android 一些数据转换方法
16lz
2021-01-23
android 一些数据转换方法
package com.ai9475.util;import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.PixelFormat;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.InputStream;/** * 数据格式转换工具类 * * Created by ZHOUZ on 14-2-15. */public class ZFormat{ private ZFormat() { } /** * 将byte[]转换成InputStream * * @param b * @return */ public static InputStream byte2InputStream(byte[] b) { ByteArrayInputStream bais = new ByteArrayInputStream(b); return bais; } /** * 将InputStream转换成byte[] * * @param is * @return */ public static byte[] inputStream2Bytes(InputStream is) { String str = ""; byte[] readByte = new byte[1024]; int readCount = -1; try { while ((readCount = is.read(readByte, 0, 1024)) != -1) { str += new String(readByte).trim(); } return str.getBytes(); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 将Bitmap转换成InputStream * * @param bm * @return */ public static InputStream bitmap2InputStream(Bitmap bm) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.JPEG, 100, baos); InputStream is = new ByteArrayInputStream(baos.toByteArray()); return is; } /** * 将Bitmap转换成InputStream * * @param bm * @param quality * @return */ public static InputStream bitmap2InputStream(Bitmap bm, int quality) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, quality, baos); InputStream is = new ByteArrayInputStream(baos.toByteArray()); return is; } /** * 将InputStream转换成Bitmap * * @param is * @return */ public static Bitmap inputStream2Bitmap(InputStream is) { return BitmapFactory.decodeStream(is); } // Drawable转换成InputStream public static InputStream drawable2InputStream(Drawable d) { Bitmap bitmap = drawable2Bitmap(d); return bitmap2InputStream(bitmap); } /** * InputStream转换成Drawable * * @param context * @param is * @return */ public static Drawable inputStream2Drawable(Context context, InputStream is) { Bitmap bitmap = inputStream2Bitmap(is); return bitmap2Drawable(context, bitmap); } /** * Drawable转换成byte[] * * @param d * @return */ public static byte[] drawable2Bytes(Drawable d) { Bitmap bitmap = drawable2Bitmap(d); return bitmap2Bytes(bitmap); } /** * byte[]转换成Drawable * * @param context * @param b * @return */ public static Drawable bytes2Drawable(Context context, byte[] b) { Bitmap bitmap = bytes2Bitmap(b); return bitmap2Drawable(context, bitmap); } /** * Bitmap转换成byte[] * * @param bm * @return */ public static byte[] bitmap2Bytes(Bitmap bm) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray(); } /** * byte[]转换成Bitmap * * @param b * @return */ public static Bitmap bytes2Bitmap(byte[] b) { if (b.length != 0) { return BitmapFactory.decodeByteArray(b, 0, b.length); } return null; } /** * Drawable转换成Bitmap * * @param drawable * @return */ public static Bitmap drawable2Bitmap(Drawable drawable) { Bitmap bitmap = Bitmap .createBitmap( drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); drawable.draw(canvas); return bitmap; } /** * Bitmap转换成Drawable * * @param context * @param bitmap * @return */ public static Drawable bitmap2Drawable(Context context, Bitmap bitmap) { Resources res = context.getResources(); BitmapDrawable bd = new BitmapDrawable(res, bitmap); Drawable d = (Drawable) bd; return d; }} 更多相关文章
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