删除最后添加的行（通过按钮btn1添加）上单击按钮btn2

Question

在下面的代码中按钮btn1正在添加一行（它工作正常）。如何在点击按钮btn2后删除最后添加的行？

btn1.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     TableRow row1 = new TableRow(create_form.this); 
     TextView txt1 = new TextView(create_form.this); 
     EditText edttxt1 = new EditText(create_form.this); 
     txt1.setText("Topic"); 
     TableRow row2 = new TableRow(create_form.this); 
     TextView txt2 = new TextView(create_form.this); 
     EditText edttxt2 = new EditText(create_form.this); 
     txt2.setText("Employee Name"); 
     row1.addView(txt1); 
     row1.addView(edttxt1); 
     row2.addView(txt2); 
     row2.addView(edttxt2); 
     t1.addView(row1); 
     t1.addView(row2); 
    } 
}); 

btn2.setOnClickListener(new View.OnClickListener() { 
    @Override public void onClick(View v) { 
     // What code to add here to delete the last added row? 
    } 
}); 

Answer 1

你可以试试这个。此代码可能会帮助你。

final TableRow tempTrRow1 = (TableRow) tlRow.getChildAt(tblMain.getChildCount()-1); 
     tblMain.removeView(tempTrRow1); 

Answer 2

TableRow lastRow = (TableRow)t1.getChildAt(t1.getChildCount() - 1); 
t1.removeView(lastRow);