应用启动白屏问题

iOS widget方式集成：
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:NO];
// 如果路径中包含中文，或Xcode工程的targets名为中文则需要对路径进行编码
//NSString pWWWPath2 = (NSString )CFURLCreateStringByAddingPercentEscapes( kCFAllocatorDefault, (CFStringRef)pTempString, NULL, NULL, kCFStringEncodingUTF8 );
if ([[PDRCore Instance] respondsToSelector:@selector(startAsAppClient)]) {
[[PDRCore Instance] performSelector:@selector(startAsAppClient)];
}**

// 设置5+SDK运行的View  
[[PDRCore Instance] setContainerView:_containerView];  

// 传入参数可以在页面中通过plus.runtime.arguments参数获取  
NSString* pArgus = @"id=plus.runtime.arguments";  
// 启动该应用  
pAppHandle = [[[PDRCore Instance] appManager] openAppAtLocation:pWWWPath withIndexPath:@"html/index.html" withArgs:pArgus withDelegate:nil];  

if ([[PDRCore Instance] respondsToSelector:@selector(startAsAppClient)]) {
[[PDRCore Instance] performSelector:@selector(startAsAppClient)];
}**这句代码是很古老的例子程序里的，一直没换，加上他会导致横屏h5布局错乱，不加他会导致白屏。求解答