Question

在此代码中导致NullPointerException的原因是什么？不幸的是已经停止了

ArrayAdapter spinneradapter = ArrayAdapter.createFromResource(this,
            R.array.Repeating, android.R.layout.simple_spinner_item);
    spinner.setAdapter(spinneradapter);

    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent, View view,
                int position, long id) {
            // TODO Auto-generated method stub

                TextView myText = (TextView) view;
                Toast.makeText(CreateActivity.this,
                        "you selected" + myText.getText(), 1000).show();

        }

Answer 1

我认为问题出在这条线上。我不能在没有日志的情况下指出任何东西但是给它一个镜头

TextView myText = (TextView) view;

未引用任何布局元素

尝试

TextView myText = (TextView) findViewById(R.id.view);//where view is your textview

什么原因导致此代码中出现NullPointerException？

1 个答案: