Android检查某个应用是否存在

/*** 检查前台程序是否存在* * @param packageName* @return*/private boolean checkAppExist(String packageName) {if (packageName == null || "".equals(packageName))return false;try {ApplicationInfo info = getPackageManager().getApplicationInfo(packageName, PackageManager.GET_UNINSTALLED_PACKAGES);return true;} catch (NameNotFoundException e) {return false;}}