小编Kha*_*ssa的帖子

我正在尝试获取微调器的位置(数字),当选择在另一个Activity中使用它时,每次将根据所选项目显示不同的地图.当我运行应用程序时它崩溃了.这是第一个活动代码:

public class TestProjectActivity extends Activity {
    public Spinner spinner1;
    public Integer number;
    private Button valideButton;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        MySpinner();
        valide_button();

    }

    public void MySpinner() {

        final Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);

        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
                this, R.array.num, android.R.layout.simple_spinner_item);
                                      adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner1.setAdapter(adapter);

        spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {

            public void onItemSelected(AdapterView<?> parentView,
                    View selectedItemView, int position, long id) {
                // Object item = parentView.getItemAtPosition(position);

                TestProjectActivity.this.number = spinner1
                        .getSelectedItemPosition() + 1;

            }

            public void onNothingSelected(AdapterView<?> arg0) {// do nothing
            }

        }); …