XCode iPhone应用程序会立即运行并崩溃

Question

xcode（最新）。运行应用程序时，它立即关闭。该应用程序在模拟器上加载，因此显示图片，但是屏幕变为白色，因此应用程序堆放。除了唯一的标签和绿色背景。

这就是刚开始时的外观：http：//tinypic.com/r/2dvu7io/8

第二次：http：//tinypic.com/r/98wp5u/8

#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="7702" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
    <dependencies>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7701"/>
    </dependencies>
    <objects>
        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
        <view contentMode="scaleToFill" id="iN0-l3-epB">
            <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
            <subviews>
                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Hello World!" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="BkG-X7-MYE">
                    <rect key="frame" x="115" y="289" width="133" height="41"/>
                    <fontDescription key="fontDescription" type="system" pointSize="25"/>
                    <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                    <nil key="highlightedColor"/>
                </label>
                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Label" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="I9t-Ne-eCZ">
                    <rect key="frame" x="146" y="216" width="42" height="21"/>
                    <fontDescription key="fontDescription" type="system" pointSize="17"/>
                    <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                    <nil key="highlightedColor"/>
                </label>
            </subviews>
            <color key="backgroundColor" red="0.82914447010375036" green="1" blue="0.67541074406557622" alpha="0.70999999999999996" colorSpace="calibratedRGB"/>
            <nil key="simulatedStatusBarMetrics"/>
            <simulatedScreenMetrics key="simulatedDestinationMetrics" type="retina47"/>
            <point key="canvasLocation" x="517.5" y="438.5"/>
        </view>
    </objects>
</document>

Answer 1

您的项目太小，甚至无法尝试装甲中的所有调试工具。如果我是您，我将从以下步骤开始以消除根本原因并调查问题。

a）尝试使用与当前项目相同的步骤创建一个新的示例项目，然后尝试运行它。如果一切顺利，那么XCode中的一些插件可能会出现一些故障，这可能导致损坏的文件。b）如果问题持续存在，请尝试在各种方法上使用Break Point，即

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
- (void)viewDidLoad
- (void)viewWillAppear:(BOOL)animated
- (void)viewDidAppear:(BOOL)animated

很可能这些步骤应该揭示您到达失速屏幕之前到达哪个阶段。