android - 尝试在长按列表项时添加对话框，导致 StackOverflow 错误

Question

当我使用 longClick(标准点击打开项目详细信息)时，我想添加一个带有 2 个按钮的对话框 edit 和 remove(实际上只删除实现)

所以我尝试按照 this link 上的指南进行操作

我已经添加了

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

@Override
public boolean onContextItemSelected(MenuItem item) {
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item
            .getMenuInfo();

    switch (item.getItemId()) {
    case R.id.remove_item:

        final String[] listItem = getItemId();

        String idItemSel = listItem[info.position];

        delItem(idItemSel);
        adapter.notifyDataSetChanged();
        return true;
    }
    return false;
}

(其中 adapter 是我的列表适配器)

并且我已经以这种方式配置了监听器

list.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                .....

            }
        });


        list.setOnItemLongClickListener(new OnItemLongClickListener() {

            public boolean onItemLongClick(AdapterView<?> parent, View view,
                    int position, long id) {
                view.showContextMenu();
                return true;

            }
        });

一切正常，但是当我使用长按时，应用程序崩溃并出现此错误(在调用 view.showContextMenu(); 时):

08-02 18:13:12.079: E/AndroidRuntime(7780): FATAL EXCEPTION: main
08-02 18:13:12.079: E/AndroidRuntime(7780): java.lang.StackOverflowError
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1995)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onItemLongClick(MyItems.java:615)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:2001)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at android.view.View.showContextMenu(View.java:2520)
08-02 18:13:12.079: E/AndroidRuntime(7780):     at detailer.myapp.it.MyItems$6.onIt

当我长按列表项时，是否有任何解决问题的方法或查看简单上下文对话框的替代方法？

Answer 1

您似乎已经为 ContextMenu 注册了您的 ListView 并且设置了一个调用 showContextMenu() 的 OnItemLongClickListener，这创建了一个循环逻辑:

• OnItemLongClickListener 调用 ContextMenu，
• 上下文菜单调用 OnItemLongClickListener，
• OnItemLongClickListener 调用 ContextMenu，
• 上下文菜单调用 OnItemLongClickListener，
• 等直到发生堆栈溢出

解决这个问题:

首先，删除 OnItemLongClickListener，因为它与 ContextMenu 是多余的。

其次，仔细检查您如何使用上下文菜单。您已将菜单保存在布局文件夹中，如果您已经使用过 registerForContextMenu()，则无需调用 showContextMenu()。

---

要设置上下文菜单，只需将整个 ListView 传递给 registerForContextMenu():

registerForContextMenu(list);

您需要这样的 XML:

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/edit"
        android:title="@string/edit" />
    <item
        android:id="@+id/remove"
        android:title="@string/remove" />
</menu>

将其保存在新文件夹 res/menu 中，我将其命名为 context_menu.xml。

然后更改创建上下文菜单的方法:

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

现在，长按时每一行都会自动打开一个上下文菜单。

---

如果您在编辑和删除行方面需要帮助，请发布您用于创建 ListView 和适配器的代码。