != null){
            options [i] = "Email";
            i++;
        }
        if(smsobject != null){
            options [i] = "SMS";
            i++;
        }
        if(voicecallobject != null){
            options [i] = "VoiceCall";
            i++;
        }

    }catch (Exception e){

    }Spinner ivcoptions; ivcoptions = (Spinner)view.findViewById(R.id.spinner);
    ArrayAdapter<String> x = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_spinner_item,options);
    x.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    ivcoptions.setAdapter(x);

当且仅当Spinner包含1个项目时，我希望禁用微调器。我试过控制字符串数组的长度。但它没有帮助。

Answer 1

如果要禁用微调器项目单击事件，则需要更改适配器，但是如果您只想阻止微调器被单击，则只需在适配器上注册数据观察器：

final Spinner ivcoptions = (Spinner) findViewById(R.id.spinner);
final ArrayAdapter<String> x = new ArrayAdapter<>(this,
        android.R.layout.simple_spinner_item,options);
x.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

// Register a data observer
x.registerDataSetObserver(new DataSetObserver() {
    @Override
    public void onChanged() {
        super.onChanged();
        if (x.getCount() == 1) {
            ivcoptions.setEnabled(false);
        } else {
            ivcoptions.setEnabled(true);
        }
    }
});

// Set your adapter
ivcoptions.setAdapter(x);

如果Spinner仅包含1个项目，则单击禁用它

1 个答案: