Android Intent的几种用法全面总结

Intent应该算是Android中特有的东西。你可以在Intent中指定程序要执行的动作（比如：view,edit,dial），以及程序执行到该动作时所需要的资料。都指定好后，只要调用startActivity()，Android系统会自动寻找最符合你指定要求的应用程序，并执行该程序。

下面列出几种Intent的用法
显示网页:

Uri uri = Uri.parse("http://www.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); 

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); 

拨打电话:
调用拨号程序

Uri uri = Uri.parse("tel:xxxxxx"); 
Intent it = new Intent(Intent.ACTION_DIAL, uri);   
startActivity(it);   
Uri uri = Uri.parse("tel.xxxxxx"); 
Intent it =new Intent(Intent.ACTION_CALL,uri); 

要使用这个必须在配置文件中加入

<uses-permission id="android.permission.CALL_PHONE" />

发送SMS/MMS
调用发送短信的程序

Intent it = new Intent(Intent.ACTION_VIEW); 
it.putExtra("sms_body", "The SMS text"); 
it.setType("vnd.android-dir/mms-sms"); 
startActivity(it);  

发送短信

Uri uri = Uri.parse("smsto:0800000123"); 
Intent it = new Intent(Intent.ACTION_SENDTO, uri); 
it.putExtra("sms_body", "The SMS text"); 
startActivity(it);  

发送彩信

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); 

发送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")); 

添加附件

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   

Intent it = new Intent(Intent.ACTION_VIEW); 
Uri uri = Uri.parse("file:///sdcard/song.mp3"); 
it.setDataAndType(uri, "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); 

Uninstall 程序

Uri uri = Uri.fromParts("package", strPackageName, null); 
Intent it = new Intent(Intent.ACTION_DELETE, uri); 
startActivity(it); 

转自：http://hi.baidu.com/devil%B6%C0%B0%AE/blog/item/5f5caf5e3ce43f48faf2c004.html