我们如何创建一个像iOS 7 Safari中的通用搜索文本框。我知道如何创建谷歌搜索字段，但如何创建一个既具有谷歌搜索又具有URL搜索的文本框呢？
谷歌搜索字段：
-(void)SearchButtonClicked {
NSString *query = [maintext.text stringByReplacingOccurrencesOfString:@" " withString:@"+"];
NSString *urlString = [NSString stringWithFormat:@"%@", query];
// remember to change the view controller class in storyboard
MyWebViewController *webViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"WebView"];
// urlString is a public property on MyWebViewController
webViewController.urlString = urlString;
[self presentViewController:webViewController animated:YES completion:nil];
}
- (IBAction)SearchButton:(id)sender {
NSString *query = [maintext.text stringByReplacingOccurrencesOfString:@" " withString:@"+"];
NSString *urlString = [NSString stringWithFormat:@"http://www.google.com/search?q=%@", query];
// remember to change the view controller class in storyboard
MyWebViewController *webViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"WebView"];
// urlString is a public property on MyWebViewController
webViewController.urlString = urlString;
[self presentViewController:webViewController animated:YES completion:nil];
}
我的Webview控制器：
#import "MyWebViewController.h"
#import "ViewController.h"
#import <Social/Social.h>
#import "SIAlertView.h"
#import "TTAlertView.h"
#import "ETActivityIndicatorView.h"
@implementation MyWebViewController {
}
@synthesize searchField;
@synthesize webView;
ETActivityIndicatorView * etActivity;
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
NSURL *url = [NSURL URLWithString:self.urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[self.webView loadRequest:request];
}
-(void)webView:(UIWebView *)webBlog didFailLoadWithError:(NSError *)error{
if ([error code] != -999) {
NSLog(@"Could not load the dumb webPage");
//show error alert, etc.
TTAlertView *alert = [[TTAlertView alloc] initWithTitle:@"Internet Error"
message:@"Searched cannot open the page because your iPhone is not connected to the internet."
delegate:self
cancelButtonTitle:@"Dismiss"
otherButtonTitles:nil];
[alert show];
[etActivity setHidden:YES];
}else{
NSLog(@"Could not load the dumb web page...just might blame user!");
}
}
//Called whenever the view starts loading something
- (void)webViewDidStartLoad:(UIWebView *)webView {
[etActivity startAnimating];
[etActivity setHidden:NO];
}
//Called whenever the view finished loading something
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[etActivity stopAnimating];
[etActivity setHidden:YES];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[webView setDelegate:self];
self.searchField.backgroundColor = [UIColor colorWithRed:255.0/255 green:255.0/255 blue:255.0/255 alpha:1.0f];
self.searchField.layer.cornerRadius = 3.0f;
self.searchField.placeholder = @"Search or enter address";
self.searchField.leftViewMode = UITextFieldViewModeAlways;
UIView* leftView1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 10, 10)];
self.searchField.leftView = leftView1;
//Setup handling of LEFT and RIGHT swipes
UISwipeGestureRecognizer *recognizer;
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
[[self view] addGestureRecognizer:recognizer];
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
[[self view] addGestureRecognizer:recognizer];
self.searchField.delegate = self;
//ETActivityIndicatorView
etActivity = [[ETActivityIndicatorView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 60.0f, 60.0f)];
etActivity.center=self.view.center;
//you can set your custom color for ETActivityIndicatorView
etActivity.color = [UIColor colorWithRed:13.0/255 green:136.0/255 blue:236.0/255 alpha:1.0f];
[self.view addSubview:etActivity];
}
-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {
if (recognizer.direction == UISwipeGestureRecognizerDirectionRight) {
NSLog(@"Swipe Right");
[webView goBack];
}
if (recognizer.direction == UISwipeGestureRecognizerDirectionLeft) {
NSLog(@"Swipe Left");
[webView goForward];
}
}
#pragma mark - RNGridMenuDelegate
- (void)gridMenu:(RNGridMenu *)gridMenu willDismissWithSelectedItem:(RNGridMenuItem *)item atIndex:(NSInteger)itemIndex {
if (itemIndex == 0) {
NSLog(@"Reload");
[self.webView reload];
}
if (itemIndex == 1) {
NSLog(@"Facebook");
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) //check if Facebook Account is linked
{
mySLComposerSheet = [[SLComposeViewController alloc] init]; //initiate the Social Controller
mySLComposerSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook]; //Tell him with what social plattform to use it, e.g. facebook or twitter
[mySLComposerSheet setInitialText:[NSString stringWithFormat:@""]]; //the message you want to post
[self presentViewController:mySLComposerSheet animated:YES completion:nil];
}
[mySLComposerSheet setCompletionHandler:^(SLComposeViewControllerResult result) {
switch (result) {
case SLComposeViewControllerResultCancelled:
break;
case SLComposeViewControllerResultDone:
break;
default:
break;
} //check if everything worked properly. Give out a message on the state.
}];
}
if (itemIndex == 2) {
if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter])
{
SLComposeViewController *tweetSheet = [SLComposeViewController
composeViewControllerForServiceType:SLServiceTypeTwitter];
[tweetSheet setInitialText:@""];
[self presentViewController:tweetSheet animated:YES completion:nil];
}
}
if (itemIndex == 3) {
NSLog(@"Home");
MyWebViewController *MainView = [self.storyboard instantiateViewControllerWithIdentifier:@"MainView"];
[self presentViewController:MainView animated:NO completion:nil];
}
}
- (void)showList {
NSInteger numberOfOptions = 4;
NSArray *options = @[
@"Reload",
@"Facebook",
@"Twitter",
@"Home",
];
RNGridMenu *av = [[RNGridMenu alloc] initWithTitles:[options subarrayWithRange:NSMakeRange(0, numberOfOptions)]];
av.delegate = self;
av.itemFont = [UIFont boldSystemFontOfSize:18];
av.itemSize = CGSizeMake(150, 55);
[av showInViewController:self center:CGPointMake(self.view.bounds.size.width/2.f, self.view.bounds.size.height/2.f)];
}
- (IBAction)onShowButton:(id)sender {
[self showList];
}
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