Question

我有一个动态添加行的TableLayout。在每行中有2个元素，其中一个是TextView，另一个是Button。当我单击行中存在的按钮时，该行应该被删除如何在Android中完成？如何查找rowid以及如何动态删除行。任何人都可以帮我解决这个问题。

先谢谢，

Answer 1

尝试这种方法：

    TableRow tableRow;
    TextView tv;
    Button button;
    //...
    tableRow.addView(tv)
    tableRow.addView(button);


    //somewhere where you want to delete
    ViewGroup parent=button.getParent();
    if(parent instanceof TableRow)
        //do deleting task

Answer 2

试试这个：

public void onClick(View v) {
      // TODO Auto-generated method stub

      TableRow t = (TableRow) v.getParent();
      TextView firstTextView = (TextView) t.getChildAt(0);
      code = firstTextView.getText().toString();

      System.out.println("code>>>>>>" + code);

      View row = (View) v.getParent();
      // container contains all the rows, you could keep a
      // variable somewhere else to the container which you
      // can refer to here
      ViewGroup container = ((ViewGroup) row.getParent());
      // delete the row and invalidate your view so it gets
      // redrawn
      container.removeView(row);
      container.invalidate();
}

Answer 3

添加行时，您可以指定标签或ID。然后只需使用该标记/ id删除该行。

TableLayout table;  // global access, probably initialized in onCreate()

// initialization, etc.

创建将添加到TableLayout的元素，使用TextView和Button的TableRow然后在将其添加到TableLayout之前调用addDeleteClick(yourButton, uniqueTag)。

// example of adding a text view and a button the the TableLayout
void addToTableLayout(String text, String uniqueTag) {
    TableRow tr = new TableRow(yourActivity);
    // set the unique tag that will be used when deleting this row
    tr.setTag(uniqueTag);
    // do what you need with the button and textview
    TextView tv = new TextView(yourActivity);
    tv.setText(text);
    Button bt = new Button(yourActivity);
    // add delete click capability to the button
    addDeleteClick(bt, uniqueTag);
    table.addView(tr, new TableLayout.LayoutParams(
                LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
}

// Adds the delete on click capability to a button 
// to delete a row from TableLayout based on its tag
void addDeleteClick(Button bt, final String tag) {
    bt.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            Log.d("TableLayout", " deleting row with tag " + tag);
            deleteRow(tag);
        }

    });
}

// delete a row from TableLayout based on its tag
void deleteRow(String tag) {
    View removedRow = table.findViewWithTag(tag);
    table.removeView(removedRow);
    table.invalidate();
}

如何动态删除TableLayout中的行

3 个答案: