3

我正在开发一个安卓应用程序。它具有捕获的图像应显示在屏幕上的功能，我需要获取该图像路径，以便我可以将该图像发送到服务器。

我能够在屏幕上显示图像，但无法获得绝对图像路径。

我得到的路径如下：

content://media/external/images/media/1220
content://media/external/images/media/1221

如何获得实际的图像路径？

这是我的代码：

mintent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
mintent.putExtra(MediaStore.EXTRA_OUTPUT,
                 MediaStore.Images.Media.EXTERNAL_CONTENT_URI.toString());
startActivityForResult(mintent, 1);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);
  if ((data != null && !data.toString().equalsIgnoreCase("Intent {  }"))
      || requestCode == 1)
    switch (requestCode) {
      case 1:
        try {
          // Uri imageFileUri = data.getData();
          // String path=getRealPathFromURI(this,imageFileUri);
          // Bitmap bitmap = (Bitmap) data.getExtras().get("data");

          String photoPath = null;
          Bitmap bitmap = (Bitmap) data.getExtras().get("data");
          Intent intent = new Intent(this, Media.class);
          intent.putExtra("BitmapImage", bitmap);

          Bundle b = mintent.getExtras();
          if (b != null && b.containsKey(MediaStore.EXTRA_OUTPUT)) { // large
            // image?
            String timeStamp = new SimpleDateFormat(
                "yyyyMMdd_HHmmss").format(new Date());
            // Shouldn't have to do this ... but
            photoPath = MediaStore.Images.Media.insertImage(
                        getContentResolver(), bitmap, "Img" + timeStamp
                        + ".jpeg", null);
          }
        }
    }
}

photoPath值如上所示。

如何从该路径获取我的绝对图像路径。

4

4 回答 4

12

这是一个工作函数——

String selectedImagePath = getPath(selectedImageUri);

private String getPath(Uri uri) {

    String[] projection = { MediaStore.Images.Media.DATA };
    Cursor cursor = getContentResolver().query(uri, projection, null, null,null);

    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();

    return cursor.getString(column_index);
}
于 2013-12-31T11:28:32.020 回答
4

完整的工作解决方案

final private int PICK_IMAGE = 1;
    final private int CAPTURE_IMAGE = 2;
private String imgPath;

btnGallery.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent, ""), PICK_IMAGE);

            }
        });

        btnCapture.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
                startActivityForResult(intent, CAPTURE_IMAGE);
            }
        });


public Uri setImageUri() {
        // Store image in dcim
        File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/", "image" + new Date().getTime() + ".png");
        Uri imgUri = Uri.fromFile(file);
        this.imgPath = file.getAbsolutePath();
        return imgUri;
    }


    public String getImagePath() {
        return imgPath;
    }


@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode != Activity.RESULT_CANCELED) {
            if (requestCode == PICK_IMAGE) {
                selectedImagePath = getAbsolutePath(data.getData());
                imgUser.setImageBitmap(decodeFile(selectedImagePath));
            } else if (requestCode == CAPTURE_IMAGE) {
                selectedImagePath = getImagePath();
                imgUser.setImageBitmap(decodeFile(selectedImagePath));
            } else {
                super.onActivityResult(requestCode, resultCode, data);
            }
        }

    }

public String getAbsolutePath(Uri uri) {
        String[] projection = { MediaColumns.DATA };
        @SuppressWarnings("deprecation")
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        } else
            return null;
    }

public 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 = 70;

            // Find the correct scale value. It should be the power of 2.
            int scale = 1;
            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;

    }
于 2013-12-31T11:26:40.300 回答
0

试试这样，

    void onActivityResult(int requestCode, int resultCode, Intent data) {  
        if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
            Bitmap photo = (Bitmap) data.getExtras().get("data"); 
            imageView.setImageBitmap(photo);
            knop.setVisibility(Button.VISIBLE);
    
            // CALL THIS METHOD TO GET THE URI FROM THE BITMAP
            Uri tempUri = getImageUri(getApplicationContext(), photo);
    
            // CALL THIS METHOD TO GET THE ACTUAL PATH
            File finalFile = new File(getRealPathFromURI(tempUri));
    
            System.out.println(mImageCaptureUri);
        }  
    }
    
    public Uri getImageUri(Context inContext, Bitmap inImage) {
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
        String path = Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
        return Uri.parse(path);
    }
    
    public String getRealPathFromURI(Uri uri) {
        String path = "";
        if (getContentResolver() != null) {
            Cursor cursor = getContentResolver().query(uri, null, null, null, null);
            if (cursor != null) {
                cursor.moveToFirst();
                int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
                path = cursor.getString(idx);
                cursor.close();
            }
        }
        return path;
    }
于 2021-11-04T02:19:05.703 回答
-2

在相机按钮上

        Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");

        File file = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));


        try {

            intent.putExtra("return-data", true);

            startActivityForResult(intent, CAMERA_REQUEST);
            } catch (ActivityNotFoundException e) {
            // Do nothing for now
            }

并在活动结果上写

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

             if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {  
              // Bitmap photo1 = (Bitmap) data.getExtras().get("data");
                 File file1 = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
                   Bitmap bitmap11 = decodeSampledBitmapFromFile(file1.getAbsolutePath(), 500, 300);
                  // 
                    }  
    }
于 2013-12-31T12:23:38.910 回答