public static void saveImageToGallery(Context context, Bitmap bmp){
// 首先保存图片
File appDir =new File(Environment.getExternalStorageDirectory(),"QRCode");
if (!appDir.exists()) {
appDir.mkdir();
}
String fileName = System.currentTimeMillis() +".jpg";
File file =new File(appDir, fileName);
try {
FileOutputStream fos =new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.JPEG,100, fos);
fos.flush();
fos.close();
}catch (FileNotFoundException e) {
e.printStackTrace();
}catch (IOException e) {
e.printStackTrace();
}
// 其次把文件插入到系统图库
try {
MediaStore.Images.Media.insertImage(context.getContentResolver(),
file.getAbsolutePath(), fileName,null);
}catch (FileNotFoundException e) {
e.printStackTrace();
}
// 最后通知图库更新
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {// 判断SDK版本是不是4.4或者高于4.4
String[] paths =new String[]{file.getAbsolutePath()};
MediaScannerConnection.scanFile(context, paths,null,null);
}else {
final Intent intent;
if (file.isDirectory()) {
intent =new Intent(Intent.ACTION_MEDIA_MOUNTED);
intent.setClassName("com.android.providers.media","com.android.providers.media.MediaScannerReceiver");
intent.setData(Uri.fromFile(Environment.getExternalStorageDirectory()));
}else {
intent =new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(file));
}
context.sendBroadcast(intent);
}
}
