android 如何进入某个具体的应用管理页面

http://stackoverflow.com/questions/4421527/start-android-application-info-screen/4772481#4772481

　　private static final String SCHEME = "package";

    private static final String APP_PKG_NAME_21 = "com.android.settings.ApplicationPkgName";

    private static final String APP_PKG_NAME_22 = "pkg";

    private static final String APP_DETAILS_PACKAGE_NAME = "com.android.settings";

    private static final String APP_DETAILS_CLASS_NAME = "com.android.settings.InstalledAppDetails";

　　/** 进入管理应用程序的的详细信息页面 */
    public static void showInstalledAppDetails(Context context,
            String packageName) {
        Intent intent = new Intent();
        final int apiLevel = Build.VERSION.SDK_INT;
        if (apiLevel >= 9) { // above 2.3
            intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
            Uri uri = Uri.fromParts(SCHEME, packageName, null);
            intent.setData(uri);
        } else { // below 2.3
            final String appPkgName = (apiLevel == 8 ? APP_PKG_NAME_22
                    : APP_PKG_NAME_21);
            intent.setAction(Intent.ACTION_VIEW);
            intent.setClassName(APP_DETAILS_PACKAGE_NAME,
                    APP_DETAILS_CLASS_NAME);
            intent.putExtra(appPkgName, packageName);
        }
        context.startActivity(intent);
    }