android的图片保存和读取

//返回图片的字节
public byte[] loadTexttureIcon(String path){
Bitmap  image =  BitmapFactory.decodeFile(path);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] picture=baos.toByteArray();
byte[] data = picture;
return  data;
}
//保存图片
private void saveTexture(Bitmap bmp,String path) {
//Bitmap bmp=BitmapFactory.decodeByteArray(data, 0, data.length);
File file=new File(path);
if(!file.exists()){
File vDirPath = file.getParentFile();
vDirPath.mkdirs();
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
try {
BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream(file));
bmp.compress(Bitmap.CompressFormat.JPEG, 80, bos);
try {
bos.flush();
bos.close();
} catch (IOException e) {
e.printStackTrace();
}

} catch (FileNotFoundException e) {
e.printStackTrace();
}
}