主題劑量不保存在共享偏好

我已經在我的應用程序中設置主題。主題在應用程序運行時運行良好。但是當我從最近的屏幕清除應用程序並再次運行時，默認主題將設置爲應用程序而不是更改的主題。主題劑量不保存在共享偏好

我想運行與以前更改的主題的應用程序。

爲此，我使用了共享首選項。但它不起作用。不能得到什麼錯誤。

主題類：

public class Theme { 

    private static int sTheme; 
    private Context context; 

    public final static int THEME_DEFAULT = 0; 
    public final static int THEME_CYAN = 1; 
    public final static int THEME_INDIGO = 2; 
    public final static int THEME_GREEN = 3; 
    public final static int THEME_YELLOW = 4; 
    public final static int THEME_GRAY = 5; 
    public final static int THEME_ORANGE = 6; 
    public final static int THEME_TEAL = 7; 
    public final static int THEME_LIGHT_BLUE = 8; 
    public static final String MyPREFERENCES = "key"; 
    public static SharedPreferences sharedpreferences; 

    public static void SaveInt(String key, int sTheme, Context context){ 
     SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putInt(key, sTheme); 
     editor.apply(); 
    } 
    public static void changeToTheme(Activity activity, int theme) { 
     sTheme = theme; 
     activity.finish(); 
     Intent i = new Intent(activity, activity.getClass()); 
     activity.startActivity(i); 
    } 

    /** Set the theme of the activity, according to the configuration. */ 
    public static void onActivityCreateSetTheme(Activity activity) { 
     switch (sTheme) { 
      default: 

      case THEME_DEFAULT: 
       activity.setTheme(R.style.AppTheme); 
       SaveInt(MyPREFERENCES, sTheme,activity); 
       break; 

      case THEME_CYAN: 

       activity.setTheme(R.style.CyanTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 
       break; 

      case THEME_INDIGO: 

       activity.setTheme(R.style.IndigoTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 

       break; 

      case THEME_GREEN: 

       activity.setTheme(R.style.GreenTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 

       break; 

      case THEME_GRAY: 

       activity.setTheme(R.style.GrayTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 

       break; 

      case THEME_YELLOW: 

       activity.setTheme(R.style.YellowTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 

       break; 

      case THEME_LIGHT_BLUE: 

       activity.setTheme(R.style.LightBlueTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 

       break; 

      case THEME_ORANGE: 

       activity.setTheme(R.style.OrangeTheme); 
       SaveInt(MyPREFERENCES, sTheme, activity); 

       break; 

      case THEME_TEAL: 

       activity.setTheme(R.style.TealTheme); 
       SaveInt(MyPREFERENCES, sTheme,activity); 

       break; 
     } 

    } 

}

主要活動：

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); 
    int savedValue = sharedPreferences.getInt("key",0); 

    Theme.SaveInt(MyPREFERENCES,savedValue,this); 
    Theme.onActivityCreateSetTheme(this); 

    super.onCreate(savedInstanceState);

什麼錯？

謝謝..

來源

2016-02-26 Sid

您沒有使用好方法來獲得SharedPreferences。

SharedPreferences sp = context.getSharedPreferences("sp_file_name", 0); 
//put the value 0 with the key "theme" 
sp.edit.putInt("theme", 0).apply(); 

//get the value associated with the key "theme", -1 if the key "theme" does not exist 
int theme = sp.getInt("theme", -1);

來源

2016-02-26 17:27:19 xiaomi

什麼是「sp_file_name」？ – Sid

這只是一個名字，沒關係。共享偏好設置存儲在安裝了APK的文件中。該文件將使用第一個參數的名稱。 http://developer.android.com/reference/android/content/Context.html#getSharedPreferences%28java.lang.String,%20int%29 – xiaomi

public static void SaveInt（String key，int sTheme，Context context）SharedPreferences sp = context.getSharedPreferences（「key」，MODE_PRIVATE）; SharedPreferences.Editor editor = sharedPreferences.edit（）; editor.putInt（key，sTheme）; editor.apply（）; } ---------如果我這樣做私人劑量不解決和分享偏好。 – Sid

主題劑量不保存在共享偏好

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