Android HttpURLConnection Download Network Picture Setting System Wallpaper

Requirements:

Wallpaper is url link, get can be requested, so use get request to the picture, the picture into bitmap, and then set the wallpaper.

Code:

Here I encapsulate the tool class

package xxxxx.utils;
 
import android.app.Activity;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
/**
 *  Set up wallpaper 
 * 1 Download network pictures and use HttpURLConnection
 * 2 Set wallpaper 
 * Created by zst on 2018/10/15.
 */
 
public class HttpURLConnectionUtil {
 
  /**
   *  Set up system wallpaper 
   * 1 Set the network picture to the system wallpaper 
   * 2 Because Google does not maintain other frameworks, it uses HttpURLConnection To download and configure 
   *
   * @param activity
   * @param imgUrl
   */
  public static void setWallpaper(final Activity activity, final String imgUrl) {
    //Log.e(" Wallpaper ", " Links: " + imgUrl);
 
    new Thread(new Runnable() {
      @Override
      public void run() {
        try {
          URL httpUrl = new URL(imgUrl);// Gets the incoming url Address   And catch exceptions generated by the parsing process 
          // Use is Http Visit   So use HttpURLConnection  Similarly, if you use https  Then use HttpsURLConnection
          try {
            HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();// Pass httpUrl Open 1 A HttpURLConnection Object 
            conn.setReadTimeout(5000);// Set the display time of supermarket to 5 Seconds 
            conn.setRequestMethod("GET");// Setting access methods 
            conn.setDoInput(true);// Set to get the input stream 
 
            InputStream in = conn.getInputStream();// Get the input stream 
 
            // Create 1 Write ID File object of card 
            FileOutputStream out = null;
            File download = null;
            String filename = String.valueOf(System.currentTimeMillis());// Get system time 
            // Determine whether the file exists   Environment.MEDIA_MOUNTEDID Is the card mounted   If yes, create a file object 
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
              File parent = Environment.getExternalStorageDirectory();// Get ID Card directory 
              download = new File(parent, filename);// Create in the directory of the parent class 1 Files with the currently downloaded system time as the file name 
 
              out = new FileOutputStream(download);
            }
 
            byte[] b = new byte[2 * 1024];
            int len;
            if (out != null) {//id If the card exists   Write to the 
              while ((len = in.read(b)) != -1) {
                out.write(b, 0, len);
              }
            }
 
            // Read the contents of the file 
            final Bitmap bitmap = BitmapFactory.decodeFile(download.getAbsolutePath());
            activity.runOnUiThread(new Runnable() {
              @Override
              public void run() {
                // Set the picture as wallpaper 
                //Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(),R.drawable.bg_user_top);// Setting items res Pictures in 
                WallpaperManager manager = WallpaperManager.getInstance(activity);
                try {
                  manager.setBitmap(bitmap);
                  UiUtil.showToastLong(activity, " The wallpaper was set successfully, please check it on the desktop ");
                } catch (IOException e) {
                  UiUtil.showToast(activity, " Wallpaper set to failed ");
                  e.printStackTrace();
                }
              }
            });
 
          } catch (IOException e) {
            e.printStackTrace();
          }
 
        } catch (MalformedURLException e) {
          e.printStackTrace();
        }
 
      }
    }).start();
  }
 
}