如何获得由此引发了上下文菜单的按钮来查看？ [英] How to get the Button view which triggered a Context Menu?

问题描述

我创建一个快捷菜单按钮动态的看法。当选择了上下文菜单项，我想以检索由此引发的上下文菜单的按钮来查看。

I'm creating dynamically Button views with a context menu. When a context menu item is selected, I would like to retrive the Button view which triggered the context menu.

这是我如何创建按钮：

// Create a new button
Button buttonView = new Button(this);
// Set button text
buttonView.setText("MyButton");
// Set on click listener
buttonView.setOnClickListener( new ButtonClickHandler() );
// Register for context menu
registerForContextMenu(buttonView);

这是我如何创建上下文菜单：

This is how I create the context menu :

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

这就是我如何处理所选项目：

And this is how I handle selected items :

public boolean onContextItemSelected(MenuItem item) {

    // Get extra menu information about the item selected   
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();

    // 
    switch (item.getItemId()) {
    case R.id.delete:

        // Retrieve selected button text
        String btnText = ((Button) info.targetView).getText().toString();
        // etc...
        return true;
    default:
        return super.onContextItemSelected(item);
    }
}

问题是，（AdapterContextMenuInfo）item.getMenuInfo（）返回空值，即有关于项目的任何额外信息。我期待得到info.targetView的按钮来查看。显然，这仅适用于ListView中，因为适配器视图需要填充此额外信息的照顾。

The issue is that "(AdapterContextMenuInfo) item.getMenuInfo()" returns null, i.e. there is no extra information about the item. I was expecting to get the Button view in info.targetView. Apparently this works only for ListView, because AdapterView takes care of populating this extra info.

我想我应该做一些onCreateContextMenu这个信息连接。样本code附上这个信息将是非常欢迎的。

I guess I should do something in "onCreateContextMenu" to attach this information. A sample code to attach this information would be very much welcomed.

感谢

推荐答案

这用于创建上下文菜单中的按钮是查看参数传递到 onCreateContextMenu 。

The Button that was used to create the context menu is the View parameter passed into onCreateContextMenu.

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