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。
★intent大全：
1.从google搜索内容
Intent intent =newIntent(); intent.setAction(Intent.ACTION_WEB_SEARCH); intent.putExtra(SearchManager.QUERY,"searchString") startActivity(intent);
2.浏览网页
Uri uri =Uri.parse("http://www.google.com");Intent it =newIntent(Intent.ACTION_VIEW,uri);startActivity(it);
3.显示地图
Uri uri = Uri.parse("geo:38.899533,-77.036476");Intent it = newIntent(Intent.Action_VIEW,uri);startActivity(it);
4.路径规划
Uri uri =Uri.parse("http://maps.google.com/maps? f=dsaddr=startLat%20startLng&daddr=endLat%20endLng&hl=en"); Intent it = newIntent(Intent.ACTION_VIEW,URI); startActivity(it);
5.拨打电话
Uri uri =Uri.parse("tel:xxxxxx"); Intent it =newIntent(Intent.ACTION_DIAL,uri); startActivity(it);
6.调用发短信的程序
Intent it = newIntent(Intent.ACTION_VIEW); it.putExtra("sms_body","TheSMS text"); it.setType("vnd.android-dir/mms-sms"); startActivity(it);
7.发送短信
Uri uri =Uri.parse("smsto:0800000123"); Intent it = newIntent(Intent.ACTION_SENDTO, uri); it.putExtra("sms_body","TheSMS text"); startActivity(it);Stringbody="this is sms demo";Intent mmsintent = newIntent(Intent.ACTION_SENDTO, Uri.fromParts("smsto", number,null));mmsintent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_BODY,body);mmsintent.putExtra(Messaging.KEY_ACTION_SENDTO_COMPOSE_MODE,true);mmsintent.putExtra(Messaging.KEY_ACTION_SENDTO_EXIT_ON_SENT,true);startActivity(mmsintent);
8.发送彩信
Uri uri =Uri.parse("content://media/external/images/media/23"); Intent it = newIntent(Intent.ACTION_SEND); it.putExtra("sms_body","some text"); it.putExtra(Intent.EXTRA_STREAM, uri); it.setType("image/png"); startActivity(it);StringBuilder sb =newStringBuilder();sb.append("file://");sb.append(fd.getAbsoluteFile());Intent intent = newIntent(Intent.ACTION_SENDTO, Uri.fromParts("mmsto", number,null));// Below extra datas are all optional.intent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_SUBJECT,subject);intent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_BODY,body);intent.putExtra(Messaging.KEY_ACTION_SENDTO_CONTENT_URI,sb.toString());intent.putExtra(Messaging.KEY_ACTION_SENDTO_COMPOSE_MODE,composeMode);intent.putExtra(Messaging.KEY_ACTION_SENDTO_EXIT_ON_SENT,exitOnSent);startActivity(intent);
9.发送Email
Uri uri =Uri.parse("mailto:xxx@abc.com");Intent it = newIntent(Intent.ACTION_SENDTO, uri);startActivity(it);Intent it =newIntent(Intent.ACTION_SEND); it.putExtra(Intent.EXTRA_EMAIL,"me@abc.com"); it.putExtra(Intent.EXTRA_TEXT,"Theemail body text"); it.setType("text/plain"); startActivity(Intent.createChooser(it,"Choose Email Client"));Intent it=newIntent(Intent.ACTION_SEND);String[] tos={"me@abc.com"};String[]ccs={"you@abc.com"}; it.putExtra(Intent.EXTRA_EMAIL, tos); it.putExtra(Intent.EXTRA_CC, ccs); it.putExtra(Intent.EXTRA_TEXT,"Theemail body text"); it.putExtra(Intent.EXTRA_SUBJECT,"Theemail subject text"); it.setType("message/rfc822"); startActivity(Intent.createChooser(it,"Choose Email Client")); Intent it = newIntent(Intent.ACTION_SEND); it.putExtra(Intent.EXTRA_SUBJECT,"Theemail subject text"); it.putExtra(Intent.EXTRA_STREAM,"file:///sdcard/mysong.mp3"); sendIntent.setType("audio/mp3"); startActivity(Intent.createChooser(it,"Choose Email Client"));
10.播放多媒体
Intent it =newIntent(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 =newIntent(Intent.ACTION_VIEW,uri); startActivity(it);
11.uninstall apk
Uri uri =Uri.fromParts("package", strPackageName,null); Intent it = newIntent(Intent.ACTION_DELETE, uri); startActivity(it);
12.install apk
UriinstallUri = Uri.fromParts("package","xxx", null);returnIt= newIntent(Intent.ACTION_PACKAGE_ADDED, installUri);
打开照相机
<1>Intent i = new Intent(Intent.ACTION_CAMERA_BUTTON, null); this.sendBroadcast(i); <2>long dateTaken = System.currentTimeMillis(); String name = createName(dateTaken) +".jpg"; fileName = folder + name; ContentValuesvalues= new ContentValues();values.put(Images.Media.TITLE, fileName);values.put("_data", fileName);values.put(Images.Media.PICASA_ID, fileName);values.put(Images.Media.DISPLAY_NAME, fileName);values.put(Images.Media.DESCRIPTION, fileName);values.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, fileName); Uri photoUri = getContentResolver().insert( MediaStore.Images.Media.EXTERNAL_CONTENT_URI,values); Intent inttPhoto = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); inttPhoto.putExtra(MediaStore.EXTRA_OUTPUT, photoUri); startActivityForResult(inttPhoto,10);
14.从gallery选取图片
Intent i =newIntent(); i.setType("image/*"); i.setAction(Intent.ACTION_GET_CONTENT); startActivityForResult(i,11);
打开录音机
Intent mi =newIntent(Media.RECORD_SOUND_ACTION); startActivity(mi);
16.显示应用详细列表
Uri uri =Uri.parse("market://details?id=app_id"); Intent it =newIntent(Intent.ACTION_VIEW,uri); startActivity(it);//where app_id is the application ID, findthe ID//by clicking on your application on Markethome//page, and notice the ID from the addressbar刚才找app id未果，结果发现用packagename也可以 Uri uri =Uri.parse("market://details?id="); 这个简单多了
17寻找应用
Uri uri =Uri.parse("market://search?q=pname:pkg_name"); Intent it =newIntent(Intent.ACTION_VIEW,uri); startActivity(it);//where pkg_name is the full package pathfor an application
18打开联系人列表
<1> Intent i =newIntent(); i.setAction(Intent.ACTION_GET_CONTENT); i.setType("vnd.android.cursor.item/phone"); startActivityForResult(i, REQUEST_TEXT); <2> Uri uri = Uri.parse("content://contacts/people"); Intent it =newIntent(Intent.ACTION_PICK, uri); startActivityForResult(it, REQUEST_TEXT);
19 打开另一程序
Intent i =newIntent(); ComponentName cn = newComponentName("com.yellowbook.android2","com.yellowbook.android2.AndroidSearch"); i.setComponent(cn); i.setAction("android.intent.action.MAIN"); startActivityForResult(i, RESULT_OK);
20.调用系统编辑添加联系人（高版本SDK有效）：
Intent it = newIntent(Intent.ACTION_INSERT_OR_EDIT); it.setType("vnd.android.cursor.item/contact");//it.setType(Contacts.CONTENT_ITEM_TYPE);it.putExtra("name","myName"); it.putExtra(android.provider.Contacts.Intents.Insert.COMPANY,"organization"); it.putExtra(android.provider.Contacts.Intents.Insert.EMAIL,"email"); it.putExtra(android.provider.Contacts.Intents.Insert.PHONE,"homePhone"); it.putExtra(android.provider.Contacts.Intents.Insert.SECONDARY_PHONE,"mobilePhone"); it.putExtra( android.provider.Contacts.Intents.Insert.TERTIARY_PHONE,"workPhone"); it.putExtra(android.provider.Contacts.Intents.Insert.JOB_TITLE,"title"); startActivity(it);
21.调用系统编辑添加联系人（全有效）：
Intent intent = newIntent(Intent.ACTION_INSERT_OR_EDIT); intent.setType(People.CONTENT_ITEM_TYPE); intent.putExtra(Contacts.Intents.Insert.NAME,"My Name"); intent.putExtra(Contacts.Intents.Insert.PHONE,"+1234567890"); intent.putExtra(Contacts.Intents.Insert.PHONE_TYPE,Contacts.PhonesColumns.TYPE_MOBILE); intent.putExtra(Contacts.Intents.Insert.EMAIL,"com@com.com"); intent.putExtra(Contacts.Intents.Insert.EMAIL_TYPE, Contacts.ContactMethodsColumns.TYPE_WORK); startActivity(intent);
★intent action大全：
android.intent.action.ALL_APPS
android.intent.action.ANSWER
android.intent.action.ATTACH_DATA
android.intent.action.BUG_REPORT
android.intent.action.CALL
android.intent.action.CALL_BUTTON
android.intent.action.CHOOSER
android.intent.action.CREATE_LIVE_FOLDER
android.intent.action.CREATE_SHORTCUT
android.intent.action.DELETE
android.intent.action.DIAL
android.intent.action.EDIT
android.intent.action.GET_CONTENT
android.intent.action.INSERT
android.intent.action.INSERT_OR_EDIT
android.intent.action.MAIN
android.intent.action.MEDIA_SEARCH
android.intent.action.PICK
android.intent.action.PICK_ACTIVITY
android.intent.action.RINGTONE_PICKER
android.intent.action.RUN
android.intent.action.SEARCH
android.intent.action.SEARCH_LONG_PRESS
android.intent.action.SEND
android.intent.action.SENDTO
android.intent.action.SET_WALLPAPER
android.intent.action.SYNC
android.intent.action.SYSTEM_TUTORIAL
android.intent.action.VIEW
android.intent.action.VOICE_COMMAND
android.intent.action.WEB_SEARCH
android.net.wifi.PICK_WIFI_NETWORK
android.settings.AIRPLANE_MODE_SETTINGS
android.settings.APN_SETTINGS
android.settings.APPLICATION_DEVELOPMENT_SETTINGS
android.settings.APPLICATION_SETTINGS
android.settings.BLUETOOTH_SETTINGS
android.settings.DATA_ROAMING_SETTINGS
android.settings.DATE_SETTINGS
android.settings.DISPLAY_SETTINGS
android.settings.INPUT_METHOD_SETTINGS
android.settings.INTERNAL_STORAGE_SETTINGS
android.settings.LOCALE_SETTINGS
android.settings.LOCATION_SOURCE_SETTINGS
android.settings.MANAGE_APPLICATIONS_SETTINGS
android.settings.MEMORY_CARD_SETTINGS
android.settings.NETWORK_OPERATOR_SETTINGS
android.settings.QUICK_LAUNCH_SETTINGS
android.settings.SECURITY_SETTINGS
android.settings.SETTINGS
android.settings.SOUND_SETTINGS
android.settings.SYNC_SETTINGS
android.settings.USER_DICTIONARY_SETTINGS
android.settings.WIFI_IP_SETTINGS
android.settings.WIFI_SETTINGS
android.settings.WIRELESS_SETTINGS
http://segmentfault.com/a/1190000000646719
