1.保存图片文件到SD卡
private InputStream Bitmap2IS(Bitmap bm) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
InputStream sbs = new ByteArrayInputStream(baos.toByteArray());
return sbs;
}
public void onClick_SaveImageToSDCard(View view) {
try {
FileOutputStream fos = new FileOutputStream(ALBUM_PATH
+ "/QRcode.png");
// InputStream is = getResources().getAssets().open("image.jpg");
InputStream is = Bitmap2IS(bit);
byte[] buf = new byte[4096];
int count = 0;
while ((count = is.read(buf)) >= 0) {
fos.write(buf, 0, count);
}
fos.close();
is.close();
/*
* byte[] buffer = new byte[8192]; int count = 0; while((count =
* is.read(buffer)) >= 0){ fos.write(buffer,0,count); } fos.close();
* is.close();
*/
Toast.makeText(this, "写入成功!", Toast.LENGTH_LONG).show();
} catch (Exception e) {
// TODO: handle exception
Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
}
}