Android开发之调用自带的功能

显示网页: Uri uri = Uri.parse("http://www.google.com");

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

startActivity(it);
复制代码显示地图: Uri uri = Uri.parse("geo:38.899533,-77.036476");

Intent it = new Intent(Intent.Action_VIEW,uri);

startActivity(it); 
复制代码路径规划: 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);
复制代码拨打电话:
调用拨号程序 Uri uri = Uri.parse("tel:xxxxxx");

Intent it = new Intent(Intent.ACTION_DIAL, uri);  

startActivity(it);  
复制代码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" />
复制代码发送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);  
复制代码发送短信 Uri uri = Uri.parse("smsto:0800000123");  

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

it.putExtra("sms_body", "The SMS text");  

startActivity(it);  
复制代码发送彩信 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); 
复制代码发送Email 

Uri uri = Uri.parse("mailto:[e-mail]");

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

startActivity(it);
复制代码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"));  
复制代码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"));  
复制代码添加附件 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"));
复制代码播放多媒体  

Intent it = new Intent(Intent.ACTION_VIEW);

Uri uri = Uri.parse("file:///sdcard/song.mp3");

it.setDataAndType(uri, "audio/mp3");

startActivity(it);
复制代码Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");  

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

startActivity(it);  
复制代码Uninstall 程序 Uri uri = Uri.fromParts("package", strPackageName, null);  

Intent it = new Intent(Intent.ACTION_DELETE, uri);  

startActivity(it);

关于楼主的问题,只要指定email地址,然后发个intent就可以把Email启动起来了:

Uri uri = Uri.parse("mailto:[e-mail]"); 

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

startActivity(it);