Question

很抱歉这个长标题。

我有一个Android应用程序，显示带有5个TextView列的自定义listView。当用户单击一行时，我将布局更改为3个TextView和2个EditTexts。我有两个不同的布局文件。一切都工作正常，行布局正确更改，我可以单击EditText和输入值。但是，我希望2 EditText中的任何一个根据点击的内容自动获得焦点。我已经有了一个有效的代码。我的问题是，以编程方式请求requestFocus()似乎阻止了我用新视图更改行布局的部分。

以下是更改我的行布局的代码，它在没有requestFocus()行的情况下正常工作：

private void changeLayout(final View view){

    //get views from old row layout
    TextView textViewQuantity = (TextView)view.findViewById(R.id.qtyInput);
    TextView textViewDiscountReq = (TextView)view.findViewById(R.id.discInput);
    TextView textViewName = (TextView)view.findViewById(R.id.dialogItemName);
    TextView textViewPrice = (TextView)view.findViewById(R.id.price);
    TextView textViewDiscount = (TextView)view.findViewById(R.id.discount);

    //store values in strings
    String itemName = textViewName.getText().toString();
    String itemPrice = textViewPrice.getText().toString();
    String itemDiscount = textViewDiscount.getText().toString();
    String itemQty = textViewQuantity.getText().toString();
    String itemDisc = textViewDiscountReq.getText().toString();

    //set the view to gone
    textViewQuantity.setVisibility(View.GONE);
    textViewDiscountReq.setVisibility(View.GONE);
    textViewName.setVisibility(View.GONE);
    textViewPrice.setVisibility(View.GONE);
    textViewDiscount.setVisibility(View.GONE);

    //get the old layout
    LinearLayout ll_inflate = (LinearLayout)view.findViewById(R.id.search_result_layout);   

    //get the inflate/new view
    View child = getLayoutInflater().inflate(R.layout.search_result_inflate, null);

    //get the views in the new view, populate them
    TextView newName = (TextView)child.findViewById(R.id.dialogItemName);
    newName.setText(itemName);

    TextView newDiscount = (TextView)child.findViewById(R.id.discount);
    newDiscount.setText(itemDiscount);

    TextView newPrice = (TextView)child.findViewById(R.id.price);
    newPrice.setText(itemPrice);

    qtyIn = (EditText)child.findViewById(R.id.qtyInputSearchResult);
    qtyIn.setText(itemQty);
    qtyIn.setFilters(new InputFilter[] {filter});

    discIn = (EditText)child.findViewById(R.id.discInputSearchResult);
    discIn.setText(itemDisc);

    //show new layout
    ll_inflate.removeAllViews();
    ll_inflate.removeAllViewsInLayout();
    ll_inflate.addView(child);

    //request focus here
    if(focusTarget == 1){
        Log.d("hello", "focus target is 1 " );
        qtyIn.setFocusable(true);
        qtyIn.setFocusableInTouchMode(true);
        qtyIn.requestFocus();
    }
    else if(focusTarget == 2){
        Log.d("hello", "focus target is 2 " );
        discIn.requestFocus();
    }

    Log.d("hello", "focus state qtyIn = " + qtyIn.isFocused());
    Log.d("hello", "focus state discIn = " + discIn.isFocused());
}

有趣的是，Log显示了正确的值，它根据我的需要说明了正确的焦点状态。但是，ll_inflate.addView(child);行根本不起作用！

有谁知道这里发生了什么？我真的很困惑，为什么布局没有改变，但在执行.addView()行后行。另一个奇怪的事情是requestFocus();如何阻止视图的变化。

非常感谢任何帮助。感谢。

Answer 1

你这样做是错误的。您应该在列表中有两种类型的视图，一种用于显示数据，另一种用于编辑它。首先设置视图类型计数

final int TYPE_EDIT = 0，TYPE_VIEW = 1; // EDIT 7/9/016 类型需要从0开始

public int getViewTypeCount (){
 return 2;
}
public int getItemViewType (int position){
  //return type as needed. simple if you add int for this in data model
}

在 getView

内

public View getView (int position, View convertView, ViewGroup parent){
    int type = getItemViewType ();
    if(null==convertView){
         LayoutInflater inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if(type ==TYPE_EDIT){
            convertView = inflater.inflate(R.layout.rowEditlayout, parent, false);
        }else{
            convertView = inflater.inflate(R.layout.rowlayout, parent, false);
        }
    }   
}

点击编辑按钮上的列表数据更改并在适配器上调用 notifydatasetchanged

Android - 在其edittext子项上请求焦点时，以编程方式更改自定义listView行的行布局失败

1 个答案: