读取一键喂鱼

Ifish/Utinitys/dataUnity/dataContorl.h

@@ -13,6 +13,12 @@
 +(NSData *) stringToHexData:(NSString*)string;
 +(NSString *)hexStringFromString:(NSString *)string;
 +(NSString *)ToHex:(long long int)tmpid;
+/// 十进制转二进制，补全，截取特定位置
+/// @param decimal 十进制
+/// @param location 截取位数从末尾开始1，2，3...
+/// @param totalLength 补全位数，例如8位，4位，传0不会处理
++ (NSString *)getBinaryByDecimal:(NSInteger)decimal location:(NSInteger)location totalLength:(NSInteger)totalLength;
+
 +(UInt64)hexToTen:(NSString*)str;
 +(NSString *)groupNumberTohex:(NSInteger)number;
 +(NSString *)stringFromHexString:(NSString *)hexString;

Ifish/Utinitys/dataUnity/dataContorl.m

@@ -109,7 +109,38 @@
     }
     return str;
 }
-
++ (NSString *)getBinaryByDecimal:(NSInteger)decimal location:(NSInteger)location totalLength:(NSInteger)totalLength {
+    NSString *binary = @"";
+    if (decimal != 0) {
+        while (decimal) {
+            binary = [[NSString stringWithFormat:@"%ld", decimal % 2] stringByAppendingString:binary];
+            if (decimal / 2 < 1) {
+                break;
+            }
+            decimal = decimal / 2 ;
+        }
+        // 根据需求传位数
+        if (totalLength > 0) {
+            if (binary.length % totalLength != 0) {
+                NSMutableString *mStr = [[NSMutableString alloc]init];
+                for (int i = 0; i < totalLength - binary.length % totalLength; i++) {
+                    [mStr appendString:@"0"];
+                }
+                binary = [mStr stringByAppendingString:binary];
+            }
+        }
+        // 保护
+        if (binary.length > 0 && binary.length >= location) {
+            // 截取特定位置的二进制字符
+            binary = [binary substringWithRange:NSMakeRange(binary.length-location, 1)];
+        } else {
+            binary = @"0";
+        }
+    } else {
+        binary = @"0";
+    }
+    return binary;
+}
 /// 1 - 10组
 +(NSString *)groupNumberTohex:(NSInteger)number{
     NSString *str = @"";