我正在尝试为在同一活动屏幕中具有Facebook和Twitter登录选项的用户构建登录屏幕
我在单独的活动中实现了Facebook按钮和Twitter按钮，并且它有效，但是当我在同一活动中添加两个按钮时，它会崩溃。
这是错误：
FATAL EXCEPTION: main
Process: poketpixels.reminder, PID: 7582
java.lang.ExceptionInInitializerError
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at poketpixels.reminder.LoginActivity.onCreate(LoginActivity.java:118)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: null
at com.facebook.internal.Validate.sdkInitialized(Validate.java:99)
at com.facebook.FacebookSdk.getCallbackRequestCodeOffset(FacebookSdk.java:735)
at com.facebook.internal.CallbackManagerImpl$RequestCodeOffset.toRequestCode(CallbackManagerImpl.java:109)
at com.facebook.login.widget.LoginButton.<clinit>(LoginButton.java:58)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:256)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at poketpixels.reminder.LoginActivity.onCreate(LoginActivity.java:118)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
这是我的源代码：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
{
setContentView(R.layout.activity_login);
info = (TextView) findViewById(R.id.info);
FbloginButton = (LoginButton) findViewById(R.id.login_button);
TloginButton = (TwitterLoginButton) findViewById(R.id.twitter_login_button);
status = (TextView) findViewById(R.id.status);
status.setText("Status: Ready");
FbloginButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//initialize facebook sdk
FacebookSdk.sdkInitialize(getApplicationContext());
callbackManager = CallbackManager.Factory.create();
FbloginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
info.setText(
"User ID: "
+ loginResult.getAccessToken().getUserId()
+ "\n" +
"Auth Token: "
+ loginResult.getAccessToken().getToken()
);
}
@Override
public void onCancel() {
info.setText("Login attempt canceled.");
}
@Override
public void onError(FacebookException e) {
info.setText("Login attempt failed.");
}
});
}
});
TloginButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//intialize twitter sdk with fabric
TwitterAuthConfig authConfig = new TwitterAuthConfig(TWITTER_KEY, TWITTER_SECRET);
Fabric.with(getApplicationContext(), new Twitter(authConfig));
TloginButton.setCallback(new Callback<TwitterSession>() {
@Override
public void success(Result<TwitterSession> twitterSessionResult) {
String output = "Status: " +
"Your login was successful " +
twitterSessionResult.data.getUserName() +
"\nAuth Token Received: " +
twitterSessionResult.data.getAuthToken().token;
status.setText(output);
}
@Override
public void failure(TwitterException e) {
status.setText("Status: Login Failed");
}
});
}
});
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
TloginButton.onActivityResult(requestCode, resultCode, data);
}
如果这是正确的方法我很困惑。
这是xml文件：
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/info"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:textSize="18sp"
/>
<com.facebook.login.widget.LoginButton
android:id="@+id/login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
/>
<com.twitter.sdk.android.core.identity.TwitterLoginButton
android:id="@+id/twitter_login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/status"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:textSize="20sp"
/>
答案 0 :(得分：1)
Facebook SDK需要在使用其任何方法之前进行初始化。您可以通过调用sdkInitialize并将应用程序的上下文传递给它来完成此操作。在onCreate之前将以下代码添加到Activity的{{1}}方法中：
Onclicklistener for twitter也在FacebookSdk.sdkInitialize(getApplicationContext());
之前添加：
setContentView