活动的LayoutInflater已经安装了Factory，因此我们无法安装AppCompat的 [英] The Activity's LayoutInflater already has a Factory installed so we can not install AppCompat's

问题描述

我在我的应用程序中使用AppCompat库(com.android.support:appcompat-v7:22.1.0).我在一个片段中创建了一个ActionBar.当我单击菜单项时，它显示一个警告对话框".这是我的代码:

I'm using AppCompat library (com.android.support:appcompat-v7:22.1.0) in my app. I created an ActionBar in a fragment. When I click in a menu item it shows an Alert Dialog. Here is my code:

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
        case R.id.action_new:
            showFilterDialog();
            return true;
        case R.id.action_send:
            new sendInventoryTask().execute();
            return true;           
        default:
            return super.onOptionsItemSelected(item);
    }
}

还有我的showInventoryDialog方法:

And my showInventoryDialog method:

private void showFilterInventoryDialog() {
    AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());

    LayoutInflater inflater= getActivity().getLayoutInflater();

    View v = inflater.inflate(R.layout.dialog_filter_inventory,null);
    alert.setView(v);
    alert.setTitle(getResources().getString(R.string.filters));
    alert.setPositiveButton(getResources().getString(R.string.filter), new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            // TODO
        }

    });

    alert.setNegativeButton(getResources().getString(R.string.cancel), null);
    alert.show();
}

一切正常，但是当我单击菜单项时，logcat向我显示错误:

Everything works fine, but when I click on menu item, the logcat shows me an error:

I/AppCompatDelegate:活动的LayoutInflater已经安装了工厂，因此我们无法安装AppCompat的

I/AppCompatDelegate﹕ The Activity's LayoutInflater already has a Factory installed so we can not install AppCompat's

如何解决这个问题?

推荐答案

在这种情况下，您需要使用主题上下文，即代替

You are required to use the themed context in this case, i.e. instead of

新版AlertDialog.Builder(getActivity());

new AlertDialog.Builder(getActivity());

你必须做

new AlertDialog.Builder(getSupportActionBar().getThemedContext());

此外，您还需要遵循此处提供的父主题和windowActionBar提示-

Besides, you also need to follow the parent theme and windowActionBar tip given here - support.v7.app.AlertDialog throws NullPointerException on dismiss

这篇关于活动的LayoutInflater已经安装了Factory，因此我们无法安装AppCompat的的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！