android一些系统相关的东西

添加快捷方式和删除快捷方式:

private void addShortcut() {

        Intent shortcut = new Intent(

                "com.android.launcher.action.INSTALL_SHORTCUT");

        // 快捷方式的名称

        shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME,

                getString(R.string.app_name));

        shortcut.putExtra("duplicate", false); // 不同意反复创建

        // 指定当前的Activity为快捷方式启动的对象

        ComponentName comp = new ComponentName(this.getPackageName(),

                getClass().getName());

        shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, new Intent(

                Intent.ACTION_MAIN).setComponent(comp));

        // 快捷方式的图标

        ShortcutIconResource iconRes = Intent.ShortcutIconResource.fromContext(

                this, R.drawable.icon);

        shortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, iconRes);

        sendBroadcast(shortcut);

    }

    /**

     * 删除程序的快捷方式。

*/

    private void deleteShortcuts() {

        Intent shortcut = new Intent(

                "com.android.launcher.action.UNINSTALL_SHORTCUT");

        // 快捷方式的名称

        shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME,

                getString(R.string.app_name));

        // 指定当前的Activity为快捷方式启动的对象

        ComponentName comp = new ComponentName(this.getPackageName(),

                getClass().getName());

        shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, new Intent(

                Intent.ACTION_MAIN).setComponent(comp));

        sendBroadcast(shortcut);

    }

发邮件:

	public boolean sendEmail(String to[], String subject, String body,

			String attachementFilePath) {

		final Intent emailIntent = new Intent(

				android.content.Intent.ACTION_SEND);

		emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, to);

		emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, subject);

		emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, body);

		if (attachementFilePath != null) {

			Uri attachmentUri = null;

			try {

				File file = new File(attachementFilePath);

				if (file == null) {

					Log.d("[RC] Mail", "File error: " + attachementFilePath);

				} else if (!file.exists()) {

					Log.d("[RC] Mail", "File does not exist: "

							+ attachementFilePath);

				} else if (!file.canRead()) {

					Log.d("[RC] Mail", "File can't be read: "

							+ attachementFilePath);

				} else if (!file.isFile()) {

					Log.d("[RC] Mail", "Invalid file: " + attachementFilePath);

				} else {

					attachmentUri = Uri.fromFile(file);

					Log.d("[RC] Mail", "Attachement path[size=" + file.length()

							+ "]: " + attachementFilePath);

					Log.d("[RC] Mail",

							"Attachement URI: " + attachmentUri.toString());

				}

			} catch (java.lang.Throwable ex) {

				Log.e("[RC] Mail", "Error: " + ex.toString());

			}

			if (attachmentUri != null) {

				emailIntent.putExtra(Intent.EXTRA_STREAM, attachmentUri);

			}

		}

		emailIntent.setType(PLAIN_TEXT);

		List<ResolveInfo> availableSoft = (List<ResolveInfo>) mContext

				.getPackageManager().queryIntentActivities(emailIntent,

						PackageManager.MATCH_DEFAULT_ONLY);

		if (availableSoft.size() <= 0) {

			return false;

		}

		mContext.startActivity(Intent.createChooser(emailIntent, mContext

				.getResources().getString(R.string.menu_sendEmail)));

		return true;

	}

默认使用Google chrome打开WebView:

//new Intent(Intent.ACTION_VIEW, uri)

	public void startActiviyByChromeIfExists(Context context,

			Intent intent) {

		try {

			Log.d("startActiviyByChromeIfExists",

					"Intent Scheme: " + intent.getScheme());

		} catch (Exception e) {

		}

		if (context != null && intent != null) {

			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

			List<ResolveInfo> availableSoft = (List<ResolveInfo>) context

					.getPackageManager().queryIntentActivities(intent,

							PackageManager.MATCH_DEFAULT_ONLY);

			for (ResolveInfo info : availableSoft) {

				if ("com.android.chrome".equals(info.activityInfo.packageName)) {

					intent.setComponent(new ComponentName(

							info.activityInfo.packageName,

							info.activityInfo.name));

					context.startActivity(intent);

					return;

				}

			}

			if (availableSoft.size() == 0) {

				try {

					Toast.makeText(mContext, R.string.setting_no_browser_installed, Toast.LENGTH_LONG).show();

				} catch (Exception e) {

					Log.e("startActiviyByChromeIfExists", e.getMessage());

				}

			} else {

				context.startActivity(intent);

			}

		}

	}

声明权限:

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

关机广播:

<receiver android:name=".ShutdownReceiver">

            <intent-filter>

                <action android:name="android.intent.action.ACTION_SHUTDOWN"/>

            </intent-filter>

        </receiver>   

接受开机广播:

  <receiver android:name="BootBroadcast" >

            <intent-filter>

                <action android:name="android.intent.action.BOOT_COMPLETED"/>

            </intent-filter>

        </receiver>