删除项目从列表视图中使用浮动上下文菜单 [英] Deleting item from listview using floating context menu

问题描述

已经有使用onItemLongClick方法来删除一个列表视图项目的能力，但我宁愿使用一个浮动上下文菜单来做到这一点。

Already had the ability to delete a listview item using an onItemLongClick method but I'd rather use a floating context menu to do this.

下面是code我目前有浮动上下文菜单。我跟着这让我将它设置，然后试图寻找一个类似的例子，我在做什么，但没有找到任何合适的文档。

Below is the code I currently have for the floating context menu. I followed the documentation which helped me set it up and then tried to search for a similar example to what I'm doing but couldn't find anything appropriate.

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
                                    ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.payments_context, menu);
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
        switch (item.getItemId()) {
            case R.id.edit:

                return true;
            case R.id.delete:

                return true;
            default:
                return super.onContextItemSelected(item);
        }
    }

这是在code，我不得不删除我的列表视图中的项目之前，我决定改用浮动上下文菜单

This is the code I had to delete the items in my listview before I decided to switch to a floating context menu

public boolean onItemLongClick (AdapterView<?> parent, View view, int position, long id)
        {
            String temp = paymentTitle.get(position).toString();
            paymentTitle.remove(position);
            paymentDate.remove(position);
            reminderDate.remove(position);
            reminderTime.remove(position);
            paymentVal.remove(position);

            mDatabase = new MOSDatabase(this);

            SQLiteDatabase readableDB = mDatabase.getWritableDatabase();
            readableDB.delete("PaymentTable", "PTITLE=?",
                    new String[]{temp});

            aa.notifyDataSetChanged();

            return false;
        }

如果有人能告诉我如何得到这个浮动上下文菜单中的工作，我会非常感激。我没有做过，只是还没有编辑的方法，这是我必须做我得到这个完成之后。

If someone could advise me on how to get this floating context menu working I'd be really grateful. I don't have the edit method done just yet, it's what I have to do after I get this completed.

推荐答案

如果我理解正确的话，您可以通过以下code点击位置获得该项目的在ListView索引：

If I understand correctly, you can get the index of the item in the ListView at the click position by using the following code:

AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
int position = info.position;

使用位置，你可以重复使用 onItemLongClick pretty的的code多的是：

Using position, you can reuse the code of onItemLongClick pretty much as is:

@Override
public boolean onContextItemSelected(MenuItem item) {
    AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
    int position = info.position;
    switch (item.getItemId()) {
        case R.id.edit:

            return true;
        case R.id.delete: {
            String temp = paymentTitle.get(position).toString();
            paymentTitle.remove(position);
            paymentDate.remove(position);
            reminderDate.remove(position);
            reminderTime.remove(position);
            paymentVal.remove(position);

            mDatabase = new MOSDatabase(this);

            SQLiteDatabase readableDB = mDatabase.getWritableDatabase();
            readableDB.delete("PaymentTable", "PTITLE=?",
                    new String[]{temp});

            aa.notifyDataSetChanged();
            }
            return true;
        default:
            return super.onContextItemSelected(item);
    }
}

您可能想看看答案这个的问题。

You might want to look at the answer to this question.

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