AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.thydetefs.mindtask"
          android:versionCode="1"
          android:versionName="1.0"
          android:installLocation="preferExternal">

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

    <uses-sdk android:minSdkVersion="11"/>

    <application android:label="@string/app_name">
        <activity android:name=".ActivityMain"
                  android:theme="@style/Theme.AppCompat.Light"
                  android:icon="@drawable/ic_launcher"
                  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=".ActivitySolve"
                  android:theme="@style/Theme.AppCompat.Light"
                  android:icon="@drawable/ic_launcher"
                  android:label="@string/app_name"/>

        <activity android:name=".ActivityFavorite"
                  android:theme="@style/Theme.AppCompat.Light"
                  android:icon="@drawable/ic_launcher"
                  android:label="@string/app_name"/>

    </application>
</manifest>