阻止iOS通话中状态栏在屏幕外推送Phonegap UIWebView

Question

我的问题是:每当iPhone用户正在通话,或者正在使用他或她的手机作为热点时,iOS 7状态栏会被放大,从而将我的Phonegap应用程序的UIWebView推离屏幕底部.放大的状态栏被称为"通话状态栏".见下图:

Stack Overflow答案我试图解决这个问题:

Iphone-如何在切换呼叫状态栏时调整视图大小？

In-Call状态栏如何影响UIViewController的视图大小？(以及如何正确处理)

此外,Phonegap似乎没有任何类型的事件通知我状态栏的更改.听取Phonegap"暂停"事件是没用的,因为1)它已知在iOS中有怪癖,2)它并没有真正涵盖热点案例.

我的Objective-C技能非常小,我只需要在进行必要的4个多小时的谷歌搜索,堆栈溢出,嚎叫等等后提出这样的问题......

Stack Overflow的神,让我觉得你的书呆子愤怒.

Answer 1

根据Jef的建议提出以下解决方案.你想要做的是以下几点:

• 观察本机didChangeStatusBarFrame代表
• 通过本机获取有关状态栏的大小信息 statusBarFrame
• 通过触发传递它的事件将信息公开给您的webview

我已经设置了一个Github仓库,其中包含您在此答案中找到的所有代码.

在AppDelegate中设置通知

// Appdelegate.m
- (void)application:(UIApplication *)application didChangeStatusBarFrame:(CGRect)oldStatusBarFrame
{
  NSMutableDictionary *statusBarChangeInfo = [[NSMutableDictionary alloc] init];
  [statusBarChangeInfo setObject:@"statusbarchange" 
                     forKey:@"frame"];

  [[NSNotificationCenter defaultCenter] postNotificationName:@"statusbarchange" 
                                        object:self 
                                        userInfo:statusBarChangeInfo];
 }

使statusBarChange选择器可用

// MainViewController.h
@protocol StatusBarChange <NSObject>
    -(void)onStatusbarChange:(NSNotification*)notification;
@end

设置监听器.这得到了origin和size字典从statusBarFrame每当它改变并沿此数据传递的WebView触发一个事件.

// MainViewController.m
- (void)onStatusbarChange:(NSNotification*)notification
{
    // Native code for
    NSMutableDictionary *eventInfo = [self getStatusBarInfo];
    [self notifiy:notification.name withInfo:eventInfo];
}

- (void)notifiy:(NSString*)event withInfo:(NSMutableDictionary*)info
{
    NSString *json = [self toJSON:info];
    NSString *cmd = [NSString stringWithFormat:@"cordova.fireWindowEvent('\%@\', %@)", event, json];
    [self.webView stringByEvaluatingJavaScriptFromString:cmd];
}

- (NSMutableDictionary *)getStatusBarInfo
{
    CGRect statusBarFrame = [[UIApplication sharedApplication] statusBarFrame];

    NSMutableDictionary *statusBarInfo = [[NSMutableDictionary alloc] init];
    NSMutableDictionary *size = [[NSMutableDictionary alloc] init];
    NSMutableDictionary *origin = [[NSMutableDictionary alloc] init];

    size[@"height"] = [NSNumber numberWithInteger:((int) statusBarFrame.size.height)];
    size[@"width"] = [NSNumber numberWithInteger:((int) statusBarFrame.size.width)];

    origin[@"x"] = [NSNumber numberWithInteger:((int) statusBarFrame.origin.x)];
    origin[@"y"] = [NSNumber numberWithInteger:((int) statusBarFrame.origin.y)];

    statusBarInfo[@"size"] = size;
    statusBarInfo[@"origin"] = origin;

    return statusBarInfo;
}

- (NSString *) toJSON:(NSDictionary *)dictionary {
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionary options:NSJSONWritingPrettyPrinted error:&error];
    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

所有这些都可以让你倾听window.statusbarchange事件,例如:

// www/js/index.js
window.addEventListener('statusbarchange', function(e){
  // Use e.size.height to adapt to the changing status bar      

}, false)