好吧，我已经为 Eclipse 写了一个插件(好吧，它主要是从 ADT 复制代码)。它是一个新的项目向导，其功能与 ADT 的新项目向导基本相同，只是它复制了一个库，将其添加到构建路径，并复制了一些其他文件。这一切都很好。
该库称为 AltBridge，它是从 App Inventor 的 Java Bridge 库构建的。这个库本质上改变了你编写 Activity 的方式，我想添加一个菜单选项来创建一个新的表单(这是一个修改过的 Activity )。
这就是 Eclipse 令人烦恼的地方。如果我按 F11，它就能正常工作。它创建新文件没问题。但是，当我导出插件并尝试时，它不起作用。
这是我目前所拥有的:
public class NewFormMenuSelection extends AbstractHandler implements IHandler {
private static final String PARAM_PACKAGE = "PACKAGE";
private static final String PARAM_ACTIVITY = "ACTIVITY_NAME";
private static final String PARAM_IMPORT_RESOURCE_CLASS = "IMPORT_RESOURCE_CLASS";
private Map<String, Object> java_activity_parameters = new HashMap<String, Object>();
public Object execute(ExecutionEvent event) throws ExecutionException {
IStructuredSelection selection = (IStructuredSelection) HandlerUtil
.getActiveMenuSelection(event);
String directory = "";
Object firstElement = selection.getFirstElement();
if (firstElement instanceof IPackageFragment) {
InputDialog dialog = new InputDialog(HandlerUtil.getActiveShell(event), "Name of the new Form to create?", "Please enter the name of the new form to create.", "NewForm", null);
if ( dialog.open()==IStatus.OK ) {
String activityName = dialog.getValue();
String packageName = ((IPackageFragment) firstElement).getElementName();
if (activityName != null) {
String resourcePackageClass = null;
// An activity name can be of the form ".package.Class", ".Class" or FQDN.
// The initial dot is ignored, as it is always added later in the templates.
int lastDotIndex = activityName.lastIndexOf('.');
if (lastDotIndex != -1) {
// Resource class
if (lastDotIndex > 0) {
resourcePackageClass = packageName + "." + AdtConstants.FN_RESOURCE_BASE; //$NON-NLS-1$
}
// Package name
if (activityName.startsWith(".")) { //$NON-NLS-1$
packageName += activityName.substring(0, lastDotIndex);
} else {
packageName = activityName.substring(0, lastDotIndex);
}
// Activity Class name
activityName = activityName.substring(lastDotIndex + 1);
}
java_activity_parameters.put(PARAM_IMPORT_RESOURCE_CLASS, "");
java_activity_parameters.put(PARAM_ACTIVITY, activityName);
java_activity_parameters.put(PARAM_PACKAGE, packageName);
if (resourcePackageClass != null) {
String importResourceClass = "\nimport " + resourcePackageClass + ";"; //$NON-NLS-1$ // $NON-NLS-2$
java_activity_parameters.put(PARAM_IMPORT_RESOURCE_CLASS, importResourceClass);
}
if (activityName != null) {
// create the main activity Java file
// get the path of the package
IPath path = ((IPackageFragment) firstElement).getPath();
String pkgpath = path.toString();
// Get the project name
String activityJava = activityName + AdtConstants.DOT_JAVA;
String projname = ((IPackageFragment) firstElement).getParent().getJavaProject().getElementName();
// Get the project
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projname);
IFolder pkgFolder = project.getFolder(pkgpath);
IFile file = pkgFolder.getFile(activityJava);
if (!file.exists()) {
try {
copyFile("java_file.template", file, java_activity_parameters, false);
} catch (CoreException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
}
return null;
}
private void copyFile(String resourceFilename, IFile destFile,
Map<String, Object> parameters, boolean reformat)
throws CoreException, IOException {
// Read existing file.
String template = AltBridge.readEmbeddedTextFile(
"templates/" + resourceFilename);
// Replace all keyword parameters
template = replaceParameters(template, parameters);
if (reformat) {
// Guess the formatting style based on the file location
XmlFormatStyle style = XmlFormatStyle.getForFile(destFile.getProjectRelativePath());
if (style != null) {
template = reformat(style, template);
}
}
// Save in the project as UTF-8
InputStream stream = new ByteArrayInputStream(template.getBytes("UTF-8")); //$NON-NLS-1$
destFile.create(stream, true /* force */, null);
}
private String replaceParameters(String str, Map<String, Object> parameters) {
if (parameters == null) {
AltBridge.log(IStatus.ERROR,
"NPW replace parameters: null parameter map. String: '%s'", str); //$NON-NLS-1$
return str;
} else if (str == null) {
AltBridge.log(IStatus.ERROR,
"NPW replace parameters: null template string"); //$NON-NLS-1$
return str;
}
for (Entry<String, Object> entry : parameters.entrySet()) {
if (entry != null && entry.getValue() instanceof String) {
Object value = entry.getValue();
if (value == null) {
AltBridge.log(IStatus.ERROR,
"NPW replace parameters: null value for key '%s' in template '%s'", //$NON-NLS-1$
entry.getKey(),
str);
} else {
str = str.replaceAll(entry.getKey(), (String) value);
}
}
}
return str;
}
private String reformat(XmlFormatStyle style, String contents) {
if (AdtPrefs.getPrefs().getUseCustomXmlFormatter()) {
XmlFormatPreferences formatPrefs = XmlFormatPreferences.create();
return XmlPrettyPrinter.prettyPrint(contents, formatPrefs, style,
null /*lineSeparator*/);
} else {
return contents;
}
}
我似乎遇到问题的部分是在它说//创建主要 Activity java 文件的地方。
为了在按 F11 键时让它正常工作，我不得不删除包的前两个条目(我知道我可能可以用更好的方法来做到这一点，但它确实有效)。否则，出于某种原因，它将项目名称添加到路径的开头(加倍)。如果保持这种方式，在测试环境之外导出和尝试时它将无法工作。它给出了一个错误，指出项目名称必须在路径中。因此，如果我删除删除该部分的部分，则在按 F11 时它不起作用，并且在构建环境之外，它不起作用，并且不会给出任何类型的错误。关于我可能做错了什么的任何线索？
这是复制文件代码(同样，这只是从 ADT 插件复制而来):
public static String readEmbeddedTextFile(String filepath) {
try {
InputStream is = readEmbeddedFileAsStream(filepath);
if (is != null) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line;
StringBuilder total = new StringBuilder(reader.readLine());
while ((line = reader.readLine()) != null) {
total.append('\n');
total.append(line);
}
return total.toString();
}
} catch (IOException e) {
// we'll just return null
AltBridge.log(e, "Failed to read text file '%s'", filepath); //$NON-NLS-1$
}
return null;
}
public static InputStream readEmbeddedFileAsStream(String filepath) {
// attempt to read an embedded file
try {
URL url = getEmbeddedFileUrl(AdtConstants.WS_SEP + filepath);
if (url != null) {
return url.openStream();
}
} catch (MalformedURLException e) {
// we'll just return null.
AltBridge.log(e, "Failed to read stream '%s'", filepath); //$NON-NLS-1$
} catch (IOException e) {
// we'll just return null;.
AltBridge.log(e, "Failed to read stream '%s'", filepath); //$NON-NLS-1$
}
return null;
}
public static URL getEmbeddedFileUrl(String filepath) {
Bundle bundle = null;
synchronized (AltBridge.class) {
if (plugin != null) {
bundle = plugin.getBundle();
} else {
AltBridge.log(IStatus.WARNING, "ADT Plugin is missing"); //$NON-NLS-1$
return null;
}
}
// attempt to get a file to one of the template.
String path = filepath;
if (!path.startsWith(AdtConstants.WS_SEP)) {
path = AdtConstants.WS_SEP + path;
}
URL url = bundle.getEntry(path);
if (url == null) {
AltBridge.log(IStatus.INFO, "Bundle file URL not found at path '%s'", path); //$NON-NLS-1$
}
return url;
}
好的，问题似乎出在 IProject 或 IFolder 上。例如，路径返回为“test/src/com/test”。然后，当我使用 pkgfolder.getFile 时，它会在路径前面添加另一个/test/(这是在 Eclipse 中按 F11 进行测试时)。
最佳答案
好吧，我让它变得比它需要的更复杂。这是我使用的有效代码。 (我仍然不明白为什么 Eclipse 的行为如此奇怪......为什么在使用 F11 进行测试时可以工作，但在部署插件时却不能？)。
这也只是//创建主要 Activity Java 文件的部分:
if (activityName != null) {
// create the main activity Java file
String activityJava = activityName + AdtConstants.DOT_JAVA;
// Get the path of the package
IPath path = ((IPackageFragment) firstElement).getPath();
String pkgpath = path.toString();
String projname = "";
// Remove the project name from the beginning of the path
String temp[] = pkgpath.split("/");
pkgpath = "";
for (int i = 1; i < temp.length; i++) {
if (i==1) {
pkgpath = "/";
projname = temp[i];
} else {
pkgpath = pkgpath + "/" + temp[i];
}
}
// Get the project
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projname);
IFile file = project.getFile(pkgpath+"/"+activityJava);
if (!file.exists()) {
try {
copyFile("java_file.template", file, java_activity_parameters);
} catch (CoreException e) {
AltBridge.log(e, "Couldn't copy the text file", pkgpath);
e.printStackTrace();
} catch (IOException e) {
AltBridge.log(e, "Couldn't copy the text file", pkgpath);
e.printStackTrace();
}
}
}
关于java - Eclipse 插件问题(复制文件)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8524849/