Question

这是我的代码：

它正在尝试在微调器中添加更多项目，同时在微调器项列表中选择一个选项，使用弹出窗口... 但是在运行时单击“添加”时出现错误（强制关闭）...

    s1 = (Spinner) findViewById(R.id.spinner);

    final ArrayAdapter<String> adapter  = new ArrayAdapter<String>(
            this,android.R.layout.simple_spinner_item,Items);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    s1.setAdapter(adapter);
    s1.setOnItemSelectedListener(new OnItemSelectedListener()
    {
        public void onItemSelected(AdapterView<?> arg0, 
        View arg1, int arg2, long arg3) 
        {
 if(index==2)
            {
                    final Dialog dialog=new Dialog(Starttracker.this);
                    dialog.setContentView(R.layout.popup);
                    dialog.setTitle("Enter The Item");
                    dialog.setCanceledOnTouchOutside(true);

                    final EditText filename=(EditText)dialog.findViewById(R.id.filename);
                    filename.setText("");

                    Button d_ok=(Button)dialog.findViewById(R.id.d_ok);
                    Button d_cancel=(Button)dialog.findViewById(R.id.d_cancel);
                    d_ok.setOnTouchListener(new OnTouchListener(){
                        public boolean onTouch(View v,MotionEvent me){

                              String textHolder = "" + filename.getText();
                                 adapter.add(textHolder);
                                 s1.setAdapter(adapter);
                                 dialog.dismiss();
                                 return false;
                        }
                    });
                    d_cancel.setOnTouchListener(new OnTouchListener(){
                        public boolean onTouch(View v,MotionEvent me){
                            dialog.dismiss();
                            return false;
                        }
                    });
                    dialog.show();

                    return;
                 }

请帮助我...谢谢你的朋友

Answer 1

我不确定它是否有效但尝试

s1.notifyDataSetChanged();

而不是

s1.setAdapter(adapter);

Answer 2

回答我的问题：

 d_ok.setOnClickListener(new OnClickListener(){

                public void onClick(View arg0) {
                    // TODO Auto-generated method stub

                    String textHolder = filename.getText().toString();

                    dialog.dismiss();

                    Items.add(textHolder);

                    //  s1.setAdapter(adapter);

                    // notifyDataSetChanged();

                }
            });

非常感谢

添加新项目时微调器出错

这是我的代码：

2 个答案: