jadx導致失敗的酸碼？

Question

我剛剛使用Jadx來反編譯*.apk文件。該應用程序仍然運行良好。在Java反編譯器上查看結果：

public class Information extends BaseInformation implements InformationInterface { 
    private static final String LOG_TAG = "Information.java"; 
    public String decimalLength; 
    public String expression; 
    public String length; 
    public String signed; 
    public String start; 
    public String unit; 

    public Information() { 
     this.signed = "N"; 
    } 

    public String toString() { 
     return "information name = " + this.nameZh; 
    } 

    public boolean isSigned() { 
     if ("Y".equals(this.signed)) { 
      return true; 
    } 
    return false; 
} 

public String getValue() { 
    if (BluetoothTools.cmdArray == null || BluetoothTools.cmdArray.size() == 0) { 
     return this.unit; 
    } 
    int startInt = Integer.parseInt(this.start); 
    int lengthInt = Integer.parseInt(this.length); 
    int dLength = Integer.parseInt(this.decimalLength); 
    StringBuffer sb = new StringBuffer(); 
    int i; 
    StringBuffer stringBuffer; 
    int i2; 
    if (ConfigManager.getInstance().isBigEndian()) { 
     for (i = (startInt + lengthInt) - 1; i >= startInt; i--) { 
      stringBuffer = sb; 
      i2 = 0; 
      stringBuffer.insert(i2, (String) BluetoothTools.cmdArray.get(i)); 
     } 
    } else { 
     for (i = startInt; i < startInt + lengthInt; i++) { 
      stringBuffer = sb; 
      i2 = 0; 
      stringBuffer.insert(i2, (String) BluetoothTools.cmdArray.get(i)); 
     } 
    } 
    String hexString = sb.toString(); 
    long intValue = 0; 
    try { 
     if (isSigned()) { 
      intValue = new BigInteger(Hex2StringUtils.hexStringToByte(hexString)).longValue(); 
      Log.i(LOG_TAG, "isSigned intValue: " + intValue); 
     } else { 
      intValue = Long.parseLong(hexString, 16); 
     } 
    } catch (NumberFormatException e1) { 
     e1.printStackTrace(); 
    } 
    String value = ""; 
    try { 
     BigDecimal b = new BigDecimal(new ExpressionParser().calculate(this.expression.replace("x", new StringBuilder(String.valueOf(intValue)).toString()))); 
     if (dLength > 0) { 
      return new StringBuilder(String.valueOf(b.setScale(dLength, 4).doubleValue())).append(this.unit).toString(); 
     } else if (dLength != 0) { 
        return value; 
       } else { 
          return new StringBuilder(String.valueOf(b.setScale(dLength, 4).intValue())).append(this.unit).toString(); 
         } 
     } catch (ParserException e) { 
      e.printStackTrace(); 
      return value; 
     } 
    } 
} 

這個類反編譯失敗嗎？

StringBuffer sb發生了什麼？

它看起來像不包含任何字符串，所以hexString仍然爲NULL。

任何人都可以解釋我嗎？

Answer 1

有兩個地方插入字符串緩衝區的內容。例如，這裏

 stringBuffer = sb; 
     i2 = 0; 
     stringBuffer.insert(i2, (String) BluetoothTools.cmdArray.get(i)); 

所以，不，比特產的結果不會是空（或空字符串）。