How Android uses threads to get online images _android

This article for everyone to share the Android thread to get the network pictures of the specific code for your reference, the specific content as follows

Androidmanifest.xml

<?xml version= "1.0" encoding= "Utf-8"?> <manifest xmlns:android=
"http://schemas.android.com/apk/res/" Android "
  package=" Com.zdcrobot.handlermessage ">
  <uses-permission android:name=" Android.permission.INTERNET "></uses-permission>
  <application
    android:allowbackup=" true "
    android:icon= "@mipmap/ic_launcher"
    android:label= "@string/app_name"
    android:supportsrtl= "true"
    android:theme= "@style/apptheme" >
    <activity
      android:name= ". Mainactivity "
      android:label=" @string/app_name "
      android:theme=" @style/apptheme.noactionbar ">
      <intent-filter>
        <action android:name= "Android.intent.action.MAIN"/>
 
        <category android: Name= "Android.intent.category.LAUNCHER"/>
      </intent-filter>
    </activity>
  </ Application>
 
</manifest>

Activity_main.xml

 <?xml version= "1.0" encoding= "Utf-8"?> < Android.support.design.widget.CoordinatorLayout 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:fitssystemwindows= "true" tools:context= " Com.zdcrobot.handlermessage.MainActivity "> <linearlayout android:orientation=" vertical "android:layout_w Idth= "Match_parent" android:layout_height= "match_parent" > <button android:id= "@+id/button1" Andr Oid:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:text= "Load Picture"/> <ImageVie W android:id= "@+id/image1" android:layout_width= "match_parent" android:layout_height= "500DP"/> ;/linearlayout> </android.support.design.widget.coordinatorlayout> 

mainactivity.class   

Package com.zdcrobot.handlermessage;
Import Android.graphics.Bitmap;
Import Android.graphics.BitmapFactory;
Import Android.os.Bundle;
Import Android.os.Handler;
Import Android.os.Message;
Import android.support.v7.app.AppCompatActivity;
Import Android.view.View;
Import Android.widget.Button;
 
Import Android.widget.ImageView;
Import java.io.IOException;
Import Java.io.InputStream;
Import java.net.HttpURLConnection;
Import java.net.MalformedURLException;
 
Import Java.net.URL;
  public class Mainactivity extends appcompatactivity {private button button;
  Private ImageView ImageView;
  Private String Imagpath = "Yun_qi_img/block.gif";
  Private final int is_finish = 1; Private Handler Handler = new Handler () {@Override public void Handlemessage (msg) {Bitmap Bitmap =
      (Bitmap) Msg.obj;
    Imageview.setimagebitmap (bitmap);
  }
  };
    @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R. Layout.activity_main);
    Button = (button) Findviewbyid (R.id.button1);
    ImageView = (ImageView) Findviewbyid (r.id.image1); Button.setonclicklistener (New View.onclicklistener () {@Override public void OnClick (View v) {new Thr
      EAD (New MyClass ()). Start ();
  }
    });
      The public class MyClass implements runnable{@Override the public void Run () {Bitmap Bitmap = null;
        try {URL url = new URL (imagpath);
        HttpURLConnection httpurlconnection = (httpurlconnection) url.openconnection ();
        Httpurlconnection.setdoinput (TRUE);
        Httpurlconnection.connect ();
        InputStream InputStream = Httpurlconnection.getinputstream ();
      Bitmap = Bitmapfactory.decodestream (InputStream);
      catch (Malformedurlexception e) {e.printstacktrace ();
      catch (IOException e) {e.printstacktrace ();
      } message = Message.obtain ();
      Message.obj = bitmap; Message.what = Is_finish;
    Handler.sendmessage (message); }
  }
}

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