Java Android:Listview长挂上下文菜单问题

在长时间按住listview条目并显示各种选项后，我试图打开上下文菜单。 但是，我不能，因为holding没有做/调用任何事情

这是我用来调用上下文菜单的代码：

@Override
public void onCreateContextMenu(ContextMenu menu, View v,
        ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);

    MenuItem delete = menu.add("delete");
    MenuItem edit = menu.add("edit");
    delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            return true;
        }
    });
    edit.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            return true;
        }
    });
}

@Override
public void onCreateContextMenu(ContextMenu menu, 
                View v, ContextMenuInfo menuInfo) {
    menu.add(0, 1, 0, "Edit");
    menu.add(0, 2, 1, "Rename");
    menu.add(0, 3, 2, "Delete");
    super.onCreateContextMenu(menu, v, menuInfo);
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    super.onContextItemSelected(item);

    if(item.getTitle().equals("Edit")) {
        //Edit code
    } else if(item.getTitle().equals("Rename")) {
        //Rename code
    } else if(item.getTitle().equals("Delete")) {
        //Delete code
    }
    return true;
};

public class MainActivity extends Activity {
    private List<CountElement> myElements = new ArrayList<CountElement>();
    ListView list;
    ArrayAdapter<CountElement> adapter;

    /*
    Users enters needed listview items, code not shown here. It works fine however - 
    all needed elements are displayed correctly.
    */

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        adapter = new MyListAdapter();
        list = (ListView) findViewById(R.id.listView1);
        list.setAdapter(adapter);
        registerForContextMenu(list);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        MenuItem delete = menu.add("delete");
        MenuItem edit = menu.add("edit");
        delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
            public boolean onMenuItemClick(MenuItem item) {
                return true;
            }
        });
        edit.setOnMenuItemClickListener(new OnMenuItemClickListener() {
            public boolean onMenuItemClick(MenuItem item) {
                return true;
            }
        });
    }

    private class MyListAdapter extends ArrayAdapter<CountElement> {
        //Custom adapter code here
    }
}

我也试过，但也没有用：

@Override
public void onCreateContextMenu(ContextMenu menu, View v,
        ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);

    MenuItem delete = menu.add("delete");
    MenuItem edit = menu.add("edit");
    delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            return true;
        }
    });
    edit.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            return true;
        }
    });
}

@Override
public void onCreateContextMenu(ContextMenu menu, 
                View v, ContextMenuInfo menuInfo) {
    menu.add(0, 1, 0, "Edit");
    menu.add(0, 2, 1, "Rename");
    menu.add(0, 3, 2, "Delete");
    super.onCreateContextMenu(menu, v, menuInfo);
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    super.onContextItemSelected(item);

    if(item.getTitle().equals("Edit")) {
        //Edit code
    } else if(item.getTitle().equals("Rename")) {
        //Rename code
    } else if(item.getTitle().equals("Delete")) {
        //Delete code
    }
    return true;
};

public class MainActivity extends Activity {
    private List<CountElement> myElements = new ArrayList<CountElement>();
    ListView list;
    ArrayAdapter<CountElement> adapter;

    /*
    Users enters needed listview items, code not shown here. It works fine however - 
    all needed elements are displayed correctly.
    */

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        adapter = new MyListAdapter();
        list = (ListView) findViewById(R.id.listView1);
        list.setAdapter(adapter);
        registerForContextMenu(list);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        MenuItem delete = menu.add("delete");
        MenuItem edit = menu.add("edit");
        delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
            public boolean onMenuItemClick(MenuItem item) {
                return true;
            }
        });
        edit.setOnMenuItemClickListener(new OnMenuItemClickListener() {
            public boolean onMenuItemClick(MenuItem item) {
                return true;
            }
        });
    }

    private class MyListAdapter extends ArrayAdapter<CountElement> {
        //Custom adapter code here
    }
}

main活动代码（仅相关部分）：

@Override
public void onCreateContextMenu(ContextMenu menu, View v,
        ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);

    MenuItem delete = menu.add("delete");
    MenuItem edit = menu.add("edit");
    delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            return true;
        }
    });
    edit.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        public boolean onMenuItemClick(MenuItem item) {
            return true;
        }
    });
}

@Override
public void onCreateContextMenu(ContextMenu menu, 
                View v, ContextMenuInfo menuInfo) {
    menu.add(0, 1, 0, "Edit");
    menu.add(0, 2, 1, "Rename");
    menu.add(0, 3, 2, "Delete");
    super.onCreateContextMenu(menu, v, menuInfo);
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    super.onContextItemSelected(item);

    if(item.getTitle().equals("Edit")) {
        //Edit code
    } else if(item.getTitle().equals("Rename")) {
        //Rename code
    } else if(item.getTitle().equals("Delete")) {
        //Delete code
    }
    return true;
};

public class MainActivity extends Activity {
    private List<CountElement> myElements = new ArrayList<CountElement>();
    ListView list;
    ArrayAdapter<CountElement> adapter;

    /*
    Users enters needed listview items, code not shown here. It works fine however - 
    all needed elements are displayed correctly.
    */

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        adapter = new MyListAdapter();
        list = (ListView) findViewById(R.id.listView1);
        list.setAdapter(adapter);
        registerForContextMenu(list);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);

        MenuItem delete = menu.add("delete");
        MenuItem edit = menu.add("edit");
        delete.setOnMenuItemClickListener(new OnMenuItemClickListener() {
            public boolean onMenuItemClick(MenuItem item) {
                return true;
            }
        });
        edit.setOnMenuItemClickListener(new OnMenuItemClickListener() {
            public boolean onMenuItemClick(MenuItem item) {
                return true;
            }
        });
    }

    private class MyListAdapter extends ArrayAdapter<CountElement> {
        //Custom adapter code here
    }
}

公共类MainActivity扩展活动{
private List myElements=new ArrayList（）；
列表视图列表；
阵列适配器；
/*
用户输入所需的listview项，此处未显示代码。它工作正常，但-
所有需要的元素都正确显示。
*/
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
适配器=新的MyListAdapter（）；
列表=（ListView）findViewById（R.id.listView1）；
list.setAdapter（适配器）；
registerForContextMenu（列表）；
}
@凌驾
public void onCreateContextMenu（ContextMenu，视图v，
上下文菜单信息（menuInfo）{
super.onCreateContextMenu（menu，v，menuInfo）；
MenuItem delete=菜单。添加（“删除”）；
MenuItem edit=菜单。添加（“编辑”）；
delete.setOnMenuItemClickListener（新的OnMenuItemClickListener（）{
公共布尔onMenuItemClick（菜单项）{
返回true；
}
});
edit.setOnMenuItemClickListener（新的OnMenuItemClickListener（）{
公共布尔onMenuItemClick（菜单项）{
返回true；
}
});
}
私有类MyListAdapter扩展了ArrayAdapter{
//这里有自定义适配器代码
}
}

---

非常感谢您的帮助。谢谢大家!

看看这个。您必须在“菜单”文件夹中创建自己的菜单，然后使用onCreateContextMenu（）方法对其进行充气。

好的，我已经找到了答案。在我的自定义listAdapter中，我在listView上添加了一个setOnItemLongClickListener。此setOnItemLongClickListener显示一个警报，其中包含我需要的选项。因此：

list.setOnItemLongClickListener(new OnItemLongClickListener() { //list is my listView

            @Override
            public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
                    final int pos, long id) {
            //Whatever you wanna do
            }
 });

list.setOnItemLongClickListener（新的OnItemLongClickListener（）{//list是我的listView
@凌驾
长单击（AdapterView arg0、视图arg1、，
最终整数位置，长id）{
//你想干什么都行
}
});

不应该将上下文菜单添加到适配器上的项目而不是listview？我不这样认为，因为registerForContextMenu需要一个视图参数。我可能错了。行也是视图：）我认为这里的问题是listview中的滚动事件正在拦截longpress事件。你知道如何应对吗？（即，使滚动条不会截获长按）。如果需要的话，我可以显示“MyListAdapter”代码。好的，我能够找到它。在我的自定义listAdapter中，我在listView上添加了一个setOnItemLongClickListener。此setOnItemLongClickListener显示一个警报，其中包含我需要的选项。谢谢你提供的帮助！