Android:指定的孩子已经有父母问题

Question

我遇到此错误。

java.lang.illegalstateException：指定的孩子已经有一个 父母。您必须首先在孩子的父母上调用removeview（）。

来自以下代码：

myActivity.java

public void displayTable(){//This is method to display table
        List<Integer> lstIds = helper.getAllTimeOffID(); // it will fetch number of records
        for(int id:lstIds){
            //for each record i am generationg single row(LinearLayout[horizontal])
            TimeOff timeOff = helper.getTimeOffInfo(id);//this is model class for each record
            lstAllTimeOff.add(timeOff); // adding to list for future purpose(no need for this mithod)
            int pxs = this.getApplicationContext().getResources().getDimensionPixelSize(R.dimen.generalTextSize);
            //////////////////////////////////////////
            LinearLayout viewTimeOffDetailsArea = (LinearLayout) this.findViewById(R.id.viewTimeOffDetailsArea);
            LinearLayout viewSingleRow = new LinearLayout(getApplicationContext()); //new row generating
            LayoutParams singleRowParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
            viewSingleRow.setOrientation(LinearLayout.HORIZONTAL);
            TextView lblSingleRowDetail = new TextView(getApplicationContext());
            TextView lblSingleRowDate = new TextView(getApplicationContext());
            TextView lblSingleRowHours = new TextView(getApplicationContext());
            ImageButton imgbtnSingleRowAction = new ImageButton(getApplicationContext());
            ///////////////////////////////////////////////////////////////////////
            viewSingleRow.removeAllViews();
            lblSingleRowDetail.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 3f));
            lblSingleRowDate.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 2f));
            lblSingleRowHours.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1f));
            lblSingleRowDetail.setTextSize(pxs);
            lblSingleRowDate.setTextSize(pxs);
            lblSingleRowHours.setTextSize(pxs);
            lblSingleRowDetail.setText(timeOff.getTimeOffDetail());
            lblSingleRowDate.setText(timeOff.getTimeOffDate());
            lblSingleRowHours.setText(timeOff.getTimeOffHours());
            imgbtnSingleRowAction.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
            imgbtnSingleRowAction.setImageResource(R.drawable.delete1);
            imgbtnSingleRowAction.setId(timeOff.getId());
            viewSingleRow.addView(lblSingleRowDetail);//add label
            viewSingleRow.addView(lblSingleRowDate);//add label
            viewSingleRow.addView(lblSingleRowHours);//add label
            viewSingleRow.addView(imgbtnSingleRowAction);//add image button
            //add whole row into vertical Linear Layout which is in Scroll View
            viewTimeOffDetailsArea.addView(lblSingleRowDetail); //on this line i am getting Error
        }

这是我试图一个一个a行的XML文件
my_xml.xml

  <ScrollView
        android:id="@+id/scrollDiv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/viewTimeOffDetailsFooter"
        android:layout_below="@id/lowerSeparator" >
        <LinearLayout
            android:id="@+id/viewTimeOffDetailsArea"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

        </LinearLayout>
    </ScrollView>

Answer 1

您正在调用viewSingleRow.addView(lblSingleRowDetail);，然后viewTimeOffDetailsArea.addView(lblSingleRowDetail);会导致异常。您只能将视图添加到一个父母。