在應(yīng)用中添加一個(gè)關(guān)閉音量的按鈕，實(shí)現(xiàn)功能是，當(dāng)用戶(hù)調(diào)節(jié)框時(shí)判斷true還是false，然后設(shè)置為相反。我覺(jué)得只要簡(jiǎn)單改變SharedPreference的truefalse。最開(kāi)始的框架代碼如下：SharedPreferences getPrefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext()); boolean cmute = getPrefs.getBoolean("mute", defValue); if (cmute == true){                      } if (cmute == false){ }后來(lái)找到的方法都不夠簡(jiǎn)單：我改成：if (cmute == false){                 Editor editor = getPrefs.edit();                 editor.putBoolean("mute", true);                 editor.commit();                 Editor editor2 = getPrefs.edit();                 editor.putBoolean("notice", true);                 editor.commit();             }             if (cmute == true){                 Editor editor = getPrefs.edit();                 editor.putBoolean("mute", false);                 editor.commit();                 Editor editor2 = getPrefs.edit();                 editor.putBoolean("notice", false);                 editor.commit();             }