CODEWITHSUNDEEP
androidlistfileassets
user7935208
user7935208

Reputation:

How to refresh assets file list in android studio

I have a problem.

I want to copy file from assets forder(Path: Assets/Manual) to another directory(Environment.DIRECTORY_DOWNLOADS).

so I write source code like below.

private void copyAssetManual(){
    AssetManager assetManager = getAssets();
    String[] files = null;
    try{
        files = assetManager.list("Manual");
        Log.d(TAG, "Files String Array Length: " + files.length);
    }catch(IOException e){
        Log.d(TAG, e.getMessage());
    }

    for(String filename : files){
        Log.d(TAG, "copyAssetManual: " + filename);
        InputStream in = null;
        OutputStream out = null;
        try{
            in = assetManager.open("Manual/" + filename);
            out = new FileOutputStream(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toString() + "/" + filename);
            copyFile(in, out);
            in.close();
            in = null;
            out.flush();
            out.close();
            out = null;
        }catch(Exception e){
            Log.d(TAG, e.getMessage());
        }

        //Auto Execute Copied File
        File userManual = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), filename);
        String extension = MimeTypeMap.getFileExtensionFromUrl(filename);
        String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension.toLowerCase());
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.fromFile(userManual), mimeType);
        startActivity(intent);
    }
}

private void copyFile(InputStream in, OutputStream out) throws IOException{
    byte[] buffer = new byte[1024];
    int read;
    while((read = in.read(buffer)) != -1){
        out.write(buffer, 0, read);
    }
}

It does work!

But, when I replace file(Same file instead of diffrent file name) in assets folder(Path: Assets/Manual), this source code logged all previous file name list.

ex)

Assets Folder has AAA.pdf

This source code printed "copyAssetManual: AAA.pdf"

After that, I deleted AAA.pdf and copy BBB.pdf to Assets Folder(Path: Assets/Manual)

then this source code printed twice like below.

"copyAssetManual: AAA.pdf"

"copyAssetManual: BBB.pdf"

There is no AAA.pdf in Asset Folder NOW!

How can I treat this issue?

I don't need previous file name list(AAA.pdf)....

Help me Please..

Upvotes: 2

Views: 1221

Answers (2)

user7935208
user7935208

Reputation:

I finally treated it!

Just click Code Cleanup menu button.

Upvotes: 0

pantos27
pantos27

Reputation: 629

You cannot copy files into the assets folder. In the first code snippet you copied from the assets folder into the external sd card file system

Upvotes: 1

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