Merge pull request #2560 from BoyJDG/master

#891 实验4，5，6

soft1614080902124/report4.md

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+实验四
+
+一.实验目的
+
+1.根据选题要求设计界面布局及控件使用；
+
+2.布局xml及界面控制操作代码提交并截图；
+
+3.将应用运行结果截图。
+
+二.实验要求
+
+1.使用一种布局方式，设计所选题目的界面：
+
+2.通过控件ID获取界面对象，执行相关操作：
+
+3.实现界面控件的事件处理，例如点击按钮：
+
+三.实验步骤
+
+1.布局选用LinearLayout方式；
+
+2.选用ImageView来显示图片
+
+3.选用Button控件，显示确定调节的按钮；
+
+四.实验截图
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/%E5%AE%9E%E9%AA%8C4%20(1).png)
+
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/%E5%AE%9E%E9%AA%8C4(2).png)
+五.实验体会
+
+这次实验使用了LinearLayout布局和ImageView组件以及button控件来完成界面的设计

soft1614080902124/report5.md

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+第五次实验 
+1.实验目标 
+	1.掌握在Android App中存储数据。
+
+2.实验内容 
+	1.将应用产生的数据存储到数据库中； 
+	2.使用UML类图描述表结构； 
+	3.将应用运行结果截图。
+
+3.实验步骤 
+	1.在res文件夹中添加一个raw文件，将data.txt文本数据放入 
+	2.利用android系统的Resources类，通过类的openRawResource方法，利用InputStream读取文本数据 
+	3.再利用Scanner读取文件 
+	4.利用ArrayList存储读取的数据 
+	5.在利用ArrayAdapter将数据传送给listView中展现出来
+
+4.实验结果 
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/shiyan5.jpg)
+
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/shiyan5%20(2).jpg)
+
+5.实验体会 
+本次实验经过百度，查看别人的代码写出来。大部分功能还未实现在努力实现中。

soft1614080902124/report6.md

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+第六次实验 一.实验目的
+
+1.掌握Android网络访问方法； 
+2.理解XML和JSON表示数据的方法。
+
+二.实验内容
+
+1.通过url下载一张照片 
+2.将照片显示到ImagView上 
+3.实验截图
+
+三.实验步骤
+
+1.通过新建一个新线程，加载图片信息 
+2.将加载的图片信息发送到消息队列中 
+3.注意点：网络图片通过转化inputStream流，在转化为bitMap，最后将bitMap传给imageView 
+4.在消息队列中进行UI修改 5.运行代码截图并用git上交相关文件。
+
+四.实验截图
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/shiyan6(1).png)
+
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/shiyan6%20(2).jpg)
+
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/shiyan6%20(3).jpg)
+
+![image](https://github.com/BoyJDG/android-labs-2018/blob/master/soft1614080902124/shiyan6.jpg)
+五.实验体会
+
+通过这次实验了解了Android网络访问方法，获取权限，android的线程与java是一样的。

soft1614080902124/soft1614080902124/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902124/Activity2.java

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+package edu.hzuapps.androidlabs.soft1614080902124;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class Activity2 extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_2);
+    }
+}

soft1614080902124/soft1614080902124/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902124/Main2Activity.java

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+package edu.hzuapps.androidlabs.soft1614080902124;
+
+import android.annotation.SuppressLint;
+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 Main2Activity extends AppCompatActivity {
+    private Handler handler=new Handler();
+    ImageView imageView;
+    private String url = "http://a.hiphotos.baidu.com/image/h%3D300/sign=13dc7fee3512b31bd86ccb29b6193674/730e0cf3d7ca7bcb6a172486b2096b63f624a82f.jpg";
+    private String url2="http://d.hiphotos.baidu.com/image/h%3D300/sign=38d65ae4c680653864eaa213a7dca115/8cb1cb13495409237691bcd49e58d109b2de49a4.jpg";
+    Bitmap bmImg;
+
+    //在消息队列中实现对控件的更改
+    @SuppressLint("HandlerLeak")
+    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_main2);
+        imageView = (ImageView) findViewById(R.id.mypic);
+        Button btn=(Button) findViewById(R.id.pre);
+        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();
+            }
+        });
+
+        Button btn1=(Button) findViewById(R.id.next);
+        btn1.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(url2);
+                        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;
+    }
+}

soft1614080902124/soft1614080902124/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902124/Main3Activity.java

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+package edu.hzuapps.androidlabs.soft1614080902124;
+
+import android.content.res.Resources;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class Main3Activity extends AppCompatActivity {
+    public ArrayList<String> data = new ArrayList<String>();
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main3);
+
+        load();
+        ListView listView=(ListView) findViewById(R.id.listview);
+        ArrayAdapter<String> adapter=new ArrayAdapter<String>(Main3Activity.this,android.R.layout.simple_list_item_1,data);
+        listView.setAdapter(adapter);
+    }
+
+    public void load() {
+        Resources resources = this.getResources();
+        InputStream StdInfo = null;
+        try {
+            // 用InputStream方式读取保存在 /res/raw 下的原始文件
+            StdInfo = resources.openRawResource(R.raw.data);
+            if (StdInfo.available() == 0)
+                return;
+            if (StdInfo != null) {
+                //用utf-8读取文件
+                Scanner input = new Scanner(StdInfo, "GBK");
+                while (input.hasNext()) {
+                    String Name = input.next();
+                    data.add(Name);
+                }
+            }
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}

soft1614080902124/soft1614080902124/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902124/MainActivity.java

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+package edu.hzuapps.androidlabs.soft1614080902124;
+
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Button button = (Button) findViewById(R.id.my_in);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(MainActivity.this, Main2Activity.class);
+                startActivity(intent);
+            }
+        });
+
+        Button button1 = (Button) findViewById(R.id.two);
+        button1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(MainActivity.this, Main3Activity.class);
+                startActivity(intent);
+            }
+        });
+    }
+}

soft1614080902124/soft1614080902124/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902124/Soft1614080902124Activity.java

@@ -6,26 +6,19 @@
 import android.view.View;
 import android.widget.Button;
 
-
 public class Soft1614080902124Activity extends AppCompatActivity {
 
-    Button button = null;
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_soft1614080902124);
-
-        button = (Button)findViewById(R.id.button1);
+        Button button=(Button)findViewById(R.id.my_in);
         button.setOnClickListener(new View.OnClickListener() {
             @Override
-            public void onClick(View v) {
-                Intent intent = new Intent();
-                intent.setClass(Soft1614080902124Activity.this,Soft1614080902124Activity_2.class);
+            public void onClick(View view) {
+                Intent intent = new Intent(Soft1614080902124Activity.this,Activity2.class);
                 startActivity(intent);
             }
         });
-
-
     }
 }

soft1614080902124/soft1614080902124/app/src/main/res/layout/activity_2.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout 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"
+    tools:context="edu.hzuapps.androidlabs.soft1614080902124.Activity2">
+
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/mypic"
+        android:background="@drawable/pic2"/>
+
+    <Button
+        android:id="@+id/pre"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentRight="true"
+        android:text="上一张"
+        tools:layout_editor_absoluteX="41dp"
+        tools:layout_editor_absoluteY="411dp" />
+
+    <Button
+        android:id="@+id/next"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="下一张"
+        tools:layout_editor_absoluteX="245dp"
+        tools:layout_editor_absoluteY="411dp" />
+
+</android.support.constraint.ConstraintLayout>