動態地做了單選按鈕，但有時第一個單選按鈕無法選擇

Question

，同時選擇第一個單選按鈕，但它沒有顯示它的選中狀態。但是當我選擇其他選項時，如果我先選擇它，則顯示其選中狀態。

代碼： -

private void Displayradiobutton(String hatchfetchnumber) { 

    DBAdapter db = new DBAdapter(getApplicationContext()); 
    Log.i("test", "SETTING ADAPTER FOR DISPLAYRADIOBUTTON()"); 
    Cursor cr; 
    cr = db.gethatchno(hatchfetchnumber); 
    Log.i("test", "GET DATA FROM GETHATCHNO" + cr); 
    cr.moveToFirst(); 
    selecthatch = cr.getInt(0); 
    Log.i("test", "Step 2"); 
    if (selecthatch >= 12) { 
     down.setVisibility(View.VISIBLE); 
    } else { 
     down.setVisibility(View.INVISIBLE); 
    } 
    errortext.setVisibility(View.VISIBLE); 
    radiogroup.removeAllViews(); 

    for (int i = 1; i <= selecthatch; i++) { 

     RadioButton rdbtn = new RadioButton(this); 
     rdbtn.setId(i); 
     rdbtn.setPadding(15, 7, 15, 7); 
     rdbtn.setTextSize(20); 
     rdbtn.setText("Hatch " + i); 

     radiogroup.addView(rdbtn); 
     text.setEnabled(true); 
     if (selecthatch == 1) { 
      rdbtn.setChecked(true); 
      flag = 1; 
     } else { 
      flag = 0; 
     } 

    } 

} 

@Override 
public void onCheckedChanged(RadioGroup group, int checkedId) { 
    flag = 1; 
    errortext.setVisibility(View.INVISIBLE); 
    // selectedHatch = (RadioButton) findViewById(checkedId); 
}} 

Answer 1

試試這個...

變化

if (selecthatch == 1) { 
     rdbtn.setChecked(true); 
     flag = 1; 
    } else { 
     flag = 0; 
    } 

到

if (i == 1) { 
     rdbtn.setChecked(true); 
     flag = 1; 
    } else { 
     flag = 0; 
    }