项目开发总结之SharedPreferences

在项目中经常会用到SharedPreferences来保存一些简单的数据，所以抽取了项目中的一段代码来展示。

public class PreferenceUtils {

public static String getPrefString(Context context, String key,
                                   final String defaultValue) {
    SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    if (settings == null) {
        return "";
    }
    return settings.getString(key, defaultValue);
}

/**
 * 清除缓存
 *
 * @param context
 */
public static void clearPref(Context context) {
    SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    boolean isguide = getPrefBoolean(context, "isguide", false);
    settings.edit().clear().commit();
    setPrefBoolean(context, "isguide", isguide);

}

public static void setPrefString(Context context, final String key,
                                 final String value) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    settings.edit().putString(key, value).commit();
}

public static boolean getPrefBoolean(Context context, final String key,
                                     final boolean defaultValue) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    return settings.getBoolean(key, defaultValue);
}

public static boolean hasKey(Context context, final String key) {
    return PreferenceManager.getDefaultSharedPreferences(context).contains(
            key);
}

public static void setPrefBoolean(Context context, final String key,
                                  final boolean value) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    settings.edit().putBoolean(key, value).commit();
}

public static void setPrefInt(Context context, final String key,
                              final int value) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    settings.edit().putInt(key, value).commit();
}

public static int getPrefInt(Context context, final String key,
                             final int defaultValue) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    return settings.getInt(key, defaultValue);
}

public static void setPrefFloat(Context context, final String key,
                                final float value) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    settings.edit().putFloat(key, value).commit();
}

public static float getPrefFloat(Context context, final String key,
                                 final float defaultValue) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    return settings.getFloat(key, defaultValue);
}

public static void setSettingLong(Context context, final String key,
                                  final long value) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    settings.edit().putLong(key, value).commit();
}

public static long getPrefLong(Context context, final String key,
                               final long defaultValue) {
    final SharedPreferences settings = PreferenceManager
            .getDefaultSharedPreferences(context);
    return settings.getLong(key, defaultValue);
}

public static void clearPreference(Context context,
                                   final SharedPreferences p) {
    final SharedPreferences.Editor editor = p.edit();
    editor.clear();
    editor.commit();
}

}

注：本文代码是他人总结，故标记为转载。