寫在前面

我們應(yīng)該都有用過這個功能，你的朋友微信給你分享了一個淘寶里面的商品鏈接，然后當(dāng)你復(fù)制這個鏈接打開淘寶APP的時候，就會彈出一個彈窗，像這樣：

example.PNG

這個功能想必大家都挺熟悉，受這個啟發(fā)我們產(chǎn)品也想在我們APP上添加這樣一個功能，與這個不一樣的是，當(dāng)我們復(fù)制一段網(wǎng)址的時候打開我們的APP會彈出框填一些信息后上傳到我們的“資源庫”。大體功能就這樣，所以記錄一下實(shí)現(xiàn)的過程。

一、彈窗視圖功能

.h中：兩個信號一個是確定信號一個是取消信號

兩個方法，一個顯示一個隱藏方法

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@property?(nonatomic,?strong)?RACSubject?*uploadSureSignal;//確定上傳信號@property?(nonatomic,?strong)?RACSubject?*hideSucSignal;//隱藏-?(void)show;-?(void)hide;

.m中：主要是兩個textview，還有涉及到在keywindow上，IQKeyboard的一些操作

123	@property?(nonatomic,?assign)?CGFloat?keyboardHeight;//鍵盤高度@property?(nonatomic,?strong)?CustomUITextView?*nameTV;@property?(nonatomic,?strong)?CustomUITextView?*desTV;

因?yàn)榘l(fā)現(xiàn)IQKeyboard在這個彈出界面有問題，所以在顯示這個界面的時候，將IQKeyboard禁用取之使用系統(tǒng)的keyboard監(jiān)聽方法

在(void)show方法中：

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-(void)show?{//鍵盤通知????NSNotificationCenter?*defaultCenter?=?[NSNotificationCenter?defaultCenter];?????????[defaultCenter?addObserver:self?selector:@selector(keyboardWillShowOrHide:)?name:UIKeyboardWillShowNotification?object:nil];?????????[defaultCenter?addObserver:self?selector:@selector(keyboardWillShowOrHide:)?name:UIKeyboardWillHideNotification?object:nil];}

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//監(jiān)聽方法-?(void)keyboardWillShowOrHide:(NSNotification?*)notification?{????//獲取通知名????NSString?*notificationName?=?notification.name;????//獲取通知內(nèi)容????NSDictionary?*keyboardInfo?=?notification.userInfo;????//鍵盤彈出時，讓畫面整體稍稍上移，并伴隨動畫????//鍵盤回收時反之????CGRect?keyboardFrame?=?[notification.userInfo[UIKeyboardFrameEndUserInfoKey]?CGRectValue];????CGFloat?height?=?keyboardFrame.size.height;????self.keyboardHeight?=?height;????//動畫結(jié)束后self.view的frame值????CGRect?selfViewFrame?=?self.bgView.frame;????//通過通知名字判斷彈出還是回收????if?([notificationName?isEqualToString:UIKeyboardWillShowNotification])?{????????selfViewFrame.origin.y?=?SCREEN_HEIGHT?-?PANELHEIGHT?-?height;????}?else?{????????selfViewFrame.origin.y?=?SCREEN_HEIGHT?-?PANELHEIGHT;????}?????????//取出動畫時長????NSTimeInterval?duration?=?[keyboardInfo[UIKeyboardAnimationDurationUserInfoKey]?doubleValue];?????????//使用動畫更改self.view.frame????[UIView?animateWithDuration:duration?animations:^{????????//這里填入一些view的最終狀態(tài)屬性設(shè)置，即會自動產(chǎn)生過渡動畫????????self.bgView.frame?=?selfViewFrame;????}];?????}

同時在show方法中顯示keyWindow，進(jìn)而改變界面的frame進(jìn)行顯示

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-?(void)show?{UIWindow?*keyWindow?=?[UIApplication?sharedApplication].keyWindow;????[keyWindow?addSubview:self];????CGRect?frame?=?self.bgView.frame;????if?(frame.origin.y?==?SCREEN_HEIGHT)?{????????frame.origin.y?=?SCREEN_HEIGHT?-?PANELHEIGHT;????????[UIView?animateWithDuration:0.4?animations:^{????????????self.bgView.frame?=?frame;????????}];????}

hide方法這里要考慮到鍵盤彈出后將self.bgView向上提高后frame的變化。

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CGRect?selfFrame?=?self.bgView.frame;????if?(selfFrame.origin.y?==?SCREEN_HEIGHT?-?PANELHEIGHT?||?selfFrame.origin.y?==?SCREEN_HEIGHT?-?PANELHEIGHT?-?self.keyboardHeight)?{????????[self?resignFirstResponder];????????selfFrame.origin.y?=?SCREEN_HEIGHT;????????[UIView?animateWithDuration:0.4?animations:^{????????????self.bgView.frame?=?selfFrame;????????}?completion:^(BOOL?finished)?{????????????[IQKeyboardManager?sharedManager].enable?=?YES;????????????[[NSNotificationCenter?defaultCenter]?removeObserver:self];//????????????[self.hideSucSignal?sendNext:nil];????????????[self?removeFromSuperview];????????}];????}

delegate中的操作

這里首先要弄懂APPdelegate中的這幾個代理方法的意思：

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//App已經(jīng)啟動-?(BOOL)application:(UIApplication?*)application?didFinishLaunchingWithOptions:(NSDictionary?*)launchOptions?{????//?Override?point?for?customization?after?application?launch.????return?YES;}//App掛起狀態(tài)-?(void)applicationWillResignActive:(UIApplication?*)application?{????//?Sent?when?the?application?is?about?to?move?from?active?to?inactive?state.?This?can?occur?for?certain?types?of?temporary?interruptions?(such?as?an?incoming?phone?call?or?SMS?message)?or?when?the?user?quits?the?application?and?it?begins?the?transition?to?the?background?state.????//?Use?this?method?to?pause?ongoing?tasks,?disable?timers,?and?invalidate?graphics?rendering?callbacks.?Games?should?use?this?method?to?pause?the?game.}//APP進(jìn)入后臺-?(void)applicationDidEnterBackground:(UIApplication?*)application?{????//?Use?this?method?to?release?shared?resources,?save?user?data,?invalidate?timers,?and?store?enough?application?state?information?to?restore?your?application?to?its?current?state?in?case?it?is?terminated?later.????//?If?your?application?supports?background?execution,?this?method?is?called?instead?of?applicationWillTerminate:?when?the?user?quits.}//APP將重新回到前臺-?(void)applicationWillEnterForeground:(UIApplication?*)application?{????//?Called?as?part?of?the?transition?from?the?background?to?the?active?state;?here?you?can?undo?many?of?the?changes?made?on?entering?the?background.}//APP進(jìn)入活躍狀態(tài)-?(void)applicationDidBecomeActive:(UIApplication?*)application?{????//?Restart?any?tasks?that?were?paused?(or?not?yet?started)?while?the?application?was?inactive.?If?the?application?was?previously?in?the?background,?optionally?refresh?the?user?interface.}//系統(tǒng)時間發(fā)生改變時執(zhí)行-?(void)applicationWillTerminate:(UIApplication?*)application?{????//?Called?when?the?application?is?about?to?terminate.?Save?data?if?appropriate.?See?also?applicationDidEnterBackground:.}

在上面的這些代理方法中，我們需要用到的是 ?applicationDidBecomeActive方法。在這個方法中我們?nèi)z查系統(tǒng)的粘貼板UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];

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if?(pasteboard.string)?{????????????NSLog(@"string:%@",?pasteboard.string);????????????NSString?*urlStr?=?pasteboard.string;????????????if?([urlStr?hasPrefix:@"https://"]?||?[urlStr?hasPrefix:@"http://"])?{//如果粘貼板中的字符串包含https或http字段，我們?nèi)z查當(dāng)前的控制器?如果當(dāng)前的控制器是我們彈出做操作的控制器的話?isPopVC?=?NO;????????????????BOOL?isPopVC?=?NO;????????????????UIViewController?*?Rootvc?=?self.window.rootViewController;????????????????if?([Rootvc?isKindOfClass:[UINavigationController?class]])?{????????????????????UINavigationController?*?nav?=?(UINavigationController?*)Rootvc;????????????????????UIViewController?*?v?=?[nav.viewControllers?lastObject];????????????????????if?([v?isKindOfClass:[UploadResCofingVC?class]])?{????????????????????????isPopVC?=?YES;????????????????????}????????????????}????????????????//如果popView?==?nil?并且isPopVC?==?NO?彈出popView彈窗視圖?進(jìn)行操作????????????????if?(!self.popView?&&?!isPopVC)?{????????????????????UploadResourcesPopupView?*popView?=?[UploadResourcesPopupView?new];????????????????????[popView?show];????????????????????self.popView?=?popView;????????????????????[self.popView.hideSucSignal?subscribeNext:^(id?x)?{????????????????????????@strongify(self);????????????????????????self.popView?=?nil;????????????????????}];????????????????}????????????}????????}????}

總結(jié)

以上大體就是實(shí)現(xiàn)這個功能的基本思路，細(xì)節(jié)方面因項(xiàng)目而異了，比如我們需要判斷當(dāng)前用戶的角色，當(dāng)前用戶是否登錄，對彈窗視圖后續(xù)的一些操作。當(dāng)然并不完美，歡迎批評指正。

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