hzuapps#6#1614080902142第六次实验

soft1614080902142/app/src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.muren.soft1614080902142">
-
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

soft1614080902142/app/src/main/java/com/example/muren/soft1614080902142/MainActivity.java

@@ -1,7 +1,6 @@
 package com.example.muren.soft1614080902142;
 
 
-import android.content.DialogInterface;
 import android.content.SharedPreferences;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;

soft1614080902142/app/src/main/java/com/example/muren/soft1614080902142/Xia.java

@@ -0,0 +1,100 @@
+package com.example.muren.soft1614080902142;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Handler;
+import android.os.Message;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.View;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+public class Xia extends AppCompatActivity {
+    private Handler handler=new Handler();
+    ImageView imageView;
+    private String url = "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1527531897964&di=94ebd784238561ddbcd0647b1cd4e745&imgtype=0&src=http%3A%2F%2Fd.hiphotos.baidu.com%2Fimage%2Fpic%2Fitem%2F94cad1c8a786c9171cc12b9dc53d70cf3ac75757.jpg";
+    Bitmap bmImg;
+
+    //在消息队列中实现对控件的更改
+    private Handler handle = new Handler() {
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case 0:
+                    System.out.println("111");
+                    Bitmap bmp=(Bitmap)msg.obj;
+                    imageView.setImageBitmap(bmp);
+                    break;
+            }
+        };
+    };
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        imageView = (ImageView) findViewById(R.id.my_view);
+        Button btn=(Button) findViewById(R.id.download);
+        btn.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                //新建线程加载图片信息，发送到消息队列中
+                new Thread(new Runnable() {
+
+                    @Override
+                    public void run() {
+                        // TODO Auto-generated method stub
+                        Bitmap bmp = getURLimage(url);
+                        Message msg = new Message();
+                        msg.what = 0;
+                        msg.obj = bmp;
+                        System.out.println("000");
+                        handle.sendMessage(msg);
+                    }
+                }).start();
+            }
+        });
+    }
+
+
+    //加载图片
+    public Bitmap getURLimage(String url) {
+        Bitmap bmp = null;
+        try {
+            URL myurl = new URL(url);
+            // 获得连接
+            HttpURLConnection conn = (HttpURLConnection) myurl.openConnection();
+            conn.setConnectTimeout(6000);//设置超时
+            conn.setDoInput(true);
+            conn.setUseCaches(false);//不缓存
+            conn.connect();
+            InputStream is = conn.getInputStream();//获得图片的数据流
+            bmp = BitmapFactory.decodeStream(is);
+            is.close();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return bmp;
+    }
+}

soft1614080902142/app/src/main/res/layout/activity_main.xml

@@ -57,4 +57,16 @@
         android:id="@+id/savetime"
         android:layout_weight="0.05" />
 
+    <Button
+        android:text="下载图片"
+        android:textSize="@dimen/activity_horizontal_margin"
+        android:background="@color/colorYellow"
+        android:layout_width="103dp"
+        android:layout_height="wrap_content"
+        android:id="@+id/download"
+        android:layout_weight="0.05" />
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/my_view"/>
 </LinearLayout>

soft1614080902142/实验六报告.txt

@@ -0,0 +1,21 @@
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