使用MediaScannerConnection SCANFILE来扫描下载的图像文件 [英] Use MediaScannerConnection scanFile To Scan Downloaded Image File
本文介绍了使用MediaScannerConnection SCANFILE来扫描下载的图像文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我工作的一个应用程序中,我保存的图像(S)到一个目录但图像不会出现在画廊,直到我重新启动手机。
I am working on an app in which I save image(s) to a directory but the Images wont show up in gallery until I restart the phone.
下面是我的code段
public class SaveTask extends AsyncTask<String , String , String>
{
private Context context;
private ProgressDialog pDialog;
String image_url;
URL myFileUrl;
String myFileUrl1;
Bitmap bmImg = null;
File file ;
public SaveTask(Context context) {
this.context = context;
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pDialog = new ProgressDialog(context);
pDialog.setMessage("Downloading Image ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
try {
myFileUrl = new URL(args[0]);
//myFileUrl1 = args[0];
HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
conn.setDoInput(true);
conn.connect();
InputStream is = conn.getInputStream();
bmImg = BitmapFactory.decodeStream(is);
}
catch (IOException e)
{
e.printStackTrace();
}
try {
String path = myFileUrl.getPath();
String idStr = path.substring(path.lastIndexOf('/') + 1);
File filepath = Environment.getExternalStorageDirectory();
File dir = new File (filepath.getAbsolutePath() + "/mydownloaddir/");
dir.mkdirs();
String fileName = idStr;
file = new File(dir, fileName);
FileOutputStream fos = new FileOutputStream(file);
bmImg.compress(CompressFormat.JPEG, 75, fos);
fos.flush();
fos.close();
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String args) {
// TODO Auto-generated method stub
Toast.makeText(SlideImageActivity.this, "Image Saved Succesfully to Folder 'mydownloaddir'", Toast.LENGTH_SHORT).show();
pDialog.dismiss();
}
}
C $三我应该用旁边又有什么用$在medisscanner画廊图片showup
What code should I use next to make the Images showup in gallery using medisscanner
我有这样的事情在这里,但无法正确地使用它:
I got something like this on here But unable to use it properly:
MediaScannerConnection.scanFile(ApplicationContext.context, new String[] { imageFile.getPath() }, null,
new MediaScannerConnection.OnScanCompletedListener() {
@Override
public void onScanCompleted(String path, Uri uri) {
Log.i(TAG, "Scanned " + path);
}
});
请帮助
推荐答案
使用
context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"
+ Environment.getExternalStorageDirectory())));
//但它仅适用于API所述19
//but it only works on API <19
第二法
private void scanFile(String path) {
MediaScannerConnection.scanFile(MainActivity.this,
new String[] { path }, null,
new MediaScannerConnection.OnScanCompletedListener() {
public void onScanCompleted(String path, Uri uri) {
Log.i("TAG", "Finished scanning " + path);
}
});
}
这样称呼它
scanFile(yourFile.getAbsolutePath());
这篇关于使用MediaScannerConnection SCANFILE来扫描下载的图像文件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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