平板电脑用户界面无法在我的应用上运行

我正在尝试创建一个应用程序，它有两个不同的平板电脑和手机用户界面，我正在使用片段来实现这一点。我为每个平板电脑和手机布局创建了两个单独的xml文件，两者都称为activity_main.xml，手机布局放在res / layout文件夹中，平板电脑布局放在res / layout-sw600dp文件夹中。

I am trying to create an app which has two different UIs for tablets and phones, and I'm using fragments to implement this. I have created two separate xml files for each tablet and phone layout and both are called activity_main.xml, with the phone layout being placed in the res/layout folder and the tablet layout being placed in the res/layout-sw600dp folder.

然而，当我尝试在Nexus 10模拟器（Android Studio）上运行我的应用程序时，它会自动转到默认的手机布局。该应用程序不会崩溃或任何东西，但它只是在手机用户界面中运行，当它应该在平板电脑用户界面运行时。我不知道这个错误的来源是什么，所以任何帮助都会受到赞赏。

However when I try to run my app on a Nexus 10 emulator(Android Studio), it automatically goes to the default phone layout. The app doesn't crash or anything but it just runs in the phone UI when it's supposed to run in tablet UI. I dont know what the source of this error could be and so any help would be appreciated.

这是一个更新，我尝试将文件夹重命名为res / layout-large- mdpi但仍然没有发现变化。是否有可能与模拟器有关？

Here's an update, I tried renaming the folder to res/layout-large-mdpi but still found no change. Is it possible that it might have something to do with the emulator?

这是我的清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.androidattack.www.sunshine" >

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.androidattack.www.sunshine.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.androidattack.www.sunshine.DetailActivity"
            android:label="@string/title_activity_detail"
            android:parentActivityName="com.androidattack.www.sunshine.MainActivity" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.androidattack.www.sunshine.MainActivity" />
        </activity>
        <activity
            android:name="com.androidattack.www.sunshine.SettingsActivity"
            android:label="@string/title_activity_settings"
            android:parentActivityName="com.androidattack.www.sunshine.MainActivity" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.androidattack.www.sunshine.MainActivity" />
        </activity>
        <provider
            android:authorities="com.androidattack.www.sunshine"
            android:name=".data.WeatherProvider" />
    </application>

</manifest>

sw600dp布局：

sw600dp layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:divider="?android:attr/dividerHorizontal"
    android:baselineAligned="false"
    tools:context="com.androidattack.www.sunshine.MainActivity">

    <fragment
        android:layout_width="0dp"
        android:layout_height="fill_parent"
        android:name="com.androidattack.www.sunshine.ForecastFragment"
        android:id="@+id/fragment_forecast"
        android:layout_gravity="center_vertical"
        android:layout_weight="1" />

    <FrameLayout
        android:layout_width="0dp"
        android:layout_height="fill_parent"
        android:layout_weight="2"
        android:id="@+id/weather_detail_container">

    </FrameLayout>


</LinearLayout>

正常布局：

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/fragment_forecast"
    android:name="com.androidattack.www.sunshine.ForecastFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    tools:context="com.androidattack.www.sunshine.ForecastFragment"
    tools:ignore="MergeRootFrame"
    tools:layout="@android:layout/list_content" />

最后这是我的MainActivity.java类：

And finally this is my MainActivity.java class:

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.androidattack.www.sunshine;

import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;


public class MainActivity extends ActionBarActivity {

    private final String LOG_TAG = MainActivity.class.getSimpleName();
    private boolean mTwoPane;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if (findViewById(R.id.weather_detail_container) != null) {
            // Tablet view
            mTwoPane = true;

            // In two-pane mode, show the detail view by adding
            // or replacing the detail fragment using a
            // fragment transaction.

            if (savedInstanceState == null) {
                getSupportFragmentManager().beginTransaction()
                        .replace(R.id.weather_detail_container, new DetailFragment())
                        .commit();
            }
        } else {
            // Phone View
            mTwoPane = false;
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            startActivity(new Intent(this, SettingsActivity.class));
            return true;
        }
        if (id == R.id.action_map) {
            openPreferredLocationInMap();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private void openPreferredLocationInMap() {
        SharedPreferences sharedPrefs =
                PreferenceManager.getDefaultSharedPreferences(this);
        String location = sharedPrefs.getString(
                getString(R.string.pref_location_key),
                getString(R.string.pref_location_default));

        // Using the URI scheme for showing a location found on a map.  This super-handy
        // intent can is detailed in the "Common Intents" page of Android's developer site:
        // http://developer.android.com/guide/components/intents-common.html#Maps
        Uri geoLocation = Uri.parse("geo:0,0?").buildUpon()
                .appendQueryParameter("q", location)
                .build();

        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(geoLocation);

        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        } else {
            Log.d(LOG_TAG, "Couldn't call " + location + ", no receiving apps installed!");
        }
    }
}