小编Ita*_*tor的帖子

我试图在我的iOS7应用程序中更改UINavigationBar的外观.我正在做以下事情:

- (void)viewDidLoad
{
    [super viewDidLoad];

    m_sNumberToCall = @"";

    UIBarButtonItem * btn = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"IconHome.png"] style:UIBarButtonItemStyleBordered target:self action:@selector(btHomeTouched:)];
    self.navigationItem.leftBarButtonItem = btn;

    self.navigationController.navigationBar.translucent = YES;


    [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"TVCNavBack.png"] forBarMetrics:UIBarMetricsDefault];

    NSShadow * shadow = [[NSShadow alloc] init];
    shadow.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8];
    shadow.shadowOffset = CGSizeMake(0, 1);
    [[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
                                                           [UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0],
                                                           NSForegroundColorAttributeName,
                                                           shadow,
                                                           NSShadowAttributeName,
                                                           [UIFont fontWithName:@"Helvetica-Bold" size:21.0],
                                                           NSFontAttributeName,
                                                           nil]];
}

但是,我第一次呈现UITableViewController它是标准的iOS7导航栏,然后我按回家再次呈现它,这是我的新面貌.

任何想法为什么它第一次不起作用？

我使用以下堆栈获得Crashlytics的崩溃日志:

Fatal Exception: java.lang.IllegalStateException: focus search returned a view that wasn't able to take focus!
   at android.widget.TextView.onKeyUp(TextView.java:6413)
   at android.view.KeyEvent.dispatch(KeyEvent.java:2712)
   at android.view.View.dispatchKeyEvent(View.java:9960)
   at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)
   at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)
   at android.widget.ScrollView.dispatchKeyEvent(ScrollView.java:387)
   at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)
   at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)
   at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1630)
   at com.android.internal.policy.DecorView.superDispatchKeyEvent(DecorView.java:406)
   at com.android.internal.policy.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1798)
   at android.app.Activity.dispatchKeyEvent(Activity.java:3024)
   at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:320)
   at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:4331)
   at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4302)
   at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853)
   at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3906)
   at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3872)
   at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3999)
   at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3880)
   at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4056)
   at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853)
   at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3906)
   at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3872)
   at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3880)
   at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3853)
   at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6247)
   at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6221)
   at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6182)
   at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:3651)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at …