[英]Any Example showing how to login using Facebook SDK 4.0 in Android either by using own button or Facebook Button?
Is there any tutorial or example showing how to login using own Button using Facebook SDK 4.0 in Android ? 是否有任何教程或示例显示如何使用Facebook SDK 4.0在Android中使用自己的Button登录? I am not getting anywhere and using facebook developers site it is difficult to understand.Like below when calling FBlogin button I want to check go for login if user has not logged in or if logged in I want the access token to get facebook profile information and user likes. 我没有到达任何地方并且使用Facebook开发者网站很难理解。如下所示,当调用FBlogin按钮时,如果用户尚未登录或登录,我想检查登录我希望访问令牌获取Facebook个人资料信息,用户喜欢。
FBlogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Facebook login Code to get profile info and user likes
}
});
I have tried also loginButton Facebook. 我也试过loginButton Facebook。
<com.facebook.login.widget.LoginButton
android:id="@+id/login_button"
android:layout_width="244dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
android:layout_marginBottom="30dp"
/>
But it is showing error in xml :- 但它在xml中显示错误: -
java.lang.NoClassDefFoundError: Could not initialize class com.facebook.login.widget.LoginButton
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:413)
at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:105)
at com.android.tools.idea.rendering.LayoutlibCallback.loadView(LayoutlibCallback.java:176)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:206)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:131)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:739)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:711)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:372)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:369)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:326)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:350)
at com.android.tools.idea.rendering.RenderService$5.compute(RenderService.java:708)
at com.android.tools.idea.rendering.RenderService$5.compute(RenderService.java:697)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:932)
at com.android.tools.idea.rendering.RenderService.createRenderSession(RenderService.java:697)
at com.android.tools.idea.rendering.RenderService.render(RenderService.java:816)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.doRender(AndroidLayoutPreviewToolWindowManager.java:646)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.access$1700(AndroidLayoutPreviewToolWindowManager.java:82)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7$1.run(AndroidLayoutPreviewToolWindowManager.java:589)
at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:178)
at com.intellij.openapi.progress.ProgressManager.executeProcessUnderProgress(ProgressManager.java:209)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:212)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:171)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7.run(AndroidLayoutPreviewToolWindowManager.java:584)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:327)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
My Activity class:- 我的活动课: -
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.activity_main);
Ia there any example/tutorial to login using facebook sdk4.0? 我有任何使用facebook sdk4.0登录的示例/教程吗? I am stuck in both way. 我被困在两边。 Please help. 请帮忙。
This might help you 这可能对你有帮助
// Custom button
private Button fbbutton;
// Creating Facebook CallbackManager Value
public static CallbackManager callbackmanager;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Initialize SDK before setContentView(Layout ID)
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.activity_main);
// Initialize layout button
fbbutton = (Button) findViewById(R.id.button2);
fbbutton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Call private method
onFblogin();
}
});
}
// Private method to handle Facebook login and callback
private void onFblogin()
{
callbackmanager = CallbackManager.Factory.create();
// Set permissions
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("email","user_photos","public_profile"));
LoginManager.getInstance().registerCallback(callbackmanager,
new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
System.out.println("Success");
GraphRequest.newMeRequest(
loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject json, GraphResponse response) {
if (response.getError() != null) {
// handle error
System.out.println("ERROR");
} else {
System.out.println("Success");
try {
String jsonresult = String.valueOf(json);
System.out.println("JSON Result"+jsonresult);
String str_email = json.getString("email");
String str_id = json.getString("id");
String str_firstname = json.getString("first_name");
String str_lastname = json.getString("last_name");
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}).executeAsync();
}
@Override
public void onCancel() {
Log.d(TAG_CANCEL,"On cancel");
}
@Override
public void onError(FacebookException error) {
Log.d(TAG_ERROR,error.toString());
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackmanager.onActivityResult(requestCode, resultCode, data);
}
In manifest add following, 在清单中添加以下内容
<application
android:allowBackup="true"
android:icon="@drawable/app_icon"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
.
.
<!-- [START Facebook] -->
<activity
android:name="com.facebook.FacebookActivity"
android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
android:label="@string/app_name"
android:theme="@android:style/Theme.Translucent.NoTitleBar" />
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/facebook_app_id" />
<!-- [END Facebook] -->
.
.
</application>
The best solution is to log in by using LoginManager. 最好的解决方案是使用LoginManager登录。 Here is how I managed this ( on click is made with ButterKnife ): 这是我如何管理这个(点击是使用ButterKnife):
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mCallbackManager = CallbackManager.Factory.create();
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
LoginManager.getInstance().registerCallback(mCallbackManager, this);
}
@OnClick(R.id.facebook_login_button)
@SuppressWarnings("unused")
public void loginWithFacebookAccount() {
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile", "email"));
}
@Override
public void onSuccess(LoginResult loginResult) {
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,last_name,link,email,picture");
GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), (jsonObject, graphResponse) -> {
String id = null;
if (jsonObject != null) {
try {
id = jsonObject.getString("id");
} catch (JSONException e) {
e.printStackTrace();
}
}
});
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException e) {
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
mCallbackManager.onActivityResult(requestCode, resultCode, data);
}
}
So this is how I've made it. 所以这就是我的成就。 Feel free to ask ;) 随意问;)
public class AuthWFacebookSDKFour extends Activity implements View.OnClickListener,FacebookCallback<LoginResult> {
List<String> permissionNeeds=Arrays.asList("user_photos","friends_photos", "email", "user_birthday", "user_friends");
//facebook callbacks manager
private CallbackManager cm;
private LoginButton mFbLoginButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//init facebook sdk and
FacebookSdk.sdkInitialize(getApplicationContext());
//instantiate callbacks manager
mCallbackManager = CallbackManager.Factory.create();
mFbLoginButton=(LoginButton)findViewById(R.id.FBBUTTONID);
//set permissions mFbLoginButton.setReadPermissions(ApplicationContext.facebookPermissions);
// register callback
//means hey facebook after login call onActivityResult of **this**
mFbLoginButton.registerCallback(mCallbackManager, this);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//manage login result
mCallbackManager.onActivityResult(requestCode, resultCode, data);
}
@Override
public void onSuccess(LoginResult loginResults) {
//login ok get access token
AccessToken.getActiveAccessToken();
}
@Override
public void onCancel() {
Log.e(TAG(),"facebook login canceled");
}
@Override
public void onError(FacebookException e) {
Log.e(TAG(),"facebook login failed error");
}
}
remember to insert in manifest 记得在清单中插入
<activity
android:name="com.facebook.FacebookActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.Translucent.NoTitleBar"
/>
For Facebook SDK version 4.X, In your activity or fragment (generally on onCreate() method): 对于Facebook SDK版本4.X,在您的活动或片段中(通常在onCreate()方法上):
// Initialize Facebook Sdk before UI
FacebookSdk.sdkInitialize(getApplicationContext());
callbackManager = CallbackManager.Factory.create();
loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton.setReadPermissions("user_friends");
// Callback registration
loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
// App code
Log.v(TAG, "fblogin onSuccess");
}
@Override
public void onCancel() {
// App code
Log.v(TAG, "fblogin onCancel");
}
@Override
public void onError(FacebookException exception) {
// App code
Log.v(TAG, "fblogin onError");
}
});
And also dont forget to pass facebook activity result to manager: 并且也不要忘记将facebook活动结果传递给经理:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
...
callbackManager.onActivityResult(requestCode, resultCode, data);
}
Using Android facebook SDK 4.X Login with faceboook Default Login_button 使用Android facebook SDK 4.X使用faceboook登录默认Login_button
public class FbDefaultBtnLogin extends AppCompatActivity {
private CallbackManager callbackManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.activity_fb_default_btn_login);
callbackManager = CallbackManager.Factory.create();
// LoginButton loginButton=(LoginButton)findViewById(R.id.login_button);
LoginManager.getInstance().logInWithReadPermissions(this,Arrays.asList("email","user_photos","public_profile"));
LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException e) {
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.jitendra.facebooklogin.FbDefaultBtnLogin">
<!--<com.facebook.login.widget.LoginButton-->
<!--android:id="@+id/login_button"-->
<!--android:layout_width="wrap_content"-->
<!--android:layout_height="wrap_content"-->
<!--android:layout_gravity="center_horizontal"-->
<!--android:layout_marginTop="30dp"-->
<!--android:layout_marginBottom="30dp" />
</RelativeLayout>
In Mainifest:- 在Mainifest中: -
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/app_id" />
<activity
android:name="com.facebook.FacebookActivity"
android:theme="@style/AppTheme" >
</activity>
hi check this tutorial: click here 嗨检查本教程: 点击这里
In this tutorial you can get latest Facebook SDK example with custom login and logout button logic. 在本教程中,您可以获得具有自定义登录和注销按钮逻辑的最新 Facebook SDK示例。
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