添加净值率判断

app/src/main/java/com/sw/inbound/ext/StringExt.kt

@@ -72,8 +72,10 @@ fun String.toSafeDouble(): Double {
     }
 }
 
-fun String.isValidFloat(): Boolean {
+fun String.isValidFloat(maxFractionDigits: Int = 2): Boolean {
+    if (isEmpty()) return false
     if (startsWith(".")) return false
+
     // 处理前导零的情况
     if (length > 1 && startsWith("0")) {
         // 允许 "0" 和 "0.x" 但不允许 "00", "01", "00.1" 等
@@ -81,9 +83,14 @@ fun String.isValidFloat(): Boolean {
             return false
         }
     }
-    val decimalRegex = Regex("^\\d+\\.?\\d{0,2}$")
-    return this.matches(decimalRegex)
-//    return input.matches(Regex("-?\\d+(\\.\\d+)?"))
+
+    // 构建动态正则表达式
+    val decimalRegex = when {
+        maxFractionDigits <= 0 -> Regex("^\\d+$")  // 不允许小数
+        else -> Regex("^\\d+\\.?\\d{0,${maxFractionDigits}}$")
+    }
+
+    return matches(decimalRegex)
 }
 
 fun String.toSafeFloat(maxDecimalDigits: Int = 2): Float {