在Android中從自定義ListView獲取數據

-2

在自定義ListView中，我想將所有數據發送到某處。但我無法獲取相應的行數據。
這裏是我的代碼..在Android中從自定義ListView獲取數據

import android.widget.EditText; 
import android.widget.RadioButton; 
import android.widget.RadioGroup; 

public class Question { 
    int current = NONE; // hold the answer picked by the user, initial is NONE(see below) 
    public static final int NONE = 1000; // No answer selected 
    public static final int ANSWER_YES_SELECTED = 0; // Yes answer selected 
    public static final int ANSWER_NO_SELECTED = 1; // Yes answer selected 

    public int getCurrent() { 
     return current; 
    } 

    public void setCurrent(int current) { 
     this.current = current; 
    } 

    private String question; 
    private RadioButton radioYes; 
    private RadioButton radioNo; 
    private EditText editResponse; 
    RadioGroup radio_group; 
    private Question(){ 
     super(); 

    } 

    public Question(String title,RadioButton r1,RadioButton r2, EditText e1,RadioGroup radio_group) { 
     super(); 
     this.radio_group=radio_group; 
     this.question = title; 
     this.radioYes=r1; 
     this.radioNo=r2; 
     this.editResponse=e1; 



    } 

    public Question(String title,RadioButton r1,RadioButton r2, EditText e1) { 
     super(); 

     this.question = title; 
     this.radioYes=r1; 
     this.radioNo=r2; 
     this.editResponse=e1; 
    } 

    public Question (String q){ 
     super(); 
     this.question=q; 


    } 

    public String getQuestion() { 
     return question; 
    } 

    public void setQuestion(String question) { 
     this.question = question; 
    } 

    public RadioButton getRadioYes() { 
     return radioYes; 
    } 

    public void setRadioYes(RadioButton radioYes) { 
     this.radioYes = radioYes; 
    } 

    public RadioButton getRadioNo() { 
     return radioNo; 
    } 

    public void setRadioNo(RadioButton radioNo) { 
     this.radioNo = radioNo; 
    } 

    public EditText getEditResponse() { 
     return editResponse; 
    } 

    public void setEditResponse(EditText editResponse) { 
     this.editResponse = editResponse; 
    } 

    public RadioGroup getRadio_group() { 
     return radio_group; 
    } 

    public void setRadio_group(RadioGroup radio_group) { 
     this.radio_group = radio_group; 
    } 

    @Override 
    public String toString() { 
     return "Question [question=" + question + ", radioYes=" + radioYes 
       + ", radioNo=" + radioNo + ", editResponse=" + editResponse.getText() 
       + ", radio_group=" + radio_group + "]"; 
    } 
}

我AdapterClass

public class QuestionAdapter extends ArrayAdapter<Question>{ 

    Context context; 
    int layoutResourceId;  
    Question[] data = null; 
    final String[] text; 
    int[] chkId=null; 


    public QuestionAdapter(Context context, int layoutResourceId, Question[] data) { 
     super(context, layoutResourceId, data); 
     this.layoutResourceId = layoutResourceId; 
     this.context = context; 
     this.data = data; 
     text=new String[data.length]; 
     chkId=new int[data.length]; 
     for (String s: text) { 
      s=""; 

     } 



    } 

    @SuppressLint("NewApi") 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     final HashMap<Integer, Integer> checkeddMap= new HashMap<Integer, Integer>(); 

     View row = convertView; 
     final QuestionHolder holder; 

     final int pos=position; 


     // System.out.println("Position is "+position); 

     if(row == null) 
     { 
      holder = new QuestionHolder(); 

      LayoutInflater inflater = ((Activity)context).getLayoutInflater();   
      row = inflater.inflate(layoutResourceId, parent, false); 

      holder.txtquestion = (TextView)row.findViewById(R.id.txtquestion); 
      holder.radioYes = (RadioButton)row.findViewById(R.id.radioYes); 
      holder.radioNo= (RadioButton)row.findViewById(R.id.radioNo); 
      holder.editResponse=(EditText)row.findViewById(R.id.editResponse); 
      holder.radio_group=(RadioGroup)row.findViewById(R.id.radio_group); 
      //holder.editResponse.setText(data[position].getEditResponse().toString()); 


      row.setTag(holder); 



     } 
     else 

     { 
      holder = (QuestionHolder)row.getTag(); 
     } 

     Question question = data[position]; 
     holder.txtquestion.setText(question.getQuestion()); 


     holder.editResponse.setOnFocusChangeListener(new OnFocusChangeListener() { 

      public void onFocusChange(View v, boolean hasFocus) { 
       // TODO Auto-generated method stub 
       text[pos] =((EditText)v).getText().toString(); 
      } 
     }); 

     holder.editResponse.setText(text[pos]); 

     // System.out.println(position+"Position"); 



     holder.radio_group.setOnFocusChangeListener(new OnFocusChangeListener() { 

      public void onFocusChange(View v, boolean hasFocus) { 
       // TODO Auto-generated method stub 


      } 
     }); 


     holder.radio_group.setOnCheckedChangeListener(new OnCheckedChangeListener() { 

      public void onCheckedChanged(RadioGroup arg0, int checkedId) { 
       // TODO Auto-generated method stub 
       System.out.println("In OnCheckedChaned Listener."); 
       arg0.setTag(pos); 
       Question element=data[pos]; 
       // System.out.println("Tag of radio Group= "+(Integer)arg0.getTag()); 
       switch (checkedId) { 

       case R.id.radioYes: 
        element.current=Question.ANSWER_YES_SELECTED; 
        checkeddMap.put(pos, data[pos].current);  
        break; 
       case R.id.radioNo: 
        element.current=Question.ANSWER_NO_SELECTED; 
        checkeddMap.put(pos, data[pos].current);  

        break; 
       case -1: 
        element.current=Question.NONE; 

       } 
      } 
     }); 






     if (data[pos].current != Question.NONE) { 
      RadioButton r = (RadioButton) holder.radio_group.getChildAt(data[position].current); 
      r.setChecked(true); 
     } else { 
      holder.radio_group.clearCheck(); // This is required because although the Question could have the current 
      // position to NONE you could be dealing with a previous row where 
      // the user already picked an answer. 

     } 




     return row; 

    } 


    static class QuestionHolder 
    { 
     TextView txtquestion; 
     RadioButton radioYes; 
     RadioButton radioNo; 
     EditText editResponse; 
     RadioGroup radio_group; 
    } 

}

而且我MainActivity.java

public class MainActivity extends Activity { 
    Question myQue; 
    private ListView listView1; 
    private Button btn; 
    private String[] str={"First Question","Second Question","Third Question","Fourth Question","Fifth Question","SIxth Question","Seventh Q","Eightth Q","Nine th Q", "Tenth Q" }; 
    ArrayList< Question> arrayList; 
    @SuppressLint("NewApi") 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 

     setContentView(R.layout.a_securitylist); 
     RadioButton r1 = null; 
     RadioButton r2 = null; 
     RadioGroup radio_group = null; 
     EditText e1 = null; 
     Button btn=(Button) findViewById(R.id.submit); 


     EditText e2;  
     RadioGroup rg= new RadioGroup(getApplicationContext()); 
     rg.setOrientation(RadioGroup.HORIZONTAL); 
     RadioButton rYes=new RadioButton(getApplicationContext()); 
     RadioButton rNo=new RadioButton(getApplicationContext()); 
     rYes.setHeight(10); 
     rYes.setWidth(10); 
     EditText etext= new EditText(getApplicationContext()); 
     etext.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, 10)); 

     RadioGroup rg1= new RadioGroup(getApplicationContext()); 
     int p=0; 
     final Question weather_data[] = new Question[] 
       { 
       new Question((p+1)+"."+str[0], r1, r2, etext, radio_group), 
       new Question((p+2)+"."+str[01], r1, r2, etext, radio_group), 
       new Question((p+3)+"."+str[02], r1, r2, etext, radio_group), 
       new Question((p+4)+"."+str[03], r1, r2, etext, radio_group), 
       new Question((p+5)+"."+str[04], r1, r2, etext, radio_group), 
       new Question((p+6)+"."+str[05], r1, r2, etext, radio_group), 
       new Question((p+6)+"."+str[06], r1, r2, etext, radio_group), 

       new Question((p+7)+"."+str[07], r1, r2, etext, radio_group), 

       new Question((p+8)+"."+str[8], r1, r2, etext, radio_group), 

       new Question((p+9)+"."+str[9], r1, r2, etext, radio_group) 




       }; 

     QuestionAdapter adapter = new QuestionAdapter(MainActivity.this, R.layout.listview_item_row, weather_data); 


     listView1 = (ListView)findViewById(R.id.securityListView); 
     listView1.setClickable(false); 
     View header = (View)getLayoutInflater().inflate(R.layout.listview_header_row, null); 
     listView1.addHeaderView(header); 
     View footer = (View)getLayoutInflater().inflate(R.layout.listview_footer_row, null); 
     listView1.addFooterView(footer); 
     Button btnSubmit=(Button)(footer.findViewById(R.id.submit)); 
     listView1.setAdapter(adapter); 
     //adapter.notifyDataSetChanged(); 

     System.out.println(listView1.getParent().toString()); 




     btnSubmit.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       System.out.println("In Footer OnClick"); 
       Toast.makeText(MainActivity.this,"Footer Toast", Toast.LENGTH_LONG).show(); 

       System.out.println(listView1.getChildCount()); // Child count is 4. but my list view has 10 items. 

       System.out.println(listView1.getChildAt(2).findViewById(R.id.radio_group)); 

       // Working 
       //  System.out.println("Cheked Radio button at 0"+((RadioGroup)listView1.getChildAt(0).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       //  System.out.println("Cheked Radio button at 01"+((RadioGroup)listView1.getChildAt(1).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       //  System.out.println("Cheked Radio button at 02"+((RadioGroup)listView1.getChildAt(2).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 

       // Not Working 
       // System.out.println("Cheked Radio button at 03"+((RadioGroup)listView1.getChildAt(3).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       // System.out.println("Cheked Radio button at 04"+((RadioGroup)listView1.getChildAt(4).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       // System.out.println("Cheked Radio button at 05"+((RadioGroup)listView1.getChildAt(5).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       // System.out.println("Cheked Radio button at 06"+((RadioGroup)listView1.getChildAt(6).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       // System.out.println("Cheked Radio button at 07"+((RadioGroup)listView1.getChildAt(7).findViewById(R.id.radio_group)).getCheckedRadioButtonId()); 
       //System.out.println(((Question)(listView1.getItemAtPosition(0))).radio_group.toString()); 

      } 
     }); 

    }    

}

我想所有的數據將得到onclicklister btnSumbit的...

來源

2013-05-17 Mr.India

全部數據表示什麼？ – Riser

你想得到什麼數據？您的列表視圖數據已存儲在陣列中。 –

我想獲取checkRadiobutton ID和編輯文本中的文本。但無法找到方法。 –

在QuestionAdap中重寫getItem（）方法之三

@Override 
public Question getItem(int position) {  
     return data[position]; 
}

如果你沒有適配器然後用

adapter = listview1.getAdapter();

現在讓你更新的適配器，通過使用

Question question1 = adapter.getItem(1); 
Question question2 = adapter.getItem(2);

讓您的數據和u還可以得到radiogroups使用：

RadioGroup radio1 = question1.getRadio_group();

來源

2013-05-17 12:52:05

我以這種方式嘗試..但獲得nullpointerexcption。 –

getting question1 = null –

我得到答案。簡單地覆蓋適配器類下面的方法..

public String[] getText() { 
     return text; 
    } 
    public int[] getChkId() { 
     return chkId; 
    }

從你的活動，你可以打電話給他們原樣

adapter.getText(); 
adapter.getchkId();

將返回數組ID字符串和ID。那太簡單了。謝謝大家。

來源

2013-05-18 07:31:13

在Android中從自定義ListView獲取數據

回答

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