拍摄后的Android作物图像

Question

我试图让用户在拍摄/从图库中选择后裁剪图像。现在，从画廊中选择作品后裁剪，但不是相机。以下是我的代码，我没有收到任何错误消息。我们跟着http://mobile.tutsplus.com/tutorials/android/capture-and-crop-an-image-with-the-device-camera/

//Camera button clicked 
    public void camera_click(View view) { 
     Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     cameraIntent.putExtra("return-data", true); 
     startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST); 

    } 
    //Result of camera capture 
    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     if (resultCode == RESULT_OK) { 
       //camera 
      if (requestCode == CAMERA_PIC_REQUEST) { 

       mImageCaptureUri = data.getData(); 
       performCrop(); 
      } 
      if (requestCode == PIC_CROP) { 
       //get the returned data 
       try{ 
       Bundle extras = data.getExtras(); 
//get the cropped bitmap 
       thumbnail = extras.getParcelable("data"); 
       //retrieve a reference to the ImageView 
       ImageView image = (ImageView) findViewById(R.id.test_image); 
//display the returned cropped image 
       image.setImageBitmap(thumbnail); 
       TextView imgTv = (TextView) findViewById(R.id.imageInfo); 
       String desc = imgTv.getText().toString(); 
       if (desc.equalsIgnoreCase("")) { 
        String errorMessage = "Please enter a description before submitting a photo."; 
        Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT); 
        toast.show(); 
       } else { 

       } 
       } 
       catch(Exception ex) 
       { 
        Log.i("err", ex.getMessage()); 
       } 
      } 
       //gallery selected 
      if (requestCode == SELECT_PHOTO) { 
       if (data != null) { 

        Cursor cursor = getContentResolver().query(data.getData(), null, null, null, null); 
        cursor.moveToFirst(); //if not doing this, 01-22 19:17:04.564: ERROR/AndroidRuntime(26264): Caused by: android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 1 
        int idx = cursor.getColumnIndex(ImageColumns.DATA); 
        String fileSrc = cursor.getString(idx); 
        thumbnail = BitmapFactory.decodeFile(fileSrc); //load preview image 
        thumbnail = android.graphics.Bitmap.createScaledBitmap(thumbnail, 100, 100, true); 
        // ImageView image = (ImageView) findViewById(R.id.test_image); 
        // image.setImageBitmap(thumbnail); 
        ImageButton cam = (ImageButton) findViewById(R.id.camera); 
        // cam.setVisibility(View.INVISIBLE); 
        ImageButton gal = (ImageButton) findViewById(R.id.gallery); 
        mImageCaptureUri = data.getData(); 
        // gal.setVisibility(View.INVISIBLE); 
        performCrop(); 

       } else { 
        //Log.d(LOG_TAG, "idButSelPic Photopicker canceled"); 
        // m_Tv.setText("Image selection canceled!"); 
       } 

      } 
     } 
    }//end onactivity results 

    //method to luanch crop image 
private void performCrop() { 
    try { 
     //call the standard crop action intent (the user device may not support it) 
     Intent cropIntent = new Intent("com.android.camera.action.CROP"); 


     cropIntent.setDataAndType(mImageCaptureUri, "image/*"); 
     //set crop properties 
     cropIntent.putExtra("crop", "true"); 
     //indicate aspect of desired crop 
     cropIntent.putExtra("aspectX", 1); 
     cropIntent.putExtra("aspectY", 1); 
     //indicate output X and Y 
     cropIntent.putExtra("outputX", 256); 
     cropIntent.putExtra("outputY", 256); 
     //retrieve data on return 
     cropIntent.putExtra("return-data", true); 
     //start the activity - we handle returning in onActivityResult 
     startActivityForResult(cropIntent, PIC_CROP); 
    } catch (ActivityNotFoundException anfe) { 
     //display an error message 
     Log.i("err", anfe.getLocalizedMessage()); 
     String errorMessage = "Your device doesn't support the crop action!"; 
     Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT); 
     toast.show(); 
     Intent myIntent = new Intent(); 
     startActivityForResult(myIntent, PIC_CROP); 
    } 
} 

Answer 1

此行可能给你这个问题：

mImageCaptureUri = data.getData(); 

删除这一点，并检查出来。

如果没有，我可以给你一个工作代码。

工作样本： 还包括这个库：https://github.com/lvillani/android-cropimage

@Override 
    public void onActivityResult(int requestCode, int resultCode, Intent data) { 
     // TODO Auto-generated method stub 
     switch (requestCode) { 
      case PICK_FROM_CAMERA: 


        doCrop(); 



       break; 

      case PICK_FROM_FILE: 
       if(data != null){ 
       mImageCaptureUri = data.getData(); 

       doCrop(); 
       } 
       break;   

      case CROP_FROM_CAMERA:  
       if(data != null){ 
       Bundle extras = data.getExtras(); 

       if (extras != null) {    
        Bitmap photo = extras.getParcelable("data"); 

        imagebutton.setImageBitmap(photo); 
        imagebutton.setScaleType(ScaleType.FIT_XY); 


       } 

       File f = new File(mImageCaptureUri.getPath());    

       if (f.exists()) f.delete(); 
       } 
       break; 

     } 
    } 

    private void doCrop() { 
     // TODO Auto-generated method stub 
     final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>(); 

     Intent intent = new Intent("com.android.camera.action.CROP"); 
//  intent.setClassName("com.android.camera", "com.android.camera.CropImage"); 
     intent.setType("image/*"); 

     List<ResolveInfo> list = getActivity().getPackageManager().queryIntentActivities(intent, 0); 

     int size = list.size(); 

     if (size == 0) { 
      Toast.makeText(getActivity(), "Can not find image crop app", Toast.LENGTH_SHORT).show(); 

      return; 
     } else { 
      intent.setData(mImageCaptureUri); 

      intent.putExtra("outputX", 200); 
      intent.putExtra("outputY", 200); 
      intent.putExtra("aspectX", 1); 
      intent.putExtra("aspectY", 1); 
      intent.putExtra("scale", true); 
      intent.putExtra("return-data", true); 

      if (size == 1) { 
       Intent i  = new Intent(intent); 
       ResolveInfo res = list.get(0); 

       i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name)); 

       startActivityForResult(i, CROP_FROM_CAMERA); 
      } else { 
       for (ResolveInfo res : list) { 
        final CropOption co = new CropOption(); 

        co.title = getActivity().getPackageManager().getApplicationLabel(res.activityInfo.applicationInfo); 
        co.icon  = getActivity().getPackageManager().getApplicationIcon(res.activityInfo.applicationInfo); 
        co.appIntent= new Intent(intent); 

        co.appIntent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name)); 

        cropOptions.add(co); 
       } 

       CropOptionAdapter adapter = new CropOptionAdapter(getActivity(), cropOptions); 

       AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
       builder.setTitle("Choose Crop App"); 
       builder.setAdapter(adapter, new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int item) { 
         startActivityForResult(cropOptions.get(item).appIntent, CROP_FROM_CAMERA); 
        } 
       }); 

       builder.setOnCancelListener(new DialogInterface.OnCancelListener() { 
        @Override 
        public void onCancel(DialogInterface dialog) { 

         if (mImageCaptureUri != null) { 
          getActivity().getContentResolver().delete(mImageCaptureUri, null, null); 
          mImageCaptureUri = null; 
         } 
        } 
       }); 

       AlertDialog alert = builder.create(); 

       alert.show(); 
      } 
     } 
    } 

CropOption类：

public class CropOption { 
    public CharSequence title; 
    public Drawable icon; 
    public Intent appIntent; 
} 

CropOptionAdapter：

public class CropOptionAdapter extends ArrayAdapter<CropOption> { 
    private ArrayList<CropOption> mOptions; 
    private LayoutInflater mInflater; 

    public CropOptionAdapter(Context context, ArrayList<CropOption> options) { 
     super(context, R.layout.crop_selector, options); 

     mOptions = options; 

     mInflater = LayoutInflater.from(context); 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup group) { 
     if (convertView == null) 
      convertView = mInflater.inflate(R.layout.crop_selector, null); 

     CropOption item = mOptions.get(position); 

     if (item != null) { 
      ((ImageView) convertView.findViewById(R.id.iv_icon)).setImageDrawable(item.icon); 
      ((TextView) convertView.findViewById(R.id.tv_name)).setText(item.title); 

      return convertView; 
     } 

     return null; 
    } 
}