android - 一旦我在 Android 微调器上选择了一个项目，就不会设置任何文本。

Question

当我从微调器中选择任何项目时，没有设置任何文本。可能是什么错误？

    ArrayAdapter<String> pSelectAdapter =  new ArrayAdapter<String>(PCreate.this,android.R.layout.simple_spinner_item, pNames);
    pSelectAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    selectP.setAdapter(pSelectAdapter);



    selectP.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
            int arg2, long arg3) {
        // TODO Auto-generated method stub
        String nameSelected = pNames.get(arg2);
        pID = pMatch.get(nameSelected);
        p.setText(nameSelected);

        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub

        }



    });

Answer 1

我认为您在这里错过了创建 View 类的对象，请将此行与您的代码匹配，并进行此更改，这可能会对您有所帮助..

selectP.setOnItemSelectedListener(new View.OnItemSelectedListener() {


(new View.OnItemSelectedListener() instaed (new OnItemSelectedListener()