在Android中利用camera intent获取捕获图像的路径

Question

private String getLastImagePath() {
    final String[] imageColumns = { MediaStore.Images.Media._ID,
            MediaStore.Images.Media.DATA };
    final String imageOrderBy = MediaStore.Images.Media._ID + " DESC";
    Cursor imageCursor = POS.this.getContentResolver().query(
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI, imageColumns,
            null, null, imageOrderBy);
    if (imageCursor.moveToFirst()) {
        // int id = imageCursor.getInt(imageCursor
        // .getColumnIndex(MediaStore.Images.Media._ID));
        String fullPath = imageCursor.getString(imageCursor
                .getColumnIndex(MediaStore.Images.Media.DATA));
        return fullPath;
    } else {
        return "";
    }
}

这段代码在Samsung tab中工作，但在Lenovo tab和i-ball tab中不工作。那么，有没有人能帮我找到另一种解决方法来做同样的事情呢？任何帮助都将不胜感激。谢谢你。

这是我的OnActivityResult：

if (requestCode == CmsInter.CAMERA_REQUEST && resultCode == RESULT_OK) {
    //Bitmap photo = null;
    //photo = (Bitmap) data.getExtras().get("data");

    String txt = "";
    if (im != null) {
        String result = "";
        //im.setImageBitmap(photo);
        im.setTag("2");
        int index = im.getId();
        String path = getLastImagePath();
        try {
            bitmap1 = BitmapFactory.decodeFile(path, options);
            bitmap = Bitmap.createScaledBitmap(bitmap1, 512, 400, false);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
            byte[] bytData = baos.toByteArray();
            try {
                baos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            result = Base64.encode(bytData);
            bytData = null;
        } catch (OutOfMemoryError ooM) {
            System.out.println("OutOfMemory Exception----->" + ooM);
            bitmap1.recycle();
            bitmap.recycle();
        } finally {
            bitmap1.recycle();
            bitmap.recycle();
        }
    }
}

Answer 1

像这样试试

像下面这样传递相机意图

Intent intent = new Intent(this);
startActivityForResult(intent, REQ_CAMERA_IMAGE);

并在捕获图像后编写OnActivityResult，如下所示

protected 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;
}

public Uri getImageUri(Context inContext, Bitmap inImage) {
    Bitmap OutImage = Bitmap.createScaledBitmap(inImage, 1000, 1000,true);
    String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), OutImage, "Title", null);
    return Uri.parse(path);
}