如何根據可繪製的天氣顯示圖像

Question

我想顯示基於天氣的圖像。 我得到的圖像是可繪製的。

例如： 如果代碼= 30，這將顯示雨天圖標

我從

<yweather:condition text="Light Rain with Thunder" code="4" temp="25" date="Thu, 18 Jul 2013 7:58 am SGT" /> 

這裏獲取它是我的代碼

MainActivity.java

public class MainActivity extends Activity { 

TextView weather; 
ImageView image; 

class MyWeather{ 


    String conditiontext; 
    String conditiondate; 

    String numberOfForecast; 
    String forecast; 

    public String toString(){ 

    return "\n- " 
      + "Weather:" + image + "\n" 

    + "Condition: " + conditiontext + "\n" 
    + conditiondate +"\n" 

    + "\n" 
    + "number of forecast: " + numberOfForecast + "\n" 
    + forecast; 

    } 
} 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     weather = (TextView)findViewById(R.id.weather); 
     image = (ImageView)findViewById(R.id.image); 

     Thread myThread = new Thread(new Runnable(){ 

    @Override 
    public void run() { 
    String weatherString = QueryYahooWeather(); 
      Document weatherDoc = convertStringToDocument(weatherString); 

      final MyWeather weatherResult = parseWeather(weatherDoc); 
      runOnUiThread(new Runnable(){ 

    @Override 
    public void run() { 
     weather.setText(weatherResult.toString()); 
    }}); 

    }}); 
     myThread.start(); 
    } 

    private MyWeather parseWeather(Document srcDoc){ 

    MyWeather myWeather = new MyWeather(); 

     //<yweather:condition.../> 
    Node conditionNode = srcDoc.getElementsByTagName("yweather:condition").item(0); 
    if(conditionNode.getTextContent().equals("11")){ 
     image.setImageResource(R.drawable.logo); 
    } 
    else { 

    image.setImageResource(R.drawable.old); 
    } 
    myWeather.conditiontext = conditionNode.getAttributes() 
     .getNamedItem("text") 
     .getNodeValue() 
     .toString(); 
    myWeather.conditiondate = conditionNode.getAttributes() 
     .getNamedItem("date") 
     .getNodeValue() 
     .toString(); 

    //Added to get elements of <yweather:forecast.../> 
    NodeList forecastList = srcDoc.getElementsByTagName("yweather:forecast"); 

    myWeather.forecast = ""; 
    if(forecastList.getLength() > 0){ 
     myWeather.numberOfForecast = String.valueOf(forecastList.getLength()); 
     for(int i = 0; i < forecastList.getLength(); i++){ 
     Node forecastNode = forecastList.item(i); 
     myWeather.forecast += 
     forecastNode 
      .getAttributes() 
      .getNamedItem("date") 
      .getNodeValue() 
      .toString() + " " + 
     forecastNode 
      .getAttributes() 
      .getNamedItem("text") 
      .getNodeValue() 
      .toString() + 
     " High: " + forecastNode 
      .getAttributes() 
      .getNamedItem("high") 
      .getNodeValue() 
      .toString() + 
     " Low: " + forecastNode 
      .getAttributes() 
      .getNamedItem("low") 
      .getNodeValue() 
      .toString() + "\n"; 
     } 
    }else{ 
     myWeather.numberOfForecast = "No forecast"; 
    } 

    return myWeather; 
    } 

    private Document convertStringToDocument(String src){ 

    Document dest = null; 
    DocumentBuilderFactory dbFactory = 
     DocumentBuilderFactory.newInstance(); 
    DocumentBuilder parser; 

    try { 
     parser = dbFactory.newDocumentBuilder(); 
     dest = parser.parse(new ByteArrayInputStream(src.getBytes())); 
    } catch (ParserConfigurationException e1) { 
     e1.printStackTrace(); 
     Toast.makeText(MainActivity.this, 
     e1.toString(), Toast.LENGTH_LONG).show(); 
    } catch (SAXException e) { 
     e.printStackTrace(); 
     Toast.makeText(MainActivity.this, 
     e.toString(), Toast.LENGTH_LONG).show(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
     Toast.makeText(MainActivity.this, 
     e.toString(), Toast.LENGTH_LONG).show(); 
    } 

    return dest; 
    } 

    private String QueryYahooWeather(){ 

    String qResult = ""; 
    String queryString = "http://weather.yahooapis.com/forecastrss?w=1062617&u=c"; 

    HttpClient httpClient = new DefaultHttpClient(); 
    HttpGet httpGet = new HttpGet(queryString); 

    try { 
     HttpEntity httpEntity = httpClient.execute(httpGet).getEntity(); 

     if (httpEntity != null){ 
     InputStream inputStream = httpEntity.getContent(); 
     Reader in = new InputStreamReader(inputStream); 
     BufferedReader bufferedreader = new BufferedReader(in); 
     StringBuilder stringBuilder = new StringBuilder(); 

     String stringReadLine = null; 

     while ((stringReadLine = bufferedreader.readLine()) != null) { 
     stringBuilder.append(stringReadLine + "\n"); 
     } 

     qResult = stringBuilder.toString(); 
     } 
    } catch (ClientProtocolException e) { 
     e.printStackTrace(); 
     Toast.makeText(MainActivity.this, 
     e.toString(), Toast.LENGTH_LONG).show(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
     Toast.makeText(MainActivity.this, 
     e.toString(), Toast.LENGTH_LONG).show(); 
    } 

    return qResult; 
    } 

} 

Answer 1

仍然無法正常工作？

我自己做了這個項目，如果你這樣做，它就可以工作。 :)

的R.id和繪圖是不一樣的，你需要改變的，使其工作

TextView weather; 
ImageView forecast; 
private static Handler mHandler = new Handler(); 
class MyWeather{ 


    String conditiontext; 
    String conditiondate; 

    String numberOfForecast; 
    String forecast; 

    public String forecastToString(){ 

    return "\n- " 
      + "Weather: " +"you wanted to have something here, I just dont understand what. " + "\n" 

    + "Condition: " + conditiontext + "\n" 
    + conditiondate +"\n" 

    + "\n" 
    + "number of forecast: " + numberOfForecast + "\n" 
    + forecast; 

    } 
} 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     weather = (TextView)findViewById(R.id.textView1); 
     forecast = (ImageView)findViewById(R.id.imageView1); 

     Thread myThread = new Thread(new Runnable(){ 

    @Override 
    public void run() { 
    String weatherString = QueryYahooWeather(); 
      Document weatherDoc = convertStringToDocument(weatherString); 

      final MyWeather weatherResult = parseWeather(weatherDoc); 
      runOnUiThread(new Runnable(){ 

    @Override 
    public void run() { 
     weather.setText(weatherResult.forecastToString()); 
    }}); 

    }}); 
     myThread.start(); 
    } 

    private MyWeather parseWeather(Document srcDoc){ 

    MyWeather myWeather = new MyWeather(); 

     //<yweather:condition.../> 
    Node conditionNode = srcDoc.getElementsByTagName("yweather:condition").item(0); 


    String weatherCode = conditionNode.getAttributes() 
      .getNamedItem("code") 
      .getNodeValue() 
      .toString(); 

    if(weatherCode.equals("28")){ 

     mHandler.post(new Runnable() { 
      @Override 
      public void run() { 
       // This gets executed on the UI thread so it can safely modify 
       // Views 

       forecast.setImageResource(R.drawable.ic_launcher); 
      } 
     }); 

    } 
    ... 

Answer 2

我在代碼中發現了一些問題，有兩個圖像爭奪w^

Image = (ImageView)findViewById(R.id.image); 

問題 - ：圖像丟失

ImageView foreImage = new ImageView(this); 
foreImage.setImageResource(R.drawable.logo); 

//你爲什麼要使用動態imageview的

您應該使用處理器線程用於顯示圖像的名稱。