Android的：如何删除内部图像文件 [英] Android: how to delete internal image file

问题描述

我想要做的：删除我的应用程序从专用内部存储的图像文件。我保存在内部存储的图像，使它们的应用程序卸载删除。

What i want to do: delete an image file from the private internal storage in my app. I save images in internal storage so they are deleted on app uninstall.

我已经成功地创建并保存：

I have successfully created and saved:

String imageName = System.currentTimeMillis() + ".jpeg";
FileOutputStream fos = openFileOutput(imageName, Context.MODE_PRIVATE);
bitmap.compress(Bitmap.CompressFormat.JPEG, 35, fos);

这是我收到过

bitmap = BitmapFactory.decodeStream(inputStream);

我能够再次找到该图像显示：

I am able to retrieve the image later for display:

FileInputStream fis = openFileInput(imageName);
ByteArrayOutputStream bufStream = new ByteArrayOutputStream();
DataOutputStream outWriter = new DataOutputStream(bufStream);

int ch;
while((ch = fis.read()) != -1)
    outWriter.write(ch);

outWriter.close();
byte[] data = bufStream.toByteArray();
bufStream.close();
fis.close();

imageBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);

我现在想永久删除此文件。我曾尝试创建一个新的文件，并删除它，但找不到该文件：

I now want to delete this file permanently. I have tried creating a new file and deleting it, but the file is not found:

File file = new File(imageName);
file.delete();

我已经阅读了Android开发者网站，我必须使用 openFileInput（...）方法，该方法返回一个InputStream让我阅读的内容，打开专用的内部文件，我真的不关心 - 我只是想删除

I have read on the android developer website that i must open private internal files using the openFileInput(...) method which returns an InputStream allowing me to read the contents, which i don't really care about - i just want to delete it.

任何人都可以点我在正确的方向删除存储在内部存储的文件？

can anyone point me in the right direction for deleting a file which is stored in internal storage?

推荐答案

（ERG），我发现自己的答案。答案很简单太：（

Erg, I found the answer myself. Simple answer too :(

所有你需要做的就是调用 DELETEFILE（imageName）方法。

All you have to do is call the deleteFile(imageName) method.

if(activity.deleteFile(imageName))
    Log.i(TAG, "Image deleted.");

完成！

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