如何在Android上從畫廊上傳Facebook中的照片？

Question

我有這個類：

public class FacebookShare extends Activity implements DialogListener { 
    Facebook facebook = new Facebook("199622693386109"); 
    Bitmap bitmap; 
    byte [] data; 

    @Override 
    public void onCreate(Bundle savedInstanceState) 
    {  
     Bundle parameters = new Bundle(); 
     parameters.putString("message", "Test Photo"); 
     parameters.putByteArray("picture", data); 
     facebook.dialog(this, "stream.publish", parameters, this); 
     facebook.authorize(this, new DialogListener() 
     { 
      public void onComplete(Bundle values) {} 
      public void onFacebookError(FacebookError error) {} 
      public void onError(DialogError e) {} 
      public void onCancel() {} 

     }); 
    } 
} 

，但如果我運行此代碼，我的應用程序崩潰。請幫忙。

Answer 1

parameters.putByteArray("picture", data); 

數據是圖像的字節數組....

，並依照本link我沒有回答這個問題....

Answer 2

我們可以使用Facebook的圖形API與多部分上傳照片。 我使用改裝庫進行網絡呼叫

public interface ApiInterface { 
    @Multipart 
    @POST("/{id}/photos") 
    Call<UserModelResponse> uploadPhoto(@Part MultipartBody.Part image, @Path("id")String pageId, @Query("access_token") String token); 
} 

可以上傳多張圖片

public class ApiCall { 


private ApiInterface apiService; 
private Context context; 

public ApiCall(Context context) { 
    this.context = context; 
} 

public ApiInterface getRetroFitService() { 
    HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor(); 
    interceptor.setLevel(HttpLoggingInterceptor.Level.BODY); 
    OkHttpClient client = new OkHttpClient.Builder().addInterceptor(interceptor).build(); 

    Gson gson = new GsonBuilder().create(); 

    Retrofit builder = new Retrofit.Builder() 
      .baseUrl("https://graph.facebook.com") 
      .client(client) 
      .addConverterFactory(GsonConverterFactory.create(gson)) 
      .build(); 

    apiService = builder.create(ApiInterface.class); 
    return apiService; 
} 

public void uploadImageToFBPage(String pageId, ArrayList<Parcelable> path) throws IOException { 

    for (Parcelable parcelable : path) { 
     MultipartBody.Part body = prepareFilePart("source", (Uri) parcelable); 
     SharedPreferences sharedPreferences = context.getSharedPreferences(PREFERENCE, Context.MODE_PRIVATE); 
     String token = sharedPreferences.getString("token", ""); 
     Call<UserModelResponse> call = apiService.uploadPhoto(body, pageId, token); 
     call.enqueue(new Callback<UserModelResponse>() { 
      @Override 
      public void onResponse 
        (Call<UserModelResponse> call, Response<UserModelResponse> response) { 
       if (response.errorBody() == null) { 
        Toast.makeText(context, "Image upload Success", Toast.LENGTH_SHORT).show(); 
       } else { 
        onFailure(call, new Exception()); 
       } 
      } 

      @Override 
      public void onFailure(Call<UserModelResponse> call, Throwable t) { 
       Toast.makeText(context, "Image upload Fail", Toast.LENGTH_SHORT).show(); 
      } 
     }); 
    } 
} 


@NonNull 
private MultipartBody.Part prepareFilePart(String partName, Uri fileUri) { 
    // https://github.com/iPaulPro/aFileChooser/blob/master/aFileChooser/src/com/ipaulpro/afilechooser/utils/FileUtils.java 
    // use the FileUtils to get the actual file by uri 
    File file = FileUtils.getFile(context, fileUri); 

    // create RequestBody instance from file 
    RequestBody requestFile = RequestBody.create(MediaType.parse(context.getContentResolver().getType(fileUri)), file); 

    // MultipartBody.Part is used to send also the actual file name 
    return MultipartBody.Part.createFormData(partName, file.getName(), requestFile); 

} 
}