Question

我刚刚发现了非常棒的RoboVM，并想尝试一下。现在，作为第一步，我想要的只是尝试＆＃34; Get started＆＃34;上的两个样本。页。不幸的是，我已经被困在这里了。

我尝试了命令行示例，而不是eclipse插件示例（我不使用eclipse）。

HelloWorld 示例完美无缺。但我遇到了 IOSDemo 示例的问题。它与javac编译良好，似乎由RoboVM正确处理。问题是在iPhone模拟器启动后，会将以下内容写入终端：

2014-06-01 07:14:25.820 IOSDemo[324:70b] Application windows are expected to have a root view controller at the end of application launch

并且模拟器中没有显示任何内容（空白屏幕）。

这是完整的输出以及我在终端中写的内容：

Xxxs-Mac:IOSDemo xxx$ javac -cp ../../../robovm-0.0.13/lib/robovm-rt.jar:../../../robovm-0.0.13/lib/robovm-objc.jar:../../../robovm-0.0.13/lib/robovm-cocoatouch.jar -d classes/ IOSDemo.java
Xxxs-Mac:IOSDemo xxx$ ../../../robovm-0.0.13/bin/robovm -verbose -arch x86 -os ios -cp ../../../robovm-0.0.13/lib/robovm-objc.jar:../../../robovm-0.0.13/lib/robovm-cocoatouch.jar:classes/ -run IOSDemo
Compiling IOSDemo (ios x86)
Compiling IOSDemo$1 (ios x86)
Linking 2009 classes
Building executable /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -o /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo -g -arch i386 -Wl,-filelist,/var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/objects -L "/Volumes/My Disk/robovm/robovm-0.0.13/lib/vm/ios/x86" -ObjC -exported_symbols_list /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/exported_symbols -Wl,-no_implicit_dylibs -Wl,-dead_strip -mios-simulator-version-min=5.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk -lrobovm-bc -force_load "/Volumes/My Disk/robovm/robovm-0.0.13/lib/vm/ios/x86/librobovm-rt.a" -lrobovm-debug -lrobovm-core -lgc -lpthread -ldl -lm -liconv -lsqlite3 -framework Foundation -framework UIKit
Creating stripped archive file /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app/lib/boot/robovm-rt.jar
Creating stripped archive file /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app/lib/robovm-objc.jar
Creating stripped archive file /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app/lib/robovm-cocoatouch.jar
Creating stripped archive file /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app/lib/classes2.jar
Installing Info.plist to /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app
xcrun dsymutil -o /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app.dSYM /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app/IOSDemo
warning: no debug symbols in executable (-arch i386)
"/Volumes/My Disk/robovm/robovm-0.0.13/bin/ios-sim" launch /var/folders/0y/k5k7wl3510d_7p8g6k9mjgc80000gn/T/robovm1960244380699928960.tmp/IOSDemo.app --timeout 90 --unbuffered --family iphone --retina --tall --args -rvm:log=warn
2014-06-01 07:14:25.820 IOSDemo[324:70b] Application windows are expected to have a root view controller at the end of application launch

据我所知，除了iOS模拟器的错误（以及关于调试符号的行）之外，没有任何错误或警告。

我用：
- Mac OSX 10.9
- RoboVM 0.0.13
- Javac 1.7.0_60（也试过1.8.0_05）
- XCode 5.1.1（5B1008）
- （模拟器：iOS 7.1（11D167））

我之前从未使用过Mac，之前从未使用过XCode，也不知道Objective-C，所以我不知道如何解决它。谷歌搜索错误似乎表明我需要在某处添加一行代码，但我还不确定如何将其转换为RoboVM，因为这是从网站复制/粘贴的示例代码，我猜它应该开箱即用，没有任何修改（对吧？）。所以别的东西可能是错的。希望你们中的一些人能看出出了什么问题。任何帮助，将不胜感激。 Thanx：）

编辑：它可以在eclipse中运行，但仍然不能从命令行运行。我在上面提到的错误也显示在eclipse中（见下图），但由于它无论如何都有效，因此该错误可能不是问题的原因。当我从命令行执行此操作时，iOS模拟器可能以某种方式错误地启动了？

Answer 1

我在Eclipse中记录了相同的错误消息，但模拟器正确启动并且似乎无论如何都能正常工作。

Answer 2

我们在robovm网站上的示例是robovm可以做什么的非常基本的演示，而不是最佳实践。

这样的事情可能有点“更好”。（未经测试）：

主要应用程序：

public class MainApplication extends UIApplicationDelegateAdapter {

UIViewController myViewController;


@Override
public boolean didFinishLaunching(UIApplication application,
                                  NSDictionary launchOptions) {

    if (myViewController == null) {
        myViewController = new MyViewController();
    }

    UINavigationController navigationController = new UINavigationController();
    navigationController.pushViewController(myViewController, true);

    CGRect bounds = new CGRect(0, 0, UIScreen.getMainScreen().getCurrentMode().getSize().width(),
            UIScreen.getMainScreen().getCurrentMode().getSize().height());


    UIWindow window = new UIWindow(bounds);
    window.setBackgroundColor(UIColor.colorWhite());
    window.makeKeyAndVisible();

    /* show everything */
    window.setRootViewController(navigationController);
    window.makeKeyAndVisible();

    return true;
}


/* Main entry point */
public static void main(String[] args) {
    NSAutoreleasePool pool = new NSAutoreleasePool();
    UIApplication.main(args, null, MainApplication.class);
    pool.close();
}
}

<强> MyNavigationController：

public class MyViewController extends UIViewController {


@Override
public void viewDidLoad() {

    final UIButton button = UIButton.create(UIButtonType.RoundedRect);
    button.setFrame(new CGRect(115.0f, 121.0f, 91.0f, 37.0f));
    button.setTitle("Click me!", UIControlState.Normal);

    button.addOnTouchUpInsideListener(new UIControl.OnTouchUpInsideListener() {
        @Override
        public void onTouchUpInside(UIControl control, UIEvent event) {
            button.setTitle("Click #" + (++clickCount), UIControlState.Normal);
        }
    });
   getView().addSubview(button );
}
}

RoboVM示例代码：应用程序窗口应在应用程序启动结束时具有根视图控制器

2 个答案: