import com.facebook.login.LoginBehavior; //导入依赖的package包/类
/**
 * Sign in to google account - without Google's log in button.
 *
 * @param activity the activity
 * @param callback the callback to receive the method's result
 */
public void signIn(@NonNull Activity activity, @NonNull final FacebookLoginResultCallback callback) {
    mCallbackManager = CallbackManager.Factory.create();
    mFacebookLoginResultCallBack = callback;
    registerCallBackManager(activity);

    LoginManager.getInstance()
            .setLoginBehavior(LoginBehavior.NATIVE_WITH_FALLBACK)
            .logInWithPublishPermissions(activity, null);
}
 

import com.facebook.login.LoginBehavior; //导入依赖的package包/类
@Override
protected void onAuthenticationStarted() throws AuthenticationException {
	LoginManager.getInstance().registerCallback(facebookCallbackManager, generalFacebookCallback);
	LoginManager.getInstance().setLoginBehavior(LoginBehavior.SUPPRESS_SSO);
	LoginManager.getInstance().logInWithReadPermissions(
		getFragment(),
		authMode.getPermissions()
	);
}
 

import com.facebook.login.LoginBehavior; //导入依赖的package包/类
public void setLoginBehavior(LoginBehavior loginBehavior) {
    this.loginBehavior = loginBehavior;
}
 

import com.facebook.login.LoginBehavior; //导入依赖的package包/类
public LoginBehavior getLoginBehavior() {
    return loginBehavior;
}
 

import com.facebook.login.LoginBehavior; //导入依赖的package包/类
/**
 * @param loginBehavior
 *            The loginBehavior to set.
 */
public Builder setLoginBehavior(LoginBehavior loginBehavior) {
    mLoginBehavior = loginBehavior;
    return this;
}
 

import com.facebook.login.LoginBehavior; //导入依赖的package包/类
/**
 * Init Google log in button.
 *
 * @param activity the activity
 */
private void initLoginButton(Activity activity, LoginButton loginButton) {
    loginButton.setReadPermissions(getFacebookReadPermissions());
    loginButton.setLoginBehavior(LoginBehavior.NATIVE_WITH_FALLBACK);
}
 

import com.facebook.login.LoginBehavior; //导入依赖的package包/类
/**
 * Get session login behavior
 *
 * @return
 */
LoginBehavior getLoginBehavior() {
    return mLoginBehavior;
}