一些Intent的常用发：

 //显示网页  
   
 Uri uri = Uri.parse("http://google.com");     
 Intent it = new Intent(Intent.ACTION_VIEW, uri);     
 startActivity(it);     
 
//显示地图  
   
 Uri uri = Uri.parse("geo:38.899533,-77.036476");     
 Intent it = new Intent(Intent.ACTION_VIEW, uri);      
 startActivity(it);      
 //其他 geo URI 範例     
 //geo:latitude,longitude     
 //geo:latitude,longitude?z=zoom     
 //geo:0,0?q=my+street+address     
 //geo:0,0?q=business+near+city     
//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom    
    
   
// 路径规划  
 Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");     
 Intent it = new Intent(Intent.ACTION_VIEW, uri);     
    startActivity(it);     
     //where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456     
   
 //打电话  
 //叫出拨号程序    
 Uri uri = Uri.parse("tel:[phone]");     
 Intent it = new Intent(Intent.ACTION_DIAL, uri);     
 startActivity(it);     
 
 //直接打电话出去     
 Uri uri = Uri.parse("tel:[phone]");     
 Intent it = new Intent(Intent.ACTION_CALL, uri);     
 startActivity(it);     
 //用這个，要在 AndroidManifest.xml 中，加上     
 //<uses-permission id="android.permission.CALL_PHONE" />     
 
//传送SMS/MMS  
 //调用短信程序    
 Intent it = new Intent(Intent.ACTION_VIEW, uri);     
 it.putExtra("sms_body", "The SMS text");      
 it.setType("vnd.android-dir/mms-sms");     
 startActivity(it);    
 
 //传送消息    
 Uri uri = Uri.parse("smsto://0800000123");     
 Intent it = new Intent(Intent.ACTION_SENDTO, uri);     
 it.putExtra("sms_body", "The SMS text");     
startActivity(it);    
//传送 MMS     
 Uri uri = Uri.parse("content://media/external/images/media/23");     
 Intent it = new Intent(Intent.ACTION_SEND);      
 it.putExtra("sms_body", "some text");      
 it.putExtra(Intent.EXTRA_STREAM, uri);     
 it.setType("image/png");      
 startActivity(it);     
/// 传送 Email  
 Uri uri = Uri.parse("mailto:[e-mail]");     
 Intent it = new Intent(Intent.ACTION_SENDTO, uri);     
 startActivity(it);     
 
 Intent it = new Intent(Intent.ACTION_SEND);     
it.putExtra(Intent.EXTRA_EMAIL, "[e-mail]");     
 it.putExtra(Intent.EXTRA_TEXT, "The email body text");     
 it.setType("text/plain");     
 startActivity(Intent.createChooser(it, "Choose Email Client"));     
 
 Intent it=new Intent(Intent.ACTION_SEND);       
 String[] tos={"[e-mail]"};       
 String[] ccs={"[e-mail]"};       
 it.putExtra(Intent.EXTRA_EMAIL, tos);       
 it.putExtra(Intent.EXTRA_CC, ccs);       
 it.putExtra(Intent.EXTRA_TEXT, "The email body text");       
 it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");       
 it.setType("message/rfc822");       
 startActivity(Intent.createChooser(it, "Choose Email Client"));    
 //传送附件  
 Intent it = new Intent(Intent.ACTION_SEND);     
 it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");     
 it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");     
 sendIntent.setType("audio/mp3");     
 startActivity(Intent.createChooser(it, "Choose Email Client"));    
   
// 播放多媒体  
      Uri uri = Uri.parse("file:///sdcard/song.mp3");     
        Intent it = new Intent(Intent.ACTION_VIEW, uri);     
        it.setType("audio/mp3");     
        startActivity(it);    
   
    
 
       Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");     
        Intent it = new Intent(Intent.ACTION_VIEW, uri);     
   
        startActivity(it);    
   
    
//Market 相关  
        //寻找某个应用    
        Uri uri = Uri.parse("market://search?q=pname:pkg_name");    
        Intent it = new Intent(Intent.ACTION_VIEW, uri);     
        startActivity(it);     
        //where pkg_name is the full package path for an application    
 
       //显示某个应用的相关信息    
        Uri uri = Uri.parse("market://details?id=app_id");     
        Intent it = new Intent(Intent.ACTION_VIEW, uri);    
        startActivity(it);     
        //where app_id is the application ID, find the ID      
       //by clicking on your application on Market home      
        //page, and notice the ID from the address bar    
 
 
// Uninstall 应用程序  
       Intent it = new Intent(Intent.ACTION_DELETE, uri);      
      startActivity(it);