Question

我正在尝试使用SharedPreferences为我的应用注册帐户，但是当我尝试在saveSipAccount尝试使用SharedPreferences时，它总是返回与我在getSipAccount保存的值不同的值。它只在我重新启动我的应用程序时才有效。我是android和SIP的新手所以请帮助我，非常感谢你！

这是我的代码

private static String PREFERENCE_NAME = "voip_demo_pref";
private static String SIP_DOMAIN_KEY = "sip_domain";
private static String SIP_PROXY_KEY = "proxy";
private static String SIP_USER_KEY = "user";
private static String SIP_PASSWORD_KEY = "password";

public void saveSipAccount(Context context, String domain, String proxy, String user, String password) {
    SipAccount account = new SipAccount(domain, proxy, user, password);
    saveSipAccount(context, account);
}

public void saveSipAccount(Context context, SipAccount account) {
    SharedPreferences pref = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
    SharedPreferences.Editor e = pref.edit();
    e.putString(SIP_DOMAIN_KEY, account.getDomain());
    e.putString(SIP_PROXY_KEY, account.getProxy());
    e.putString(SIP_USER_KEY, account.getUser());
    e.putString(SIP_PASSWORD_KEY, encryptString(account.getPassword()));
    e.apply();
}

public SipAccount getSipAccount(Context context) {
    SipAccount account = new SipAccount();
    SharedPreferences pref = context.getSharedPreferences(PREFERENCE_NAME, context.MODE_PRIVATE);
    account.setDomain(pref.getString(SIP_DOMAIN_KEY, ""));
    account.setProxy(pref.getString(SIP_PROXY_KEY, ""));
    account.setUser(pref.getString(SIP_USER_KEY, ""));
    String password = pref.getString(SIP_PASSWORD_KEY, "");
    if (!TextUtils.isEmpty(password)) {
        password = decryptString(password);
    }
    account.setPassword(password);

    return account;
}

这是我拨打saveSipAccount

时的代码

String domain = String.valueOf(sipDomainView.getText());
        String proxy = String.valueOf(sipProxyView.getText());
        String user = String.valueOf(sipUserView.getText());
        String password = String.valueOf(sipPasswordView.getText());
       sipManager.saveSipAccount(MyApplication.getInstance().getApplicationContext(), domain, proxy, user, password);
        Log.d(TAG, "saved");

        try {
            service.changeAccount();
        }

这是getSipAccount

public boolean changeAccount() {
    sipManager = SipManager.newInstance();
    SipAccount profile = sipManager.getSipAccount(MyApplication.getInstance().getApplicationContext());
    AccountConfig config = sipManager.getAccountConfig(app, profile.getDomain(), profile.getProxy()
            , profile.getUser(), profile.getPassword());
    try {
        MyApp.ep.libRegisterThread(Thread.currentThread().getName());
    } catch (Exception e) {
        Log.e(TAG, "libRegisterThread error.", e);
    }
    changeAccountStatus("processing");

    try {
        account.modify(config);
    } catch (Exception e) {
        Log.e(TAG, "MyAccount.modify error.", e);
        changeAccountStatus("Fail registration");
        return false;
    }
    return true;
}

Answer 1

你可以试试这个 e.commit（）

并创建一个这样的String变量：

String str1 = pref.getString(SIP_DOMAIN_KEY, null)

并记录str1进行检查。希望这能帮到你

Answer 2

尝试为sharedPreferences创建一个特殊类。例如：

public class MySharedPreferences {

    public static final String MyPREFERENCES = "MyPrefs";
    public static final String KEY1 = "key1";
    public static final String KEY2 = "key2";
    // other keys

    private static MySharedPreferences mInstance;
    private static Context mCtx;

    private MySharedPreferences(Context context) {
        mCtx = context;
    }

    public static synchronized MySharedPreferences getInstance(Context context) {
        if (mInstance == null) {
            mInstance = new MySharedPreferences(context);
        }
        return mInstance;
    }

    //this method will save the sip account
    public boolean saveSipAccount(String domain, String proxy, String user, String password) {
    SipAccount account = new SipAccount(domain, proxy, user, password);
   SharedPreferences sharedPreferences = mCtx.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(YOUR_KEY, account.getDomain());
        //other putString
        return editor.commit();
}

public SipAccount getSipAccount() {
    SipAccount account = new SipAccount();
    SharedPreferences sharedPreferences = mCtx.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
    String domain = sharedPreferences.getString(YOUR_KEY, ""));
    account.setDomain(domain));
    //other code
    if (!TextUtils.isEmpty(password)) {
        password = decryptString(password);
    }
    account.setPassword(password);

    return account;
}

获取SipAccount

SipAccount acount = MySharedPreferences.getInstance(context).getSipAccount();

删除并重新安装您的应用。

Answer 3

当我使用Tray代替SharedPreference时，我的应用有效！非常感谢你的回答和你的善意:)！

当我使用SharedPreferences时，我无法获得真正的价值

3 个答案: