public class MyReceiver extends BroadcastReceiver{

public static final String action="acc";
 public void onReceive(Context context, Intent intent) {
  Intent i=new Intent(context,Receivered.class);
  i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
  context.startActivity(i);
 }

}

1. 指定act ion 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act ion, da ta和type
(1)隱式查找type
示例代碼：
uri: content://simcontacts/simPeople/(id)
intent = new Intent("android.intent.action.SIMEDIT",uri);
            startActivity(intent);

程序會(huì)很據(jù)data中的uri去查找匹配的type（必須的）           
provider中的getType()           
case SIM_PEOPLE_ID:
            return "vnd.android.cursor.item/sim-contact"; 

配置文件中的filter設(shè)定          
AndroidManifest.xml
    <intent-filter>
                <action android:name="android.intent.action.SIMEDIT" />
                <category android:name="android.intent.category.DEFAULT" />         
                <data android:mimeType="vnd.android.cursor.item/sim-contact" />
      </intent-filter>

也可以自己設(shè)定type，但只能使用 setDataAndType()    
     
3. 其他設(shè)定intent的屬性方式
   Intent setComponent(ComponentName component)
   Intent setClassName(Context packageContext, String className)
   Intent setClassName(String packageName, String className)
   Intent setClass(Context packageContext, Class<?> cls)
  

Intent 應(yīng)該算是Android中特有的東西。你可以在Intent中指定程序 要執(zhí)行的動(dòng)作（比如：view,edit,dial），以及程序執(zhí)行到該動(dòng)作時(shí)所需要的資料 。都指定好后，只要調(diào)用startActivity()，Android系統(tǒng) 會(huì)自動(dòng)尋找最符合你指定要求的應(yīng)用 程序，并執(zhí)行該程序。

下面列出幾種Intent 的用法
顯示網(wǎng)頁:

Uri uri = Uri.parse("Intent it  = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);
顯示地圖:

Uri uri = Uri.parse("Intent it = new Intent(Intent.ACTION_VIEW,URI);
startActivity(it);
撥打電話:
調(diào)用撥號(hào)程序

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 多媒體

  
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);
//發(fā)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"));
//搜索應(yīng)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  

//顯示指定應(yīng)用的詳細(xì)頁面（這個(gè)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