캡처 후 이미지 업로드 - Android

Question

내가하려는 것은 이미지를 캡처하여 이미지보기에서보고이를 파이어베이스 저장소에 저장하는 것입니다.

내 코드 :

는

public class WaterConsumptionPage extends Fragment { 

private ImageView imageView; 
private Button capture, upload; 
static final int CAM_REQUEST = 1; 
private StorageReference mStorageRef; 
private FirebaseAuth mAuth; 
private DatabaseReference dbRef; 
private ProgressDialog mProgress; 
private Bitmap photo; 
private FirebaseUser user; 
private Uri uri; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.water_consumption_page, container, false); 

    mStorageRef = FirebaseStorage.getInstance().getReference(); 
    mAuth = FirebaseAuth.getInstance(); 
    dbRef = FirebaseDatabase.getInstance().getReference(); 
    user = mAuth.getCurrentUser(); 

    imageView = rootView.findViewById(R.id.water_image); 
    capture = rootView.findViewById(R.id.water_capture); 
    upload = rootView.findViewById(R.id.water_upload); 

    upload.setEnabled(false); 

    capture.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent cam_intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
      if(cam_intent.resolveActivity(getActivity().getPackageManager()) != null){ 
       startActivityForResult(cam_intent, CAM_REQUEST); 
      } 
     } 
    }); 

    mProgress = new ProgressDialog(getContext()); 
    upload.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      mProgress.setMessage("Uploading Image..."); 
      mProgress.show(); 

      StorageReference filepath = mStorageRef.child("Photos").child(user.getUid()).child("Water").child(uri.getLastPathSegment()); 
      filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() { 
       @Override 
       public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) { 
        mProgress.dismiss(); 
        Toast.makeText(getContext(), "Upload Finished...", Toast.LENGTH_LONG).show(); 
        Intent i = new Intent(getContext(), WaterConsumption.class); 
        startActivity(i); 
       } 
      }).addOnFailureListener(new OnFailureListener() { 
       @Override 
       public void onFailure(@NonNull Exception e) { 
        mProgress.dismiss(); 
        Toast.makeText(getContext(), "Upload has stopped.", Toast.LENGTH_LONG).show(); 
       } 
      }); 
     } 
    }); 

    return rootView; 
} 

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

    if(requestCode == CAM_REQUEST && data != null){ 
     upload.setEnabled(true); 
     uri = data.getData(); 
     Bundle extras = data.getExtras(); 
     photo = (Bitmap) extras.get("data"); 
     imageView.setImageBitmap(photo); 

    } 
} 

오류 : 나는 또한 내가 이미지를 저장할 수 있는지 테스트하는)합니다 (하여 onActivityResult에서 내부 아래에이 코드를 퍼팅 시도

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.akoni.conread, PID: 13901 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getLastPathSegment()' on a null object reference at com.example.akoni.conread.WaterConsumptionPage$2.onClick(WaterConsumptionPage.java:87) at android.view.View.performClick(View.java:5265) at android.view.View$PerformClick.run(View.java:21534) at android.os.Handler.handleCallback(Handler.java:815) at android.os.Handler.dispatchMessage(Handler.java:104) at android.os.Looper.loop(Looper.java:207) at android.app.ActivityThread.main(ActivityThread.java:5728) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

,하지만, 난 여전히 가지고 또 다른 오류 (아래).

StorageReference filepath = mStorageRef.child("Photos").child(user.getUid()).child("Water").child(uri.getLastPathSegment()); 
filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() { 
     @Override 
     public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) { 
       mProgress.dismiss(); 
       Toast.makeText(getContext(), "Upload Finished...", Toast.LENGTH_LONG).show(); 
       Intent i = new Intent(getContext(), WaterConsumption.class); 
        startActivity(i); 
       } 
     }).addOnFailureListener(new OnFailureListener() { 
       @Override 
       public void onFailure(@NonNull Exception e) { 
        mProgress.dismiss(); 
        Toast.makeText(getContext(), "Upload has stopped.", Toast.LENGTH_LONG).show(); 
       } 
}); 

오류 :

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.akoni.conread, PID: 14526 java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=65537, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.example.akoni.conread/com.example.akoni.conread.TabMenu}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getLastPathSegment()' on a null object reference at android.app.ActivityThread.deliverResults(ActivityThread.java:3929) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3972) at android.app.ActivityThread.-wrap16(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1537) at android.os.Handler.dispatchMessage(Handler.java:111) at android.os.Looper.loop(Looper.java:207) at android.app.ActivityThread.main(ActivityThread.java:5728) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getLastPathSegment()' on a null object reference at com.example.akoni.conread.WaterConsumptionPage.onActivityResult(WaterConsumptionPage.java:120) at android.support.v4.app.FragmentActivity.onActivityResult(FragmentActivity.java:151) at android.app.Activity.dispatchActivityResult(Activity.java:6502) at android.app.ActivityThread.deliverResults(ActivityThread.java:3925) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3972)  at android.app.ActivityThread.-wrap16(ActivityThread.java)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1537)  at android.os.Handler.dispatchMessage(Handler.java:111)  at android.os.Looper.loop(Looper.java:207)  at android.app.ActivityThread.main(ActivityThread.java:5728)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679) 

나는 capture the image and view it to the imageView first을 원하고 중포 기지에 이미지를 저장 upload을 클릭합니다.

도움 주셔서 감사합니다. 나는이 라인은 data.getIntent()는 아무 것도 반환하지 유발하는 것이라고 생각하기 때문에

super.onActivityResult(requestCode, resultCode, data); 

:

Answer 1

당신은 코드 줄을 제거해야합니다.

확인이 필요하면 resultCode도 확인해야합니다. 다음은 예제입니다.

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (requestCode == CAM_REQUEST && resultCode == RESULT_OK) { 
     Uri uri = data.getData(); 
    } 
    }