android系统调用
android 中intent是经常要用到的。不管是页面牵转，还是传递数据，或是调用外部程序，系统功能都要用到intent。在做了一些intent的例子之后，整理了一下intent，希望对大家有用。由于intent内容太多，不可能真的写全，难免会有遗落，以后我会随时更新。如果你们有疑问或新的intent内容，希望交流。
★intent大全：
1.从google搜索内容
Intent intent = new Intent();
intent.setAction(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY,"searchString")
startActivity(intent);
 
2.浏览网页
Uri uri =Uri.parse("le");
Intent it = new Intent(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("le/maps?f=dsaddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
Intent it = newIntent(Intent.ACTION_VIEW,URI);
startActivity(it);
 
5.
Uri uri =Uri.parse("tel:xxxxxx");
Intent it = new Intent(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.
Uri uri =Uri.parse("smsto:0800000123");   
Intent it = newIntent(Intent.ACTION_SENDTO, uri);   
it.putExtra("sms_body", "TheSMS text");   
startActivity(it);
String body="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 = new StringBuilder();
sb.append("file://");
sb.AbsoluteFile());
Intent intent = newIntent(Intent.ACTION_SENDTO, Uri.fromParts("mmsto", number, null));
android11系统更新包下载// 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_String());
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");
Intent it = newIntent(Intent.ACTION_SENDTO, uri);
startActivity(it);
Intent it = new Intent(Intent.ACTION_SEND);   
it.putExtra(Intent.EXTRA_EMAIL,"me@abc");   
it.putExtra(Intent.EXTRA_TEXT, "Theemail body text");   
it.setType("text/plain");   
ateChooser(it,"Choose Email Client"));
Intent it=new Intent(Intent.ACTION_SEND);     
String[] tos={"me@abc"};     
String[]ccs={"you@abc"};     
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");     
ateChooser(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");   
ateChooser(it,"Choose Email Client"));
 
10.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);
Uri uri =Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,"1");   
Intent it = new Intent(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
Uri installUri = Uri.fromParts("package","xxx", null);
returnIt = newIntent(Intent.ACTION_PACKAGE_ADDED, installUri);
 
13. 打开照相机
   <1>Intent i = new Intent(Intent.ACTION_CAMERA_BUTTON, null);