如何动态地删除TableLayout行 [英] How to delete a row in TableLayout dynamically

问题描述

我有一个TableLayout为我添加的行dynamically.In每一行的有2个因素，其中之一就是TextView的另一个Button.When我按一下按钮是present成一排，该行应deleted.How可以这样在Android中做了什么？如何找到的rowid以及如何动态删除一行。 谁能帮助我在设法解决这个问题。

I am having a TableLayout for which I added rows dynamically.In each of the row there are 2 elements of which one is TextView other is Button.When I click the button that is present in a row,that row should be deleted.How can this be done in Android ? How to find rowid and how to delete a row dynamically. can anyone help me in sorting out this issue.

在此先感谢，

推荐答案

您可以在您添加行指定的标签或标识的。然后，只需使用该标记/ ID删除该行。

You can assign tags or id's when you adding a row. Then just use that tag/id to delete that row.

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

// initialization, etc.

创建将被添加到TableLayout，与TextView的和按钮通过tablerow然后调用元素 addDeleteClick（yourButton，uniqueTag）将其添加到TableLayout前。

Create element that will be added to the TableLayout, a TableRow with the TextView and the Button then call addDeleteClick(yourButton, uniqueTag) before adding it to the TableLayout.

// 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();
}

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