Android Application Development Cookbook: 93 Recipes for Building Winning Apps

Uri url = Uri.parse(getIntent().getStringExtra("URL"));
WebView webView = (WebView) findViewById(R.id.webView); 
webView.setWebViewClient(new Callback()); 
www.it-ebooks.info

---

 
Recipe 1.8 Making Your Application callable By others
❘
37
if (url!=null) {
webView.loadUrl(url.toString());
} else {
webView.loadUrl("http://www.google.com");
}
}
Figure 1-22 
www.it-ebooks.info

---

www.it-ebooks.info

---

Using Views to Design the 
U
Interface
In the previous chapter, you learned about some of the fundamental concepts in Android pro-
gramming. This chapter takes a look at the various views that you can use to design the user 
interface for your applications. In particular, you will learn about the following views:
➤
Button
, 
ToggleButton
, 
ImageButton
, and 
RadioButton
➤
CheckBox
➤
WebView
➤
DatePicker
and 
TimePicker
You will also learn about the various ways to lay out your views using ViewGroups. In par-
ticular, you will learn about the following ViewGroups: 
➤
LinearLayout
➤
RelativeLayout
➤
FrameLayout
➤
TableLayout
➤
ScrollView
Finally, this chapter demonstrates how to display context and options menus, as well as how 
to display dialogs and implement page swiping. 
2
www.it-ebooks.info

---

40
❘
ChAPter 2
using Views to design the user interFAce