onContextItemSelected不会被调用

问题描述

我做了一个简单的应用程序，只是带来了一个AlertDialog，有四个项目在列表中。我注册一个上下文菜单。当我长按的项目之一，我得到的上下文菜单。然后，我从上下文菜单中的一项，但onContextItemSelected不会被调用。任何帮助吗？谢谢你。

I have made a simple app that just brings up an AlertDialog, with four items in the list. I register a context menu. When I long click one of the items, I get the context menu. I then select an item from the context menu, but onContextItemSelected never gets called. Any help? Thanks.

test.java：

test.java:

package com.cerulean.tech.creations.test;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;

public class test extends Activity {

    private String[] files;
    AlertDialog alert;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        files = new String[4];
    }

    public void selectScheme(View v) {
        files[0] = "<New Scheme>";
        files[1] = "test1";
        files[2] = "test2";
        files[3] = "test3";
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setItems(files, new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int item) {
                   }});
        alert = builder.create();
        alert.show();
        registerForContextMenu(alert.getListView());
    }


    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
            ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.setHeaderTitle("Context Menu");
        menu.add(0, v.getId(), 0, "Delete");
        menu.add(0, v.getId(), 0, "Cancel");
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        return false;
    }
}

在main.xml中，我只是与Android定义的按钮：的onClick =selectScheme

In main.xml, I just a button defined with android:onClick="selectScheme"

推荐答案

这行之后：

    registerForContextMenu(alert.getListView());

输入：

    alert.getListView().setOnCreateContextMenuListener(this);

和代替onContextItemSelected（菜单项项目）函数中使用这样的：

And instead of onContextItemSelected(MenuItem item) function use this:

@Override
public boolean onMenuItemSelected(int featureId, MenuItem menuItem) {

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