assets目录文件复制到SD卡中

AssetManager am = context.getResources().getAssets();

InputStream iStream = null;

try {

iStream = am.open( "upload_app.png");

FileOutputStream fos = new FileOutputStream(Environment.getExternalStorageDirectory().getPath() + "/" + "upload_app.png");

byte[] buffer = new byte[1024]; //8192

int len;

while ((len = iStream.read(buffer)) > 0)

{

fos.write(buffer, 0, len);

}

fos.close();

iStream.close();

} catch (IOException e) {

e.printStackTrace();

}

}