Question

我已经测试了Xcode中提供的模板来制作FinderSync扩展。除了两件事之外，一切都很顺利：

a）当监视文件夹时，系统永远不会调用requestBadgeIdentifierForURL方法，因此不会设置标记。这里出了什么问题？我是正确的，假设我应该调用这个方法，例如在Finder中移动或滚动受监控的文件夹？顺便说一句，在这种情况下，方法beginObservingDirectoryAtURL和endObservingDirectoryAtURL被正确调用。

#import "FinderSync.h"

@interface FinderSync ()

@property NSURL *myFolderURL;

@end

@implementation FinderSync

- (instancetype)init {
    self = [super init];

    NSLog(@"%s launched from %@ ; compiled at %s", __PRETTY_FUNCTION__, [[NSBundle mainBundle] bundlePath], __TIME__);

    // Set up the directory we are syncing.
    self.myFolderURL = [NSURL fileURLWithPath:@"/Users/hmaass/Downloads"];
    [FIFinderSyncController defaultController].directoryURLs = [NSSet setWithObject:self.myFolderURL];

    // Set up images for our badge identifiers. For demonstration purposes, this uses off-the-shelf images.
    [[FIFinderSyncController defaultController] setBadgeImage:[NSImage imageNamed: NSImageNameColorPanel] label:@"Status One" forBadgeIdentifier:@"One"];
    [[FIFinderSyncController defaultController] setBadgeImage:[NSImage imageNamed: NSImageNameCaution] label:@"Status Two" forBadgeIdentifier:@"Two"];

    return self;
}

#pragma mark - Primary Finder Sync protocol methods

- (void)beginObservingDirectoryAtURL:(NSURL *)url {
    // The user is now seeing the container's contents.
    // If they see it in more than one view at a time, we're only told once.
    NSLog(@"beginObservingDirectoryAtURL:%@", url.filePathURL);
}


- (void)endObservingDirectoryAtURL:(NSURL *)url {
    // The user is no longer seeing the container's contents.
    NSLog(@"endObservingDirectoryAtURL:%@", url.filePathURL);
}

- (void)requestBadgeIdentifierForURL:(NSURL *)url {
    NSLog(@"requestBadgeIdentifierForURL:%@", url.filePathURL);

    // For demonstration purposes, this picks one of our two badges, or no badge at all, based on the filename.
    NSInteger whichBadge = [url.filePathURL hash] % 3;
    NSString* badgeIdentifier = @[@"", @"One", @"Two"][whichBadge];
    [[FIFinderSyncController defaultController] setBadgeIdentifier:badgeIdentifier forURL:url];
}

#pragma mark - Menu and toolbar item support

- (NSString *)toolbarItemName {
    return @"testfifi";
}

- (NSString *)toolbarItemToolTip {
    return @"testfifi: Click the toolbar item for a menu.";
}

- (NSImage *)toolbarItemImage {
    return [NSImage imageNamed:NSImageNameCaution];
}

- (NSMenu *)menuForMenuKind:(FIMenuKind)whichMenu {
    // Produce a menu for the extension.
    NSMenu *menu = [[NSMenu alloc] initWithTitle:@""];
    [menu addItemWithTitle:@"Example Menu Item" action:@selector(sampleAction:) keyEquivalent:@""];

    return menu;
}

- (IBAction)sampleAction:(id)sender {
    NSURL* target = [[FIFinderSyncController defaultController] targetedURL];
    NSArray* items = [[FIFinderSyncController defaultController] selectedItemURLs];

    NSLog(@"sampleAction: menu item: %@, target = %@, items = ", [sender title], [target filePathURL]);
    [items enumerateObjectsUsingBlock: ^(id obj, NSUInteger idx, BOOL *stop) {
        NSLog(@"    %@", [obj filePathURL]);
    }];
}

@end

b）运行上面的模板时，我在Xcode的日志控制台中收到以下消息：

2015-08-25 15：33：00.300 testfifi [855：8134]无法连接（colorGridView）出口（NSApplication）到（NSColorPickerGridView）：缺少setter或实例变量 2015-08-25 15：33：00.300 testfifi [855：8134]无法连接（查看）从（NSApplication）到（NSColorPickerGridView）的出口：缺少setter 或实例变量2015-08-25 15：33：00.321 testfifi [855：8134] - 从/Users/hmaass/Library/Developer/Xcode/DerivedData/testtest-egudnxkifjxirpbrjkohnatmjuro/Build/Products/Debug/testtest.app/Contents/PlugIns/testfifi.appex启动[FinderSync init] ;编译于20:38:18

有人可以帮我摆脱这条消息吗？

谢谢！

Answer 1

我已经对您的问题发表了评论，但我认为我应该发布更完整的答案。

听起来你遇到的问题是另一个Finder Sync扩展程序是＆＃34;贪婪地＆＃34;观察所有文件夹，很可能是Dropbox Finder集成。尝试禁用所有其他Finder Sync扩展（在系统偏好设置 - ＆gt;扩展程序 - ＆gt; Finder下）并重新运行测试。

如果这样可以解决问题，则问题是Dropbox（或其他应用）已经为您尝试监控的文件夹调用了beginObservingDirectoryAtURL。遗憾的是，Apple的API缺乏，当存在冲突的扩展时，没有智能逻辑来监控文件夹。目前，无论哪个Finder Sync扩展程序首先启动都将赢得＆＃34;。

Dropbox贪婪地监视用户主目录下的所有文件夹。我已经写过Apple和Dropbox来解决这个问题，但没有听到任何回应。目前，我实施的（丑陋）解决方法是关闭已知的＆＃34;贪心＆＃34;扩展，启动我自己的扩展，然后重新启动贪婪的扩展。

Answer 2

以下是禁用“贪婪”Finder Sync扩展的解决方法示例代码。没什么好看的，但它确实有效。

（将此作为单独的答案添加，因为它实际上只是一种解决方法，并不一定是“正确的”答案）。

public static void main(String[] args) throws Exception {
    String[] greedyFSProcessNames =
        new String[] { "com.getdropbox.dropbox.garcon" };

    List<String> disabledGreedyFSProcessNames = new ArrayList<>();

    for (String greedyFSProcessName : greedyFSProcessNames) {
        if (!_isFSProcessRunning(greedyFSProcessName)) {
            continue;
        }

        _enableFSProcess(greedyFSProcessName, false);

        disabledGreedyFSProcessNames.add(greedyFSProcessName);
    }

    _enableFSProcess("com.dejuknow.myfindersync", true);

    for (String disabledGreedyFSProcessName :
        disabledGreedyFSProcessNames) {

        _enableFSProcess(disabledGreedyFSProcessName, true);
    }
}

private static boolean _isFSProcessRunning(String processName)
    throws Exception {

    BufferedReader bufferedReader = null;

    try {
        Process process = Runtime.getRuntime().exec(
            "pluginkit -m -i" + processName);

        bufferedReader = new BufferedReader(
            new InputStreamReader(process.getInputStream()));

        String line = null;

        while ((line = bufferedReader.readLine()) != null) {
            if (line.startsWith("+")) {
                return true;
            }
            else {
                return false;
            }
        }
    }
    finally {
        if (bufferedReader != null) {
            bufferedReader.close();
        }
    }

    return false;
}

private static void _enableFSProcess(String processName, boolean enable)
    throws Exception {

    String electionArgument = null;

    if (enable) {
        electionArgument = "use";
    }
    else {
        electionArgument = "ignore";
    }

    String[] arguments = new String[] {
        "pluginkit", "-e", electionArgument, "-i", processName
    };

    while (_isFSProcessRunning(processName) != enable) {
        Process process = Runtime.getRuntime().exec(arguments);

        process.waitFor();

        Thread.sleep(100);
    }
}

Answer 3

我知道Dropbox使用的文件夹：〜/ Dropbox，〜/ Documents和〜/ Desktop。我也有一个FinderSync应用程序，我可以在我的所有文件夹上显示徽章，除了那些。幸运的是，上下文菜单似乎没有任何冲突，显示了两个扩展程序的菜单项。

FinderSync扩展 - 从不调用requestBadgeIdentifierForURL

3 个答案: