自定义Android Facebook登录按钮

Question

我想自定义Facebook登录按钮的外观,我们与Facebook sdk for android(facebook-android-sdk-3.0.1)相处.我想要一个简单的android按钮,其标题为"通过Facebook登录".我找不到任何关于这方面的文件.

因此,如果有人知道如何以简单的方式做到这一点,请告诉我或指导我如何做到这一点.

Answer 1

为了拥有完全自定义的facebook登录按钮而不使用com.facebook.widget.LoginButton.

根据facebook sdk 4.x,

有来自facebook的新登录概念

LoginManager和AccessToken - 这些新类执行Facebook登录

所以,现在您可以在没有Facebook登录按钮的情况下访问Facebook身份验证

layout.xml

    <Button
            android:id="@+id/btn_fb_login"
            .../>

MainActivity.java

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        FacebookSdk.sdkInitialize(this.getApplicationContext());

        callbackManager = CallbackManager.Factory.create();

        LoginManager.getInstance().registerCallback(callbackManager,
                new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        Log.d("Success", "Login");

                    }

                    @Override
                    public void onCancel() {
                        Toast.makeText(MainActivity.this, "Login Cancel", Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onError(FacebookException exception) {
                        Toast.makeText(MainActivity.this, exception.getMessage(), Toast.LENGTH_LONG).show();
                    }
                });

        setContentView(R.layout.activity_main);

        Button btn_fb_login = (Button)findViewById(R.id.btn_fb_login);

        btn_fb_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                  LoginManager.getInstance().logInWithReadPermissions(MainActivity.this, Arrays.asList("public_profile", "user_friends"));
            }
        });

    }

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    callbackManager.onActivityResult(requestCode, resultCode, data); 
}

Answer 2

您可以使用样式来修改登录按钮

<style name="FacebookLoginButton">
    <item name="android:textSize">@dimen/smallTxtSize</item>
    <item name="android:background">@drawable/facebook_signin_btn</item>
    <item name="android:layout_marginTop">10dp</item>
    <item name="android:layout_marginBottom">10dp</item>
    <item name="android:layout_gravity">center_horizontal</item>
</style>

并在布局中

<com.facebook.widget.LoginButton
        xmlns:fb="http://schemas.android.com/apk/res-auto"
        android:id="@+id/loginFacebookButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        fb:login_text="@string/loginFacebookButton"
        fb:logout_text=""
        style="@style/FacebookLoginButton"/>

Answer 3

我发现这样做的最好方法是,如果你想完全自定义按钮,那就是创建一个按钮,或者你想要的任何视图(在我的情况下它是一个LinearLayout)并设置一个OnClickListener到该视图,并调用以下内容onClick事件:

com.facebook.login.widget.LoginButton btn = new LoginButton(this);
btn.performClick();

Answer 4

您可以像这样修改登录按钮

<com.facebook.widget.LoginButton
            xmlns:fb="http://schemas.android.com/apk/res-auto"
            android:id="@+id/login_button"
            android:layout_width="249dp"
            android:layout_height="45dp"
            android:layout_above="@+id/textView1"
            android:layout_centerHorizontal="true"
            android:layout_gravity="center_horizontal"
            android:layout_marginBottom="30dp"
            android:layout_marginTop="30dp"
            android:contentDescription="@string/login_desc"
            android:scaleType="centerInside"
            fb:login_text=""
            fb:logout_text="" />

在代码中我定义了后台资源:

final LoginButton button = (LoginButton) findViewById(R.id.login_button);
button.setBackgroundResource(R.drawable.facebook);

Answer 5

1. 在本机Facebook按钮上创建自定义Facebook按钮并更改可见性:

   <LinearLayout
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:orientation="vertical">
   
       <Button
               android:id="@+id/facebookView"
               android:layout_width="300dp"
               android:layout_height="48dp"
               android:layout_gravity="center_horizontal"
               android:layout_marginBottom="12dp"
               android:background="@drawable/btn_frame"
               android:gravity="center"
               android:text="@string/Sign_in_facebook_button"
               android:textColor="@color/colorAccent" />
   
       <com.facebook.login.widget.LoginButton
               android:id="@+id/facebookButton"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
               android:visibility="invisible"
               android:layout_marginBottom="12dp" />
   
    </LinearLayout>
   

2. 将监听器添加到假按钮并模拟单击:

   facebookView.setOnClickListener(this);
   @Override
   public void onClick(View v) {
       if (v.getId() == R.id.facebookView){
          facebookButton.performClick();
       }
   }
   

Answer 6

在较新的Facebook SDK中,登录和注销文本名称为:

 <com.facebook.login.widget.LoginButton
 xmlns:facebook="http://schemas.android.com/apk/res-auto"
 facebook:com_facebook_login_text=""
 facebook:com_facebook_logout_text=""/>

Answer 7

//call Facebook onclick on your customized button on click by the following

FacebookSdk.sdkInitialize(this.getApplicationContext());

        callbackManager = CallbackManager.Factory.create();

        LoginManager.getInstance().registerCallback(callbackManager,
                new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        Log.d("Success", "Login");

                    }

                    @Override
                    public void onCancel() {
                        Toast.makeText(MainActivity.this, "Login Cancel", Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onError(FacebookException exception) {
                        Toast.makeText(MainActivity.this, exception.getMessage(), Toast.LENGTH_LONG).show();
                    }
                });

        setContentView(R.layout.activity_main);

        Button mycustomizeedbutton=(Button)findViewById(R.id.mycustomizeedbutton);

        mycustomizeedbutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                  LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile", "user_friends"));
            }
        });

    }