从存储中删除图像

Question

I want to delete an image file from storage but it returns false.

I created in my app, I can delete it but when I reinstall my app I can show it but I can't delete it

Here's my code:

if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
    File file = new File(cartPostalDbs.get(position).getFilePath());
    boolean deleted = file.delete();
    if (deleted) {
        cartPostalDbs.remove(mPos);
        notifyDataSetChanged();
    } else {
        Toast.makeText(context, "Can Not Delete File", Toast.LENGTH_SHORT).show();
    }
}

Here's my file path

/storage/emulated/0/Pictures/yadim/1/1558.jpg

and I check PERMISSION and use this permission:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />

Answer 1

That's what you need, it works in multiple cases:

•If you want to delete a directory ( folder ) •If the file/directory that you want to delete doesn't exist

here is the code:

public void deleteFile(String path) {
    File file = new File(path);

    if (!file.exists()) return;

    if (file.isFile()) {
        file.delete();
        return;
    }

    File[] fileArr = file.listFiles();

    if (fileArr != null) {
        for (File subFile : fileArr) {
            if (subFile.isDirectory()) {
                deleteFile(subFile.getAbsolutePath());
            }

            if (subFile.isFile()) {
                subFile.delete();
            }
        }
    }

    file.delete();
}

usage:

deleteFile(cartPostalDbs.get(position).getFilePath());

your final code should look like this:

if (ContextCompat.checkSelfPermission(context, 
Manifest.permission.WRITE_EXTERNAL_STORAGE) == 
PackageManager.PERMISSION_GRANTED) {
try {
deleteFile(cartPostalDbs.get(position).getFilePath());
boolean deleted = true;
} catch ( Exception e ) { boolean deleted = false; }
if (deleted) {
    cartPostalDbs.remove(mPos);
    notifyDataSetChanged();
} else {
    Toast.makeText(context, "Can Not Delete File", Toast.LENGTH_SHORT).show();
}
}