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Merge pull request #2628 from JinmingH/master
#6 #906第六次实验+第4,5次实验报告
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102 changes: 102 additions & 0 deletions
102
...4080902232/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902232/Main2Activity.java
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| package edu.hzuapps.androidlabs.soft1614080902232; | ||
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| 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.util.Log; | ||
| import android.view.View; | ||
| import android.widget.TextView; | ||
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| import org.json.JSONArray; | ||
| import org.json.JSONObject; | ||
| import org.json.JSONStringer; | ||
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| import java.io.BufferedReader; | ||
| import java.io.InputStream; | ||
| import java.io.InputStreamReader; | ||
| import java.net.HttpURLConnection; | ||
| import java.net.URL; | ||
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| public class Main2Activity extends AppCompatActivity { | ||
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| private TextView texts; | ||
| private String text; | ||
| public static final String TAG = Main2Activity.class.getSimpleName(); | ||
| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_main2); | ||
| Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); | ||
| setSupportActionBar(toolbar); | ||
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| FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); | ||
| fab.setOnClickListener(new View.OnClickListener() { | ||
| @Override | ||
| public void onClick(View view) { | ||
| Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) | ||
| .setAction("Action", null).show(); | ||
| } | ||
| }); | ||
| texts = ((TextView) findViewById(R.id.readView2)); | ||
| getJson(); | ||
| } | ||
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| public void getJson() { | ||
| new Thread() { | ||
| @Override | ||
| public void run() { | ||
| try { | ||
| // 你的 URL | ||
| Log.i(TAG, "01"); | ||
| String url_s = "https://raw.githubusercontent.com/JinmingH/android-labs-2018/master/soft1614080902232/information.json"; | ||
| URL url = new URL(url_s); | ||
| HttpURLConnection conn = (HttpURLConnection) url.openConnection(); | ||
| Log.i(TAG, "1"); | ||
| conn.setConnectTimeout(5000); | ||
| conn.setUseCaches(false); | ||
| conn.connect(); | ||
| InputStream inputStream = conn.getInputStream(); | ||
| InputStreamReader input = new InputStreamReader(inputStream); | ||
| BufferedReader buffer = new BufferedReader(input); | ||
| if (conn.getResponseCode() == 200) { | ||
| String inputLine; | ||
| StringBuffer resultData = new StringBuffer(); | ||
| while ((inputLine = buffer.readLine()) != null) { | ||
| resultData.append(inputLine); | ||
| } | ||
| text = resultData.toString(); | ||
| Log.v("out---------------->", text); | ||
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| runOnUiThread(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| try { | ||
| JSONArray js = new JSONArray(text); | ||
| JSONObject ob = js.getJSONObject(0); | ||
| String str = ob.getString("sentence"); | ||
| texts.setText(str); | ||
| ob = js.getJSONObject(1); | ||
| str = ob.getString("data"); | ||
| texts.append(str); | ||
| }catch(Exception e){ | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| }); | ||
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| } | ||
| } catch (Exception e) { | ||
| Log.i(TAG, "5"); | ||
| e.printStackTrace(); | ||
| } | ||
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| } | ||
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| }.start(); | ||
| } | ||
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| } |
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soft1614080902232/app/src/main/res/layout/activity_main2.xml
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| <?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" | ||
| tools:context=".Main2Activity"> | ||
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| <android.support.design.widget.AppBarLayout | ||
| android:layout_width="match_parent" | ||
| android:layout_height="wrap_content" | ||
| android:theme="@style/AppTheme.AppBarOverlay"> | ||
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| <android.support.v7.widget.Toolbar | ||
| android:id="@+id/toolbar" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="?attr/actionBarSize" | ||
| android:background="?attr/colorPrimary" | ||
| app:popupTheme="@style/AppTheme.PopupOverlay" /> | ||
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| </android.support.design.widget.AppBarLayout> | ||
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| <include layout="@layout/content_main2" /> | ||
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| <android.support.design.widget.FloatingActionButton | ||
| android:id="@+id/fab" | ||
| android:layout_width="wrap_content" | ||
| android:layout_height="wrap_content" | ||
| android:layout_gravity="bottom|end" | ||
| android:layout_margin="@dimen/fab_margin" | ||
| app:srcCompat="@android:drawable/ic_dialog_email" /> | ||
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| </android.support.design.widget.CoordinatorLayout> |
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| @@ -0,0 +1,20 @@ | ||
| # 1.实验要求 | ||
| 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。 | ||
| # 2.实验内容 | ||
| 1）使用其中一种布局方式(本界面所选题目的布局为RelativeLayout) ； | ||
| 2）页面有一个按钮，通过控件id获取界面对象，执行相关操作，跳道各自的页面； | ||
| 3）实现界面控件的事件处理，例如点击按钮。 | ||
| # 3.实验步骤 | ||
| （1）在首页添加了添加按钮，点击后跳转到记事本页面。 | ||
| （2）在记事本页面 ConstraintLayout 里分别创建了一个 LinearLayout 和一个 RelativeLayout。 | ||
| （3）在记事本页面增加了保存和取消这 两个按钮，点击后分别执行保存记事本到txt文件和退出操作。 | ||
| （4）在记事本页面增加了一个 EditText，用于储存文本内容。 | ||
| # 4实验结果 | ||
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| # 5.实验体会 | ||
| 这个实验我做了很久，上网查了之后，才知道要一些东西要怎么做。总体来说学到了不少。 |
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| # 第五次实验 | ||
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| ## 1. 实验目标 | ||
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| - 掌握在 Android App 中存储数据。 | ||
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| ## 2. 实验内容 | ||
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| - (1). 将应用产生的数据保存到文件存储中； | ||
| - (2). 说明使用的文件存储方式：内部 or 外部； | ||
| - (3). 将运行结果截图。 | ||
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| ## 3. 实验步骤 | ||
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| - (1). 添加了一个 textview。 | ||
| - (2). 把 textview 的内容赋给 string 对象。 | ||
| - (3). 我用 FileOutputStream 把 String 的内容写到文本中，用的是内部存储。 | ||
| - (4). 再把数据从文本中读出来显示到 textView。 | ||
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| ## 4. 实验结果 | ||
|  | ||
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| ## 5. 实验体会 | ||
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| 通过本次实验掌握在 Android App 中存储数据的一种方法，将应用产生的数据保存到文件存储中。 | ||
| 由于很久没打过 java 了，很多都有点忘记了，这个实验让我把回去把 java.IO 这方面又看了一下。 |
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