android - 从微调器 selectedItem 打开新活动

Question

这段代码有什么问题？我无法将所选项目查看到第二个视图？

public void onItemSelected(AdapterView<?> arg0, View arg1,int arg2
, long arg3){

int Index = arg0.getSelectedItemPosition();

                Toast.makeText(arg0.getContext(),
                        arg0.getItemAtPosition(Index).toString() + " View Selected",    Toast.LENGTH_SHORT).show();

                Intent newIntent = new Intent(GazaGuideSample.this, GuideCategories.class);
                newIntent.putExtra("text",arg0.getItemAtPosition(Index).toString());
                startActivity(newIntent);

            }

Answer 1

尝试这个：

mYourSpinner.setOnItemSelectedListener(new OnItemSelectedListener()     
        {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                    int pos, long id)
            {                           
                //int Index = parent.getSelectedItemPosition();pos - is SelectedPosition

        Toast.makeText(parent.getContext(),
                pos + " View Selected",    Toast.LENGTH_SHORT).show();

        Intent newIntent = new Intent(GazaGuideSample.this, GuideCategories.class);
        newIntent.putExtra("text",pos.toString());
        startActivity(newIntent);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0)
            {           
            }           
        });