Tablet UI not working in my application

Question

I am trying to create an application that has two different interfaces for tablets and phones, and I use fragments to implement this. I created two separate xml files for each tablet and phone plan, and both of them are called activity_main.xml, with the phone layout placed in the res / layout folder and the tablet layout placed in the res / layout-sw600dp folder.

However, when I try to run my application on the Nexus 10 emulator (Android Studio), it will automatically switch to the default phone layout. The application does not crash or something else, but it just launches in the phone’s user interface when it should work in the tablet’s user interface. I do not know what the source of this error is, and therefore any help would be appreciated.

In this update, I tried to rename the folder to res / layout-large-mdpi, but did not find any changes. Is it possible that this may have something to do with the emulator?

Here is my manifest:

<?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 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> 

normal layout:

 <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" /> 

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 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!"); } } } 

Answer 1

For me, the code was correct, but the problem was in the emulator. If you installed the emulator using No skin , it should work. Remove this skin!

Answer 2

Have you tried what happens to the layout when you rotate the device? (for example, according to the sunshine project, you need to create both layout-sw600dp port and layout-sw600dp)

Answer 3

layout-sw600dp is for a 7-inch tablet / emulator

layout-sw720dp designed for 10-inch tablet / emulator

Answer 4

Using layout-xhdpi will work for this particular scenario and the Nexus 7 or 10 emulator for Nanodegree. I have never been able to get the layout-sw600dp to load my emulator correctly, and instead, I currently support Sunshine with both the layout-xhdpi and the layout-sw600dp with the same Activity_main.xml.