Google Android - это несложно

Код: Выделить всё

	private void writeData(String sData) throws IOException { 
		File fileName = null;
		String sdState = android.os.Environment.getExternalStorageState();
		if (sdState.equals(android.os.Environment.MEDIA_MOUNTED)) {
		    File sdDir = android.os.Environment.getExternalStorageDirectory();
		    fileName = new File(sdDir, "cache/GPSLog.txt");
		    } else {
		        fileName = this.getCacheDir();
		    }
		if (!fileName.exists())
		    fileName.mkdirs();
		try {
		    FileWriter f = new FileWriter(fileName);
		    f.write(sData);
		    f.flush();
		    f.close();
		} catch (Exception e) {
			Log.d("myLogs", fileName.toString());
		}

Код: Выделить всё

	private void writeData(String sData) throws IOException {
		File fileName = null;
		File directory = null;
		String sdState = android.os.Environment.getExternalStorageState();
		if (sdState.equals(android.os.Environment.MEDIA_MOUNTED)) {
			File sdDir = android.os.Environment.getExternalStorageDirectory();
			directory = new File(sdDir, "cache");
		} else {
			directory = this.getCacheDir();
		}
		if (!directory.exists()) directory.mkdirs();
		fileName = new File(directory, "GPSLog.txt");//
		try {
			FileWriter f = new FileWriter(fileName);
			f.write(sData);
			f.flush();
			f.close();
		} catch (Exception e) {
			Log.d("myLogs", fileName.toString() + " error = " + e.getMessage());
		}
	}

Код: Выделить всё

directory = new File(sdDir, "cache/GPSLog.txt");
directory.delete();