Question

我想将文件路径转换为uri。但我得到错误，说它无法解决uri。图像来自保存相机意图的图像。图像保存到此目录：getFilesDir（）;这是在应用程序。

在我的游标适配器中：

String imgPath = cursor.getString(cursor.getColumnIndexOrThrow( InventoryContract.InventoryEntry.COLUMN_PRODUCT_IMG_PATH ));
        String productName = cursor.getString(cursor.getColumnIndexOrThrow( InventoryContract.InventoryEntry.COLUMN_PRODUCT_NAME ));
        int productStock = cursor.getInt(cursor.getColumnIndexOrThrow( InventoryContract.InventoryEntry.COLUMN_PRODUCT_STOCK ));
        Uri uri = ContentUris.withAppendedId(InventoryContract.InventoryEntry.CONTENT_URI,
                cursor.getLong(cursor.getColumnIndexOrThrow( InventoryContract.InventoryEntry.COLUMN_PRODUCT_ID )));
        File imgFile = new File(imgPath);
        Uri imgURI = Uri.fromFile(imgFile);

        if(imgFile.exists()) {
            Log.v("image file" , String.valueOf(imgFile));
            //Bitmap bitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
            productImage.setImageURI(imgURI);
            Log.v("Image does exist", "file | " + String.valueOf(imgURI));
        }
        else {
            Log.v("bitmap --- ", "Could not find file | " + imgPath);
        }

其中一个错误行：

W/ImageView: resolveUri failed on bad bitmap uri: file:///data/user/0/com.example.android.inventoryapp/files/JPEG_20170710_094130_1552703275.jpg

Answer 1

尝试使用以下代码

 Uri uri =   Uri.fromFile(new File(filepath));

Answer 2

感谢大家的帮助。我找到了解决方案。文件路径很好，但我认为它是一个空文件。我不得不这样写：

private File createImageFile(Bitmap image) throws IOException {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";
        File directory = this.getFilesDir();

        // Save Bitmap
        this.photo = new File(directory, imageFileName + ".jpg");
        this.photo.createNewFile();
        // Write to/Compress the Bitmap from the camera intent to the file
        FileOutputStream fos = new FileOutputStream(this.photo);
        image.compress(Bitmap.CompressFormat.PNG, 90, fos);
        fos.close();

        // path to file
        this.imgPath = this.photo.getAbsolutePath();
        return this.photo;
    }

Android - 将文件路径转换为uri（不工作）

2 个答案: