package com.hdl.sdk.hdl_core.Util.TransformUtil;
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import java.math.BigDecimal;
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/**
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* Created by JLChen on 2019/7/4
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*/
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public class HDLUtlis {
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/**
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* 将object转为Integer类型
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*
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* @param object
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* @return
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*/
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public static Integer getIntegerByObject(Object object) {
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Integer in = 0;
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if (object != null) {
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if (object instanceof Integer) {
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in = (Integer) object;
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} else if (object instanceof String) {
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in = Integer.parseInt((String) object);
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} else if (object instanceof Double) {
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in = (int) ((double) object);
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} else if (object instanceof Float) {
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in = (int) ((float) object);
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} else if (object instanceof BigDecimal) {
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in = ((BigDecimal) object).intValue();
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} else if (object instanceof Long) {
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in = ((Long) object).intValue();
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}
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}
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return in;
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}
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/**
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* 4 byte 转换为float类型
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*
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* @param b1
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* @param b2
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* @param b3
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* @param b4
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* @return
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*/
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public static float byteToFloat(byte b1, byte b2, byte b3, byte b4) {
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byte[] mByte = new byte[4];
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mByte[0] = b1;
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mByte[1] = b2;
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mByte[2] = b3;
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mByte[3] = b4;
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return byteArrayToFloat(mByte);
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}
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/**
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* byte[4]数组 转换为float类型
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*
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* @param arr 长度为4
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* @return
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*/
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public static float byteArrayToFloat(byte[] arr) {
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try {
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return Float.intBitsToFloat(getInt(arr));
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} catch (Exception e) {
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e.printStackTrace();
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return 0;
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}
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}
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/**
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* 连续4个字节获得一个int
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*
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* @param arr
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* @return int
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*/
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public static int getInt(byte[] arr) {
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return (0xff000000 & (arr[0] << 24)) |
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(0x00ff0000 & (arr[1] << 16)) |
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(0x0000ff00 & (arr[2] << 8)) |
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(0x000000ff & arr[3]);
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}
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/**
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* float转换为byte[4]数组
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*
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* @param f
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* @return
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*/
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public static byte[] getByteArray(float f) {
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int intbits = Float.floatToIntBits(f);//将float里面的二进制串解释为int整数
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return getByteArray(intbits);
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}
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}
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