Top Ten Coding Easy Tips - Android

Reuse one class to avoid extra coding, for example, how we can make one class and use it multiple times in the project.

RecyclerView

import android.support.v7.widget.RecyclerView;

public abstract class RecyclerViewAdapter extends RecyclerView.Adapter {

    public abstract void add(Object object);
    public abstract void clear();
}

Activity

import android.support.v7.app.AppCompatActivity;

public abstract class UpasargaActivity extends AppCompatActivity {
    abstract protected void initialiseViews();
    abstract protected void initialiseListener();

}

Toast

public class showToast {

    public static Toast showToastWithMessage(String messageResourceId) {
        Toast toast = Toast.makeText(UpasargaApplication.getAppContext(), messageResourceId, Toast.LENGTH_SHORT);
        toast.show();
        return toast;
    }

    public static Toast showLongToastWithMessage(String messageResourceId) {
        Toast toast = Toast.makeText(UpasargaApplication.getAppContext(), messageResourceId, Toast.LENGTH_LONG);
        toast.show();
        return toast;
    }

}

Locale Helper

import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.preference.PreferenceManager;

import com.upasarga.elibrary.constants.SharedPrefConstants;

import java.util.Locale;

public class LocaleHelper {


    public static void onCreate(Context context) {
        String lang = getPersistedData(context, Locale.getDefault().getLanguage());
        setLocale(context, lang);
    }

    public static void onCreate(Context context, String defaultLanguage) {
        String lang = getPersistedData(context, defaultLanguage);
        setLocale(context, lang);
    }

    public static String getLanguage(Context context) {
        return getPersistedData(context, Locale.getDefault().getLanguage());
    }

    public static void setLocale(Context context, String language) {
        persist(context, language);
        updateResources(context, language);
    }

    private static String getPersistedData(Context context, String defaultLanguage) {
        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
        return preferences.getString(SharedPrefConstants.SELECTED_LANGUAGE, defaultLanguage);
    }

    private static void persist(Context context, String language) {
        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
        SharedPreferences.Editor editor = preferences.edit();

        editor.putString(SharedPrefConstants.SELECTED_LANGUAGE, language);
        editor.apply();
    }

    private static void updateResources(Context context, String language) {
        Locale locale = new Locale(language);
        Locale.setDefault(locale);

        Resources resources = context.getResources();

        Configuration configuration = resources.getConfiguration();
        configuration.locale = locale;

        resources.updateConfiguration(configuration, resources.getDisplayMetrics());
    }
}

Generic Type

public class GetType {

    public static <T> T getType(Object type, Class<T> classes) {
        try {
            return classes.cast(type);
        } catch (ClassCastException ex) {
            return null;
        }
    }
}

Thank you! It’s all about code.