package com.lfk.justwetools.Utils;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.Base64;
import android.view.Display;
import android.view.View;
import android.view.WindowManager;
import android.widget.ScrollView;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
/**
* 图片处理工具类
*
* @author liufengkai
*/
public class PicUtils {
/**
* 将Bitmap转换成字符串
*
* @param bitmap 传入图片的bitmap
* @return String
*/
public static String bitmapToString(Bitmap bitmap) {
String bitmapString = null;
ByteArrayOutputStream bStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, bStream);
byte[] bytes = bStream.toByteArray();
bitmapString = Base64.encodeToString(bytes, Base64.DEFAULT);
return bitmapString;
}
/**
* 将字符串转换成Bitmap类型
*
* @param string 传入图片转出的字符串
* @return Bitmap
*/
public static Bitmap stringToBitmap(String string) {
Bitmap bitmap = null;
try {
byte[] bitmapArray;
bitmapArray = Base64.decode(string, Base64.DEFAULT);
bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0, bitmapArray.length);
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}
/**
* 生成截图,不包含ActionBar
*
* @param context 传入Context
* @return Bitmap
*/
public static Bitmap printScreenWithOutActionBar(Activity context) {
// 获取屏幕
View view = context.getWindow().getDecorView();
Display display = context.getWindowManager().getDefaultDisplay();
view.layout(0, 0, display.getWidth(), display.getHeight());
view.setDrawingCacheEnabled(true);
// 以一个矩形进行截图
Rect frame = new Rect();
context.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
// 获取高度
int statusBarHeight = frame.top;
int width = context.getWindowManager().getDefaultDisplay().getWidth();
int height = context.getWindowManager().getDefaultDisplay()
.getHeight();
// 获取ActionBar的高度
TypedArray actionbarSizeTypedArray = context.obtainStyledAttributes(new int[]{
android.R.attr.actionBarSize});
int h = (int) actionbarSizeTypedArray.getDimension(0, 0);
// 生成Bitmap
return Bitmap.createBitmap(view.getDrawingCache(), 0, statusBarHeight + h, width, height
- statusBarHeight - h);
// 生成文件
// File f = new File(Environment.getExternalStorageDirectory(),
// "output_image.jpg");
// FileOutputStream fOut = null;
// try {
// fOut = new FileOutputStream(f);
// bmp.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
// fOut.flush();
// fOut.close();
// } catch (IOException e) {
// e.printStackTrace();
// }
// return Uri.fromFile(f);
}
/**
* 截取整个屏幕
*
* @param context
* @return Bitmap
*/
public Bitmap printAllScreen(Activity context) {
View view = context.getWindow().getDecorView();
Display display = context.getWindowManager().getDefaultDisplay();
view.layout(0, 0, display.getWidth(), display.getHeight());
view.setDrawingCacheEnabled(true);
return Bitmap.createBitmap(view.getDrawingCache());
}
/**
* 合成图层
*
* @param background 背景
* @param foreground 前景
* @return Bitmap
*/
private Bitmap toConformBitmap(Bitmap background, Bitmap foreground) {
if (background == null || foreground == null) {
return null;
}
int bgWidth = background.getWidth();
int bgHeight = background.getHeight();
Bitmap bitmap = Bitmap.createBitmap(bgWidth, bgHeight, Bitmap.Config.ARGB_8888);
Canvas cv = new Canvas(bitmap);
cv.drawBitmap(background, 0, 0, null);
cv.drawBitmap(foreground, 0, 0, null);
// 保存
cv.save(Canvas.ALL_SAVE_FLAG);
// 存储
cv.restore();
return bitmap;
}
/**
* 将View转换为图片
*
* @param view 传入一个View
* @return Bitmap
*/
public static Bitmap getBitmapFromView(View view) {
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(returnedBitmap);
Drawable bgDrawable = view.getBackground();
if (bgDrawable != null)
bgDrawable.draw(canvas);
else
canvas.drawColor(Color.WHITE);
view.draw(canvas);
return returnedBitmap;
}
/**
* 自动压缩图片
*
* @param image 传入图片bitmap
* @return bitmap
*/
public static Bitmap compressImage(Bitmap image) {
ByteArrayOutputStream baoS = new ByteArrayOutputStream();
// 质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baoS中
int options = 100;
image.compress(Bitmap.CompressFormat.JPEG, 100, baoS);
// 循环判断如果压缩后图片是否大于100kb,大于继续压缩
while (baoS.toByteArray().length / 1024 > 100) {
// 重置baoS即清空baoS
baoS.reset();
// 压缩options%，把压缩后的数据存放到baos中
image.compress(Bitmap.CompressFormat.JPEG, options, baoS);
options -= 10;
}
// 把压缩后的数据baos存放到ByteArrayInputStream中
ByteArrayInputStream isBm = new ByteArrayInputStream(baoS.toByteArray());
// 把ByteArrayInputStream数据生成图片
return BitmapFactory.decodeStream(isBm, null, null);
}
/**
* 指定压缩的质量压缩图片
*
* @param image 传入图片的Bitmap
* @param options 压缩图片质量
* @return bitmap
*/
public static Bitmap compressImage(Bitmap image, int options) {
ByteArrayOutputStream baoS = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, options, baoS);
ByteArrayInputStream isBm = new ByteArrayInputStream(baoS.toByteArray());
return BitmapFactory.decodeStream(isBm, null, null);
}
/**
* 按照比例进行缩放
*
* @param image 传入的Bitmap
* @param width 传入的宽度
* @param height 传入的高度
* @return Bitmap
*/
private static Bitmap compressWithMeasure(Bitmap image, int width, int height) {
ByteArrayOutputStream baoS = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 100, baoS);
// 判断如果图片大于1M,进行压缩避免在生成图片（BitmapFactory.decodeStream）时溢出
if (baoS.toByteArray().length / 1024 > 1024) {
// 重置baoS即清空baoS
baoS.reset();
// 这里压缩50%，把压缩后的数据存放到baoS中
image.compress(Bitmap.CompressFormat.JPEG, 50, baoS);
}
ByteArrayInputStream isBm = new ByteArrayInputStream(baoS.toByteArray());
BitmapFactory.Options newOpts = new BitmapFactory.Options();
// 开始读入图片，此时把options.inJustDecodeBounds 设回true了
newOpts.inJustDecodeBounds = true;
Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
newOpts.inJustDecodeBounds = false;
int w = newOpts.outWidth;
int h = newOpts.outHeight;
// 缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
// be = 1表示不缩放
int be = 1;
if (w > h && w > width) {
// 如果宽度大的话根据宽度固定大小缩放
be = newOpts.outWidth / width;
} else if (w < h && h > height) {
// 如果高度高的话根据宽度固定大小缩放
be = newOpts.outHeight / height;
}
if (be <= 0)
be = 1;
// 设置缩放比例
newOpts.inSampleSize = be;
// 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
isBm = new ByteArrayInputStream(baoS.toByteArray());
bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
// 压缩好比例大小后再进行质量压缩
return compressImage(bitmap);
}
/**
* 按照原比例进行缩放
*
* @param image
* @return Bitmap
*/
public static Bitmap compressWithMeasure(Bitmap image) {
return compressWithMeasure(image, image.getWidth(), image.getHeight());
}
/**
* 获取网络上的图片
*
* @param url
* @return
*/
public static Bitmap getHttpBitmap(String url) {
URL myFileURL;
Bitmap bitmap = null;
try {
myFileURL = new URL(url);
// 获得连接
HttpURLConnection conn = (HttpURLConnection) myFileURL.openConnection();
conn.setConnectTimeout(6000);// 设置超时时间为6000毫秒，conn.setConnectionTiem(0);表示没有时间限制
conn.setDoInput(true);// 连接设置获得数据流
conn.setUseCaches(false);// 不使用缓存
InputStream is = conn.getInputStream();// 得到数据流，这里会有调用conn.connect();
// 解析得到图片
bitmap = BitmapFactory.decodeStream(is);
is.close();// 关闭数据流
} catch (Exception e) {
e.printStackTrace();
}
return bitmap;
}
/**
* 从资源中获取Bitmap
*
* @param context
* @param resid 例如这样：R.drawable.icon
* @return
*/
public static Bitmap getBitmapFromResources(Context context, int resid) {
Resources res = context.getResources();
Bitmap bitmap = BitmapFactory.decodeResource(res, resid);
return bitmap;
}
/**
* Bitmap转字节
*
* @param bitmap
* @return
*/
public byte[] Bitmap2Bytes(Bitmap bitmap) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
return baos.toByteArray();
}
/**
* 字节转Bitmap
*
* @param bytes
* @return
*/
public Bitmap Bytes2Bimap(byte[] bytes) {
if (bytes.length != 0) {
return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
} else {
return null;
}
}
/**
* Bitmap缩放，可能比例要注意一下
*
* @param bitmap
* @param width
* @param height
* @return
*/
public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix matrix = new Matrix();
float scaleWidth = ((float) width / w);
float scaleHeight = ((float) height / h);
matrix.postScale(scaleWidth, scaleHeight);
Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
return newbmp;
}
/**
* 将Drawable转化为Bitmap
*
* @param drawable
* @return
*/
public static Bitmap drawable2Bitmap(Drawable drawable) {
// 取 drawable 的长宽
int w = drawable.getIntrinsicWidth();
int h = drawable.getIntrinsicHeight();
// 取 drawable 的颜色格式
Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565;
// 建立对应 bitmap
Bitmap bitmap = Bitmap.createBitmap(w, h, config);
// 建立对应 bitmap 的画布
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, w, h);
// 把 drawable 内容画到画布中
drawable.draw(canvas);
return bitmap;
}
/**
* Bitmap转换成Drawable
*
* @param context
* @param bitmap
* @return
*/
public static Drawable Bitmap2Drawable(Context context, Bitmap bitmap) {
return new BitmapDrawable(context.getResources(), bitmap);
}
/**
* 获得圆角图片
*
* @param bitmap
* @param roundPx
* @return
*/
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Bitmap output = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, w, h);
final RectF rectF = new RectF(rect);
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
/**
* 获得带倒影的图片
*
* @param bitmap
* @return
*/
public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) {
final int reflectionGap = 4;
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix matrix = new Matrix();
matrix.preScale(1, -1);
Bitmap reflectionImage;
reflectionImage = Bitmap.createBitmap(bitmap, 0, h / 2, w, h / 2, matrix, false);
Bitmap bitmapWithReflection = Bitmap.createBitmap(w, (h + h / 2), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmapWithReflection);
canvas.drawBitmap(bitmap, 0, 0, null);
Paint defaultPaint = new Paint();
canvas.drawRect(0, h, w, h + reflectionGap, defaultPaint);
canvas.drawBitmap(reflectionImage, 0, h + reflectionGap, null);
Paint paint = new Paint();
LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0, bitmapWithReflection.getHeight()
+ reflectionGap, 0x70ffffff, 0x00ffffff, Shader.TileMode.CLAMP);
paint.setShader(shader);
// Set the Transfer mode to be porter duff and destination in
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
// Draw a rectangle using the paint with our linear gradient
canvas.drawRect(0, h, w, bitmapWithReflection.getHeight() + reflectionGap, paint);
return bitmapWithReflection;
}
public static class ImagePiece {
public Bitmap bitmap = null;
public int index = 0;
public ImagePiece(Bitmap bitmap) {
this.bitmap = bitmap;
this.index = 0;
}
public ImagePiece(Bitmap bitmap, int index) {
this.bitmap = bitmap;
this.index = index;
}
}
/**
* 截图分片
*
* @param context
* @param bitmap
* @return
*/
public static List<ImagePiece> spilt(Context context, Bitmap bitmap) {
int screenHeight = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay().getHeight();
List<ImagePiece> list = new ArrayList<>();
if (bitmap.getHeight() <= screenHeight) {
list.add(new ImagePiece(bitmap));
return list;
}
int pageNum = Math.round(bitmap.getHeight() * 1.0f / screenHeight);
for (int i = 0; i < pageNum; i++) {
int xValue = 0;
int yValue = i * screenHeight + DisplayUtils.dp2px(context, 16);
list.add(new ImagePiece(
Bitmap.createBitmap(bitmap, xValue, yValue,
bitmap.getWidth(), screenHeight),
i));
}
return list;
}
/**
* 截取ScrollView
*
* @param v
* @return
*/
public static Bitmap createBitmap(Context context, ScrollView v) {
int width = 0, height = 0;
for (int i = 0; i < v.getChildCount(); i++) {
width += v.getChildAt(i).getWidth();
height += v.getChildAt(i).getHeight();
}
if (width <= 0 || height <= 0) {
return null;
}
int h = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getHeight();
if (height < h)
height = h;
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
v.draw(canvas);
return bitmap;
}
/**
* 制作圆形图片
*
* @param rect
*/
public static Bitmap rectBitmapToCircle(Bitmap rect) {
Shader mBitmapShader = new BitmapShader(rect, Shader.TileMode.CLAMP,
Shader.TileMode.CLAMP);
Paint paint = new Paint();
paint.setShader(mBitmapShader);
Bitmap output = Bitmap.createBitmap(rect.getWidth(), rect.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
canvas.drawCircle(rect.getWidth() / 2,
rect.getHeight() / 2,
Math.min(rect.getWidth(), rect.getHeight()) / 2
, paint);
return output;
}
}