Android URI以及Intent調用 Uri的過程舉例

安卓app可以使用intent來調用URI數據，從而實現該app不能完成的功能。

就Android平台而言，URI主要分三個部分：scheme, authority and path。其中authority又分為host和port。格式如下：
scheme://host:port/path
舉個實際的例子：
content://com.example.project:200/folder/subfolder/etc
\---------/ \---------------------------/ \---/ \--------------------------/
scheme host port path
\--------------------------------/
authority

現在大家應該知道data flag中那些屬性的含義了吧，看下data flag
android:mimeType="string"
android:path="string"
android:pathPattern="string"
android:pathPrefix="string"
android:port="string"
android:scheme="string" />
但是我們在程序中一般是不直接用URI來標識CP的，是的，正如我們通常見到的用定義的常量來標識。例如standard CP中的Contacts，我們就用Contacts.People.CONTENT_URI來標識Contacts CP中People這個表。那麼要標識某個具體的人怎麼辦呢？ 這就用到了ContentUris.withAppendedId() 和 Uri.withAppendedPath()。例如我們要表示content://contacts/people/20，那麼我們就可以用如下語句：
Uri uri = ContentUris.withAppendedId(People.CONTENT_URI, 20); 或者
Uri uri = Uri.withAppendedPath(People.CONTENT_URI, "20");

舉些例子，如：

所有聯系人的Uri： content://contacts/people

某個聯系人的Uri: content://contacts/people/5

所有圖片Uri: content://media/external

某個圖片的Uri：content://media/external/images/media/4

下面是一些常用的Uri

//調用浏覽器

Uri uri = Uri.parse("");
Intent it = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);


//顯示某個坐標在地圖上


Uri uri = Uri.parse("geo:38.899533,-77.036476");
Intent it = new Intent(Intent.Action_VIEW,uri);
startActivity(it);


//顯示路徑


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);


//撥打電話


Uri uri = Uri.parse("tel:10086");
Intent it = new Intent(Intent.ACTION_DIAL, uri);
startActivity(it);


Uri uri = Uri.parse("tel.10086");
Intent it =new Intent(Intent.ACTION_CALL,uri);
需要添加 這個權限到androidmanifest.xml


//發送短信或彩信


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


//發送短信


Uri uri = Uri.parse("smsto:10086");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
it.putExtra("sms_body", "cwj");
startActivity(it);


//發送彩信


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);


//發送郵件
Uri uri = Uri.parse("mailto:[email protected]");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);


Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_EMAIL, [email protected]);
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={"[email protected]"};
String[] ccs={"[email protected]"};
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"));


//播放媒體文件


Intent it = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:///sdcard/cwj.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);


//卸載APK


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


//卸載apk 2
Uri uninstallUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);


//安裝APK
Uri installUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);


//播放音樂


Uri playUri = Uri.parse("file:///sdcard/download/sth.mp3");
returnIt = new Intent(Intent.ACTION_VIEW, playUri);


//發送附近


Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/cwj.mp3");
sendIntent.setType("audio/mp3");
startActivity(Intent.createChooser(it, "Choose Email Client"));


//market上某個應用信，pkg_name就是應用的packageName


Uri uri = Uri.parse("market://search?q=pname:pkg_name");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);




//market上某個應用信息，app_id可以通過www網站看下


Uri uri = Uri.parse("market://details?id=app_id");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);


//調用搜索


Intent intent = new Intent();
intent.setAction(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY,"android123")
startActivity(intent);