counting the number of .plist files in xcode

In xcode, I have many .plist开发者_如何学编程 files called : ImageData1.plist, ImageData2.plist ... etc

how can I get the number of .plist files which start with the name "ImageData" ?

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A quick and dirty solution:

int count = 0;

for (int i = 1; i<100; i++) {
    NSString * format = @"ImageData%u";
    NSString * file = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:format,i] ofType:@"plist"];
    BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:file];

    if (fileExists) {
        count ++;
    } else {
        break;
    }
}

NSLog(@"-----> Number of files = %u", count);

This method works if you don't have missing files in the sequence (e.g. ImageData1.plist, ImageData2.plist, ImageData4.plist...)