删除Android上的SD卡文件 [英] Delete file on Android SD card

问题描述

在我的应用程序可以拍摄照片和与此code保存：

In my application I can take a photo and save it with this code:

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

imageCaptureUri = Uri.fromFile(new File(context.getExternalFilesDir(null),
                        "tmp_image_" + String.valueOf(System.currentTimeMillis()) + ".jpg"));

intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, imageCaptureUri);
intent.putExtra("return-data", true);

我想从我的SD卡与此code删除文件：

I tried to delete the file from my SD card with this code:

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

if (f.exists() == true) 
{
    boolean state = f.delete();
    Toast.makeText(context, "" + state, Toast.LENGTH_LONG).show();
}

在吐司的输出是真实的，但该文件未在SD卡上删除。我测试了Android KitKat上，但它应该工作在较旧的Andr​​oid版本过多。你有我为什么不能删除照片什么想法？

The output of the Toast is true but the file is not deleted on the SD card. I tested this on Android KitKat but it should work on older android versions too. Do you have any ideas why I can't delete the photo?

我用 android.permission.WRITE_EXTERNAL_STORAG​​E 在我的清单文件。

推荐答案

奇巧对如何应用程序可以与否访问文件的一些变化。甚至在外部存储

KitKat have some changes on how apps can or not access files. Even in the external storage.

由于这是一个临时文件，我建议你把它迁移到你自己的应用空间，比如 context.getCacheDir 来代替。这可能会奏效。

Because that's a temp file, I suggest you to relocate it to your own app space like context.getCacheDir instead. That will probably work.

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