intent.setType(“message/rfc882″);

　　Intent.createChooser(intent, “Choose Email Client”);

　　//发送带附件的邮件

　　Intent intent = new Intent(Intent.ACTION_SEND);

　　intent.putExtra(Intent.EXTRA_SUBJECT, “The email subject text”);

　　intent.putExtra(Intent.EXTRA_STREAM, “file:///sdcard/mysong.mp3″);

　　intent.setType(“audio/mp3″);

　　startActivity(Intent.createChooser(intent, “Choose Email Client”));

　　十、发短信

　　Uri uri= Uri.parse(“tel:10086″);

　　Intent intent = new Intent(Intent.ACTION_VIEW, uri);

　　intent.putExtra(“sms_body”, “I come from http://blog.3gstdy.com”);

　　intent.setType(“vnd.android-dir/mms-sms”);

　　十一、直接发邮件

　　Uri uri= Uri.parse(“smsto://100861″);

　　Intent intent = new Intent(Intent.ACTION_SENDTO, uri);

　　intent.putExtra(“sms_body”, “3g android http://blog.3gstdy.com”);

　　十二、发彩信

　　Uri uri= Uri.parse(“content://media/external/images/media/23″);

　　Intent intent = new Intent(Intent.ACTION_SEND);

　　intent.putExtra(“sms_body”, “3g android http://blog.3gstdy.com”);

　　intent.putExtra(Intent.EXTRA_STREAM, uri);

　　intent.setType(“image/png”);

　　十三、# Market 相关

　　1 //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

　　2 //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

　　十四、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