CODEWITHSUNDEEP
javaandroidbufferedwriter
Eddie
Eddie

Reputation: 181

Write a String to a File in the Assets Folder

I have a .txt file in my Assets folder. I tried using BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(getAssets().open("---.txt")));

I get an error underlining (getAssets().open("---.txt"))); Saying

OutputStreamWriter(java.io.OutputStream) in OutputStreamWriter cannot be applied to (java.io.InputStream)

I don't know how to write to this file, and I need help. It would also be good if I knew how to erase everything that's already in that file and write in a blank file...(Sorry for being unclear).

I know I can do this using PrintWriter on PC, but I am learning Android now.

Upvotes: 2

Views: 5624

Answers (2)

nandsito
nandsito

Reputation: 3852

The assets folder is read-only, as well as its contents. If you wish to modify and save any modifications in an asset, consider storing a copy in the device storage, using Context.openFileOutput(). Here's an example without exception handling:

// copy the asset to storage

InputStream assetIs = getAssets().open(filename);
OutputStream copyOs = openFileOutput(filename, MODE_PRIVATE);

byte[] buffer = new byte[4096];
int bytesRead;

while ((bytesRead = assetIs.read(buffer)) != -1) {
    copyOs.write(buffer, 0, bytesRead);
}

assetIs.close();
copyOs.close();

// now you can open and modify the copy

copyOs = openFileOutput(filename, MODE_APPEND); 

BufferedWriter writer =
        new BufferedWriter(
                new OutputStreamWriter(copyOs));

Upvotes: 2

ITSGuru
ITSGuru

Reputation: 194

You cannot write any files to assets or any raw dir.

Where will it be located in the Android file system. So write your txt file in internal OR external storage.

Upvotes: 2

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