如何在黑莓程序中创建一个URL

Question

谁能告诉我如何在Blackberry中创建一个URL链接，它在被点击后打开一个网页？

Answer 1

// This can eb a nested class in your screen class. 
class URLButtonField extends ButtonField { 
    String url; 
    public URLButtonField(String label, String url) { 
     super(label); 
     this.url = url; 
    } 
    public String getURL() { 
     return url; 
    } 
    public void setURL(String url) { 
     this.url = url; 
    } 
}  



// member variable of your screen class- this will let you access it later 
// to change the URL 
URLButtonField bf; 

// In your screen's constructor: 

bf = new ButtonField("Example", "http://www.example.com"); 
bf.setFieldChangeListener(new FieldChangeListener() { 
    void fieldChanged(Field field, int context) { 
     if (field == this) { 
      BrowserSession session =- Browser.getDefaultSession(); 
      session.displayPage(getURL()); 
     } 
    } 
});   
add(bf); 

然后，您可以更改“BF”的文字或目的地网址在任何时候，不管你把它改为将是启动被点击时，它的网址：

// In response to some activity: 
bf.setText("Example Two"); 
bf.setURL("http://www.example.com/two");