Android Intent应用，打开网页，安装程序，打电话，打开地图等功能

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 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("http://www.google.com");
 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 = new Intent(Intent.Action_VIEW,uri);
 startActivity(it);

 4.路径规划
 Uri uri = Uri.parse("http://maps.google.com/maps?f=dsaddr=startLat startLng&daddr=endLat endLng&hl=en");
 Intent it = new Intent(Intent.ACTION_VIEW,URI);
 startActivity(it);

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



 7.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);
 String body="this is sms demo";
 Intent mmsintent = new Intent(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 = new Intent(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.append(fd.getAbsoluteFile());
 Intent intent = new Intent(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:[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"));
 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"));


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


 12.安装apk
 Uri installUri = Uri.fromParts("package", "xxx", null);
 returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);