android将Bitmap对象保存到SD卡中的方法

Bitmap logoBitmap = BitmapFactory.decodeResource(mcontext.getResources(), R.drawable.arcnote_logo);
ByteArrayOutputStream logoStream = new ByteArrayOutputStream();
boolean res = logoBitmap.compress(Bitmap.CompressFormat.PNG,100,logoStream);
//将图像读取到logoStream中
byte[] logoBuf = logoStream.toByteArray();
//将图像保存到byte[]中
Bitmap temp = BitmapFactory.decodeByteArray(logoBuf,0,logoBuf.length);
//将图像从byte[]中读取生成Bitmap 对象 temp
saveMyBitmap("tttt",temp);
//将图像保存到SD卡中
public void saveMyBitmap(String bitName,Bitmap mBitmap){
File f = new File("/sdcard/" + bitName + ".png");
try {
f.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
}
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(f);
} catch (Exception e) {
e.printStackTrace();
}
mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);
try {
fOut.flush();
} catch (IOException e) {
e.printStackTrace();
}
try {
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}