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使用Android的Facebook登錄失敗

[英]Facebook login failed with android

堆棧跟蹤

05-30 16:50:36.015 7351-7351 / com.example.android.facebooklogin E / dalvikvm:找不到類android.graphics.drawable.RippleDrawable,從方法android.support.v7.widget.AppCompatImageHelper引用。 hasOverlappingRendering 05-30 16:50:37.658 7351-7351 / com.example.android.facebooklogin E / AndroidRuntime:FATAL EXCEPTION:main Process:com.example.android.facebooklogin,PID:7351登錄嘗試失敗:LoginActivity不能從com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:262)的com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:262)的com.facebook.login.widget.LoginButton $ LoginClickListener.onClick( com.facebook.FacebookButtonBase $ 1.onClick(FacebookButtonBase.java:310)上的com.facebook.FacebookButtonBase $ 1.onClick(FacebookButtonBase.java:310)android.view.View $ PerformClick.run(View。的android.os.Handler.handleCallback(Handler.java:808)的java:18801)android.os.Loope的android.os.Handler.dispatchMessage(Handler.java:103)的java。 r.loop(Looper.java:193)在android.app.ActivityThread.main(ActivityThread.java:5390)在java.lang.reflect.Method.invokeNative(本機方法)在java.lang.reflect.Method.invoke( Method.java:515)位於com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:833)位於com.android.internal.os.ZygoteInit.main(ZygoteInit.java:649)位於dalvik.system .NativeStart.main(本機方法)

MainActivity.java

  package com.example.android.facebooklogin;

    import android.content.Intent;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.TextView;

    import com.facebook.CallbackManager;
    import com.facebook.FacebookCallback;
    import com.facebook.FacebookException;
    import com.facebook.FacebookSdk;
    import com.facebook.login.LoginResult;
    import com.facebook.login.widget.LoginButton;

    public class MainActivity extends AppCompatActivity {
    TextView info;
    LoginButton loginButton;
    CallbackManager callbackManager;

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

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext());

        callbackManager = CallbackManager.Factory.create();
        setContentView(R.layout.activity_main);
        info = (TextView) findViewById(R.id.info);
        loginButton = (LoginButton) findViewById(R.id.login_button);
        loginButton.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 cancelled. ");

                    }

                    @Override
                    public void onError(FacebookException error) {
                        info.setText("Login attempt failed. ");

                    }
                });
    }

activity_main.xml

  <?xml version="1.0" encoding="utf-8"?>
     <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.android.facebooklogin.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/info"
        android:text="Hello World!"
        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"/>

    </RelativeLayout>

清單文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.facebooklogin">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <meta-data
            android:name="com.facebook.sdk.ApplicationId"
            android:value="@string/facebook_app_id" />
        <!--<activity android:name=".MainActivity">-->
        <activity
            android:name=".MainActivity"

            android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
            android:label="@string/app_name">
            <activity android:name="com.facebook.FacebookActivity"
                android:theme="@android:style/Theme.Translucent.NoTitleBar"
                android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
                android:label="@string/app_name" />

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />

                <data android:scheme="@string/fb_login_protocol_scheme" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

應用程式編號

<string name="facebook_app_id">xxxxxxxxxxxxxxxx</string>

RippleDrawable是在API 21中添加的,因此在較早的SDK中不可用。

您可以將可繪制文件移動到res / drawable-v21,以確保它不會在早期版本中崩潰。

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