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); }

}

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)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()           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 startLng&daddr=endLat endLng&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