package com.jiuqi.njt.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.media.ExifInterface;
import android.net.Uri;
import android.provider.MediaStore;
import android.provider.MediaStore.Audio.Media;
/**
*
* 图片操作工具类
* @author
*
*/
public final class ImageTools {
public static int computeSampleSize(BitmapFactory.Options options,
int minSideLength, int maxNumOfPixels) {
int initialSize = computeInitialSampleSize(options, minSideLength,
maxNumOfPixels);
int roundedSize;
if (initialSize <= 8) {
roundedSize = 1;
while (roundedSize < initialSize) {
roundedSize <<= 1;
}
} else {
roundedSize = (initialSize + 7) / 8 * 8;
}
return roundedSize;
}
private static int computeInitialSampleSize(BitmapFactory.Options options,
int minSideLength, int maxNumOfPixels) {
double w = options.outWidth;
double h = options.outHeight;
int lowerBound = (maxNumOfPixels == -1) ? 1 : (int) Math.ceil(Math
.sqrt(w * h / maxNumOfPixels));
int upperBound = (minSideLength == -1) ? 128 : (int) Math.min(
Math.floor(w / minSideLength), Math.floor(h / minSideLength));
if (upperBound < lowerBound) {
return lowerBound;
}
if ((maxNumOfPixels == -1) && (minSideLength == -1)) {
return 1;
} else if (minSideLength == -1) {
return lowerBound;
} else {
return upperBound;
}
}
/**
* Transfer drawable to bitmap
*
* @param drawable
* @return
*/
public static Bitmap drawableToBitmap(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);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, w, h);
drawable.draw(canvas);
return bitmap;
}
/**
* Bitmap to drawable
*
* @param bitmap
* @return
*/
public static Drawable bitmapToDrawable(Bitmap bitmap) {
return new BitmapDrawable(bitmap);
}
/**
* Input stream to bitmap
*
* @param inputStream
* @return
* @throws Exception
*/
public static Bitmap inputStreamToBitmap(InputStream inputStream)
throws Exception {
return BitmapFactory.decodeStream(inputStream);
}
/**
* Byte transfer to bitmap
*
* @param byteArray
* @return
*/
public static Bitmap byteToBitmap(byte[] byteArray) {
if (byteArray != null && byteArray.length != 0) {
return BitmapFactory
.decodeByteArray(byteArray, 0, byteArray.length);
} else {
return null;
}
}
/**
* Byte transfer to drawable
*
* @param byteArray
* @return
*/
public static Drawable byteToDrawable(byte[] byteArray) {
ByteArrayInputStream ins = null;
if (byteArray != null) {
ins = new ByteArrayInputStream(byteArray);
}
return Drawable.createFromStream(ins, null);
}
/**
* Bitmap transfer to bytes
*
* @param byteArray
* @return
*/
public static byte[] bitmapToBytes(Bitmap bm) {
byte[] bytes = null;
if (bm != null) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
bytes = baos.toByteArray();
}
return bytes;
}
/**
* Drawable transfer to bytes
*
* @param drawable
* @return
*/
public static byte[] drawableToBytes(Drawable drawable) {
BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
Bitmap bitmap = bitmapDrawable.getBitmap();
byte[] bytes = bitmapToBytes(bitmap);
;
return bytes;
}
/**
* Base64 to byte[] //
*/
// public static byte[] base64ToBytes(String base64) throws IOException {
// byte[] bytes = Base64.decode(base64);
// return bytes;
// }
//
// /**
// * Byte[] to base64
// */
// public static String bytesTobase64(byte[] bytes) {
// String base64 = Base64.encode(bytes);
// return base64;
// }
/**
* Create reflection images
*
* @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 = Bitmap.createBitmap(bitmap, 0, h / 2, w,
h / 2, matrix, false);
Bitmap bitmapWithReflection = Bitmap.createBitmap(w, (h + h / 2),
Config.ARGB_8888);
Canvas canvas = new Canvas(bitmapWithReflection);
canvas.drawBitmap(bitmap, 0, 0, null);
Paint deafalutPaint = new Paint();
canvas.drawRect(0, h, w, h + reflectionGap, deafalutPaint);
canvas.drawBitmap(reflectionImage, 0, h + reflectionGap, null);
Paint paint = new Paint();
LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0,
bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff,
0x00ffffff, TileMode.CLAMP);
paint.setShader(shader);
// Set the Transfer mode to be porter duff and destination in
paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
// Draw a rectangle using the paint with our linear gradient
canvas.drawRect(0, h, w, bitmapWithReflection.getHeight()
+ reflectionGap, paint);
return bitmapWithReflection;
}
/**
* Get rounded corner images
*
* @param bitmap
* @param roundPx
* 5 10
* @return
*/
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Bitmap output = Bitmap.createBitmap(w, h, 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(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
/**
* Resize the bitmap
*
* @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;
}
/**
* Resize the drawable
*
* @param drawable
* @param w
* @param h
* @return
*/
public static Drawable zoomDrawable(Drawable drawable, int w, int h) {
int width = drawable.getIntrinsicWidth();
int height = drawable.getIntrinsicHeight();
Bitmap oldbmp = drawableToBitmap(drawable);
Matrix matrix = new Matrix();
float sx = ((float) w / width);
float sy = ((float) h / height);
matrix.postScale(sx, sy);
Bitmap newbmp = Bitmap.createBitmap(oldbmp, 0, 0, width, height,
matrix, true);
return new BitmapDrawable(newbmp);
}
/**
* Get images from SD card by path and the name of image
*
* @param photoName
* @return
*/
public static Bitmap getPhotoFromSDCard(String path, String photoName) {
Bitmap photoBitmap = BitmapFactory.decodeFile(path + "/" + photoName
+ ".png");
if (photoBitmap == null) {
return null;
} else {
return photoBitmap;
}
}
/**
* Get images from SD card by path and the name of image
*
* @param photoName
* @return
*/
public static Bitmap getPhotoFromSDCard(String pathName) {
Bitmap photoBitmap = BitmapFactory.decodeFile(pathName);
if (photoBitmap == null) {
return null;
} else {
return photoBitmap;
}
}
/**
*
* Description: 保存图片 Title: saveBitmap
*
* @param bitmap
* @throws IOException
* void
*/
public static String saveBitmap(Bitmap bitmap, Context context)
throws IOException {
String imagePath_new = "";// 图片保存路径
SimpleDateFormat timeStampFormat = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
String filename = timeStampFormat.format(new Date());
ContentValues values = new ContentValues();
values.put(Media.TITLE, filename);
Uri photoUri = context.getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
imagePath_new = getRealPathFromURI(photoUri,
context.getContentResolver());
File file = new File(imagePath_new);
System.out.println("路径： " + imagePath_new);
FileOutputStream out;
try {
out = new FileOutputStream(file);
if (bitmap.compress(Bitmap.CompressFormat.JPEG, 80, out)) {
out.flush();
out.close();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
if (new File(imagePath_new).length() == 0) {
// 判断图片是否保存
imagePath_new = "";
}
return imagePath_new;
}
// 获得图片保存的路径
public static String getRealPathFromURI(Uri uri, ContentResolver resolver) {
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = resolver.query(uri, proj, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String str = cursor.getString(column_index);
cursor.close();
return str;
}
/**
* Check the SD card
*
* @return
*/
public static boolean checkSDCardAvailable() {
return android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED);
}
/**
* Get image from SD card by path and the name of image
*
* @param fileName
* @return
*/
public static boolean findPhotoFromSDCard(String path, String photoName) {
boolean flag = false;
if (checkSDCardAvailable()) {
File dir = new File(path);
if (dir.exists()) {
File folders = new File(path);
File photoFile[] = folders.listFiles();
for (int i = 0; i < photoFile.length; i++) {
String fileName = photoFile[i].getName().split("\\.")[0];
if (fileName.equals(photoName)) {
flag = true;
}
}
} else {
flag = false;
}
// File file = new File(path + "/" + photoName + ".jpg" );
// if (file.exists()) {
// flag = true;
// }else {
// flag = false;
// }
} else {
flag = false;
}
return flag;
}
/**
* Save image to the SD card
*
* @param photoBitmap
* @param photoName
* @param path
*/
public static void savePhotoToSDCard(Bitmap photoBitmap, String path,
String photoName) {
if (checkSDCardAvailable()) {
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
}
File photoFile = new File(path, photoName);
FileOutputStream fileOutputStream = null;
try {
fileOutputStream = new FileOutputStream(photoFile);
if (photoBitmap != null) {
if (photoBitmap.compress(Bitmap.CompressFormat.JPEG, 100,
fileOutputStream)) {
fileOutputStream.flush();
// fileOutputStream.close();
}
}
} catch (FileNotFoundException e) {
photoFile.delete();
e.printStackTrace();
} catch (IOException e) {
photoFile.delete();
e.printStackTrace();
} finally {
try {
fileOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* Delete the image from SD card
*
* @param context
* @param path
* file:///sdcard/temp.jpg
*/
public static void deleteAllPhoto(String path) {
if (checkSDCardAvailable()) {
File folder = new File(path);
File[] files = folder.listFiles();
for (int i = 0; i < files.length; i++) {
files[i].delete();
}
}
}
public static void deletePhoto(String filePath) {
File f = new File(filePath); // 输入要删除的文件位置
if (f.exists())
f.delete();
}
public static void deletePhotoAtPathAndName(String path, String fileName) {
if (checkSDCardAvailable()) {
File folder = new File(path);
File[] files = folder.listFiles();
for (int i = 0; i < files.length; i++) {
if (files[i].getName().split("\\.")[0].equals(fileName)) {
files[i].delete();
}
}
}
}
/**
* 根据图片实际角度,旋转图片
*
* @param photpath
* 图片实际路径
* @param bm
* 要旋转的图片
* @return
*/
public static Bitmap RotateBitmap(String photpath, Bitmap bm) {
ExifInterface exifInterface = null;
try {
exifInterface = new ExifInterface(photpath);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
int tag = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,
-1);
int degree = 0;
if (tag == ExifInterface.ORIENTATION_ROTATE_90) {
degree = 90;
} else if (tag == ExifInterface.ORIENTATION_ROTATE_180) {
degree = 180;
} else if (tag == ExifInterface.ORIENTATION_ROTATE_270) {
degree = 270;
}
return RotateBitmap(degree, bm);
}
/**
* 根据输入旋转角度,旋转图片
*
* @param degree
* 旋转角度
* @param bm
* 要旋转的图片
* @return
*/
public static Bitmap RotateBitmap(int degree, Bitmap bm) {
Matrix m = new Matrix();
if (degree != 0 && bm != null) {
m.setRotate(degree, (float) bm.getWidth() / 2,
(float) bm.getHeight() / 2);
}
// 旋转图片
Bitmap bmp = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(),
bm.getHeight(), m, true);
return bmp;
}
// Bitmap → byte[]
public static byte[] Bitmap2Bytes(Bitmap bm) {
if(bm==null){
return null;
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
return baos.toByteArray();
}
// byte[] → Bitmap
public static Bitmap Bytes2Bimap(byte[] b) {
if (b.length != 0) {
return BitmapFactory.decodeByteArray(b, 0, b.length);
} else {
return null;
}
}
}