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<wbr></wbr>ion 和type
// SIM imp<wbr></wbr>ort
Intent imp<wbr></wbr>ortIntent = new Intent(Intent.ACT<wbr></wbr>ION_VIEW);
imp<wbr></wbr>ortIntent.setType("vnd.android.cursor.item/sim-contact");
imp<wbr></wbr>ortIntent.setClassName("com.android.phone", "com.android.phone.SimContacts");
menu.add(0, 0, 0, R.string.imp<wbr></wbr>ortFromSim)
.setIcon(R.drawable.ic_menu_imp<wbr></wbr>ort_contact)
.setIntent(imp<wbr></wbr>ortIntent);

2. 指定act<wbr></wbr>ion, da<wbr></wbr>ta和type
(1)隐式查找type
示例代码：
uri: content://simcontacts/simPeople/(id)
intent = new Intent("android.intent.act<wbr></wbr>ion.SIMEDIT",uri);
startActivity(intent);

程序会很据da<wbr></wbr>ta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>
<act<wbr></wbr>ion android:name="android.intent.act<wbr></wbr>ion.SIMEDIT" />
<category android:name="android.intent.category.DEFAULT" />
<da<wbr></wbr>ta 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:

1. Uri uri = Uri.parse("http://www.google.com");
2. Intent it= new Intent(Intent.ACTION_VIEW,uri);
3. startActivity(it);

显示地图:

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

路径规划:

1. Uri uri = Uri.parse("http://maps.google.com/maps?f=dsaddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
2. Intent it = new Intent(Intent.ACTION_VIEW,URI);
3. startActivity(it);

拨打电话:
调用拨号程序

1. Uri uri = Uri.parse("tel:xxxxxx");
2. Intent it = new Intent(Intent.ACTION_DIAL, uri);
3. startActivity(it);

1. Uri uri = Uri.parse("tel.xxxxxx");
2. Intent it =new Intent(Intent.ACTION_CALL,uri);
3. 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

1. Intent it = new Intent(Intent.ACTION_VIEW);
2. it.putExtra("sms_body", "The SMS text");
3. it.setType("vnd.android-dir/mms-sms");
4. startActivity(it);

发送短信

1. Uri uri = Uri.parse("smsto:0800000123");
2. Intent it = new Intent(Intent.ACTION_SENDTO, uri);
3. it.putExtra("sms_body", "The SMS text");
4. startActivity(it);

发送彩信

1. Uri uri = Uri.parse("content://media/external/images/media/23");
2. Intent it = new Intent(Intent.ACTION_SEND);
3. it.putExtra("sms_body", "some text");
4. it.putExtra(Intent.EXTRA_STREAM, uri);
5. it.setType("image/png");
6. startActivity(it);

发送Email

2. Uri uri = Uri.parse("mailto:[e-mail]");
3. Intent it = new Intent(Intent.ACTION_SENDTO, uri);
4. startActivity(it);

1. Intent it = new Intent(Intent.ACTION_SEND);
2. it.putExtra(Intent.EXTRA_EMAIL, "[e-mail]");
3. it.putExtra(Intent.EXTRA_TEXT, "The email body text");
4. it.setType("text/plain");
5. startActivity(Intent.createChooser(it, "Choose Email Client"));

1. Intent it=new Intent(Intent.ACTION_SEND);
2. String[] tos={"[e-mail]"};
3. String[] ccs={"[e-mail]"};
4. it.putExtra(Intent.EXTRA_EMAIL, tos);
5. it.putExtra(Intent.EXTRA_CC, ccs);
6. it.putExtra(Intent.EXTRA_TEXT, "The email body text");
7. it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
8. it.setType("message/rfc822");
9. startActivity(Intent.createChooser(it, "Choose Email Client"));

添加附件

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

播放多媒体

2. Intent it = new Intent(Intent.ACTION_VIEW);
3. Uri uri = Uri.parse("file:///sdcard/song.mp3");
4. it.setDataAndType(uri, "audio/mp3");
5. startActivity(it);

1. Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
2. Intent it = new Intent(Intent.ACTION_VIEW, uri);
3. startActivity(it);

Uninstall 程序

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

uninstall apk

1. Uri uninstallUri = Uri.fromParts("package", "xxx", null);
3. returnIt = new Intent(Intent.ACTION_DELETE, uninstallUri);

install apk

1. Uri installUri = Uri.fromParts("package", "xxx", null);
3. returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);

play audio

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

1. //发送附件
2. Intent it = new Intent(Intent.ACTION_SEND);
3. it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
4. it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/eoe.mp3");
5. sendIntent.setType("audio/mp3");
6. startActivity(Intent.createChooser(it, "Choose Email Client"));

1. //搜索应用
2. Uri uri = Uri.parse("market://search?q=pname:pkg_name");
3. Intent it = new Intent(Intent.ACTION_VIEW, uri);
4. startActivity(it);
5. //where pkg_name is the full package path for an application
7. //显示指定应用的详细页面（这个好像不支持了，找不到app_id）
8. Uri uri = Uri.parse("market://details?id=app_id");
9. Intent it = new Intent(Intent.ACTION_VIEW, uri);
10. startActivity(it);
11. //where app_id is the application ID, find the ID
12. //by clicking on your application on Market home
13. //page, and notice the ID from the address bar