如何在Android应用程序中取消相机

Question

如何取消相机，当用户单击Android模拟器中的相机上的左侧图标时。当我打开相机并捕获映像位图时，将image_cropping发送到裁剪图像。取消相机时，它不会回归以前的活动，它将用于Image_cropping活动。有人可以帮助我解决它。

我的ActivityResult代码

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);


  if(requestCode == CAMERA_REQUEST)
  {
    if (requestCode == 0 && resultCode == 0){
      Toast.makeText(getApplicationContext(),"Cancel Image Capture ", Toast.LENGTH_SHORT).show();
    }else {
      onCaptureImageResult(data);
    }
  }

  if (requestCode == PROFILE_GALLERY && resultCode == RESULT_OK)
  {
    Uri selectedImage = data.getData();
    String[] filePathColumn = {MediaStore.Images.Media.DATA};
    Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
    cursor.moveToFirst();

    int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
    String imgDecodableString = cursor.getString(columnIndex);
    cursor.close();

    editor.putString("profile_picformat", imgDecodableString);
    editor.commit();

    Intent selfiSrc = new Intent(this, Image_Cropping.class);
    finish();
    startActivity(selfiSrc);
  }
}


btnCamera.setOnClickListener(new View.OnClickListener()
{
  @Override
  public void onClick(View v)
  {
    SimpleDateFormat s = new SimpleDateFormat("ddMMyyyyhhmmss");
    String picformat = "IMG_" + 0 + "_" + s.format(new Date()) + ".png";
    Log.e(" picformat ", " = " + picformat);

    Intent i = new Intent(Filter_Screen.this , Image_Cropping.class );
    startActivity(i);

    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    String extr = Environment.getExternalStorageDirectory().toString() + File.separator + "classNKK_ProfilePic";
    File myPath = new File(extr, picformat);
    cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(myPath));
    startActivityForResult(cameraIntent, CAMERA_REQUEST);

    Log.e("Camera", " Open");
    String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
    String imageUserProfile_path = baseDir + "/classNKK_ProfilePic/" + picformat;
    editor.putString("profile_picformat", imageUserProfile_path);
    editor.commit();

  }
});

这是我的想象中的类别

public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.img_cropping);
  mCropImageView = (CropImageView) findViewById(R.id.CropImageView);

  dbhelper = new MyDbHelper(this);
  dbhelper.onOpen(db);

  Log.e(" In", " onCreate Method !!!!!!!!!!");
  sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
  str_Authentication_Token = sharedPreferences.getString("strAuthentication_Token", "");
  str_UserId = sharedPreferences.getString("strUserId", "");
  str_UserName = sharedPreferences.getString("strUserName", "");
  str_UserRole = sharedPreferences.getString("strUserRole", "");
  str_LoginUserName = sharedPreferences.getString("strLogin_UserName" , "" );
  Log.e("  ", " str_Authentication_Token= " + str_Authentication_Token + " str_UserId= " + str_UserId + " str_UserName= " + str_UserName + "str_UserRole= " + str_UserRole + " str_LoginUserName= " + str_LoginUserName);
  getProfile_PicFormat = sharedPreferences.getString("profile_picformat", "");
  Log.e("getImagePath ", " getPicFormat = " + getProfile_PicFormat);

  Bitmap bmp = BitmapFactory.decodeFile(getProfile_PicFormat);
  if (savedInstanceState == null) {
    mCropImageView.setImageBitmap(bmp);
  }
  mCropImageView.setAspectRatio(DEFAULT_ASPECT_RATIO_VALUES, DEFAULT_ASPECT_RATIO_VALUES);

  btnCropImage = (Button)findViewById(R.id.button_CropImage);
  btnCropImage.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        mCropImageView.getCroppedImageAsync(mCropImageView.getCropShape(), 0, 0);
    }
  });

  buttonDone = (Button)findViewById(R.id.button_Done);
  buttonDone.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v)
    {
        Intent i = new Intent(Image_Cropping.this , Filter_Screen.class);
        finish();
        startActivity(i);
    }
  });
}

// Saves the state upon rotating the screen/restarting the activity
@Override
protected void onSaveInstanceState(@SuppressWarnings("NullableProblems") Bundle bundle) {
  super.onSaveInstanceState(bundle);
  bundle.putInt(ASPECT_RATIO_X, mAspectRatioX);
  bundle.putInt(ASPECT_RATIO_Y, mAspectRatioY);
}

// Restores the state upon rotating the screen/restarting the activity
@Override
protected void onRestoreInstanceState(@SuppressWarnings("NullableProblems") Bundle bundle) {
  super.onRestoreInstanceState(bundle);
  mAspectRatioX = bundle.getInt(ASPECT_RATIO_X);
  mAspectRatioY = bundle.getInt(ASPECT_RATIO_Y);
}

@Override
protected void onStart() {
  super.onStart();
  mCropImageView.setOnSetImageUriCompleteListener(this);
  mCropImageView.setOnGetCroppedImageCompleteListener(this);
}

@Override
protected void onStop() {
  super.onStop();
  mCropImageView.setOnSetImageUriCompleteListener(null);
  mCropImageView.setOnGetCroppedImageCompleteListener(null);
}

@Override
public void onSetImageUriComplete(CropImageView view, Uri uri, Exception error) {
  if (error == null) {
    Toast.makeText(mCropImageView.getContext(), "Image load successful", Toast.LENGTH_SHORT).show();
  } else {
    Toast.makeText(mCropImageView.getContext(), "Image load failed: " + error.getMessage(), Toast.LENGTH_LONG).show();
  }
}

@Override
public void onGetCroppedImageComplete(CropImageView view, Bitmap bitmap, Exception error) {
  if (error == null)
  {
    croppedImage = bitmap;
    int bitMapWidth = croppedImage.getWidth();
    int bitmapHeight = croppedImage.getHeight();
    Log.e("croppedImage","="+croppedImage + " bitMapWidth="+bitMapWidth + " bitmapHeight="+bitmapHeight);

    String[] finalPath = getProfile_PicFormat.split("/");
    final String split_CroppedString = finalPath[finalPath.length - 1];
    Log.e(" split_CroppedString ", " = " + split_CroppedString);

    String extr = Environment.getExternalStorageDirectory().toString() + File.separator + "classNKK_ProfilePic";
    cropped_ImagePath = "Cropped_"+split_CroppedString;
    Log.e("cropped_ImagePath "," ======>>" + cropped_ImagePath );
    File myPath = new File(extr, cropped_ImagePath);
    FileOutputStream fileOutputStream = null;
    try
    {
      fileOutputStream = new FileOutputStream(myPath);
      croppedImage.compress(Bitmap.CompressFormat.JPEG, 100, fileOutputStream);
      fileOutputStream.flush();
      fileOutputStream.close();

    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }

    editor = sharedPreferences.edit();
    String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
    String cropped_UserProfilepath = baseDir + "/classNKK_ProfilePic/" + cropped_ImagePath;
    editor.putString("croppedImagePath", cropped_UserProfilepath);
    editor.commit();

    String str_ProfilePic_UpLoadStatus = "0";
    db = dbhelper.getWritableDatabase();
    db.execSQL("update Inspector set ProfilePICURL = '" + cropped_ImagePath + "' , ProfilePic_UpLoadStatus='"+0+"', DownLoadStatus='1' where Inspector_Id = '" + str_UserId + "'");
    db.execSQL("update ALL_Post set ProfilePICURL = '" + cropped_ImagePath + "' , DownLoad_Status='1' where UserId = '" + str_UserId + "'");
    Log.e("Updated  ", " Succesfully !!! ImageName = " + cropped_ImagePath);

    sendPostRequest(cropped_ImagePath);
    Log.e("Cropped ", " Profile Pic  UpLoaded SuccesFully !!!!!!!!!!!!!! ");

    String delete_cropped_UserProfilepath = baseDir + "/classNKK_ProfilePic/" + split_CroppedString;
    File file= new File(delete_cropped_UserProfilepath);
    if(file.exists())
    {
      file.delete();
      Log.e("Original "," File is deleted !!!");
    }

    Intent i = new Intent(Image_Cropping.this , Filter_Screen.class);
    startActivity(i);
    finish();


  } else {
    Toast.makeText(mCropImageView.getContext(), "Image Crop failed: " + error.getMessage(), Toast.LENGTH_LONG).show();
  }
}

private Uri getCaptureImageOutputUri() {
  Uri outputFileUri = null;
  File getImage = getExternalCacheDir();
  if (getImage != null) {
    outputFileUri = Uri.fromFile(new File(getImage.getPath(), "pickImageResult.jpeg"));
  }
  return outputFileUri;
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (resultCode == Activity.RESULT_OK) {
    Uri imageUri = getPickImageResultUri(data);
    ((CropImageView) findViewById(R.id.CropImageView)).setImageUriAsync(imageUri);
  }
}

public Uri getPickImageResultUri(Intent data) {
  boolean isCamera = true;
  if (data != null) {
    String action = data.getAction();
    isCamera = action != null && action.equals(MediaStore.ACTION_IMAGE_CAPTURE);
  }
  return isCamera ? getCaptureImageOutputUri() : data.getData();
}

提前感谢

Answer 1

    btnCamera.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                SimpleDateFormat s = new SimpleDateFormat("ddMMyyyyhhmmss");
                String picformat = "IMG_" + 0 + "_" + s.format(new Date()) + ".png";
                Log.e(" picformat ", " = " + picformat);

                Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                String extr = Environment.getExternalStorageDirectory().toString() + File.separator + "classNKK_ProfilePic";
                File myPath = new File(extr, picformat);
                cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(myPath));
                startActivityForResult(cameraIntent, CAMERA_REQUEST);

                Log.e("Camera", " Open");
                String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
                String imageUserProfile_path = baseDir + "/classNKK_ProfilePic/" + picformat;
                editor.putString("profile_picformat", imageUserProfile_path);
                editor.commit();

               }
        });




 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

   if(requestCode == CAMERA_REQUEST)
    {

        if (requestCode == 0 && resultCode == 0){

            Toast.makeText(getApplicationContext(),"Canceling Image Capture ", Toast.LENGTH_SHORT).show();

        }else {

            onCaptureImageResult(data);

        }

    }
   if (requestCode == PROFILE_GALLERY && resultCode == RESULT_OK)
    {
        Uri selectedImage = data.getData();
        String[] filePathColumn = {MediaStore.Images.Media.DATA};
        Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String imgDecodableString = cursor.getString(columnIndex);
        cursor.close();

        editor.putString("profile_picformat", imgDecodableString);
        editor.commit();

        Intent selfiSrc = new Intent(this, Image_Cropping.class);
        finish();
        startActivity(selfiSrc);

     }
}

 private void onCaptureImageResult(Intent data) {

  Intent selfiSrc = new Intent(this, Image_Cropping.class);
        startActivity(selfiSrc);
         finish();
  }