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RxJava

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package com.example.oschina.utils;

import android.content.Context; import android.content.SharedPreferences; import com.example.oschina.App;

final public class PreferencesUtils {

private PreferencesUtils() {
}

private static SharedPreferences sp;

private static SharedPreferences getInstance() {
    if (sp == null) {
        sp = App.sContext.getSharedPreferences("config", Context.MODE_PRIVATE);
    }
    return sp;
}

/**
 * 移除配置参数
 */
public static void removeKey(String key) {
    getInstance().edit().remove(key).commit();
}

/**
 * 清空配置参数
 */
public static void clear() {
    getInstance().edit().clear().commit();
}

/**
 * 保存配置参数
 */
public static void save(String key, Object value) {
    if (value instanceof Integer) {
        getInstance().edit().putInt(key, (Integer) value).commit();
    } else if (value instanceof Boolean) {
        getInstance().edit().putBoolean(key, (Boolean) value).commit();
    } else if (value instanceof String) {
        getInstance().edit().putString(key, (String) value).commit();
    }
}

/**
 * 读取int配置参数
 */
public static int readInt(String key, int defaultValue) {
    return getInstance().getInt(key, defaultValue);
}

/**
 * 读取boolean配置参数
 */
public static boolean readBoolean(String key, boolean defaultValue) {
    return getInstance().getBoolean(key, defaultValue);
}

/**
 * 读取String配置参数
 */
public static String readString(String key, String defaultValue) {
    return getInstance().getString(key, defaultValue);
}

}

package com.example.oschina.utils;

import android.content.Context; import android.content.SharedPreferences; import com.example.oschina.App;

final public class PreferencesUtils {

private PreferencesUtils() {
}

private static SharedPreferences sp;

private static SharedPreferences getInstance() {
    if (sp == null) {
        sp = App.sContext.getSharedPreferences("config", Context.MODE_PRIVATE);
    }
    return sp;
}

/**
 * 移除配置参数
 */
public static void removeKey(String key) {
    getInstance().edit().remove(key).commit();
}

/**
 * 清空配置参数
 */
public static void clear() {
    getInstance().edit().clear().commit();
}

/**
 * 保存配置参数
 */
public static void save(String key, Object value) {
    if (value instanceof Integer) {
        getInstance().edit().putInt(key, (Integer) value).commit();
    } else if (value instanceof Boolean) {
        getInstance().edit().putBoolean(key, (Boolean) value).commit();
    } else if (value instanceof String) {
        getInstance().edit().putString(key, (String) value).commit();
    }
}

/**
 * 读取int配置参数
 */
public static int readInt(String key, int defaultValue) {
    return getInstance().getInt(key, defaultValue);
}

/**
 * 读取boolean配置参数
 */
public static boolean readBoolean(String key, boolean defaultValue) {
    return getInstance().getBoolean(key, defaultValue);
}

/**
 * 读取String配置参数
 */
public static String readString(String key, String defaultValue) {
    return getInstance().getString(key, defaultValue);
}

}

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RxJava