Uri的使用場景：

1，調web瀏覽器

Uri myBlogUri = Uri.parse(" http://xxxxx.com ");

returnIt = new Intent(Intent.ACTION_VIEW, myBlogUri);

2，地圖

Uri mapUri = Uri.parse("geo:38.899533,-77.036476");

returnIt = new Intent(Intent.ACTION_VIEW, mapUri);

3，調撥打電話界面

Uri telUri = Uri.parse("tel:100861");

returnIt = new Intent(Intent.ACTION_DIAL, telUri);

4，直接撥打電話

Uri callUri = Uri.parse("tel:100861");

returnIt = new Intent(Intent.ACTION_CALL, callUri);

5，卸載

Uri uninstallUri = Uri.fromParts("package", "xxx", null);

returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);

6，安裝

Uri installUri = Uri.fromParts("package", "xxx", null);

returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);

7，播放

Uri playUri = Uri.parse("file:///sdcard/download/everything.mp3");

returnIt = new Intent(Intent.ACTION_VIEW, playUri);

8，調用發郵件

Uri emailUri = Uri.parse("mailto:xxxx@gmail.com");

returnIt = new Intent(Intent.ACTION_SENDTO, emailUri);

9，發郵件

returnIt = new Intent(Intent.ACTION_SEND);

String[] tos = { "xxxx@gmail.com" };

String[] ccs = { "xxxx@gmail.com" };

returnIt.putExtra(Intent.EXTRA_EMAIL, tos);

returnIt.putExtra(Intent.EXTRA_CC, ccs);

returnIt.putExtra(Intent.EXTRA_TEXT, "body");

returnIt.putExtra(Intent.EXTRA_SUBJECT, "subject");

returnIt.setType("message/rfc882");

Intent.createChooser(returnIt, "Choose Email Client");

10，發短信

Uri smsUri = Uri.parse("tel:100861");

returnIt = new Intent(Intent.ACTION_VIEW, smsUri);

returnIt.putExtra("sms_body", "yyyy");

returnIt.setType("vnd.android-dir/mms-sms");

11，直接發郵件

Uri smsToUri = Uri.parse("smsto://100861");

returnIt = new Intent(Intent.ACTION_SENDTO, smsToUri);

returnIt.putExtra("sms_body", "yyyy");

12，發彩信

Uri mmsUri = Uri.parse("content://media/external/images/media/23");

returnIt = new Intent(Intent.ACTION_SEND);

returnIt.putExtra("sms_body", "yyyy");

returnIt.putExtra(Intent.EXTRA_STREAM, mmsUri);

returnIt.setType("image/png");