//调用浏览器

Uri uri = Uri.parse("");
Intent it  = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);

//显示某个坐标在地图上

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

//显示路径

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);

//拨打电话

Uri uri = Uri.parse("tel:10086");
Intent it = new Intent(Intent.ACTION_DIAL, uri); 
startActivity(it); 

Uri uri = Uri.parse("tel.10086");
Intent it =new Intent(Intent.ACTION_CALL,uri);
需要添加 <uses-permission id="android.permission.CALL_PHONE" /> 这个权限到androidmanifest.xml

//发送短信或彩信

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:10086");  
Intent it = new Intent(Intent.ACTION_SENDTO, uri);  
it.putExtra("sms_body", "cwj");  
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);

//发送邮件 
Uri uri = Uri.parse("mailto:android123@163.com");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);

Intent it = new Intent(Intent.ACTION_SEND);  
it.putExtra(Intent.EXTRA_EMAIL, android123@163.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"));  

//播放媒体文件

Intent it = new Intent(Intent.ACTION_VIEW);
Uri uri = Uri.parse("file:///sdcard/cwj.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); 

//卸载APK

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

//卸载apk 2
Uri uninstallUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);

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

//播放音乐

Uri playUri = Uri.parse("file:///sdcard/download/sth.mp3");
returnIt = new Intent(Intent.ACTION_VIEW, playUri);

//发送附近

Intent it = new Intent(Intent.ACTION_SEND); 
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text"); 
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/cwj.mp3"); 
sendIntent.setType("audio/mp3"); 
startActivity(Intent.createChooser(it, "Choose Email Client"));

//market上某个应用信，pkg_name就是应用的packageName

Uri uri = Uri.parse("market://search?q=pname:pkg_name"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 

//market上某个应用信息，app_id可以通过www网站看下

Uri uri = Uri.parse("market://details?id=app_id"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 

//调用搜索

Intent intent = new Intent();
intent.setAction(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY,"android123")
startActivity(intent);