Question

我已经尝试了我在这个网站上看到的所有内容但仍然没有运气。我有我的MainActivity，它检查用户是否已登录。如果他们有它启动一个名为ActiveThreadFragment的片段，如果他们没有它启动登录屏幕。然后，用户输入他们的凭据并按下登录。它会加载一个进度框，然后再次显示登录屏幕，并显示“登录成功”。我究竟做错了什么？可能真的很明显，但请看看我的代码。

MainActivity

if (PreferenceConnector.readString(this, "authToken") == null) {
        Intent intent = new Intent(this, FirstLoginActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
        startActivity(intent);
    } else {
        initUI();
    }

    if (PreferenceConnector.readString(this, "authToken") != null &&
            PreferenceConnector.readString(this, "authToken").equalsIgnoreCase("skip")) {
        SharedPreferences.Editor editor = PreferenceConnector.getEditor(this);
        editor.clear();
        editor.commit();

    }
}

FirstLoginActivity

private void initUI() {
    mLoginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            final ProgressDialog progressDialog = ProgressDialog.show(FirstLoginActivity.this,
                    "Please wait", "Checking credentials", true);
            progressDialog.setCancelable(true);
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (isDataValid()) {
                            sendCredentials();
                            Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                            startActivity(intent);
                        } else {
                            Toast.makeText(getApplicationContext(), "Login Failed - Invalid Username and/or " +
                                    "Password", Toast.LENGTH_LONG).show();
                        }
                        Thread.sleep(20000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    progressDialog.dismiss();

                }
            }).start();

        }
    });

    mSkipText.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            PreferenceConnector.writeString(getApplicationContext(), "authToken", "skip");
            Intent intent = new Intent(getApplicationContext(), MainActivity.class);
            startActivity(intent);

        }
    });

}

AndroidManifest

<activity android:name=".activity.FirstLoginActivity"
        android:label="@string/app_name"
        android:launchMode = "singleInstance">

</activity>

提前致谢：D

Answer 1

尝试使用SharedPreferences我不太确定你从哪里获得这个PreferenceConnector课程，但我怀疑它是否能正确保存。

<强>读

SharedPreferences myPrefs = getActivity().getPreferences(Context.MODE_PRIVATE);
String authToken = myPrefs.getString("authToken",null);

<强>编写

SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("authToken", newToken);
editor.commit()

活动加载两次onClick

1 个答案: