我创建了一个应用程序,允许用户从图库中选择图片或从相机拍照并上传到Web服务器。这段代码运行良好。现在,在另一个屏幕上,我正在从Web服务器下载图像并将其存储在SD卡中。问题是,如果从图库中选择图像,则该图像将显示在图像视图中,但如果从相机拍摄图像,则即使文件存在于SD卡中,该图像也不会显示在图像视图中。
显示图像和从服务器下载的代码
显示图像和从服务器下载的代码
private static class DownloadImage extends AsyncTask<String, Void, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(String... params) {
String filePath = downloadFile("my web service");
return filePath;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (result.equalsIgnoreCase("")) {
ivProfilePic.setImageDrawable(context.getResources().getDrawable(R.drawable.user_default));
progressBar.setVisibility(View.GONE);
} else {
profilePicPath = result;
Bitmap bitmapProfilePic = BitmapFactory.decodeFile(profilePicPath);
ivProfilePic.setImageBitmap(bitmapProfilePic);
progressBar.setVisibility(View.GONE);
}
}
}
public static String downloadFile(String url, String dest_file_path) {
try {
File dest_file = new File(dest_file_path);
URL u = new URL(url);
URLConnection conn = u.openConnection();
int contentLength = conn.getContentLength();
DataInputStream stream = new DataInputStream(u.openStream());
byte[] buffer = new byte[contentLength];
stream.readFully(buffer);
stream.close();
DataOutputStream fos = new DataOutputStream(new FileOutputStream(dest_file));
fos.write(buffer);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
return "";
} catch (IOException e) {
return "";
}
return dest_file_path;
}