android intent用法

1. 指定action 和type // SIM import         Intent importIntent = new Intent(Intent.ACTION_VIEW);         importIntent.setType(“vnd.android.cursor.item/sim-contact”); importIntent.setClassName(“com.android.phone”, “com.android.phone.SimContacts”); menu.add(0, 0, 0, R.string.importFromSim)                 .setIcon(R.drawable.ic_menu_import_contact)                 .setIntent(importIntent);

2. 指定action, data和type (1)隐式查找type 示例代码： uri: content://simcontacts/simPeople/(id) intent = new Intent(“android.intent.action.SIMEDIT”,uri);             startActivity(intent);

程序会很据data中的uri去查找匹配的type（必须的） provider中的getType() case SIM_PEOPLE_ID:             return “vnd.android.cursor.item/sim-contact”; 配置文件中的filter设定 AndroidManifest.xml也可以自己设定type，但只能使用 setDataAndType()    

3. 其他设定intent的属性方式 Intent setComponent(ComponentName component)    Intent setClassName(Context packageContext, String className)    Intent setClassName(String packageName, String className)    Intent setClass(Context packageContext, Class<?> cls)

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);

显示地图: Uri uri = Uri.parse(“geo:38.899533,-77.036476″); Intent it = new Intent(Intent.Action_VIEW,uri); startActivity(it);

路径规划: Uri uri = Uri.parse(“http://maps.google.com/maps?f=dsaddr=startLat%20startLng&daddr=endLat%20endLng&hl=en”); Intent it = new Intent(Intent.ACTION_VIEW,URI); startActivity(it);

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); 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

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);  

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);  

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);

发送Email Uri uri = Uri.parse(“mailto:xxx@abc.com”); Intent it = new Intent(Intent.ACTION_SENDTO, uri); startActivity(it); 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”)); 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”));   

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”));

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);  

Uninstall 程序 Uri uri = Uri.fromParts(“package”, strPackageName, null); Intent it = new Intent(Intent.ACTION_DELETE, uri); startActivity(it);

uninstall apk Uri uninstallUri = Uri.fromParts(“package”, “xxx”, null); returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri); install apk Uri installUri = Uri.fromParts(“package”, “xxx”, null); returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri); play audio Uri playUri = Uri.parse(“file:///sdcard/download/everything.mp3″); returnIt = new Intent(Intent.ACTION_VIEW, playUri); //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);