Intent在Android中的几种用法

转自东方尚智沈大海csdn博客：

如果是从BroadcastReceiver 启动一个新的Activity , 不要忘记i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 

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 
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)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
   
<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<uses-permission id="android .permission.CALL_PHONE" />

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);  

//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