Android片段中的相机空指针？

Question

There's lots of questions on the same topic, however none of them provided me an answer that I needed. I've tried a lot of solutions,and none of them is working for me so far. I stuck while trying to take picture in my fragment using Android's Camera and take picture from gallery, it because I always get NullPointerException . this is my code while user click button for capture or taking picture from galery:

capture_dp.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                intent.putExtra(MediaStore.EXTRA_SCREEN_ORIENTATION, ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
                startActivityForResult(intent, TAKE_PHOTO_CODE);
                }
        });
add_galery_dp[counter2].setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                   Intent i = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

                   startActivityForResult(i,
                            PICK_FROM_GALLERY);
                    }
        });

this my method :

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

         super.onActivityResult(requestCode, resultCode, data);
                    if (requestCode == TAKE_PHOTO_CODE && data != null) {
                            selectedImagePath = getImagePath();
                            nama_foto[counter]=new File(path1,"foto"+GetTime.getCurrentDate("yyyyMMddhhmmss")+".jpg");
                            FileOutputStream fos = null;
                            if(! nama_foto[counter].exists())   
                            {
                                try {
                                    Bitmap bitmap= rotateBitmap(selectedImagePath);
        //                           nama_foto[counter].createNewFile();
        //                          copyFile(new File(selectedImagePath),  nama_foto[counter]); //untuk copy file dari selected image path ke nama_foto
                                    fos = new FileOutputStream( nama_foto[counter]);
                                    bitmap.compress(Bitmap.CompressFormat.JPEG, 70, fos);
                                    fos.flush();
                                    fos.close();
        //                            MediaStore.Images.Media.insertImage(getActivity().getContentResolver(), bitmap, "Screen", "screen");
                                } catch (FileNotFoundException e) {
                                    throw new RuntimeException(e);
                                } catch (IOException e) {
                                    e.printStackTrace();
                                }
                            }
                                foto_dp[counter].setImageBitmap(rotateBitmap(selectedImagePath));
                    }

                    else if (requestCode == PICK_FROM_GALLERY&& data != null) {
                                Uri selectedImageUri = data.getData();
                                selectedImagePath = getPath(selectedImageUri);
                                System.out.println("Image Path : " + selectedImagePath);
        //                      File photo = new File(selectedImagePath);
                                nama_foto[counter]=new File(path1,"foto"+GetTime.getCurrentDate("yyyyMMddhhmmss")+".jpg");  
                                FileOutputStream fos = null;
                                if(! nama_foto[counter].exists())   
                                {
                                    try {
        //                               nama_foto[counter].createNewFile();
        ////                                 foto_dp[counter].setImageBitmap(resizeimage(selectedImagePath));
        //                               rotateBitmap(selectedImagePath);
        //                                copyFile(new File(selectedImagePath),  nama_foto[counter]);
                                        Bitmap bitmap= rotateBitmap(selectedImagePath);
                                        fos = new FileOutputStream( nama_foto[counter]);
                                       bitmap.compress(Bitmap.CompressFormat.JPEG, 70, fos);
                                       fos.flush();
                                       fos.close();
        //                               MediaStore.Images.Media.insertImage(getActivity().getContentResolver(), bitmap, "Screen", "screen");
                                    } catch (FileNotFoundException e) {
                                        throw new RuntimeException(e);
                                    } catch (IOException e) {
                                        e.printStackTrace();
                                    }
                                }
                             foto_dp[counter].setImageBitmap(rotateBitmap(selectedImagePath));
                    }
                    else{

                    }
                }

                public String getPath(Uri uri) {
                    String[] projection = { MediaStore.Images.Media.DATA };
                    Cursor cursor = getActivity().managedQuery(uri, projection, null, null, null);
                    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                    cursor.moveToFirst();
                    return cursor.getString(column_index);
                }

              //Method camera
                public Uri setImageUri() {
                    FileOutputStream out = null;
                      // Store image in dcim
                      nama_foto[counter] = new File(Environment.getExternalStorageDirectory() +"/android/data/ESPAJ/spaj_foto/"+GetTime.getCurrentDate("yyyyMMddhhmmss")+".jpg");
                      Uri imgUri = Uri.fromFile(nama_foto[counter]);
                      this.imgPath = nama_foto[counter].getAbsolutePath();
                      return imgUri;
                  }
                 public String getImagePath() {
    //               Log.i("tes", imgPath);
                        return imgPath;
                    }
    //resize             
            public Bitmap resizeimage(String path) throws FileNotFoundException {
                FileInputStream ostream = null;
                try {
                    ostream = new FileInputStream(path);
                     BitmapFactory.Options options = new BitmapFactory.Options();
                        options.inSampleSize = 1; //subsampling

                        int compress = 20;
                        BitmapFactory.decodeStream(ostream, null, options).compress(CompressFormat.JPEG, compress, new FileOutputStream(path));


    //                return BitmapFactory.decodeFile(path, o2);
                } catch (FileNotFoundException e) {

                    e.printStackTrace();
                }

                    return null;

                }   
    //decode memory image
            public static Bitmap decodeFile(String path) {
                try {
                    // Decode image size
                    BitmapFactory.Options o = new BitmapFactory.Options();
                    o.inJustDecodeBounds = true;
                    BitmapFactory.decodeFile(path, o);
                    // The new size we want to scale to
                    final int REQUIRED_SIZE = 250;

                    // Find the correct scale value. It should be the power of 2.
                    int scale = 4;
                    while (o.outWidth / scale / 2 >= REQUIRED_SIZE && o.outHeight / scale / 2 >= REQUIRED_SIZE)
                        scale *= 2;

                    // Decode with inSampleSize
                    BitmapFactory.Options o2 = new BitmapFactory.Options();
                    o2.inSampleSize = scale;
                    return BitmapFactory.decodeFile(path, o2);
                } catch (Throwable e) {
                    e.printStackTrace();
                }
                return null;

            }   

this is my logcat's history while taking picture :

    11-05 13:53:15.778: E/AndroidRuntime(11152): FATAL EXCEPTION: main
11-05 13:53:15.778: E/AndroidRuntime(11152): java.lang.RuntimeException: Unable to resume activity {id.co.ajsmsig.espaj/id.co.ajsmsig.espaj.Menu_SPPAJ}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=android:fragment:9, request=0, result=-1, data=null} to activity {id.co.ajsmsig.espaj/id.co.ajsmsig.espaj.Menu_SPPAJ}: java.lang.NullPointerException
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2613)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2641)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2127)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3550)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.access$700(ActivityThread.java:140)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.os.Handler.dispatchMessage(Handler.java:99)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.os.Looper.loop(Looper.java:137)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.main(ActivityThread.java:4895)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at java.lang.reflect.Method.invokeNative(Native Method)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at java.lang.reflect.Method.invoke(Method.java:511)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at dalvik.system.NativeStart.main(Native Method)
11-05 13:53:15.778: E/AndroidRuntime(11152): Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=android:fragment:9, request=0, result=-1, data=null} to activity {id.co.ajsmsig.espaj/id.co.ajsmsig.espaj.Menu_SPPAJ}: java.lang.NullPointerException
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3179)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2600)
11-05 13:53:15.778: E/AndroidRuntime(11152):    ... 13 more
11-05 13:53:15.778: E/AndroidRuntime(11152): Caused by: java.lang.NullPointerException
11-05 13:53:15.778: E/AndroidRuntime(11152):    at id.co.ajsmsig.espaj.DokumenPendukung.rotateBitmap(DokumenPendukung.java:794)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at id.co.ajsmsig.espaj.DokumenPendukung.onActivityResult(DokumenPendukung.java:734)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.Activity.dispatchActivityResult(Activity.java:5351)
11-05 13:53:15.778: E/AndroidRuntime(11152):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3175)
11-05 13:53:15.778: E/AndroidRuntime(11152):    ... 14 more

and this is my logcat's history while taking picture from camera :

11-05 15:48:13.578: E/AndroidRuntime(14633): java.lang.RuntimeException: Failure delivering result ResultInfo{who=android:fragment:1, request=1, result=-1, data=Intent { dat=content://media/external/images/media/22 (has extras) }} to activity {id.co.ajsmsig.espaj/id.co.ajsmsig.espaj.Menu_SPPAJ}: java.lang.NullPointerException

I hope somebody can help me to solve my problem. Thank you very much.

Answer 1

If you pass the extra parameter MediaStore.EXTRA_OUTPUT with the camera intent then camera activity will write the captured image to that path and it will not return the bitmap in the onActivityResult method.

If you will check the path which you are passing then you will know that actually camera had write the captured file in that path.

For further information you can follow this , this and this