Android 如何通过SharedReferences获取Facebook用户档案（id、姓名、电子邮件和图片）并在其他活动中使用

我有一个应用程序，使用Facebook登录，然后转到另一个活动

首先，我检查了正确的登录，工作正常

然后，我将个人资料的日期保存在一个字符串数组列表中，然后保存在SharedReferences上

这是我的第一个活动（登录活动）的代码

导入android.content.DialogInterface；
导入android.content.Intent；
导入android.content.pm.PackageInfo；
导入android.content.pm.PackageManager；
导入android.support.v7.app.AppActivity；
导入android.os.Bundle；
导入android.util.Base64；
导入android.util.Log；
导入android.widget.ImageView；
导入android.widget.TextView；
导入android.widget.Toast；
导入com.bumptech.glide.glide；
导入com.facebook.CallbackManager；
导入com.facebook.facebook回调；
导入com.facebook.facebook异常；
导入com.facebook.FacebookSdk；
导入com.facebook.GraphRequest；
导入com.facebook.GraphResponse；
导入com.facebook.appevents.AppEventsLogger；
导入com.facebook.login.LoginResult；
导入com.facebook.login.widget.LoginButton；
导入org.json.JSONException；
导入org.json.JSONObject；
导入java.net.MalformedURLException；
导入java.net.URL；
导入java.security.MessageDigest；
导入java.security.NoSuchAlgorithmException；
导入java.security.Signature；
导入java.util.array；
公共类MainActivity扩展了AppCompatActivity{
登录按钮登录按钮FB；
CallbackManager CallbackManager；
列表配置文件=新的ArrayList（）；；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
sdkinInitialize（getApplicationContext（））；
AppEventsLogger.activateApp（此）；
LoginManager.getInstance（）.logOut（）；
loginButtonfb=（LoginButton）findviewbyd（R.id.login_按钮）；
//启动callbackmanager
callbackManager=callbackManager.Factory.create（）；
//获得获取公共配置文件、电子邮件、id和好友的权限
loginButtonfb.setReadPermissions（Arrays.asList（“public_profile”、“user_friends”、“email”）；
//按钮的寄存器响应
registerCallback（callbackManager，newfacebookcallback（））{
@凌驾
成功时公共无效（LoginResult LoginResult）{
GraphRequest request=GraphRequest.NewMereRequest（loginResult.getAccessToken（），new GraphRequest.GraphJSONObjectCallback（））{
@凌驾
未完成公共无效（JSONObject对象，GraphResponse响应）{
Log.d（“res”，object.toString（））；
Log.d（“res_obj”，response.toString（））；
试一试{
stringid=object.getString（“id”）；
试一试{
URL配置文件\u pic=新URL（“https://graph.facebook.com/“+id+”/picture？type=large”）；
Log.i（“profile_pic”，profile_pic+”）；
String f_name=object.getString（“first_name”）；
String l_name=object.getString（“last_name”）；
字符串名称=f_名称+“”+l_名称；
String email=object.getString（“email”）；
字符串image=profile_pic.toString（）；
Log.d（“数据”，电子邮件+姓名+图像+id）；
String type=“facebook”；
//将数据保存到arraylist中
添加（id）；
添加（姓名）；
添加（电子邮件）；
添加（图像）；
//保存到SharedReferences中
StringBuilder StringBuilder=新的StringBuilder（）；
用于（字符串s:profile）{
stringBuilder.append；
stringBuilder.append（“，”）；
}
SharedReferences sharpref=getSharedReferences（“ProfileList”，0）；
SharedReferences.Editor=sharpref.edit（）；
putString（“ProfileList”，stringBuilder.toString（））；
commit（）；
如果（电子邮件==null）{
}
}捕获（格式错误）{
e、 printStackTrace（）；
}
}捕获（JSONException e）{
e、 printStackTrace（）；
}
}
});
Bundle参数=新Bundle（）；
parameters.putString（“字段”、“id、名字、姓氏、电子邮件、性别”）；
请求。设置参数（参数）；
request.executeAsync（）；
goIndexScreen（）；
}
@凌驾
公开作废{
Toast.makeText（getApplicationContext（），“Has cancelado el-inicio de sesión”，Toast.LENGTH_LONG.show（）；
}
@凌驾
public void onError（facebook异常错误）{
Toast.makeText（getApplicationContext（），“Error al conectar con Facebook”，Toast.LENGTH_LONG.show（）；
}
});
}
//更正回调所需的方法
@凌驾
受保护的void onActivityResult（int请求代码、int结果代码、意图数据）{
callbackManager.onActivityResult（请求代码、结果代码、数据）；
}
//方法转到下一个活动
私有void goIndexScreen（）{
意向意向=新意向（此，Index.class）；
intent.addFlags（intent.FLAG_活动_清除_顶部| intent.FLAG_活动_清除_任务| intent.FLAG_活动_新任务）；
星触觉（意向）；
}

}

这是下一个活动的代码。这是一个导航抽屉活动。 首先，我创建一个视图并指定一个headerview。然后，加载

import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Base64;
import android.util.Log;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.bumptech.glide.Glide;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;
import com.facebook.appevents.AppEventsLogger;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;

import org.json.JSONException;
import org.json.JSONObject;

import java.net.MalformedURLException;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Signature;
import java.util.Arrays;



  public class MainActivity extends AppCompatActivity {

  LoginButton loginButtonfb;
  CallbackManager callbackManager;
  List<String> profile=new ArrayList<>();;

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

    setContentView(R.layout.activity_main);

    FacebookSdk.sdkInitialize(getApplicationContext());
    AppEventsLogger.activateApp(this);

    LoginManager.getInstance().logOut();
    loginButtonfb=(LoginButton)findViewById(R.id.login_button);

    // initiate callbackmanager
    callbackManager = CallbackManager.Factory.create();

    //get permision to get public profile,email,id,and friends
    loginButtonfb.setReadPermissions(Arrays.asList("public_profile","user_friends","email"));

    //register response of button
    loginButtonfb.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {

            GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {

                @Override
                public void onCompleted(JSONObject object, GraphResponse response) {

                    Log.d("res", object.toString());
                    Log.d("res_obj", response.toString());
                    try {

                        String id = object.getString("id");
                        try {
                            URL profile_pic = new URL("https://graph.facebook.com/" + id + "/picture?type=large");
                            Log.i("profile_pic", profile_pic + "");

                            String f_name = object.getString("first_name");
                            String l_name = object.getString("last_name");
                            String name = f_name + " " + l_name;

                            String email = object.getString("email");
                            String image = profile_pic.toString();


                            Log.d("data", email + name + image+id);
                            String type = "facebook";

                            //Save the data into the arraylist
                            profile.add(id);
                            profile.add(name);
                            profile.add(email);
                            profile.add(image);

                            //save into sharedpreferences
                            StringBuilder stringBuilder = new StringBuilder();

                            for (String s:profile){
                                stringBuilder.append(s);
                                stringBuilder.append(",");
                            }

                            SharedPreferences sharpref = getSharedPreferences("ProfileList",0);
                            SharedPreferences.Editor editor = sharpref.edit();
                            editor.putString("ProfileList", stringBuilder.toString());
                            editor.commit();


                            if (email == null) {

                            }
                        } catch (MalformedURLException e) {
                            e.printStackTrace();
                        }


                    } catch (JSONException e) {

                        e.printStackTrace();

                    }

                }
            });
            Bundle parameters = new Bundle();
            parameters.putString("fields", "id, first_name, last_name, email,gender");
            request.setParameters(parameters);
            request.executeAsync();
        goIndexScreen();
        }

        @Override
        public void onCancel() {
            Toast.makeText(getApplicationContext(),"Has cancelado el inicio de sesión",Toast.LENGTH_LONG).show();
        }

        @Override
        public void onError(FacebookException error) {
            Toast.makeText(getApplicationContext(),"Error al conectar con Facebook",Toast.LENGTH_LONG).show();
        }
    });
}


//method necesary to correct callback
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
callbackManager.onActivityResult(requestCode,resultCode,data);
}

//method to go to next activity
private void goIndexScreen() {
    Intent intent=new Intent(this,Index.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);
}

public class Index extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {

   private ImageView ivprofile;
   private TextView tvname;
   private TextView tvemail;
   private TextView tvidnumber;
   private String picprofile;
   private String name;
   private String idnumber;
   private String email;
   final List<String> profile = new ArrayList<String>();
   private View headerview;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_index);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

   //create a headerview to conect to header of left menu
    headerview=navigationView.getHeaderView(0);

    ivprofile=(ImageView)headerview.findViewById(R.id.imageProfile);
    tvname=(TextView)headerview.findViewById(R.id.fullName);
    tvemail=(TextView)headerview.findViewById(R.id.email);
    tvidnumber=(TextView) headerview.findViewById(R.id.idNumber);


    //check if session is already connected
    if(AccessToken.getCurrentAccessToken()==null){
        goLoginScreen();
    }

    //Load file saved by sharedpreferences into a new arraylist
    final SharedPreferences sharpref = getSharedPreferences("ProfileList",0);
    String Items = sharpref.getString("ProfileList","");
    String [] listItems = Items.split(",");
    for (int i=0;i<listItems.length;i++){
        profile.add(listItems[i]);
    }

    //get the profile

    idnumber=profile.get(0);
    name=profile.get(1);
    email=profile.get(2);
    picprofile=profile.get(3);

   tvname.setText(name);
   tvidnumber.setText(idnumber);
   tvemail.setText(email);
   Glide.with(this).load(picprofile).into(ivprofile);


Log.d("ArrayPerfil", name+email+idnumber+picprofile);


}

@Override
public void onBackPressed() {
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    if (drawer.isDrawerOpen(GravityCompat.START)) {
        drawer.closeDrawer(GravityCompat.START);
    } else {
        super.onBackPressed();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.index, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.nav_camera) {
        // Handle the camera action
    } else if (id == R.id.nav_gallery) {

    } else if (id == R.id.nav_slideshow) {

    } else if (id == R.id.nav_manage) {

    } else if (id == R.id.nav_share) {

    } else if (id == R.id.nav_send) {

    }else if (id == R.id.nav_logout) {
        LoginManager.getInstance().logOut();
        goLoginScreen();
    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

private void goLoginScreen() {
    Intent intent=new Intent(this,MainActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);
}

 public void setFacebookConnection() {

        LoginManager.getInstance().logOut();


        List<String> permissionNeeds = Arrays.asList("public_profile, email");

        LoginManager.getInstance().logInWithReadPermissions(mActivity, permissionNeeds);

        FacebookSdk.sdkInitialize(mActivity);

        callbackManager = CallbackManager.Factory.create();

        LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {


            @Override
            public void onSuccess(LoginResult loginResult) {

                GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {

                    @Override
                    public void onCompleted(JSONObject object, GraphResponse response) {

                        Log.d("res", object.toString());
                        Log.d("res_obj", response.toString());
                        try {

                            String id = object.getString("id");
                            try {
                                URL profile_pic = new URL("https://graph.facebook.com/" + id + "/picture?width=200&height=150");
                                Log.i("profile_pic", profile_pic + "");

                                String f_name = object.getString("first_name");
                                String l_name = object.getString("last_name");
                                String name = f_name + " " + l_name;
                                String email = object.getString("email");
                                String image = profile_pic.toString();


                                Log.d("data", email + name + image);
                                String type = "facebook";

                                if (email == null) {

                                }
                            } catch (MalformedURLException e) {
                                e.printStackTrace();
                            }


                        } catch (JSONException e) {

                            e.printStackTrace();

                        }

                    }
                });
                Bundle parameters = new Bundle();
                parameters.putString("fields", "id, first_name, last_name, email,gender");
                request.setParameters(parameters);
                request.executeAsync();
            }

            @Override
            public void onCancel() {

                Log.d("fb_exception", "cancel by user");
            }

            @Override
            public void onError(FacebookException exception) {

                Log.d("fb_exception", exception.toString());

            }
        });

    }

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

        callbackManager.onActivityResult(requestCode, resultCode, data);

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

  NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);

     headerView = navigationView.getHeaderView(0);

     tvUsername = (Textview) headerView.findViewById(R.id.username_textview_id);

     profile_image = (Textview) headerView.findViewById(R.id.profile_image);

   /**
 * this method used to user login with facebook.
 */
private void loginWithFacebook() {

    mLoginFbButton.setReadPermissions("public_profile", "email");
    mLoginFbButton.setFragment(this);
    mLoginFbButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            // App code
            if (Profile.getCurrentProfile() == null) {
                mProfileTracker = new ProfileTracker() {
                    @Override
                    protected void onCurrentProfileChanged(Profile profile, Profile profile2) {
                 // here getting fb user profile object.       
                }
                };
            } else {
                registerUsingFaceBook(Profile.getCurrentProfile());
            }

        }

        @Override
        public void onCancel() {

         }

        @Override
        public void onError(FacebookException exception) {
        }
    });
}