android 怎么写文件日志到SD卡上

android 怎么写文件日志到SD卡上

android 如何写文件日志到SD卡上..

　　
public void writeFileToSD(String context) {
　　//使用RandomAccessFile 写文件 还是蛮好用的..推荐给大家使用...
　String sdStatus = Environment.getExternalStorageState();
　if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) {
　 Log.d("TestFile", "SD card is not avaiable/writeable right now.");
　 return;
　}
　try {
　 String pathName = "/sdcard/";
　 String fileName = "log.txt";
　 File path = new File(pathName);
　 File file = new File(pathName + fileName);
　 if (!path.exists()) {
　　Log.d("TestFile", "Create the path:" + pathName);
　　path.mkdir();
　 }
　 if (!file.exists()) {
　　Log.d("TestFile", "Create the file:" + fileName);
　　file.createNewFile();
　 }
　 RandomAccessFile raf = new RandomAccessFile(file, "rw");
　 raf.seek(file.length());
　 raf.write(context.getBytes());
　 raf.close();
　 //注释的也是写文件..但是每次写入都会把之前的覆盖..
　
　　} catch (Exception e) {
　 Log.e("TestFile", "Error on writeFilToSD.");
　}
}