往sd卡中写文件

<span style="white-space:pre">	</span>private void writeFileToSD(String s) {
		String sdStatus = Environment.getExternalStorageState();
		// 获取SDCard状态,如果SDCard插入了手机且为非写保护状态
		if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) {
			Toast.makeText(getApplicationContext(), "SDCard不存在", 1).show();
			return;
		}
		try {
			String fileName = "huanggangshifan.txt";
			File file = new File(Environment.getExternalStorageDirectory()
					+ "/" + fileName);
			if (!file.exists()) {
				file.createNewFile();
			}
			// 一个参数默认是覆盖原来的文件内容的，可以构造的时候传两个参数第二个设置成true表示追加
			FileOutputStream stream = new FileOutputStream(file);
			byte[] buf = s.getBytes();
			stream.write(buf);
			stream.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}