// 检查packageName对应app是否安装
public static boolean checkApkExist(Context context, String packageName) {
if (packageName == null || "".equals(packageName))
return false;
try {
context.getPackageManager().getApplicationInfo(packageName,
PackageManager.GET_UNINSTALLED_PACKAGES);
return true;
} catch (NameNotFoundException e) {
return false;
}
}