Question

我正在关注Mario Zechner撰写的“开始Android 4游戏开发”一书。

如果您想通过阅读本书来看看开发的Android框架：

现在，在进一步深入本书并启动OpenGl之前，我决定通过尝试将Framework移植到Java版本来改进我的基础Java知识。

我认为编写一个使用Framework的游戏，并且在将这些GameClasses复制到我的Java版本时，它只会使用相同的框架和不同的接口实现。

因此，当我尝试在java中实现顶级接口时，我不得不遇到诸如以下问题： - 等于AssetsManager等等：

该部分解决了Android GameFramework的书：

________INTERFACE______

public interface FileIO {
  // Load assets from apk package
  InputStream readAsset(String fileName) throws IOException;

  // Load files from storage (SD)
  InputStream readFile(String fileName) throws IOException;
  OutputStream writeFile(String fileName) throws IOException;

}

_______ ANDROID IMPLEMENTATION _______

public class AndroidFileIO implements FileIO {

  Context context;
  AssetManager assets;
  String externalStoragePath;


  // Constructor
  public AndroidFileIO(Context context) {

    this.context = context;
    this.assets = context.getAssets();
    this.externalStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator;

  }

  @override
  public InputStream readAsset(String fileName) throws IOException {
    return assets.open(fileName);
  }

  @override
  public InputStream readFile(String fileName) throws IOException {
    return new FileInputStream(externalStoragePath + fileName);
  }


  @override
  public OutputStream writeFile(String fileName) throws IOException {
    return new FileOutputStream(externalStoragePath + fileName);
  }


}

我不知道如何在Java中做同样的事情，因为上面使用的AssetsManager也出现在框架的另一个Android实现中。

我过去常常用Java加载文件：

public void load(String filename){

  BufferedReader in = null;
  File file1 = new File("/Users/jesjjes/AndroidStudioProjects/MapWindowTest/app/src/main/assets/"+filename+".text");

  try {
    in = new BufferedReader(new InputStreamReader(new FileInputStream(file1)));

  } catch (IOException e) {
    // :( It's ok we have defaults
  } catch (NumberFormatException e) {
    // :/ It's ok, defaults save our day
  }
  finally {

    try {
      if (in != null)
      in.close();
    }
    catch (IOException e) {
    }
  }
}

你会如何解决？框架不是太复杂，你可以很好地猜测上面链接的GitHub Rep。

我不需要确切的代码解决方案，但您可以分享一些有关如何执行此操作的提示。

我应该简单地扩展我的界面吗？后来以某种方式使用顶级界面告诉游戏使用哪一个？所以调用方法如：game.getInput（）。getTouchedX（）知道他们是否需要调用Android GameFramework或JavaFrameworks输入x版本？：P

提前致谢

Answer 1

public class DesktopFileIO implements FileIO {

  private final File externalStoragePath;
  private final File assetPath;


  // Constructor
  public DesktopFileIO(String externalStoragePath, String assetPath) {
    this(new File(externalStoragePath), new File(assetPath));
  }

  // Constructor
  public DesktopFileIO(File externalStoragePath, File assetPath) {
    super();
    this.externalStoragePath = externalStoragePath;
    this.assetPath = assetPath;
  }

  @override
  public InputStream readAsset(String fileName) throws IOException {
    return new FileInputStream( new File(assetPath, fileName) );
  }

  @override
  public InputStream readFile(String fileName) throws IOException {
    return new FileInputStream( new File(externalStoragePath, fileName) );
  }

  @override
  public OutputStream writeFile(String fileName) throws IOException {
    return new FileOutputStream( new File( externalStoragePath, fileName ) );
  }


}

将Android输入移植到Java桌面应用程序

1 个答案: