SharedPreferencesUtil &Version检测 &Gson工具类

来源：互联网发布：中老年人运动装淘宝网编辑：程序博客网时间：2024/05/16 17:50

spUtil/** * Created by daydreamty on 2017/4/7. * * @description: SharedPreference工具类 */public class SpUtil{    private static final String SP_KEY = "";//你的key名    public static void putString(Context ctx, String key, String value) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        sp.edit().putString(key, value).apply();    }    public static String getString(Context ctx, String key, String defaultvalue) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        return sp.getString(key, defaultvalue);    }    public static void putInt(Context ctx, String key, int value) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        sp.edit().putInt(key, value).apply();    }    public static int getInt(Context ctx, String key, int defaultvalue) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        return sp.getInt(key, defaultvalue);    }    public static void putBoolean(Context ctx, String key, Boolean value) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        sp.edit().putBoolean(key, value).apply();    }    public static Boolean getBoolean(Context ctx, String key, Boolean defaultvalue) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        return sp.getBoolean(key, defaultvalue);    }    public static void remove(Context ctx, String key) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        sp.edit().remove(key).apply();    }    public static void removeAll(Context ctx) {        SharedPreferences sp = ctx.getSharedPreferences(SP_KEY, Context.MODE_PRIVATE);        sp.edit().clear().apply();    }}

GsonUtil

/** * Created by daydr on 2017/5/5. * * @description: Gson工具 */public class GsonUtil {    private static Gson gson = null;    static {        if (gson == null) {            gson = new Gson();        }    }    private GsonUtil() {    }    /**     * 转成json     *     * @param object 待转换的对象     * @return 返回值     */    public static String GsonString(Object object) {        String gsonString = null;        if (gson != null) {            gsonString = gson.toJson(object);        }        return gsonString;    }    /**     * 转成bean     *     * @param gsonString 待转换的json     * @param cls        Bean.class     * @return 返回值     */    public static <T> T GsonToBean(String gsonString, Class<T> cls) {        T t = null;        if (gson != null) {            t = gson.fromJson(gsonString, cls);        }        return t;    }    /**     * 转成list     *     * @param gsonString 待转换的json     * @param cls        转换的目标     * @return 返回值     */    public static <T> List<T> GsonToList(String gsonString, Class<T> cls) {        List<T> list = null;        if (gson != null) {            list = gson.fromJson(gsonString, new TypeToken<List<T>>() {            }.getType());        }        return list;    }    /**     * 转成list中有map的     *     * @param gsonString 待转换的json     * @return 返回值     */    public static <T> List<Map<String, T>> GsonToListMaps(String gsonString) {        List<Map<String, T>> list = null;        if (gson != null) {            list = gson.fromJson(gsonString,                    new TypeToken<List<Map<String, T>>>() {                    }.getType());        }        return list;    }    /**     * 转成map的     *     * @param gsonString 待转换的json     * @return 返回值     */    public static <T> Map<String, T> GsonToMaps(String gsonString) {        Map<String, T> map = null;        if (gson != null) {            map = gson.fromJson(gsonString, new TypeToken<Map<String, T>>() {            }.getType());        }        return map;    }}

VersionUtil

/** * Created by daydreamty on 2017/11/13. * * @description 版本检测util */public class VersionUtil {    // 以下是获得版本信息的工具方法    //版本名    public static String getVersionName(Context context) {        return getPackageInfo(context).versionName;    }    //版本号    public int getVersionCode(Context context) {        return getPackageInfo(context).versionCode;    }    private static PackageInfo getPackageInfo(Context context) {        PackageInfo pi = null;        try {            PackageManager pm = context.getPackageManager();            pi = pm.getPackageInfo(context.getPackageName(),                    PackageManager.GET_CONFIGURATIONS);            return pi;        } catch (Exception e) {            e.printStackTrace();        }        return pi;    }
}

阅读全文

0 0