实时获取股票数据的android app应用程序源码分享

前端技术 2023/09/06 Android

最近学习Android应用开发,不知道写一个什么样的程序来练练手,正好最近股票很火,就一个App来实时获取股票数据,取名为Mystock。使用开发工具Android Studio,需要从Android官网下载,下载地址:http://developer.android.com/sdk/index.html。不幸的是Android是Google公司的,任何和Google公司相关的在国内都无法直接访问,只能通过VPN访问。

下图为Android Studio打开一个工程的截图:

 

下面按步介绍Mystock的实现步骤。

1.以下是activa_main.xml的内容。上面一排是三个TextView,分别用来显示上证指数,深圳成指,创业板指。中间一排是一个EditText和一个Button,用来添加股票。下面是一个Table,用来显示添加的股票列表。

<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\" tools:context=\".MainActivity\">
  <LinearLayout
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\"
    android:orientation=\"horizontal\">
    <LinearLayout
      android:layout_width=\"0dp\"
      android:layout_weight=\"0.33\"
      android:layout_height=\"wrap_content\"
      android:orientation=\"vertical\"
      android:gravity=\"center\" >
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:text=\"@string/stock_sh_name\"/>
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:id=\"@+id/stock_sh_index\"/>
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:textSize=\"12sp\"
        android:id=\"@+id/stock_sh_change\"/>
    </LinearLayout>
    <LinearLayout
      android:layout_width=\"0dp\"
      android:layout_weight=\"0.33\"
      android:layout_height=\"wrap_content\"
      android:orientation=\"vertical\"
      android:gravity=\"center\" >
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:text=\"@string/stock_sz_name\"/>
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:id=\"@+id/stock_sz_index\"/>
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:textSize=\"12sp\"
        android:id=\"@+id/stock_sz_change\"/>
    </LinearLayout>
    <LinearLayout
      android:layout_width=\"0dp\"
      android:layout_weight=\"0.33\"
      android:layout_height=\"wrap_content\"
      android:orientation=\"vertical\"
      android:gravity=\"center\" >
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:text=\"@string/stock_chuang_name\"/>
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:id=\"@+id/stock_chuang_index\"/>
      <TextView
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:textSize=\"12sp\"
        android:id=\"@+id/stock_chuang_change\"/>
    </LinearLayout>
  </LinearLayout>
  <LinearLayout
    android:orientation=\"horizontal\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\">
    <EditText
      android:layout_width=\"wrap_content\"
      android:layout_height=\"wrap_content\"
      android:inputType=\"number\"
      android:maxLength=\"6\"
      android:id=\"@+id/editText_stockId\"
      android:layout_weight=\"1\" />
    <Button
      android:layout_width=\"wrap_content\"
      android:layout_height=\"wrap_content\"
      android:text=\"@string/button_add_label\"
      android:onClick=\"addStock\" />
  </LinearLayout>
  <!--ListView
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:id=\"@+id/listView\" /-->
  <ScrollView
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\">
    <TableLayout
      android:layout_width=\"match_parent\"
      android:layout_height=\"wrap_content\"
      android:id=\"@+id/stock_table\"></TableLayout>
  </ScrollView>
</LinearLayout>

应用截图如下:

 

 2.数据获取,这里使用sina提供的接口来实时获取股票数据,代码如下:

public void querySinaStocks(String list){
    // Instantiate the RequestQueue.
    RequestQueue queue = Volley.newRequestQueue(this);
    String url =\"http://hq.sinajs.cn/list=\" + list;
    //http://hq.sinajs.cn/list=sh600000,sh600536
    // Request a string response from the provided URL.
    StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
        new Response.Listener<String>() {
          @Override
          public void onResponse(String response) {
            updateStockListView(sinaResponseToStocks(response));
          }
        },
        new Response.ErrorListener() {
          @Override
          public void onErrorResponse(VolleyError error) {
          }
        });
    queue.add(stringRequest);
  }

这里发送Http请求用到了Volley,需要在build.gradle里面添加dependencies:compile \'com.mcxiaoke.volley:library:1.0.19\'。

3.定时刷新股票数据,使用了Timer,每隔两秒发送请求获取数据,代码如下:

  Timer timer = new Timer(\"RefreshStocks\");
    timer.schedule(new TimerTask() {
      @Override
      public void run() {
        refreshStocks();
      }
    }, 0, 2000);

  private void refreshStocks(){
    String ids = \"\";
    for (String id : StockIds_){
      ids += id;
      ids += \",\";
    }
    querySinaStocks(ids);
  }

 4.在程序退出时存储股票代码,下次打开App时,可以显示上次的股票列表。代码如下。

 private void saveStocksToPreferences(){
    String ids = \"\";
    for (String id : StockIds_){
      ids += id;
      ids += \",\";
    }
    SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPref.edit();
    editor.putString(StockIdsKey_, ids);
    editor.commit();
  }
  @Override
  public void onDestroy() {
    super.onDestroy(); // Always call the superclass
    saveStocksToPreferences();
  }

5.删除选中的股票,在menu_main.xml里面添加一个action。

<menu 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\" tools:context=\".MainActivity\">
  <item android:id=\"@+id/action_settings\" android:title=\"@string/action_settings\"
    android:orderInCategory=\"100\" app:showAsAction=\"never\" />
  <item android:id=\"@+id/action_delete\" android:title=\"@string/action_delete\"
    android:orderInCategory=\"100\" app:showAsAction=\"never\" />
</menu>

代码响应事件并删除:

 @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
      return true;
    }
    else if(id == R.id.action_delete){
      if(SelectedStockItems_.isEmpty())
        return true;
      for (String selectedId : SelectedStockItems_){
        StockIds_.remove(selectedId);
        TableLayout table = (TableLayout)findViewById(R.id.stock_table);
        int count = table.getChildCount();
        for (int i = 1; i < count; i++){
          TableRow row = (TableRow)table.getChildAt(i);
          LinearLayout nameId = (LinearLayout)row.getChildAt(0);
          TextView idText = (TextView)nameId.getChildAt(1);
          if(idText != null && idText.getText().toString() == selectedId){
            table.removeView(row);
            break;
          }
        }
      }
      SelectedStockItems_.clear();
    }
    return super.onOptionsItemSelected(item);
  }

屏幕截图:

 

6.当有大额委托挂单时,发送消息提醒,代码如下:

{
...
      String text = \"\";
      String sBuy = getResources().getString(R.string.stock_buy);
      String sSell = getResources().getString(R.string.stock_sell);
      if(Double.parseDouble(stock.b1_ )>= StockLargeTrade_) {
        text += sBuy + \"1:\" + stock.b1_ + \",\";
      }
      if(Double.parseDouble(stock.b2_ )>= StockLargeTrade_) {
        text += sBuy + \"2:\" + stock.b2_ + \",\";
      }
      if(Double.parseDouble(stock.b3_ )>= StockLargeTrade_) {
        text += sBuy + \"3:\" + stock.b3_ + \",\";
      }
      if(Double.parseDouble(stock.b4_ )>= StockLargeTrade_) {
        text += sBuy + \"4:\" + stock.b4_ + \",\";
      }
      if(Double.parseDouble(stock.b5_ )>= StockLargeTrade_) {
        text += sBuy + \"5:\" + stock.b5_ + \",\";
      }
      if(Double.parseDouble(stock.s1_ )>= StockLargeTrade_) {
        text += sSell + \"1:\" + stock.s1_ + \",\";
      }
      if(Double.parseDouble(stock.s2_ )>= StockLargeTrade_) {
        text += sSell + \"2:\" + stock.s2_ + \",\";
      }
      if(Double.parseDouble(stock.s3_ )>= StockLargeTrade_) {
        text += sSell + \"3:\" + stock.s3_ + \",\";
      }
      if(Double.parseDouble(stock.s4_ )>= StockLargeTrade_) {
        text += sSell + \"4:\" + stock.s4_ + \",\";
      }
      if(Double.parseDouble(stock.s5_ )>= StockLargeTrade_) {
        text += sSell + \"5:\" + stock.s5_ + \",\";
      }
      if(text.length() > 0)
        sendNotifation(Integer.parseInt(sid), stock.name_, text);
...
}

  public void sendNotifation(int id, String title, String text){
    NotificationCompat.Builder nBuilder =
        new NotificationCompat.Builder(this);
    nBuilder.setSmallIcon(R.drawable.ic_launcher);
    nBuilder.setContentTitle(title);
    nBuilder.setContentText(text);
    nBuilder.setVibrate(new long[]{100, 100, 100});
    nBuilder.setLights(Color.RED, 1000, 1000);
    NotificationManager notifyMgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    notifyMgr.notify(id, nBuilder.build());
  }

屏幕截图:


以上通过图文并茂的方式给大家分享了一个实时获取股票数据的android app应用程序源码,希望大家喜欢。

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