AndroidManifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
MainActivity.java
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.*;
public class MainActivity extends Activity {
Button button;
ProgressDialog progressdialog;
public static final int Progress_Dialog_Progress = 0;
String ImageURL = "https://www.android-examples.com/wp-content/uploads/2016/04/demo_download_image.jpg" ;
URL url;
URLConnection urlconnection ;
int FileSize;
InputStream inputstream;
OutputStream outputstream;
byte dataArray[] = new byte[1024];
long totalSize = 0;
ImageView imageview;
String GetPath ;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button = (Button)findViewById(R.id.button);
imageview = (ImageView)findViewById(R.id.image);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new ImageDownloadWithProgressDialog().execute(ImageURL);
}
});
}
public class ImageDownloadWithProgressDialog extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
showDialog(Progress_Dialog_Progress);
}
@Override
protected String doInBackground(String... aurl) {
int count;
try {
url = new URL(aurl[0]);
urlconnection = url.openConnection();
urlconnection.connect();
FileSize = urlconnection.getContentLength();
inputstream = new BufferedInputStream(url.openStream());
outputstream = new FileOutputStream("/sdcard/demo_photo1.jpg");
while ((count = inputstream.read(dataArray)) != -1) {
totalSize += count;
publishProgress(""+(int)((totalSize*100)/FileSize));
outputstream.write(dataArray, 0, count);
}
outputstream.flush();
outputstream.close();
inputstream.close();
} catch (Exception e) {}
return null;
}
protected void onProgressUpdate(String... progress) {
progressdialog.setProgress(Integer.parseInt(progress[0]));
}
@Override
protected void onPostExecute(String unused) {
dismissDialog(Progress_Dialog_Progress);
GetPath = Environment.getExternalStorageDirectory().toString() + "/demo_photo1.jpg";
imageview.setImageDrawable(Drawable.createFromPath(GetPath));
Toast.makeText(MainActivity.this, "Image Downloaded Successfully", Toast.LENGTH_LONG).show();
}
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case Progress_Dialog_Progress:
progressdialog = new ProgressDialog(MainActivity.this);
progressdialog.setMessage("Downloading Image From Server...");
progressdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressdialog.setCancelable(false);
progressdialog.show();
return progressdialog;
default:
return null;
}
}
}
