解析和Facebook集成(未找到类定义错误) [英] Parse and Facebook integration (no class def found error)

问题描述

我正在开发一个使用Parse BaaS的Android应用，我希望使用户能够使用其Facebook帐户登录.我正在使用Android Studio.我导入了Facebook sdk，Parse和ParseFacebookUtils jar文件. 我有以下活动代码

I am developing an Android app that uses Parse BaaS and I want to enable users to login using their facebook account. I am using Android Studio. I imported facebook sdk and Parse and ParseFacebookUtils jar files. I have the following activity code

private void initUI() {
    this.loginButton = (Button) findViewById(R.id.main_login_button);
    this.loginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            loginWithFacebook();
        }
    });
}

private void loginWithFacebook() {
    ParseFacebookUtils.logIn(this, REQUEST_LOGIN, new LogInCallback() {
        @Override
        public void done(ParseUser parseUser, ParseException e) {
            logToDisplay("User logged in " + parseUser.getUsername());

        }
    });
}

loginWithFacebook方法被调用.不幸的是，它引发以下异常:

The loginWithFacebook method is called. Unfortunately, it throws the following exception:

java.lang.NoClassDefFoundError: com.facebook.Session$Builder

我在做什么错了?

预先感谢;)

推荐答案

使用Parse Android 1.9，我们必须包含ParseFacebookUtils4.jar

With Parse Android 1.9, we have to include ParseFacebookUtils4.jar

此外，在进行12小时的研究后，文档中给出的示例无效.这是我为Parse 1.9和Facebook 4.0 SDK提供的有效解决方案

Also the example given in the documentation is not valid after doing a research for 12 hours. Here is the working solution i have for Parse 1.9 and Facebook 4.0 SDK

 Button b = (Button)findViewById(R.id.login_button);
    ParseFacebookUtils.initialize(this);
    //showHashKey(this);
    b.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            ParseFacebookUtils.logInWithReadPermissionsInBackground(YOUR_ACTIVITY.this, YOUR_PERMISION_COLLECTION, new LogInCallback() {
                @Override
                public void done(ParseUser user, ParseException err) {
                    if (user == null) {
                        Log.d("MyApp", "Uh oh. The user cancelled the Facebook login.");
                    } else if (user.isNew()) {
                        Log.d("MyApp", "User signed up and logged in through Facebook!");
                    } else {
                        Log.d("MyApp", "User logged in through Facebook!");
                    }
                }
            });
        }
    });

ParseFacebookUtils.logIn在ParseFacebookUtils4中已弃用.另外，onActivityResult上还有一个不推荐使用的函数ParseFacebookUtils.finishAuthentication.现在应该像下面一样

ParseFacebookUtils.logIn is deprecated in ParseFacebookUtils4. Also there is another deprecated function ParseFacebookUtils.finishAuthentication on onActivityResult. It should be now like below

 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    ParseFacebookUtils.onActivityResult(requestCode, resultCode, data);
}

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