feat：参照研听的基础工程

packages/flutter_paid/ios/.gitignore

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+.idea/
+.vagrant/
+.sconsign.dblite
+.svn/
+
+.DS_Store
+*.swp
+profile
+
+DerivedData/
+build/
+GeneratedPluginRegistrant.h
+GeneratedPluginRegistrant.m
+
+.generated/
+
+*.pbxuser
+*.mode1v3
+*.mode2v3
+*.perspectivev3
+
+!default.pbxuser
+!default.mode1v3
+!default.mode2v3
+!default.perspectivev3
+
+xcuserdata
+
+*.moved-aside
+
+*.pyc
+*sync/
+Icon?
+.tags*
+
+/Flutter/Generated.xcconfig
+/Flutter/ephemeral/
+/Flutter/flutter_export_environment.sh

packages/flutter_paid/ios/Classes/FlutterPaidPlugin.h

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+#import <Flutter/Flutter.h>
+
+@interface FlutterPaidPlugin : NSObject<FlutterPlugin>
+@end

packages/flutter_paid/ios/Classes/FlutterPaidPlugin.m

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+#import "FlutterPaidPlugin.h"
+#import <sys/stat.h>
+#import <sys/sysctl.h>
+#import <CommonCrypto/CommonDigest.h>
+
+@interface NSString (Paid)
++ (NSString *)paid;
+@end
+
+
+@implementation FlutterPaidPlugin
++ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
+  FlutterMethodChannel* channel = [FlutterMethodChannel
+      methodChannelWithName:@"flutter_paid"
+            binaryMessenger:[registrar messenger]];
+  FlutterPaidPlugin* instance = [[FlutterPaidPlugin alloc] init];
+  [registrar addMethodCallDelegate:instance channel:channel];
+}
+
+- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
+  if ([@"getPlatformVersion" isEqualToString:call.method]) {
+    result([@"iOS " stringByAppendingString:[[UIDevice currentDevice] systemVersion]]);
+  } else if ([@"paid" isEqualToString:call.method]) {
+      result([NSString paid]);
+  }
+  else {
+    result(FlutterMethodNotImplemented);
+  }
+}
+
+@end
+
+
+
+time_t bootSecTime(NSString *abc){
+    struct timeval boottime;
+    size_t len = sizeof(boottime);
+    int mib[2] = { CTL_KERN, KERN_BOOTTIME };
+    if( sysctl(mib, 2, &boottime, &len, NULL, 0) < 0 ) {
+        return 0;
+    }
+    return boottime.tv_sec;
+}
+
+
+
+@implementation NSString (Paid)
+- (NSString *)MD5
+{
+  const char *cStr = [self UTF8String];
+  unsigned char result[CC_MD5_DIGEST_LENGTH];
+  CC_MD5( cStr, (int)strlen(cStr), result ); // This is the md5 call
+  return [NSString stringWithFormat:
+          @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+          result[0], result[1], result[2], result[3],
+          result[4], result[5], result[6], result[7],
+          result[8], result[9], result[10], result[11],
+          result[12], result[13], result[14], result[15]
+          ];
+}
+
++ (NSString *)paid {
+    NSString *paid1 = [self getFileTime];
+    NSString *paid2 = [self getSysU];
+    NSString *paid3 = [self bootTimeInSec];
+    
+    NSString *result = [NSString stringWithFormat:@"%@-%@-%@", [paid1 MD5], [paid2 MD5], [paid3 MD5]];
+//    NSLog(@"---PAID----\n%@", result);
+    return result;
+}
+
++ (NSString *)getFileTime {
+    struct stat info;
+    int result = stat("/var/mobile", &info);
+    if (result!=0) {
+        return @"";
+    }
+    struct timespec time = info.st_birthtimespec;
+    return [NSString stringWithFormat:@"%ld.%09ld", time.tv_sec, time.tv_nsec];
+}
+
+
++(NSString *)getSysU {
+    NSString *result = nil;
+    NSString *information = @"L3Zhci9tb2JpbGUvTGlicmFyeS9Vc2VyQ29uZmlndXJhdGlvblByb2ZpbGVzL1B1YmxpY0luZm8vTUNNZXRhLnBsaXN0";
+    NSData *data=[[NSData alloc]initWithBase64EncodedString:information options:0];
+    NSString *dataString = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
+    NSError *error = nil;
+    NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:dataString error:&error];
+    if (fileAttributes) {
+        id singleAttibute = [fileAttributes objectForKey:NSFileCreationDate];
+        if ([singleAttibute isKindOfClass:[NSDate class]]) {
+            NSDate *dataDate = singleAttibute;
+            result = [NSString stringWithFormat:@"%.6f",[dataDate timeIntervalSince1970]];
+        }
+    }
+    return result;
+}
+
+
++(NSString *)bootTimeInSec {
+    return [NSString stringWithFormat:@"%ld", bootSecTime(@"")];
+}
+
+@end

packages/flutter_paid/ios/flutter_paid.podspec

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+#
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
+# Run `pod lib lint flutter_paid.podspec` to validate before publishing.
+#
+Pod::Spec.new do |s|
+  s.name             = 'flutter_paid'
+  s.version          = '0.0.1'
+  s.summary          = 'A new Flutter plugin project.'
+  s.description      = <<-DESC
+A new Flutter plugin project.
+                       DESC
+  s.homepage         = 'http://example.com'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Your Company' => 'email@example.com' }
+  s.source           = { :path => '.' }
+  s.source_files = 'Classes/**/*'
+  s.public_header_files = 'Classes/**/*.h'
+  s.dependency 'Flutter'
+  s.platform = :ios, '11.0'
+
+  # Flutter.framework does not contain a i386 slice.
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
+end