我想将文本放在背景图片的前面，而不是直接在背景图片的下面
.backgroundimg {
background-image: url("../Website Wireframes-18.png");
background-repeat:no-repeat;
background-size:cover;
height: 100vh;
width: 100vw;
}
<div class="row backgroundimg">
</div>
<div class="bootstrap-grid">
<div class="col-xs-12 col-md-6 col-lg-9">
.col-xs-12 .col-md-6 .col-lg-9
</div>
<div class="col-xs-12 col-md-6 col-lg-3">
.col-xs-12 .col-md-6 .col-lg-3
</div>
</div>
答案 0 :(得分：-1)
Gideon Chrapko
如果您想在图片之前放它，可以按照订单进行游戏。例如：
welcome.m
==========
#import "welcomepage.h"
#import "Register.h"
#import "login.h"
#import "AppDelegate.h"
#import "Student+CoreDataProperties.h"
#import "loginbtn.h"
#import "King+CoreDataProperties.h"
@interface welcomepage ()
{
AppDelegate *a;
NSManagedObjectContext *context;
}
@end
@implementation welcomepage
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (IBAction)login:(id)sender
{
loginbtn *lb=[[loginbtn alloc]init];
[self.navigationController pushViewController:lb animated:YES];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)register:(id)sender
{
a=(AppDelegate *)[UIApplication sharedApplication].delegate;
NSManagedObjectContext *context1=((AppDelegate *)[UIApplication sharedApplication].delegate).persistentContainer.viewContext;
Student *ss=[NSEntityDescription insertNewObjectForEntityForName:@"Student" inManagedObjectContext:context1];
ss.name=[NSString stringWithFormat:@"%@",_txtfld1.text];
ss.age=[NSString stringWithFormat:@"%@",_txtfld2.text];
ss.place=[NSString stringWithFormat:@"%@",_txtfld3.text];
[a saveContext];
if (_txtfld1.text.length && _txtfld2.text.length && _txtfld3.text.length != 0)
{
UIAlertView *al=[[UIAlertView alloc]initWithTitle:@"THANK YOU" message:@"DATA SUCESSFULLY SAVER. YOU CAN LOGIN NOW WITH YOUR PASSWORD AND NAME" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
[al show];
_txtfld1.text=@"";
_txtfld2.text=@"";
_txtfld3.text=@"";
Register *rg=[[Register alloc]init];
[self.navigationController pushViewController:rg animated:YES];
}
else
{
UIAlertView *al2=[[UIAlertView alloc]initWithTitle:@"WARRNING" message:@"PLEASE FILL THE DATA COMPLETELY" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
[al2 show];
}
}
===================================================
Register.m
==========
#import "Register.h"
#import "AppDelegate.h"
#import "Student+CoreDataProperties.h"
#import "welcomepage.h"
@interface Register ()<UITableViewDelegate,UITableViewDataSource>
{
AppDelegate *a;
NSManagedObjectContext *context01;
NSArray *array01;
}
@end
@implementation Register
- (void)viewDidLoad
{
[super viewDidLoad];
a=((AppDelegate *)[UIApplication sharedApplication].delegate);
context01=((AppDelegate *)[UIApplication sharedApplication].delegate).persistentContainer.viewContext;
// specifying nsrequest and nsentity
NSFetchRequest *req=[[NSFetchRequest alloc]init];
NSEntityDescription *entity01=[NSEntityDescription entityForName:@"Student" inManagedObjectContext:context01];
[req setEntity:entity01];
// putting datas from reto array
NSError *err=nil;
array01=[context01 executeFetchRequest:req error:&err];
// Do any additional setup after loading the view from its nib.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return array01.count;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 3;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *ci=@"hai";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:ci];
if (cell==nil) {
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ci];
}
if (indexPath.row==0) {
cell.textLabel.text=[[array01 objectAtIndex:indexPath.section]valueForKey:@"name"];
}
if (indexPath.row==1) {
cell.textLabel.text=[[array01 objectAtIndex:indexPath.section]valueForKey:@"age"];
}
if (indexPath.row==2) {
cell.textLabel.text=[[array01 objectAtIndex:indexPath.section]valueForKey:@"place"];
}
return cell;
}
==================================================
Loginbtn.m
============
#import "loginbtn.h"
#import "AppDelegate.h"
#import "Student+CoreDataProperties.h"
#import "login.h"
@interface loginbtn ()
{
AppDelegate *a;
NSArray *arraylb;
}
@end
@implementation loginbtn
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)lgbtn:(id)sender
{
a=(AppDelegate *)[UIApplication sharedApplication].delegate;
//xcode 8.2.1 specification code
NSManagedObjectContext *context=((AppDelegate *)[UIApplication sharedApplication].delegate).persistentContainer.viewContext;
//creating feathch request and entity
NSFetchRequest *req=[[NSFetchRequest alloc]init];
NSEntityDescription *entity=[NSEntityDescription entityForName:@"Student" inManagedObjectContext:context];
[req setEntity:entity];
// setting predicate
NSPredicate *pre=[NSPredicate predicateWithFormat:@"age like %@ and place like %@",_txt1.text,_txt2.text];
[req setPredicate:pre];
//creating error and array to store
NSError *err=nil;
arraylb=[[NSArray alloc]init];
arraylb=[context executeFetchRequest:req error:&err];
login *lg=[[login alloc]init];
if (arraylb.count!=0)
{
lg.array001=arraylb;
}
//
// if (arraylb.count!=0)
//// {
////
//// lv *lvi=[[lv alloc]init];
////
//// //passing value
//// lvi.array001=arraylb;
////
////
//// //lv.str1=self.tf1.text;
//// //lv.str2=self.tf2.text;
//// [self.navigationController pushViewController:lvi animated:YES];
////
////
//// }
//// else
//// {
//
// self.lb.text=@"Invalid username & password";
//
// }
//
[self.navigationController pushViewController:lg animated:YES];
}
=====================================================
Lohin.m
=========
#import "login.h"
#import "Student+CoreDataProperties.h"
#import "AppDelegate.h"
#import "loginbtn.h"
@interface login ()
{
AppDelegate *a;
NSArray *array01;
}
@end
@implementation login
- (void)viewDidLoad
{
[super viewDidLoad];
_txt11.text=[[_array001 objectAtIndex:0]valueForKey:@"name"];
_txt22.text=[[_array001 objectAtIndex:0]valueForKey:@"age"];
_txt33.text=[[_array001 objectAtIndex:0]valueForKey:@"place"];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
// Dispose of any resources that can be recreated.
}
否则，您可以在CSS文件中为类 .bootstrap-grid 使用 position：absolute 。 这样一来，您上方的文字将与图片的高度相同
希望对您有所帮助。祝你好运