intent = new Intent(this,Install.class);
startActivity(intent);

 String actionName= "com.androidbook.intent.action.ShowBasicView";Intent intent = new Intent(actionName);activity.startActivity(intent);

 1 //打开一个浏览器，手机有多的浏览器的话，弹出选择框
 2     public static void invokeWebBrowser(Activity activity)
 3     {
 4         Intent intent = new Intent(Intent.ACTION_VIEW);
 5         intent.setData(Uri.parse("http://www.google.com"));
 6         activity.startActivity(intent);
 7     }
 8
 9     public static void invokeWebSearch(Activity activity)
10     {
11         Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
12         intent.setData(Uri.parse("http://www.google.com"));
13         activity.startActivity(intent);
14     }
15     public static void dial(Activity activity)
16     {
17         Intent intent = new Intent(Intent.ACTION_DIAL);
18         activity.startActivity(intent);
19     }
20
21     public static void call(Activity activity)
22     {
23         Intent intent = new Intent(Intent.ACTION_CALL);
24         intent.setData(Uri.parse("tel:904-905-5646"));
25         activity.startActivity(intent);
26     }
27     public static void showMapAtLatLong(Activity activity)
28     {
29         Intent intent = new Intent(Intent.ACTION_VIEW);
30         //geo:lat,long?z=zoomlevel&q=question-string
31         intent.setData(Uri.parse("geo:0,0?z=4&q=business+near+city"));
32         activity.startActivity(intent);
33     }