Uri uri = Uri.parse("http://google.com");  Intent it = new Intent(Intent.ACTION_VIEW, uri);  startActivity(it);

 Uri uri = Uri.parse("geo:38.899533,-77.036476");  Intent it = new Intent(Intent.ACTION_VIEW, uri);   startActivity(it); 

 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);  //where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456 

//叫出拨号程序 Uri uri = Uri.parse("tel:0800000123");  Intent it = new Intent(Intent.ACTION_DIAL, uri);  startActivity(it);  //直接打电话出去  Uri uri = Uri.parse("tel:0800000123");  Intent it = new Intent(Intent.ACTION_CALL, uri);  startActivity(it);  //用這個，要在 AndroidManifest.xml 中，加上  //<uses-permission id="android.permission.CALL_PHONE" /> 

 //调用短信程序 Intent it = new Intent(Intent.ACTION_VIEW, uri);  it.putExtra("sms_body", "The SMS text");   it.setType("vnd.android-dir/mms-sms");  startActivity(it); //传送消息 Uri uri = Uri.parse("smsto://0800000123");  Intent it = new Intent(Intent.ACTION_SENDTO, uri);  it.putExtra("sms_body", "The SMS text");  startActivity(it); //传送 MMS  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); 

 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);  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")); 

服务调用-多媒体

Uri uri = Uri.parse("file:///sdcard/song.mp3");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
it.setType("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);

服务调用-Market相关

//寻找某个应用
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 //显示某个应用的相关信息
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

服务调用-Uninstall应用

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