文件讀寫操作

1.將byte[ ] 中的數據保存成文件

File file1 = new File(Environment.getExternalStorageDirectory()+"/h264");
File file2 = new File(file1,"521.h264");

if(file2.exists()){
   file2.delete();
}
file2.createNewFile();
FileOutputStream out = new FileOutputStream(file2);
out.write(byter);
out.flush();
out.clouse();


2.讀取文件，轉爲byte[]

String path = Environment.getExternalStorageDirectory()+"/h264/RGBA8888.bm ;

  File file = new File(path);

InputStream is = new FileInputStream(file);
byte[] b = getBytes(is);