如何把assers中的zip解压到指定文件夹

assets名字，解压路径

get输入流，然后用文件输出流

public static void assetsToFile(Context ctx,String path,String outPath){
try{
InputStream in=ctx.getResources().getAssets().open(path);
File file=new File(outPath);
file.getParentFile().mkdirs();
FileOutputStream out=new FileOutputStream(file);
int index=0;
byte[] bt=new byte[4096];
while((index=in.read(bt))!=-1){
out.write(bt,0,index);
}
in.close();
out.close();
}catch(Exception e){e.printStackTrace();}
}