How to Write Files to a Specific Folder on the SD Card?

Writing to a Folder on the SD Card

Your current code uses Environment.getExternalStorageDirectory() to save files to the root directory of the SD card. To write to a specific folder, follow these steps:

1. Get the SD card's absolute path:

   File sdCard = Environment.getExternalStorageDirectory();

2. Create the desired folder:

   File dir = new File (sdCard.getAbsolutePath() + "/myapplication/downloads");
   dir.mkdirs(); // Creates non-existent directories

3. Create a file within the folder:

   File file = new File(dir, "myfile.txt");

4. Open a file output stream and write data to the file:

   FileOutputStream f = new FileOutputStream(file);
   f.write(...);
   f.close();

Example Code:

File sdCard = Environment.getExternalStorageDirectory();
File dir = new File (sdCard.getAbsolutePath() + "/myapp/downloads");
dir.mkdirs();
File file = new File(dir, "file.txt");

FileOutputStream f = new FileOutputStream(file);
f.write("Hello world!".getBytes());
f.close();

With this approach, you can now write files to any specific folder on the SD card.

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