How to download file one by one in a ListView?

Question

I have source code from https://awsrh.blogspot.com/2018/05/volley-glide-tutorial-send-data-and.html

I want to download pdf files, one by one from a server on a button click

Example

Answer 1

So first you need a normal Button[do this in yourlayoutfile.yml]

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_test"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="198dp"
        android:text="Download" />
</RelativeLayout>

Now set a OnClickListener at your Button in youre Activity:

public class MainActivity extends AppCompatActivity {

    private Button downloadButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);

        downloadButton= (Button) findViewById(R.id.button);
        downloadButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               downloadFile();
            }
        });
    }

    public void downloadFile() {
        //Here put-in youre download stuff
        //so download the file from your server
    }
}

Answer 2

here is the SO Thread for downloading with progress : Download a file with Android, and showing the progress in a ProgressDialog
and here is another SO Thread for download via android's download manager : Download Files Using download manager

all you need is for loop now :)