package com.xjf.repository.utils;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
/**
* <pre>
* author: Blankj
* blog : http://blankj.com
* time : 2016/8/13
* desc : 转换相关工具类
* </pre>
*/
public class ConvertUtils {
static final char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
/**
* byteArr转hexString
* <p>例如：</p>
* bytes2HexString(new byte[] { 0, (byte) 0xa8 }) returns 00A8
*
* @param bytes byte数组
* @return 16进制大写字符串
*/
public static String bytes2HexString(byte[] bytes) {
char[] res = new char[bytes.length << 1];
for (int i = 0, j = 0; i < bytes.length; i++) {
res[j++] = hexDigits[bytes[i] >>> 4 & 0x0f];
res[j++] = hexDigits[bytes[i] & 0x0f];
}
return new String(res);
}
/**
* hexString转byteArr
* <p>例如：</p>
* hexString2Bytes("00A8") returns { 0, (byte) 0xA8 }
*
* @param hexString 十六进制字符串
* @return 字节数组
*/
public static byte[] hexString2Bytes(String hexString) {
int len = hexString.length();
if (len % 2 != 0) {
throw new IllegalArgumentException("长度不是偶数");
}
char[] hexBytes = hexString.toUpperCase().toCharArray();
byte[] res = new byte[len >>> 1];
for (int i = 0; i < len; i += 2) {
res[i >> 1] = (byte) (hex2Dec(hexBytes[i]) << 4 | hex2Dec(hexBytes[i + 1]));
}
return res;
}
/**
* hexChar转int
*
* @param hexChar hex单个字节
* @return 0..15
*/
private static int hex2Dec(char hexChar) {
if (hexChar >= '0' && hexChar <= '9') {
return hexChar - '0';
} else if (hexChar >= 'A' && hexChar <= 'F') {
return hexChar - 'A' + 10;
} else {
throw new IllegalArgumentException();
}
}
/**
* charArr转byteArr
*
* @param chars 字符数组
* @return 字节数组
*/
public static byte[] chars2Bytes(char[] chars) {
int len = chars.length;
byte[] bytes = new byte[len];
for (int i = 0; i < len; i++) {
bytes[i] = (byte) (chars[i]);
}
return bytes;
}
/**
* byteArr转charArr
*
* @param bytes 字节数组
* @return 字符数组
*/
public static char[] bytes2Chars(byte[] bytes) {
int len = bytes.length;
char[] chars = new char[len];
for (int i = 0; i < len; i++) {
chars[i] = (char) (bytes[i] & 0xff);
}
return chars;
}
/**
* inputStream转outputStream
*
* @param is 输入流
* @return outputStream子类
*/
public static ByteArrayOutputStream input2OutputStream(InputStream is) {
if (is == null) return null;
try {
ByteArrayOutputStream os = new ByteArrayOutputStream();
byte[] b = new byte[ConstUtils.KB];
int len;
while ((len = is.read(b)) != -1) {
os.write(b, 0, len);
}
return os;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
FileUtils.closeIO(is);
}
}
/**
* outputStream转inputStream
*
* @param out 输出流
* @return inputStream子类
*/
public ByteArrayInputStream output2InputStream(OutputStream out) {
if (out == null) return null;
return new ByteArrayInputStream(((ByteArrayOutputStream) out).toByteArray());
}
/**
* inputStream转byteArr
*
* @param is 输入流
* @return 字节数组
*/
public static byte[] inputStream2Bytes(InputStream is) {
return input2OutputStream(is).toByteArray();
}
/**
* byteArr转inputStream
*
* @param bytes 字节数组
* @return 输入流
*/
public static InputStream bytes2InputStream(byte[] bytes) {
return new ByteArrayInputStream(bytes);
}
/**
* outputStream转byteArr
*
* @param out 输出流
* @return 字节数组
*/
public static byte[] outputStream2Bytes(OutputStream out) {
if (out == null) return null;
return ((ByteArrayOutputStream) out).toByteArray();
}
/**
* outputStream转byteArr
*
* @param bytes 字节数组
* @return 字节数组
*/
public static OutputStream bytes2OutputStream(byte[] bytes) {
ByteArrayOutputStream os = null;
try {
os = new ByteArrayOutputStream();
os.write(bytes);
return os;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
FileUtils.closeIO(os);
}
}
/**
* inputStream转string按编码
*
* @param is 输入流
* @param charsetName 编码格式
* @return 字符串
*/
public static String inputStream2String(InputStream is, String charsetName) {
if (is == null || StringUtils.isSpace(charsetName)) return null;
try {
return new String(inputStream2Bytes(is), charsetName);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return null;
}
}
/**
* string转inputStream按编码
*
* @param string 字符串
* @param charsetName 编码格式
* @return 输入流
*/
public static InputStream string2InputStream(String string, String charsetName) {
if (string == null || StringUtils.isSpace(charsetName)) return null;
try {
return new ByteArrayInputStream(string.getBytes(charsetName));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return null;
}
}
/**
* outputStream转string按编码
*
* @param out 输出流
* @param charsetName 编码格式
* @return 字符串
*/
public static String outputStream2String(OutputStream out, String charsetName) {
if (out == null) return null;
try {
return new String(outputStream2Bytes(out), charsetName);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return null;
}
}
/**
* string转outputStream按编码
*
* @param string 字符串
* @param charsetName 编码格式
* @return 输入流
*/
public static OutputStream string2OutputStream(String string, String charsetName) {
if (string == null || StringUtils.isSpace(charsetName)) return null;
try {
return bytes2OutputStream(string.getBytes(charsetName));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return null;
}
}
/**
* bitmap转byteArr
*
* @param bitmap bitmap对象
* @param format 格式
* @return 字节数组
*/
public static byte[] bitmap2Bytes(Bitmap bitmap, Bitmap.CompressFormat format) {
if (bitmap == null) return null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(format, 100, baos);
return baos.toByteArray();
}
/**
* byteArr转bitmap
*
* @param bytes 字节数组
* @return bitmap对象
*/
public static Bitmap bytes2Bitmap(byte[] bytes) {
return (bytes == null || bytes.length == 0) ? null : BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
}
/**
* drawable转bitmap
*
* @param drawable drawable对象
* @return bitmap对象
*/
public static Bitmap drawable2Bitmap(Drawable drawable) {
return drawable == null ? null : ((BitmapDrawable) drawable).getBitmap();
}
/**
* bitmap转drawable
*
* @param resources resources对象
* @param bitmap bitmap对象
* @return drawable对象
*/
public static Drawable bitmap2Drawable(Resources resources, Bitmap bitmap) {
return bitmap == null ? null : new BitmapDrawable(resources, bitmap);
}
/**
* drawable转byteArr
*
* @param drawable drawable对象
* @param format 格式
* @return 字节数组
*/
public static byte[] drawable2Bytes(Drawable drawable, Bitmap.CompressFormat format) {
return bitmap2Bytes(drawable2Bitmap(drawable), format);
}
/**
* byteArr转drawable
*
* @param resources resources对象
* @param bytes 字节数组
* @return drawable对象
*/
public static Drawable bytes2Drawable(Resources resources, byte[] bytes) {
return bitmap2Drawable(resources, bytes2Bitmap(bytes));
}
/**
* dp转px
*
* @param context 上下文
* @param dpValue dp值
* @return px值
*/
public static int dp2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* px转dp
*
* @param context 上下文
* @param pxValue px值
* @return dp值
*/
public static int px2dp(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* sp转px
*
* @param context 上下文
* @param spValue sp值
* @return px值
*/
public static int sp2px(Context context, float spValue) {
final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
return (int) (spValue * fontScale + 0.5f);
}
/**
* px转sp
*
* @param context 上下文
* @param pxValue px值
* @return sp值
*/
public static int px2sp(Context context, float pxValue) {
final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
return (int) (pxValue / fontScale + 0.5f);
}
}