用Handler进行网络取图片

来源：互联网发布：淘宝网卖什么赚钱编辑：程序博客网时间：2024/06/07 23:54

1、新建一个XML和一个Imgview，用来点击获取和显示图片

<span style="font-size:18px;"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <ImageView        android:id="@+id/imgview"        android:layout_width="wrap_content"        android:layout_height="wrap_content"</span>

2,、新建一个Activty继承Activty

<span style="font-size:18px;">package com.example.com.scxh.netimgw.wangqu;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.sql.Connection;import android.app.Activity;import android.database.CursorJoiner.Result;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.AsyncTask;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;public class MainActivity extends Activity {private static final String httpUrls = "http://www.jimeise.net/wp-content/uploads/2014/05/IMGP6150.jpg";private ImageView mImageView, ImageView2;private Button mButton, mButton2;Bitmap bitmap = null;HttpURLConnection connect = null;InputStream is = null;private Handler mHandler = new Handler() {public void handleMessage(android.os.Message msg) {Bitmap bitmap = (Bitmap) msg.obj;mImageView.setImageBitmap(bitmap);};};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mImageView = (ImageView) findViewById(R.id.imgview);mButton = (Button) findViewById(R.id.butn);mButton2 = (Button) findViewById(R.id.butns);ImageView2 = (ImageView) findViewById(R.id.imgviews);//用Handler进行网络取图片//mButton.setOnClickListener(new OnClickListener() {//public void onClick(View v) {//new Thread() {//public void run() {//URL url;//try {//url = new URL(httpUrls);//HttpURLConnection connect = (HttpURLConnection) url//.openConnection();//InputStream is = connect.getInputStream();//Bitmap bitmap = BitmapFactory.decodeStream(is);////Message msg = Message.obtain();//msg.obj = bitmap;//mHandler.sendMessage(msg);//} catch (MalformedURLException e) {//e.printStackTrace();//} catch (IOException e) {//e.printStackTrace();//} finally {//if (is != null) {//try {//is.close();//if (connect != null) {//connect.disconnect();//}//} catch (IOException e) {////e.printStackTrace();//}//}//}//}////}.start();////}//});</span>

这样就实现了网络取图片

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