JakeSteam

public class AlertDialogHelper {
    private static void displayAlertDialog(Context context, String title, String body, DialogAction... actions) {
        LayoutInflater inflater = LayoutInflater.from(context);
        final LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, 1);
        final View inflatedLayout = inflater.inflate(R.layout.custom_alert_dialog, null);
        final AlertDialog dialog = new AlertDialog.Builder(context).create();
        dialog.setView(inflatedLayout);

        ((TextView)inflatedLayout.findViewById(R.id.title)).setText(title);
        ((TextView)inflatedLayout.findViewById(R.id.body)).setText(body);

JakeSteam

public class LanguageHelper {
    public static void updateLanguage(Context ctx) {
        String lang = PreferenceManager.getDefaultSharedPreferences(ctx).getString("locale", "");
        updateLanguage(ctx, lang);
    }

    public static void updateLanguage(Context context, int language) {
        updateLanguage(context, getLocaleById(language));
    }

JakeSteam

public class BaseActivity extends Activity {
    @Override
    protected void onResume() {
        super.onResume();
        MusicHelper.getInstance(this).setMovingInApp(false);
    }

    @Override
    public void onPause() {
        super.onPause();

JakeSteam

    @Override
    protected void onResume() {
        super.onResume();

        //noinspection ResourceType
        setRequestedOrientation(Setting.get(Enums.Setting.Orientation).getIntValue());
    }

JakeSteam

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

    <application
        android:name=".MainApplication"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name">
        <meta-data
            android:name="DATABASE"

JakeSteam

    <application
        android:allowBackup="true"
        android:fullBackupContent="@xml/backup_rules"

JakeSteam

import android.content.Context
import android.support.v4.view.ViewPager
import android.util.AttributeSet
import android.view.MotionEvent

enum class SwipeDirection { BOTH, LEFT, RIGHT, NONE }

// https://stackoverflow.com/a/34076649/608312
class LockableViewPager(context: Context, attrs: AttributeSet) : ViewPager(context, attrs) {

JakeSteam

    <style name="Font_Regular" tools:keep="@style/Font_Regular">
        <item name="android:fontFamily">@font/the_sans_c4s</item>
    </style>

    <style name="Font_Regular_Italic" parent="Font_Regular" tools:keep="@style/Font_Regular_Italic">
        <item name="android:textStyle">italic</item>
    </style>

    <style name="Font_Bold" parent="Font_Regular" tools:keep="@style/Font_Bold">
        <item name="android:textStyle">bold</item>

JakeSteam

// Changing colour
val layerDrawable = (ImageView)findViewById(R.id.my_drawable).drawable as LayerDrawable
val backgroundDrawable = layerDrawable.findDrawableByLayerId(R.id.background_circle) as GradientDrawable
backgroundDrawable.setColor(ContextCompat.getColor(context, R.color.my_colour))

// Changing drawable
layerDrawable.setDrawableByLayerId(R.id.foreground_icon, ContextCompat.getDrawable(context, R.drawable.new_foreground_icon))

JakeSteam

interface ActionHandler {
    fun handleAction(actionCode: String)
}