This will create a folder called TestFolder in /storage/emulated/0/ and write
to a text file called MyTest.txt in that folder.
File newFolder;//path to folder
File file;//path to file
public void writeData() {
createFolderIfNoneExists();
FileWriter writer = null;
try {
writer = new FileWriter(file);
// Writes the content to the file
writer.write("This\n is\n an\n example\n");
writer.flush();
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public void createFolderIfNoneExists(){
try {
newFolder = new File(Environment.getExternalStorageDirectory(), "TestFolder");
if (!newFolder.exists()) {
newFolder.mkdir();
}
try {
file = new File(newFolder, "MyTest" + ".txt");
file.createNewFile();
} catch (Exception ex) {
Log.i("TAG", "Exception: " + ex);
}
} catch (Exception e) {
Log.i("TAG", "Exception 2: " + e);
}
}
To view the contents of the file you will need a reference to the folders path (The ‘folder’ variable in the above code) and the name of the file.
then use this code:
Retrieve file from SD card
seanmcateer 