Question

希望你能注意到下面的图片中的教授照片，但是做这件事的随机人只是对图像进行了硬编码。我从Facebook获取了用户名，电子邮件ID和prof图片，我已经将用户名和电子邮件ID与导航抽屉活动挂钩，但我不知道如何显示我从Facebook获取的prof_pic我只是不知道没有如何分配它。如果有任何可行的方法，请告诉我。以下是nav_header.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="@dimen/nav_header_height"
    android:background="@drawable/side_nav_bar"
    android:gravity="bottom"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

    <ImageView
        android:id="@+id/profpic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        android:src="@android:drawable/sym_def_app_icon" />

</LinearLayout>

这是我需要从中获取prof_pic的java文件 .java类文件

public class Testing2 extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_testing2);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        ////////Code is used to fetch the user name////////////
        Bundle b = getIntent().getExtras();


        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
        TextView facebookName = (TextView) navigationView.getHeaderView(0).findViewById(R.id.manner);
        TextView Email = (TextView) navigationView.getHeaderView(0).findViewById(R.id.email);
        ImageView profilePictureView = (ImageView) navigationView.getHeaderView(0).findViewById(R.id.profpic);

        ////////Code is used to display the user name after fetching it from other activity////////////
        facebookName.setText(b.getCharSequence("name"));
        Email.setText(b.getCharSequence("email"));
        profilePictureView.setProfileId();

        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.setDrawerListener(toggle);
        toggle.syncState();

  }

这是我用来获取用户名，邮件ID和教授图片

的.java文件

public class SelfTrail extends AppCompatActivity implements View.OnClickListener {

    private LoginButton btnLogin;
    TextView facebookName;
    TextView Email;
    Button button;
    private CallbackManager callbackManager;
    private ProfilePictureView profilePictureView;

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

        setContentView(R.layout.activity_self_trail);
        findAllViewsId();
        button.setOnClickListener(this);

        btnLogin = (LoginButton)findViewById(R.id.login_button);
        facebookName = (TextView)findViewById(R.id.name);
        Email = (TextView)findViewById(R.id.Email);
        profilePictureView = (ProfilePictureView)findViewById(R.id.image);


        btnLogin.setReadPermissions(Arrays.asList("public_profile, email"));
        callbackManager = CallbackManager.Factory.create();

        if(AccessToken.getCurrentAccessToken() != null){
            RequestData();
            facebookName.setVisibility(View.VISIBLE);
            Email.setVisibility(View.VISIBLE);
            profilePictureView.setVisibility(View.VISIBLE);
        }

        btnLogin.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.v("Main", response.toString());
                                setProfileToView(object);
                            }
                        });
                Bundle parameters = new Bundle();
                parameters.putString("fields", "id,name,email");
                request.setParameters(parameters);
                request.executeAsync();

            }

            @Override
            public void onCancel() {

            }

            @Override
            public void onError(FacebookException exception) {

            }
        });
       }




    private void findAllViewsId() {
        button = (Button) findViewById(R.id.next);
        facebookName = (TextView)findViewById(R.id.name);
        Email = (TextView)findViewById(R.id.Email);
        profilePictureView = (ProfilePictureView)findViewById(R.id.image);
    }

    @Override
    public void onClick(View v) {

        Intent intent = new Intent(getApplicationContext(), Testing2.class);
        //Create a bundle object
        Bundle b = new Bundle();

        //Inserts a String value into the mapping of this Bundle
        b.putString("name", facebookName.getText().toString());
        b.putString("email", Email.getText().toString());
        b.putString("image", profilePictureView.toString());

        //Add the bundle to the intent.
        intent.putExtras(b);

        //start the DisplayActivity
        startActivity(intent);
    }

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


    public void RequestData(){
        GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
            @Override
            public void onCompleted(JSONObject jsonObject,GraphResponse response) {

                JSONObject json = response.getJSONObject();
                try {
                    if(json != null){
                        facebookName.setText(jsonObject.getString("name"));
                        Email.setText(jsonObject.getString("email"));
                        profilePictureView.setPresetSize(ProfilePictureView.NORMAL);
                        profilePictureView.setProfileId(jsonObject.getString("id"));
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        });
        Bundle parameters = new Bundle();
        parameters.putString("fields", "id,name,email");
        request.setParameters(parameters);
        request.executeAsync();
    }


    private void setProfileToView(JSONObject jsonObject) {
        try {
            facebookName.setText(jsonObject.getString("name"));
            Email.setText(jsonObject.getString("email"));

            profilePictureView.setPresetSize(ProfilePictureView.NORMAL);
            profilePictureView.setProfileId(jsonObject.getString("id"));

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

}

Answer 1

最好的方法是使用毕加索图书馆。它会自动从后台的URL中提取图像并将其设置为imageView。

将其添加到依赖项

下的build.gradle文件中

          compile 'com.squareup.picasso:picasso:2.5.2'

然后在你的代码而不是profilePictureView.setProfileId（）;使用

          Picasso.with(this).load( "http://graph.facebook.com/"+userID+"/picture?type=small").into(profilePictureView)

其中userID是配置文件的已使用ID。

Answer 2

我不知道这是做什么的：

profilePictureView.setProfileId();

但要设置图像只需使用：

profilePictureView.setImageBitmap(pass_image_bitmap_here);

Answer 3

您可以随时使用图像加载库以高效方式加载图像（例如Picasso或Glide）。在你的情况下，（使用毕加索）你可以写

Picasso.with(context)
       .load(url)
       .placeholder(R.drawable.loading_img)
       .error(R.drawable.error_img)
       .into(profilePictureView);

你的网址= https://graph.facebook.com/“+ id +”/图片？宽度= 200＆amp; height = 150

我希望这会有所帮助。

Answer 4

您只需要用户的用户ID，然后就可以调用这样的函数：

/**
 * Function loads the users facebook profile pic
 * 
 * @param userID
 */
public Bitmap getUserPic(String userID) {
    String imageURL;
    Bitmap bitmap = null;
    Log.d(TAG, "Loading Picture");
    imageURL = "http://graph.facebook.com/"+userID+"/picture?type=small";
    try {
        bitmap = BitmapFactory.decodeStream((InputStream)new URL(imageURL).getContent());
    } catch (Exception e) {
        Log.d("TAG", "Loading Picture FAILED");
        e.printStackTrace();
    }
    return bitmap;
}

Answer 5

这就是我提出的方式。

使用用于android中图像处理的Picasso库。

在gradle中添加依赖项：

compile 'com.squareup.picasso:picasso:2.5.2'

添加您的活动以显示提取的图片：

Picasso.with(context)
   .load(url)
   .placeholder(R.drawable.loading_img)
   .error(R.drawable.error_img)
   .into(profilePictureView);

在导航抽屉活动中显示提取的个人资料图片

5 个答案: