實時獲取股票數據的android app應用程序源碼分享

2020-04-11 11:25:49

字體：大中小

來源：轉載

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最近學習Android應用開發，不知道寫一個什么樣的程序來練練手，正好最近股票很火，就一個App來實時獲取股票數據，取名為Mystock。使用開發工具Android Studio，需要從Android官網下載，下載地址：http://developer.android.com/sdk/index.html。不幸的是Android是Google公司的，任何和Google公司相關的在國內都無法直接訪問，只能通過VPN訪問。

下圖為Android Studio打開一個工程的截圖：

下面按步介紹Mystock的實現步驟。

1.以下是activa_main.xml的內容。上面一排是三個TextView，分別用來顯示上證指數，深圳成指，創業板指。中間一排是一個EditText和一個Button，用來添加股票。下面是一個Table，用來顯示添加的股票列表。

<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>

應用截圖如下：

2.數據獲取，這里使用sina提供的接口來實時獲取股票數據，代碼如下：

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);  }

這里發送Http請求用到了Volley，需要在build.gradle里面添加dependencies：compile 'com.mcxiaoke.volley:library:1.0.19'。

3.定時刷新股票數據，使用了Timer，每隔兩秒發送請求獲取數據，代碼如下：

  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.在程序退出時存儲股票代碼，下次打開App時，可以顯示上次的股票列表。代碼如下。

 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.刪除選中的股票,在menu_main.xml里面添加一個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>

代碼響應事件并刪除：

 @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);  }

屏幕截圖：

6.當有大額委托掛單時，發送消息提醒，代碼如下：

{...      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());  }

屏幕截圖：