在Android中登錄Facebook SDK

Question

我試圖在我的應用程序中使用Facebook登錄，在我的片段活動中，我有4個標簽，並且我想在最后一個標簽中顯示和使用Facebook登錄，但是當我運行它時，它在每個標簽，當我單擊它時它不起作用，應用程序也在1分鍾內關閉

這是simpleFragement活動代碼：

package com.tekinarslan.material.sample;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import android.webkit.WebView;
import android.webkit.WebViewClient;

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

import static com.tekinarslan.material.sample.R.layout.page;

public class SampleFragment extends Fragment {

    private static final String ARG_POSITION = "position";
    private WebView myWebView;
    private String LOG_TAG = "AndroidWebViewActivity";

    private int position;

    public static SampleFragment newInstance(int position) {
        SampleFragment f = new SampleFragment();
        Bundle b = new Bundle();
        b.putInt(ARG_POSITION, position);
        f.setArguments(b);
        return f;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        position = getArguments().getInt(ARG_POSITION);
        View rootView = inflater.inflate(page, container, false);

        ProgressBarCircular progressBarCircular = (ProgressBarCircular) rootView.findViewById(R.id.progress);
        FloatingActionButton fab = (FloatingActionButton) rootView.findViewById(R.id.fabButton);
        WebView webView = (WebView) rootView.findViewById(R.id.webView);

        fab.setDrawableIcon(getResources().getDrawable(R.drawable.plus));




            switch (position) {
            case 0:


                webView.loadUrl("http://www.google.com");



                break;
            case 1:

                webView.loadUrl("http://www.google.com");

                break;
            case 2:

                webView.loadUrl("http://www.google.com");

                break;
            case 3:

                LoginButton loginButton = (LoginButton) rootView.findViewById(R.id.login_button);
                loginButton.setReadPermissions("user_friends");
                // If using in a fragment
                loginButton.setFragment(this);
                // Other app specific specialization

                // Callback registration
                CallbackManager callbackManager = null;
                loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        // App code
                    }

                    @Override
                    public void onCancel() {
                        // App code
                    }

                    @Override
                    public void onError(FacebookException exception) {
                        // App code
                    }
                });
                break;
                    }

        return rootView;
    }
}

上

編輯1

這是我的托管活動

package com.tekinarslan.material.sample;

import android.content.res.Configuration;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.view.Gravity;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.facebook.CallbackManager;
import com.facebook.FacebookSdk;


public class SampleActivity extends ActionBarActivity {

    private DrawerLayout mDrawerLayout;
    private ActionBarDrawerToggle drawerToggle;

    private ListView mDrawerList;
    ViewPager pager;
    private String titles[] = new String[]{"Sample Tab 1", "Sample Tab 2", "Sample Tab 3", "Sample Tab 4"};
    private Toolbar toolbar;

    SlidingTabLayout slidingTabLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sample);
        FacebookSdk.sdkInitialize(getApplicationContext());
        CallbackManager callbackManager = CallbackManager.Factory.create();

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.navdrawer);
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        if (toolbar != null) {
            setSupportActionBar(toolbar);
            toolbar.setNavigationIcon(R.drawable.ic_ab_drawer);
        }
        pager = (ViewPager) findViewById(R.id.viewpager);
        slidingTabLayout = (SlidingTabLayout) findViewById(R.id.sliding_tabs);
        pager.setAdapter(new ViewPagerAdapter(getSupportFragmentManager(), titles));

        slidingTabLayout.setViewPager(pager);
        slidingTabLayout.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
            @Override
            public int getIndicatorColor(int position) {
                return Color.WHITE;
            }
        });
        drawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.app_name, R.string.app_name);
        mDrawerLayout.setDrawerListener(drawerToggle);
        String[] values = new String[]{
                "DEFAULT", "RED", "BLUE", "MATERIAL GREY"
        };
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, android.R.id.text1, values);
        mDrawerList.setAdapter(adapter);
        mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {
                switch (position) {
                    case 0:
                        mDrawerList.setBackgroundColor(getResources().getColor(R.color.material_deep_teal_500));
                        toolbar.setBackgroundColor(getResources().getColor(R.color.material_deep_teal_500));
                        slidingTabLayout.setBackgroundColor(getResources().getColor(R.color.material_deep_teal_500));
                        mDrawerLayout.closeDrawer(Gravity.START);
                        break;
                    case 1:
                        mDrawerList.setBackgroundColor(getResources().getColor(R.color.red));
                        toolbar.setBackgroundColor(getResources().getColor(R.color.red));
                        slidingTabLayout.setBackgroundColor(getResources().getColor(R.color.red));
                        mDrawerLayout.closeDrawer(Gravity.START);

                        break;
                    case 2:
                        mDrawerList.setBackgroundColor(getResources().getColor(R.color.blue));
                        toolbar.setBackgroundColor(getResources().getColor(R.color.blue));
                        slidingTabLayout.setBackgroundColor(getResources().getColor(R.color.blue));
                        mDrawerLayout.closeDrawer(Gravity.START);

                        break;
                    case 3:
                        mDrawerList.setBackgroundColor(getResources().getColor(R.color.material_blue_grey_800));
                        toolbar.setBackgroundColor(getResources().getColor(R.color.material_blue_grey_800));
                        slidingTabLayout.setBackgroundColor(getResources().getColor(R.color.material_blue_grey_800));
                        mDrawerLayout.closeDrawer(Gravity.START);

                        break;
                }

            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (drawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        switch (item.getItemId()) {
            case android.R.id.home:
                mDrawerLayout.openDrawer(Gravity.START);
                return true;
        }

        return super.onOptionsItemSelected(item);
    }


    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        drawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        drawerToggle.onConfigurationChanged(newConfig);
    }

}

編輯2

我加了這兩行

 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext());
        CallbackManager callbackManager = CallbackManager.Factory.create();
        setContentView(R.layout.activity_sample);

但是，當我單擊Facebook按鈕或滑動選項卡時，該應用程序關閉

編輯3

現在這里是05-02 19:18:54.784 24164-24164/com.tekinarslan.material.sample E/AndroidRuntime﹕ FATAL EXCEPTION: main Log in attempt failed: LoginActivity could not be started at com.facebook.login.LoginManager.startLogin(LoginManager.java:382) at com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:250) at com.facebook.login.widget.LoginButton$LoginClickListener.onClick(LoginButton.java:689) at com.facebook.FacebookButtonBase$1.onClick(FacebookButtonBase.java:310) at android.view.View.performClick(View.java:4475) at android.view.View$PerformClick.run(View.java:18786) at android.os.Handler.handleCallback(Handler.java:730) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:176) at android.app.ActivityThread.main(ActivityThread.java:5419) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:525) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862) at dalvik.system.NativeStart.main(Native Method ： 05-02 19:18:54.784 24164-24164/com.tekinarslan.material.sample E/AndroidRuntime﹕ FATAL EXCEPTION: main Log in attempt failed: LoginActivity could not be started at com.facebook.login.LoginManager.startLogin(LoginManager.java:382) at com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:250) at com.facebook.login.widget.LoginButton$LoginClickListener.onClick(LoginButton.java:689) at com.facebook.FacebookButtonBase$1.onClick(FacebookButtonBase.java:310) at android.view.View.performClick(View.java:4475) at android.view.View$PerformClick.run(View.java:18786) at android.os.Handler.handleCallback(Handler.java:730) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:176) at android.app.ActivityThread.main(ActivityThread.java:5419) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:525) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862) at dalvik.system.NativeStart.main(Native Method 05-02 19:18:54.784 24164-24164/com.tekinarslan.material.sample E/AndroidRuntime﹕ FATAL EXCEPTION: main Log in attempt failed: LoginActivity could not be started at com.facebook.login.LoginManager.startLogin(LoginManager.java:382) at com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:250) at com.facebook.login.widget.LoginButton$LoginClickListener.onClick(LoginButton.java:689) at com.facebook.FacebookButtonBase$1.onClick(FacebookButtonBase.java:310) at android.view.View.performClick(View.java:4475) at android.view.View$PerformClick.run(View.java:18786) at android.os.Handler.handleCallback(Handler.java:730) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:176) at android.app.ActivityThread.main(ActivityThread.java:5419) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:525) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862) at dalvik.system.NativeStart.main(Native Method

Answer 1

確保使用以下命令行在托管活動中初始化SDK：

        FacebookSdk.sdkInitialize(getApplicationContext());

還要像這樣初始化callBackManager：

        callbackManager = CallbackManager.Factory.create();

編輯1

在AndroidManifest文件中注冊LoginActivity 。

注冊回調后，應通過重寫onActivityResult()將登錄結果轉發到callbackManager ，如下所示：

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