Intent在Android中的几种用法

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);
 }


}

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);

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
 <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()

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

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Intent在Android中的几种用法