first version solarCast

app/src/main/java/org/woheller69/weather/preferences/AppPreferencesManager.java

@@ -0,0 +1,164 @@
+package org.woheller69.weather.preferences;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Handler;
+import android.os.Looper;
+import android.widget.Toast;
+
+import androidx.preference.PreferenceManager;
+
+import org.woheller69.weather.BuildConfig;
+import org.woheller69.weather.R;
+
+/**
+ * This class provides access and methods for relevant preferences.
+ */
+public class AppPreferencesManager {
+
+
+    /**
+     * Member variables
+     */
+    SharedPreferences preferences;
+
+    /**
+     * Constructor.
+     *
+     * @param preferences Source for the preferences to use.
+     */
+    public AppPreferencesManager(SharedPreferences preferences) {
+        this.preferences = preferences;
+    }
+
+    public boolean isFirstTimeLaunch(Context context) {
+        boolean result = preferences.getBoolean("firstLaunch", true);
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
+        SharedPreferences.Editor editor = sp.edit();
+        editor.putBoolean("firstLaunch",false);
+        editor.apply();
+        return result;
+    }
+
+    /**
+     * This method converts a given temperature value into the unit that was set in the preferences.
+     *
+     * @param temperature The temperature to convert into the unit that is set in the preferences.
+     *                    Make sure to pass a value in celsius.
+     * @return Returns the converted temperature.
+     **
+     */
+    public float convertTemperatureFromCelsius(float temperature) {
+        // 1 = Celsius (fallback), 2 = Fahrenheit
+        int prefValue = Integer.parseInt(preferences.getString("temperatureUnit", "1"));
+        if (prefValue == 1) {
+            return temperature;
+        } else {
+            return (((temperature * 9) / 5) + 32);
+        }
+    }
+
+    /**
+     * This method converts a given distance value into the unit that was set in the preferences.
+     *
+     * @param kilometers The kilometers to convert into the unit that is set in the preferences.
+     *                   Make sure to pass a value in kilometers.
+     * @return Returns the converted distance.
+     */
+    public float convertDistanceFromKilometers(float kilometers) {
+        // 1 = kilometers, 2 = miles
+        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "1"));
+        if (prefValue == 1) {
+            return kilometers;
+        } else {
+            return convertKmInMiles(kilometers);
+        }
+    }
+
+    /**
+     * @return Returns true if kilometers was set as distance unit in the preferences else false.
+     */
+    public boolean isDistanceUnitKilometers() {
+        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "0"));
+        return (prefValue == 1);
+    }
+
+    /**
+     * @return Returns true if miles was set as distance unit in the preferences else false.
+     */
+    public boolean isDistanceUnitMiles() {
+        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "0"));
+        return (prefValue == 2);
+    }
+
+    /**
+     * Converts a kilometer value in miles.
+     *
+     * @param km The value to convert to miles.
+     * @return Returns the converted value.
+     */
+    public float convertKmInMiles(float km) {
+        // TODO: Is this the right class for the function???
+        return (float) (km / 1.609344);
+    }
+
+    /**
+     * Converts a miles value in kilometers.
+     *
+     * @param miles The value to convert to kilometers.
+     * @return Returns the converted value.
+     */
+    public float convertMilesInKm(float miles) {
+        // TODO: Is this the right class for the function???
+        return (float) (miles * 1.609344);
+    }
+
+    /**
+     * @return Returns "°C" in case Celsius is set and "°F" if Fahrenheit was selected.
+     */
+    public String getTemperatureUnit() {
+        int prefValue = Integer.parseInt(preferences.getString("temperatureUnit", "1"));
+        if (prefValue == 1) {
+            return "°C";
+        } else {
+            return "°F";
+        }
+    }
+
+    /**
+     * @return Returns "km" in case kilometer is set and "mi" if miles was selected.
+     * @param applicationContext
+     */
+    public String getDistanceUnit(Context applicationContext) {
+        int prefValue = Integer.parseInt(preferences.getString("distanceUnit", "1"));
+        if (prefValue == 1) {
+            return applicationContext.getString(R.string.units_km);
+        } else {
+            return "mi";
+        }
+    }
+
+
+    public boolean showStarDialog(Context context) {
+        int versionCode = preferences.getInt("versionCode",BuildConfig.VERSION_CODE);
+        boolean askForStar=preferences.getBoolean("askForStar",true);
+
+        if (!isFirstTimeLaunch(context) && BuildConfig.VERSION_CODE>versionCode && askForStar){ //not at first start, only after upgrade and only if use has not yet given a star or has declined
+            SharedPreferences.Editor editor = preferences.edit();
+            editor.putInt("versionCode", BuildConfig.VERSION_CODE);
+            editor.apply();
+         return true;
+        } else {
+            SharedPreferences.Editor editor = preferences.edit();
+            editor.putInt("versionCode", BuildConfig.VERSION_CODE);
+            editor.apply();
+          return false;
+        }
+    }
+
+    public void setAskForStar(boolean askForStar){
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putBoolean("askForStar", askForStar);
+        editor.apply();
+    }
+}