开发工具类 BitmapUtils
2018-06-12 本文已影响328人
MrHorse1992
BitmapUtils各种姿势操作Bitmap
public class BitmapUtils {
/**
* 采样率压缩，按照图片宽高自动计算缩放比
*
* @param filePath 文件路径
* @param reqHeight 设置宽高并不是设置图片实际宽高，而是根据宽高自动计算缩放比，压缩后图片不会变形，宽高会根据计算的缩放比同时缩放，
* 宽高建议都设置300 设置300后图片大小为100-200KB，图片质量能接受；设置为400到500，图片大小为500-600kb，上传偏大，可自行设置
* @param reqWidth
* @return
*/
public static Bitmap getSmallBitmap(String filePath, int reqHeight, int reqWidth) {
//读取Bitmap文件
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filePath, options);
//计算图片的缩放值
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int heightRatio = Math.round((float) height / (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
options.inSampleSize = inSampleSize;
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(filePath, options);
}
/**
*这个可以压缩到指定的宽，但是图片大小可能达不到预期，图片本身较小的可以使用，图片较大的建议使用上一个压缩方式
* 根据自定义宽度设置图片大小，高度自适应 0不压缩
*
* @param path
* @param width
* @return
*/
public static Bitmap createScaledBitemap(String path, int width) {
Bitmap bit = BitmapFactory.decodeFile(path);
int bitWidth = bit.getWidth();//得到图片宽
float scaleWidth = ((float) width) / ((float) bitWidth);//计算宽度缩放比例
if (width == 0) {
return bit;
} else {
int height = (int) (bit.getHeight() * scaleWidth);//根据宽度缩放比例设置高度
Bitmap bitmap = Bitmap.createScaledBitmap(bit, width, height, true);
return bitmap;
}
}
/**
*这是个保存Bitmap到sd卡中的方法，可以返回保存图片的路径
* 保存Bitmap到sd
*
* @param mBitmap
* @param bitName 图片保存的名称，返回存储图片的路径
*/
public static String saveBitmap(Bitmap mBitmap, String bitName) {
File f;
//判断是否有sd卡 有就保存到sd卡，没有就保存到app缓存目录
if (isStorage()) {
File file = new File("/data/data/name");//保存的路径
if (!file.exists()) {//判断目录是否存在
file.mkdir();//不存在就创建目录
}
f = new File(file, bitName + ".jpg");
} else {
File file = new File(AppContext.getContext().getCacheDir().toString());
if (!file.exists()) {//判断目录是否存在
file.mkdir();
}
f = new File(file, bitName + ".jpg");
}
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(f);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
if (fOut != null) {
mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
try {
fOut.flush();
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return f.toString();
}
/**
* 判断是否有sd卡
*
* @return
*/
public static boolean isStorage() {
boolean isstorage = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
return isstorage;
}
/**
*把Bimtmap转成Base64，用于上传图片到服务器，一般是先压缩然后转成Base64，再上传
*/
public static String getBitmapStrBase64(Bitmap bitmap) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] bytes = baos.toByteArray();
return Base64.encodeToString(bytes, Base64.NO_WRAP);
}
public static String bitmapToBase64(Bitmap bitmap) {
String result = null;
ByteArrayOutputStream baos = null;
try {
if (bitmap != null) {
baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
baos.flush();
baos.close();
byte[] bitmapBytes = baos.toByteArray();
result = Base64.encodeToString(bitmapBytes, Base64.NO_WRAP);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (baos != null) {
baos.flush();
baos.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
// 把Base64转换成Bitmap
public static Bitmap getBitmapFromBase64(String iconBase64) {
byte[] bitmapArray = Base64.decode(iconBase64, Base64.DEFAULT);
return BitmapFactory.decodeByteArray(bitmapArray, 0, bitmapArray.length);
}
/**
* 将控件转换成bitmap类型
* @return Bitmap
* @param paramView ：需要转换的控件
*/
public static Bitmap convertViewToBitmap(View paramView) {
paramView.measure(
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
paramView.layout(0, 0, paramView.getMeasuredWidth(),
paramView.getMeasuredHeight());
paramView.buildDrawingCache();
return paramView.getDrawingCache();
}
/**
* 创建倒影图片
* @return Bitmap
* @param srcBitmap
* 源图片的bitmap
* @param reflectionHeight
* 图片倒影的高度
*/
public static Bitmap createReflectedBitmap(Bitmap srcBitmap,
int reflectionHeight) {
if (null == srcBitmap) {
Log.e(TAG, "the srcBitmap is null");
return null;
}
// The gap between the reflection bitmap and original bitmap.
final int REFLECTION_GAP = 0;
//获取源图片的宽高
int srcWidth = srcBitmap.getWidth();
int srcHeight = srcBitmap.getHeight();
if (0 == srcWidth || srcHeight == 0) {
Log.e(TAG, "the srcBitmap is null");
return null;
}
// The matrix
Matrix matrix = new Matrix();
matrix.preScale(1, -1);
try {
// The reflection bitmap, width is same with original's, height is
// half of original's.
Bitmap reflectionBitmap = Bitmap.createBitmap(srcBitmap, 0,
srcHeight - reflectionHeight, srcWidth, reflectionHeight,
matrix, false);
if (null == reflectionBitmap) {
Log.e(TAG, "Create the reflectionBitmap is failed");
return null;
}
// Create the bitmap which contains original and reflection bitmap.
Bitmap bitmapWithReflection = Bitmap.createBitmap(srcWidth,
srcHeight + reflectionHeight, Bitmap.Config.ARGB_8888);
if (null == bitmapWithReflection) {
return null;
}
// Prepare the canvas to draw stuff.
Canvas canvas = new Canvas(bitmapWithReflection);
// Draw the original bitmap.
canvas.drawBitmap(srcBitmap, 0, 0, null);
// Draw the reflection bitmap.
canvas.drawBitmap(reflectionBitmap, 0, srcHeight + REFLECTION_GAP,
null);
Paint paint = new Paint();
paint.setAntiAlias(true);
LinearGradient shader = new LinearGradient(0, srcHeight, 0,
bitmapWithReflection.getHeight() + REFLECTION_GAP,
0x70FFFFFF, 0x00FFFFFF, TileMode.MIRROR);
paint.setShader(shader);
paint.setXfermode(new PorterDuffXfermode(
android.graphics.PorterDuff.Mode.DST_IN));
canvas.save();
// Draw the linear shader.
canvas.drawRect(0, srcHeight, srcWidth,
bitmapWithReflection.getHeight() + REFLECTION_GAP, paint);
if (reflectionBitmap != null && !reflectionBitmap.isRecycled()) {
reflectionBitmap.recycle();
reflectionBitmap = null;
}
canvas.restore();
return bitmapWithReflection;
} catch (Exception e) {
e.printStackTrace();
}
Log.e(TAG, "Create the reflectionBitmap is failed");
return null;
}
/**
* 图片圆角处理
* @return Bitmap
* @param srcBitmap
* 源图片的bitmap
* @param ret
* 圆角的度数
*/
public static Bitmap getRoundImage(Bitmap srcBitmap, float ret) {
if (null == srcBitmap) {
Log.e(TAG, "the srcBitmap is null");
return null;
}
int bitWidth = srcBitmap.getWidth();
int bitHight = srcBitmap.getHeight();
BitmapShader bitmapShader = new BitmapShader(srcBitmap,
Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(bitmapShader);
RectF rectf = new RectF(0, 0, bitWidth, bitHight);
Bitmap outBitmap = Bitmap.createBitmap(bitWidth, bitHight,
Config.ARGB_8888);
Canvas canvas = new Canvas(outBitmap);
canvas.drawRoundRect(rectf, ret, ret, paint);
canvas.save();
canvas.restore();
return outBitmap;
}
/**
* 图片沿着Y轴旋转一定角度
* @param srcBitmap
* 源图片的bitmap
* @param reflectionHeight
* 图片倒影的高度
* @param rotate
* 图片旋转的角度
*/
public static Bitmap skewImage(Bitmap srcBitmap, float rotate,
int reflectionHeight) {
if (null == srcBitmap) {
Log.e(TAG, "the srcBitmap is null");
return null;
}
Bitmap reflecteBitmap = createReflectedBitmap(srcBitmap,
reflectionHeight);
if (null == reflecteBitmap) {
Log.e(TAG, "failed to createReflectedBitmap");
return null;
}
int wBitmap = reflecteBitmap.getWidth();
int hBitmap = reflecteBitmap.getHeight();
float scaleWidth = ((float) 180) / wBitmap;
float scaleHeight = ((float) 270) / hBitmap;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
reflecteBitmap = Bitmap.createBitmap(reflecteBitmap, 0, 0, wBitmap,
hBitmap, matrix, true);
Camera localCamera = new Camera();
localCamera.save();
Matrix localMatrix = new Matrix();
localCamera.rotateY(rotate);
localCamera.getMatrix(localMatrix);
localCamera.restore();
localMatrix.preTranslate(-reflecteBitmap.getWidth() >> 1,
-reflecteBitmap.getHeight() >> 1);
Bitmap localBitmap2 = Bitmap.createBitmap(reflecteBitmap, 0, 0,
reflecteBitmap.getWidth(), reflecteBitmap.getHeight(),
localMatrix, true);
Bitmap localBitmap3 = Bitmap.createBitmap(localBitmap2.getWidth(),
localBitmap2.getHeight(), Bitmap.Config.ARGB_8888);
Canvas localCanvas = new Canvas(localBitmap3);
Paint localPaint = new Paint();
localPaint.setAntiAlias(true);
localPaint.setFilterBitmap(true);
localCanvas.drawBitmap(localBitmap2, 0.0F, 0.0F, localPaint);
if (null != reflecteBitmap && !reflecteBitmap.isRecycled()) {
reflecteBitmap.recycle();
reflecteBitmap = null;
}
if (null != localBitmap2 && !localBitmap2.isRecycled()) {
localBitmap2.recycle();
localBitmap2 = null;
}
localCanvas.save();
localCanvas.restore();
return localBitmap3;
}
/**
*图片模糊化处理
* @return Bitmap
* @param bitmap
* 源图片
* @param radius
* 模糊半径，范围为0~25
*/
public static Bitmap blurBitmap(Bitmap bitmap, float radius, Context context) {
//创建与原Bitmap同等大小的Bitmap
Bitmap outBitmap = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Config.ARGB_8888);
// 创建一个渲染脚本
RenderScript rs = RenderScript.create(context);
// Create an Intrinsic Blur Script using the Renderscript
ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs,
Element.U8_4(rs));
//分配大小
Allocation allIn = Allocation.createFromBitmap(rs, bitmap);
Allocation allOut = Allocation.createFromBitmap(rs, outBitmap);
//设置模糊半径
if (radius > 25) {
radius = 25.0f;
} else if (radius <= 0) {
radius = 1.0f;
}
blurScript.setRadius(radius);
// 执行渲染
blurScript.setInput(allIn);
blurScript.forEach(allOut);
// 复制最终bitmap
allOut.copyTo(outBitmap);
// 回收Bitmap资源
bitmap.recycle();
bitmap = null;
// 销毁渲染脚本
rs.destroy();
return outBitmap;
}
/**
* TODO<给图片添加指定颜色的边框>
*
* @param srcBitmap
* 原图片
* @param borderWidth
* 边框宽度
* @param color
* 边框的颜色值
* @return
*/
public static Bitmap addFrameBitmap(Bitmap srcBitmap, int borderWidth,
int color) {
if (srcBitmap == null) {
Log.e(TAG, "the srcBitmap or borderBitmap is null");
return null;
}
int newWidth = srcBitmap.getWidth() + borderWidth;
int newHeight = srcBitmap.getHeight() + borderWidth;
Bitmap outBitmap = Bitmap.createBitmap(newWidth, newHeight,
Config.ARGB_8888);
Canvas canvas = new Canvas(outBitmap);
Rect rec = canvas.getClipBounds();
rec.bottom--;
rec.right--;
Paint paint = new Paint();
// 设置边框颜色
paint.setColor(color);
paint.setStyle(Paint.Style.STROKE);
// 设置边框宽度
paint.setStrokeWidth(borderWidth);
canvas.drawRect(rec, paint);
canvas.drawBitmap(srcBitmap, borderWidth / 2, borderWidth / 2, null);
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
if (srcBitmap != null && !srcBitmap.isRecycled()) {
srcBitmap.recycle();
srcBitmap = null;
}
return outBitmap;
}
public static Bitmap decodeSampledBitmapFromResource(Resources res,
int resId, int reqWidth, int reqHeight) {
final BitmapFactory.Options options = new BitmapFactory.Options();
// 先将inJustDecodeBounds属性设置为true,解码避免内存分配
options.inJustDecodeBounds = true;
// 将图片传入选择器中
BitmapFactory.decodeResource(res, resId, options);
// 对图片进行指定比例的压缩
options.inSampleSize = calculateInSampleSize(options, reqWidth,
reqHeight);
// 待图片处理完成后再进行内存的分配，避免内存泄露的发生
options.inJustDecodeBounds = false;
return BitmapFactory.decodeResource(res, resId, options);
}
// 计算图片的压缩比例
public static int calculateInSampleSize(BitmapFactory.Options option,
int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = option.outHeight;
final int width = option.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int heightRatio = Math.round((float) height
/ (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
// 选择长宽高较小的比例，成为压缩比例
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
return inSampleSize;
}
/**
* 创建指定大小Bitmap
* @param source : 源Bitmap
* @param width ： 宽度
* @param height ： 高度
*/
public static Bitmap Thumbnail(Bitmap bm, int reqWidth, int reqHeight) {
Bitmap bmp = null;
bmp = ThumbnailUtils.extractThumbnail(bm, reqWidth, reqHeight);
return bmp;
}
/**
* Creates a centered bitmap of the desired size.
*
* @param source
* original bitmap source
* @param width
* targeted width
* @param height
* targeted height
* @param options
* options used during thumbnail extraction
*/
public static Bitmap Thumbnail(Bitmap bm, int reqWidth, int reqHeight,
int options) {
Bitmap bmp = null;
bmp = ThumbnailUtils.extractThumbnail(bm, reqWidth, reqHeight, options);
return bmp;
}
/**
* 创建文件视频的缩略图
*
* @param filePath ： 视频文件路径
*
* @param kind ： MINI_KIND 或 MICRO_KIND
*
*/
public static Bitmap createVideoThumbnail(String filePath, int kind) {
return ThumbnailUtils.createVideoThumbnail(filePath, kind);
}
//创建文件图片的缩略图
/**
* This method first examines if the thumbnail embedded in EXIF is bigger
* than our target size. If not, then it'll create a thumbnail from original
* image. Due to efficiency consideration, we want to let MediaThumbRequest
* avoid calling this method twice for both kinds, so it only requests for
* MICRO_KIND and set saveImage to true. This method always returns a
* "square thumbnail" for MICRO_KIND thumbnail.
*
* @param filePath
* the path of image file
* @param kind
* could be Images.Thumbnails.MINI_KIND or
* Images.Thumbnails.MINI_KIND
* @return Bitmap, or null on failures
* @hide This method is only used by media framework and media provider
* internally.
*/
public static Bitmap createImageThumbnail(String filePath, int kind) {
return ThumbnailUtils.createImageThumbnail(filePath, kind);
}
/**
* 屏幕分辨率和指定清晰度的图片压缩方法
*
* @param context
* @param image Bitmap图片
* @return
*/
public static Bitmap comp(Context context, Bitmap image) {
int maxLength = 1024 * 1024; // 预定的图片最大内存，单位byte
// 压缩大小
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 100, baos);// 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;
while (baos.toByteArray().length > maxLength) { // 循环判断，大于继续压缩
options -= 10;// 每次都减少10
baos.reset();// 重置baos即清空baos
image.compress(Bitmap.CompressFormat.JPEG, options, baos);//PNG 压缩options%
}
// 压缩尺寸
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
BitmapFactory.Options opts = new BitmapFactory.Options(); // 选项对象(在加载图片时使用)
opts.inJustDecodeBounds = true; // 修改选项, 只获取大小
BitmapFactory.decodeStream(bais, null, opts);// 加载图片(只得到图片大小)
// 获取屏幕大小，按比例压缩
WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
int scaleX = opts.outWidth / manager.getDefaultDisplay().getWidth(); // X轴缩放比例(图片宽度/屏幕宽度)
int scaleY = opts.outHeight / manager.getDefaultDisplay().getHeight(); // Y轴缩放比例
int scale = scaleX > scaleY ? scaleX : scaleY; // 图片的缩放比例(X和Y哪个大选哪个)
opts.inJustDecodeBounds = false; // 修改选项, 不只解码边界
opts.inSampleSize = scale > 1 ? scale : 1; // 修改选项, 加载图片时的缩放比例
return BitmapFactory.decodeStream(bais, null, opts); // 加载图片(得到压缩后的图片)
}
/**
* 屏幕分辨率和指定清晰度的图片压缩方法
*
* @param context
* @param path 图片的路径
* @return
*/
public static Bitmap comp(Context context, String path) {
return compressImage(getUsableImage(context, path));
}
/**
* 获取屏幕分辨率的Bitmap
*
* @param context
* @param path 图片的路径
* @return
*/
public static Bitmap getUsableImage(Context context, String path) {
BitmapFactory.Options opts = new BitmapFactory.Options(); // 选项对象(在加载图片时使用)
opts.inJustDecodeBounds = true; // 修改选项, 只获取大小
BitmapFactory.decodeFile(path, opts); // 加载图片(只得到图片大小)
DisplayMetrics metrics = new DisplayMetrics();
metrics = context.getApplicationContext().getResources().getDisplayMetrics();
int scaleX = opts.outWidth / metrics.widthPixels; // X轴缩放比例(图片宽度/屏幕宽度)
int scaleY = opts.outHeight / metrics.heightPixels; // Y轴缩放比例
int scale = scaleX > scaleY ? scaleX : scaleY; // 图片的缩放比例(X和Y哪个大选哪个)
opts.inJustDecodeBounds = false; // 修改选项, 不只解码边界
opts.inSampleSize = scale > 1 ? scale : 1; // 修改选项, 加载图片时的缩放比例
return BitmapFactory.decodeFile(path, opts); // 加载图片(得到缩放后的图片)
}
/**
* 压缩图片清晰度，到指定大小
*
* @param image
* @return
*/
public static Bitmap compressImage(Bitmap image) {
int maxLength = 1024 * 1024; // (byte)
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 100, baos);// 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;
while (baos.toByteArray().length > maxLength) { // 循环判断如果压缩后图片是否大于1mb,大于继续压缩
options -= 10;// 每次都减少10
baos.reset();// 重置baos即清空baos
image.compress(Bitmap.CompressFormat.JPEG, options, baos);// 这里压缩options%，把压缩后的数据存放到baos中
}
ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());// 把压缩后的数据baos存放到ByteArrayInputStream中
Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);// 把ByteArrayInputStream数据生成图片
return bitmap;
}
/**
* 指定分辨率和清晰度的图片压缩方法
*
* @param fromFile
* @param toFile
* @param reqWidth
* @param reqHeight
* @param quality
*/
public static void transImage(String fromFile, String toFile, int reqWidth, int reqHeight, int quality) {
Bitmap bitmap = BitmapFactory.decodeFile(fromFile);
int bitmapWidth = bitmap.getWidth();
int bitmapHeight = bitmap.getHeight();
// 缩放的尺寸
float scaleWidth = (float) reqWidth / bitmapWidth;
float scaleHeight = (float) reqHeight / bitmapHeight;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
// 产生缩放后的Bitmap对象
Bitmap resizeBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmapWidth, bitmapHeight, matrix, false);
// 保存到文件
bitmap2File(toFile, quality, resizeBitmap);
if (!bitmap.isRecycled()) {
// 释放资源，以防止OOM
bitmap.recycle();
}
if (!resizeBitmap.isRecycled()) {
resizeBitmap.recycle();
}
}
/**
* Bitmap转换为文件
*
* @param toFile
* @param quality
* @param bitmap
* @return
*/
public static File bitmap2File(String toFile, int quality, Bitmap bitmap) {
File captureFile = new File(toFile);
FileOutputStream out = null;
try {
out = new FileOutputStream(captureFile);
if (bitmap.compress(Bitmap.CompressFormat.JPEG, quality, out)) {
out.flush();
out.close();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return captureFile;
}
/**
* Drawable转换为Bitmap
*
* @param drawable
* @return
*/
public static Bitmap drawableToBitamp(Drawable drawable) {
int w = drawable.getIntrinsicWidth();
int h = drawable.getIntrinsicHeight();
Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565;
Bitmap bitmap = Bitmap.createBitmap(w, h, config);
// 注意，下面三行代码要用到，否在在View或者surfaceview里的canvas.drawBitmap会看不到图
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, w, h);
drawable.draw(canvas);
return bitmap;
}
// Bitmap、Drawable、InputStream、byte[] 之间转换
// Bitmap 转 InputStream
public static InputStream bitmap2Input(Bitmap bitmap, int quality) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, quality, baos);
return new ByteArrayInputStream(baos.toByteArray());
}
public static InputStream bitmap2Input(Bitmap bitmap) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
return new ByteArrayInputStream(baos.toByteArray());
}
// Bitmap 转 byte[]
public static byte[] bitmap2ByteArray(Bitmap bitmap, int quality) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, quality, baos);
return baos.toByteArray();
}
public static byte[] bitmap2ByteArray(Bitmap bitmap) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
return baos.toByteArray();
}
// Drawable 转 byte[]
public static byte[] drawable2ByteArray(Drawable drawable) {
Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
ByteArrayOutputStream out = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
return out.toByteArray();
}
// byte[] 转 Bitmap
public static Bitmap byteArray2Bitmap(byte[] bytes) {
return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
}
}
