下文来自：
http://blog.csdn.net/meizhen51/archive/2011/04/08/6310821.aspx
--------------------------------------------------------------------------------------------------------
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。
下面列出几种Intent的用法
显示网页:
- Uri uri = Uri.parse("http://www.google.com");
- Intent it = new Intent(Intent.ACTION_VIEW,uri);
- startActivity(it);
复制代码
显示地图:
- Uri uri = Uri.parse("geo:38.899533,-77.036476");
- Intent it = new Intent(Intent.Action_VIEW,uri);
- startActivity(it);
复制代码
路径规划:
- 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);
复制代码
拨打电话:
调用拨号程序
- Uri uri = Uri.parse("tel:xxxxxx");
- Intent it = new Intent(Intent.ACTION_DIAL, uri);
- startActivity(it);
复制代码
- Uri uri = Uri.parse("tel.xxxxxx");
- Intent it =new Intent(Intent.ACTION_CALL,uri);
- 要使用这个必须在配置文件
中加入<uses-permission id="android
.permission.CALL_PHONE" />
复制代码
发送SMS/MMS
调用发送短信
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);
复制代码
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);
复制代码
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);
复制代码
发送Email
- Uri uri = Uri.parse("mailto:xxx@abc.com");
- Intent it = new Intent(Intent.ACTION_SENDTO, uri);
- startActivity(it);
复制代码
- Intent it = new Intent(Intent.ACTION_SEND);
- it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com");
- it.putExtra(Intent.EXTRA_TEXT, "The email body text");
- it.setType("text/plain");
- startActivity(Intent.createChooser(it, "Choose Email Client"));
复制代码
- Intent it=new Intent(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, "The email body text");
- it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
- it.setType("message/rfc822");
- startActivity(Intent.createChooser(it, "Choose Email Client"));
复制代码
添加附件
- 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"));
复制代码
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);
复制代码
- Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
- Intent it = new Intent(Intent.ACTION_VIEW, uri);
- startActivity(it);
复制代码
Uninstall 程序
- Uri uri = Uri.fromParts("package", strPackageName, null);
- Intent it = new Intent(Intent.ACTION_DELETE, uri);
- startActivity(it);
复制代码
uninstall apk
- Uri uninstallUri = Uri.fromParts("package", "xxx", null);
- returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);
复制代码
install apk
- Uri installUri = Uri.fromParts("package", "xxx", null);
- returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);
复制代码
play audio
- Uri playUri = Uri.parse("file:///sdcard/download/everything.mp3");
- returnIt = new Intent(Intent.ACTION_VIEW, playUri);
复制代码
- //发送附件
- Intent it = new Intent(Intent.ACTION_SEND);
- it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
- it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/eoe.mp3");
- sendIntent.setType("audio/mp3");
- startActivity(Intent.createChooser(it, "Choose Email Client"));
- //搜索应用
- Uri uri = Uri.parse("market://search?q=pname:pkg_name");
- Intent it = new Intent(Intent.ACTION_VIEW, uri);
- startActivity(it);
- //where pkg_name is the full package path for an application
- //显示指定应用的详细页面（这个好像不支持了，找不到app_id）
- Uri uri = Uri.parse("market://details?id=app_id");
- Intent it = new Intent(Intent.ACTION_VIEW, uri);
- startActivity(it);
- //where app_id is the application ID, find the ID
- //by clicking on your application on Market home
- //page, and notice the ID from the address bar
玩过Android的都清楚， Camera有俩种模式：照相模式和录像模式。
启动录像模式：
Intent i = new Intent();
i.setAction(“android.media.action.VIDEO_CAMERA
“);
startActivity(i);
启用照相模式：
Intent i = new Intent();
i.setAction(“android.media.action.STILL_IMAGE_CAMERA
“);
startActivity(i);