1. Intent open a picture file public:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); Uri uri = Uri.fromFile(new File("/mnt/sdcard/images/001041580.jpg")); intent.setDataAndType (uri, "image/*"); this.startActivity(intent);
2. Intent to open a PDF file:
Intent intent = new Intent("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK);
Uri uri = Uri.fromFile(new
File("file:///android_asset/helphelp.pdf"));
intent.setDataAndType (uri, "application/pdf");
this.startActivity(intent);
3. Intent to open a text file:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); if (paramBoolean) { Uri uri1 = Uri.parse (param); intent.setDataAndType (URI1, "text/plain"); } else { Uri uri = Uri.fromFile(new File("/mnt/sdcard/hello.txt")); intent.setDataAndType (URI2, "text/plain"); } this.startActivity(intent);
4. Intent to open the audio file:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); intent.putExtra ("oneshot", 0); intent.putExtra ("configchange", 0); Uri uri = Uri.fromFile(new File("/mnt/sdcard/ren.mp3")); intent.setDataAndType (uri, "audio/*"); this.startActivity(intent);
5. Intent to open the video file:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); intent.putExtra ("oneshot", 0); intent.putExtra ("configchange", 0); Uri uri = Uri.fromFile(new File("/mnt/sdcard/ice.avi")); intent.setDataAndType (uri, "video/*"); this.startActivity(intent);
6. Intent to open the CHM file:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); Uri uri = Uri.fromFile(new File("/mnt/sdcard/ice.chm")); intent.setDataAndType (uri, "application / x-chm"); this.startActivity(intent);
7. Intent to open a Word document:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); Uri uri = Uri.fromFile(new File("/system/etc/help.doc")); intent.setDataAndType(uri, "application/msword"); this.startActivity(intent);
8. Android Excel intent:
Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("android.intent.category.DEFAULT"); intent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); Uri uri = Uri.fromFile(new File("/mnt/sdcard/Book1.xls")); intent.setDataAndType (uri, "application/vnd.ms-excel"); this.startActivity(intent);
10. Display Html page:
Uri uri = Uri.parse ("http://www.google.com");
Intent intent = new Intent (Intent.ACTION_VIEW, uri);
this.startActivity(intent);
11. Show map:
Uri uri = Uri.parse ("geo: 38.899533, -77.036476");
Intent intent = new Intent (Intent.Action_VIEW, uri);
this.startActivity(intent);
12. Call the dialer:
Uri uri = Uri.parse ("tel: xxxxxx");
Intent intent = new Intent (Intent.ACTION_DIAL, uri);
this.startActivity(intent);
13. Call :
Uri uri = Uri.parse ("tel: xxxxxx");
Intent it = new Intent (Intent.ACTION_CALL, uri);
this.startActivity(intent);
/*permission:
<uses-permission id="android.permission.CALL_PHONE">
</uses-permission> */
14. Call to send text messages of the program :
Intent intent = new Intent (Intent.ACTION_VIEW); intent.putExtra("sms_body", "The SMS text"); intent.setType("vnd.android-dir/mms-sms"); this.startActivity(intent);
15. Send SMS :
Uri uri = Uri.parse("smsto:0800000123");
Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
intent.putExtra("sms_body", "The SMS text");
this.startActivity(intent);
16. Send MMS :
Uri uri = Uri.parse("content://media/external/images/media/23");
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra("sms_body", "some text");
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.setType("image/png");
this.startActivity(intent);
17. Send an Email :
Uri uri = Uri.parse ("mailto: xxx@abc.com");
Intent intent = new Intent (Intent.ACTION_SENDTO, uri);
this.startActivity(intent);
18. Send an Email with body :
Intent intent = new Intent(Intent.ACTION_SEND); intent.putExtra(Intent.EXTRA_EMAIL,"me@abc.com"); intent.putExtra(Intent.EXTRA_TEXT,"The email body text"); intent.setType ("text/plain"); this.startActivity( Intent.createChooser(intent, "Choose Email Client"));
19. Send an Email with body,to,cc :
Intent intent = new Intent(Intent.ACTION_SEND); String [] tos ={"me@abc.com"}; String [] ccs ={"you@abc.com"}; intent.putExtra(Intent.EXTRA_EMAIL, tos); intent.putExtra(Intent.EXTRA_CC, ccs); intent.putExtra(Intent.EXTRA_TEXT, "The email body text"); intent.putExtra(Intent.EXTRA_SUBJECT, "The email subject text"); intent.setType("message/rfc822"); this.startActivity( Intent.createChooser(intent, "Choose Email Client"));
20. Send an Email with attachments :
Intent intent = new Intent(Intent.ACTION_SEND); intent.putExtra(Intent.EXTRA_SUBJECT,"The email subject text"); intent.putExtra(Intent.EXTRA_STREAM,"file :///sdcard/mysong.mp3"); sendIntent.setType("audio/mp3"); this.startActivity( Intent.createChooser(intent,"Choose Email Client"));
21. Uninstall the program :
Uri uri = Uri.fromParts ("package", strPackageName, null);
Intent intent = new Intent (Intent.ACTION_DELETE, uri);
this.startActivity(
Intent.createChooser(intent,"Choose Email Client"));
22. Install the apk :
Uri installUri = Uri.fromParts("package", "xxx", null);
returnIt = new Intent(Intent.ACTION_PACKAGE_ADDED, installUri);
this.startActivity(returnIt);
23. Search applications :
Uri uri = Uri.parse("market://search?Q=pname:pkg_name");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
this.startActivity(intent);
//Where pkg_name is the full package path for an application
24. Google Search Launch Web Browser :
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH); String term = "Android"; intent.putExtra(SearchManager.QUERY, term); activity.startActivity(intent);
25. Send text using Intent (to messaging apps) :
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH); String msgBody = "This is message"; Intent intent = new Intent(android.content.Intent.ACTION_SEND); intent.setType("text/plain"); intent.putExtra(android.content.Intent.EXTRA_SUBJECT, "message subject"); intent.putExtra(android.content.Intent.EXTRA_TEXT, msgBody); activity.startActivity(Intent.createChooser(intent, getResources(). getString(R.string.share_by_using)));
26. Create Shortcut on "Home Screen" :
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH); Intent toPrint = new Intent(this, anCreateshutcut.class); Intent addShortcut = new Intent ("com.android.launcher.action.INSTALL_SHORTCUT"); addShortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, "Shutcutname"); addShortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, toPrint); addShortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(this, R.drawable.icon)); Manifest file: <intent-filter> <action android:name="android.intent.action.CREATE_SHORTCUT"> <category android:name="android.intent.category.LAUNCHER"> </category></action></intent-filter> <uses-permission android:name="com.android.launcher. permission.INSTALL_SHORTCUT"> </uses-permission>
27. 清空手机 Cookie
CookieSyncManager.createInstance(getApplicationContext());
CookieManager.getInstance().removeAllCookie();
28. 用注释来控制隐藏字段 {@hide}
/** * Activity Action: Start this activity to request system shutdown. * The optional boolean extra field {@link #EXTRA_KEY_CONFIRM} can be set to true * to request confirmation from the user before shutting down. * * <p class="note">This is a protected intent that can only be sent * by the system. </p> * * {@hide} */ public static final String ACTION_REQUEST_SHUTDOWN = "android.intent.action.ACTION_REQUEST_SHUTDOWN";
不通过反射机制使用内部API和隐藏API的方法参考：http://luhuajcdd.iteye.com/blog/1242395