#6 #1510 第六次实验及报告

hzuapps · Jun 2, 2018 · 992051b · 992051b
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commit 992051b
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diff --git a/com1614080901245/61.jpg b/com1614080901245/61.jpg
diff --git a/com1614080901245/62.jpg b/com1614080901245/62.jpg
diff --git a/com1614080901245/63.jpg b/com1614080901245/63.jpg
diff --git a/com1614080901245/main/AndroidManifest.xml b/com1614080901245/main/AndroidManifest.xml
@@ -17,9 +17,23 @@
             </intent-filter>
         </activity>
         <activity
-            android:name=".SecondActivity"
-            android:label="@string/title_activity_second"
-            android:theme="@style/AppTheme.NoActionBar"></activity>
+            android:name=".com1614080901245Activity2"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar" />
+        <activity
+            android:name=".change"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar" />
+        <activity
+            android:name=".view"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar" />
     </application>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
 </manifest>
diff --git a/com1614080901245/main/java/edu/hzuapps/androidlabs/com1614080901245/change.java b/com1614080901245/main/java/edu/hzuapps/androidlabs/com1614080901245/change.java
@@ -0,0 +1,137 @@
+package edu.hzuapps.androidlabs.com1614080901245;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.design.widget.FloatingActionButton;
+import android.support.design.widget.Snackbar;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.View;
+import android.widget.Button;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import android.app.Activity;
+import android.app.ListActivity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.SimpleAdapter;
+import android.widget.Toast;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Environment;
+import android.util.Log;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+import java.io.BufferedInputStream;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class change extends AppCompatActivity {
+
+    public static final String DIRECTORY = "demo";
+    public static final String FILENAME = "file_demo.txt";
+    public static final String TAG = change.class.getSimpleName();
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_change);
+        final Activity thisActivity = this;
+        ((Button) findViewById(R.id.btn_2)).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String text = ((EditText) findViewById(R.id.edit_text)).getText().toString();
+                saveTextIntoInternalStorage(text);
+            }
+        });
+
+    }
+    // 将文字保存到内部存储
+    private void saveTextIntoInternalStorage(String text) {
+        // 获取内部存储目录
+        File dir = this.getFilesDir();
+        //File dir = getCacheDir();
+        if (dir.isDirectory()) {
+//            dir.mkdir();
+//            dir.mkdirs();
+        }
+        if (dir.isFile()) {
+            // D:/Abc.txt , -> D:/Abc1.txt ->D:/abc.txt
+        }
+        File file = new File(dir, FILENAME);
+//        try {
+//            File = File.createTempFile(FILENAME, null, dir);
+//        } catch (IOException e) {
+//            e.printStackTrace();
+//        }
+        if (file.exists()) { // 判断文件是否存在
+            Log.i(TAG, file.getAbsolutePath());
+            Log.i(TAG, file.length() + ""); // bytes*1024=kb *1024 MB
+            Log.i(TAG, file.isFile() + "");
+            file.canRead();
+            file.canWrite();
+            file.canExecute();
+            file.getFreeSpace();
+            file.getTotalSpace();
+        }
+        FileOutputStream fos = null;  // 字节流  | char | cn : gbk 2 bytes, utf8 3 bytes
+        try { // 使用API打开输出流
+            fos = openFileOutput(FILENAME, MODE_PRIVATE);
+            //FileOutputStream fos = new FileOutputStream(file);
+            fos.write(text.getBytes()); // 写入内容
+            fos.close(); // 关闭流
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                fos.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        FileReader reader = null; // char
+        try {
+            reader = new FileReader(file.getAbsoluteFile());
+            BufferedReader bReader = new BufferedReader(reader);
+            String line = bReader.readLine();
+            Log.i(TAG, "从文件读取的内容: " + line);
+            bReader.close();
+            reader.close();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        // 显示结果
+        showResult(file.getAbsolutePath());
+        // 删除文件
+        // file.delete();
+        // deleteFile(FILENAME);
+    }
+    private void showResult(String result) {
+        ((TextView) findViewById(R.id.view1))
+                .setText(result.toCharArray(), 0, result.length());
+    }
+
+}
diff --git a/com1614080901245/main/java/edu/hzuapps/androidlabs/com1614080901245/view.java b/com1614080901245/main/java/edu/hzuapps/androidlabs/com1614080901245/view.java
@@ -0,0 +1,81 @@
+package edu.hzuapps.androidlabs.com1614080901245;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import android.app.Activity;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.Handler;
+import android.os.Message;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+
+public class view extends Activity {
+    private EditText editText;
+    private Button button;
+    private ImageView imageView;
+    private Bitmap bitmap;
+    //手柄更新的作用
+    Handler handler=new Handler(){
+        public void handleMessage(Message msg) {
+            if(msg.what==111){
+                imageView.setImageBitmap(bitmap);
+            }
+        };
+    };
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_view);
+        //初始化组件
+        editText=(EditText) findViewById(R.id.view2);
+        button=(Button) findViewById(R.id.btn_3);
+        imageView=(ImageView) findViewById(R.id.imview);
+        //给下载按钮添加一个监听
+        button.setOnClickListener(new OnClickListener() {
+            public void onClick(View arg0) {
+                new Thread(t).start();
+            }
+        });
+    }
+    //为了下载图片资源，开辟一个新的子线程
+    Thread t=new Thread(){
+        public void run() {
+            //下载图片的路径
+            String iPath=editText.getText().toString();
+            try {
+                //对资源链接
+                URL url=new URL(iPath);
+                //打开输入流
+                InputStream inputStream=url.openStream();
+                //对网上资源进行下载转换位图图片
+                bitmap=BitmapFactory.decodeStream(inputStream);
+                handler.sendEmptyMessage(111);
+                inputStream.close();
+                //再一次打开
+                inputStream=url.openStream();
+                File file=new File(Environment.getExternalStorageDirectory()+"/DCIM/");
+                FileOutputStream fileOutputStream=new FileOutputStream(file);
+                int hasRead=0;
+                while((hasRead=inputStream.read())!=-1){
+                    fileOutputStream.write(hasRead);
+                }
+                fileOutputStream.close();
+                inputStream.close();
+            } catch (MalformedURLException e) {
+                e.printStackTrace();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        };
+    };
+}
diff --git a/com1614080901245/main/res/layout/activity_change.xml b/com1614080901245/main/res/layout/activity_change.xml
@@ -0,0 +1,49 @@
+<?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"
+    android:background="@drawable/b"
+    tools:context=".change">
+    <RelativeLayout
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="编辑信息"
+            android:textColor="#000000"
+            android:textSize="25sp"
+            android:layout_marginTop="10dp"
+            android:layout_marginLeft="140dp"/>
+
+        <Button
+            android:id="@+id/btn_2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="保存"
+            android:textColor="#000000"
+            android:layout_marginTop="0dp"
+            android:layout_marginLeft="300dp"/>
+
+        <EditText
+            android:id="@+id/edit_text"
+            android:layout_width="383dp"
+            android:layout_height="480dp"
+            android:layout_marginTop="50dp"
+            android:gravity="top"/>
+        <TextView
+            android:id="@+id/view1"
+            android:layout_width="match_parent"
+            android:layout_height="33dp"
+            android:gravity="center"
+            android:layout_marginTop="530dp"
+            android:textColor="#30F"
+            android:textStyle="bold"/>
+    </RelativeLayout>
+
+
+</android.support.constraint.ConstraintLayout>
diff --git a/com1614080901245/main/res/layout/activity_view.xml b/com1614080901245/main/res/layout/activity_view.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/c"
+    tools:context=".view">
+
+    <RelativeLayout
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent">
+        <TextView
+            android:layout_width="384dp"
+            android:layout_height="60dp"
+            android:gravity="center"
+            android:text="头像查看"
+            android:textColor="#3232CD"
+            android:textSize="40dp"
+            android:textStyle="bold"/>
+        <Button
+            android:id="@+id/btn_3"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="显示"
+            android:textSize="25dp"
+            android:textColor="#000000"
+            android:layout_marginTop="515dp"
+            android:layout_marginLeft="150dp"/>
+        <EditText
+            android:id="@+id/view2"
+            android:layout_width="match_parent"
+            android:layout_height="40dp"
+            android:text="http://image.so.com/v?q=10086&src=tab_www&correct=10086&cmsid=380e24427da160cfe109e84e96741c4f&cmran=0&cmras=0&cn=0&gn=0&kn=6#multiple=0&gsrc=1&dataindex=13&id=9b80529c67408c4e35d7f67d89d8fb89&currsn=0&jdx=13&fsn=66"
+            android:layout_marginTop="60dp"/>
+        <ImageView
+            android:id="@+id/imview"
+            android:layout_width="match_parent"
+            android:layout_height="300dp"
+            android:layout_marginTop="100dp"/>
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="50dp"
+            android:text="查看"
+            android:textColor="#000000"
+            android:textSize="30dp"
+            android:layout_marginTop="400dp"/>
+
+    </RelativeLayout>
+</LinearLayout>
diff --git a/com1614080901245/main/res/layout/com1614080901245activity_main1.xml b/com1614080901245/main/res/layout/com1614080901245activity_main1.xml
@@ -0,0 +1,27 @@
+<?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"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".com1614080901245Activity"
+    >
+
+    <RelativeLayout
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:background="@drawable/app"
+        >
+        <Button
+            android:id="@+id/btn01"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="查看"
+            android:textColor="#3F51B5"
+            android:textSize="25dp"
+            android:layout_marginLeft="150dp"
+            android:layout_marginTop="300dp"/>
+    </RelativeLayout>
+
+</android.support.constraint.ConstraintLayout>