activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.arham.csdevbin.downloadimagefrominternet.MainActivity"> <ImageView android:id="@+id/imageView" android:layout_width="300dp" android:layout_height="400dp" android:layout_gravity="center_horizontal" android:layout_marginTop="30dp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:srcCompat="@mipmap/ic_launcher" tools:layout_editor_absoluteY="45dp" /> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginTop="20dp" android:text="Download Image" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" tools:layout_editor_absoluteY="152dp" /> </LinearLayout> |
MainActivity.java
package com.arham.csdevbin.downloadimagefrominternet; import android.app.ProgressDialog; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.AsyncTask; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import java.io.InputStream; import java.net.URL; public class MainActivity extends AppCompatActivity implements View.OnClickListener { ImageView imageView; Button btnD; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); imageView = findViewById(R.id.imageView); btnD = findViewById(R.id.button); btnD.setOnClickListener(MainActivity.this); } @Override public void onClick(View v) { DownloadImageTask downloadImageTask = new DownloadImageTask(MainActivity.this); downloadImageTask.execute("http://www.gettyimages.ca/gi-resources" + "/images/Homepage/Hero/UK/CMS_Creative_164657191_Kingfisher.jpg"); } private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> { ProgressDialog progressDialog; Context context; public DownloadImageTask(Context context) { this.context = context; progressDialog = new ProgressDialog(context); } @Override protected void onPreExecute() { super.onPreExecute(); progressDialog.setMessage("Downloading Image... Please Wait"); progressDialog.show(); } @Override protected Bitmap doInBackground(String... params) { String stringUrl = params[0]; Bitmap bitmap = null; try { URL url = new URL(stringUrl); InputStream inputStream = url.openStream(); bitmap = BitmapFactory.decodeStream(inputStream); } catch (Exception e) { e.printStackTrace(); } return bitmap; } @Override protected void onPostExecute(Bitmap bitmap) { super.onPostExecute(bitmap); imageView.setImageBitmap(bitmap); if (progressDialog.isShowing()) { progressDialog.dismiss(); } } } } |
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