package com.diandi.demo.util;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.media.ExifInterface;
import android.media.ThumbnailUtils;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
/**
* *******************************************************************************
* ********* Author : klob(kloblic@gmail.com) .
* ********* Date : 2014-11-29 .
* ********* Time : 11:46 .
* ********* Project name : Diandi1.18 .
* ********* Version : 1.0
* ********* Copyright @ 2014, klob, All Rights Reserved
* *******************************************************************************
*/
public class PhotoUtil {
/**
* 回收垃圾 recycle
*
* @throws
*/
public static void recycle(Bitmap bitmap) {
// 先判断是否已经回收
if (bitmap != null && !bitmap.isRecycled()) {
// 回收并且置为null
bitmap.recycle();
bitmap = null;
}
System.gc();
}
/**
* 获取指定路径下的图片的指定大小的缩略图 getImageThumbnail
*
* @return Bitmap
* @throws
*/
public static Bitmap getImageThumbnail(String imagePath, int width,
int height) {
Bitmap bitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
// 获取这个图片的宽和高，注意此处的bitmap为null
bitmap = BitmapFactory.decodeFile(imagePath, options);
options.inJustDecodeBounds = false; // 设为 false
// 计算缩放比
int h = options.outHeight;
int w = options.outWidth;
int beWidth = w / width;
int beHeight = h / height;
int be = 1;
if (beWidth < beHeight) {
be = beWidth;
} else {
be = beHeight;
}
if (be <= 0) {
be = 1;
}
options.inSampleSize = be;
// 重新读入图片，读取缩放后的bitmap，注意这次要把options.inJustDecodeBounds 设为 false
bitmap = BitmapFactory.decodeFile(imagePath, options);
// 利用ThumbnailUtils来创建缩略图，这里要指定要缩放哪个Bitmap对象
bitmap = ThumbnailUtils.extractThumbnail(bitmap, width, height,
ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
return bitmap;
}
/**
* saveBitmap
*
* @param @param filename---完整的路径格式-包含目录以及文件名
* @param @param bitmap
* @param @param isDelete --是否只留一张
* @return void
* @throws
*/
public static void saveBitmap(String dirpath, String filename,
Bitmap bitmap, boolean isDelete) {
File dir = new File(dirpath);
if (!dir.exists()) {
dir.mkdirs();
}
File file = new File(dirpath, filename);
// 若存在即删除-默认只保留一张
if (isDelete) {
if (file.exists()) {
file.delete();
}
}
if (!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
FileOutputStream out = null;
try {
out = new FileOutputStream(file);
if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, out)) {
out.flush();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static File getFilePath(String filePath, String fileName) {
File file = null;
makeRootDirectory(filePath);
try {
file = new File(filePath + fileName);
if (!file.exists()) {
file.createNewFile();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return file;
}
public static void makeRootDirectory(String filePath) {
File file = null;
try {
file = new File(filePath);
if (!file.exists()) {
file.mkdirs();
}
} catch (Exception e) {
}
}
/**
* 读取图片属性：旋转的角度
*
* @param path 图片绝对路径
* @return degree旋转的角度
*/
public static int readPictureDegree(String path) {
int degree = 0;
try {
ExifInterface exifInterface = new ExifInterface(path);
int orientation = exifInterface.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
degree = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
degree = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
degree = 270;
break;
}
} catch (IOException e) {
e.printStackTrace();
}
return degree;
}
/**
* 旋转图片一定角度
* rotaingImageView
*
* @return Bitmap
* @throws
*/
public static Bitmap rotaingImageView(int angle, Bitmap bitmap) {
// 旋转图片 动作
Matrix matrix = new Matrix();
matrix.postRotate(angle);
// 创建新的图片
Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), matrix, true);
return resizedBitmap;
}
/**
* 将图片变为圆角
*
* @param bitmap 原Bitmap图片
* @param pixels 图片圆角的弧度(单位:像素(px))
* @return 带有圆角的图片(Bitmap 类型)
*/
public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = pixels;
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;
}
/**
* 将图片转化为圆形头像
*
* @throws
* @Title: toRoundBitmap
*/
public static Bitmap toRoundBitmap(Bitmap bitmap) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
float roundPx;
float left, top, right, bottom, dst_left, dst_top, dst_right, dst_bottom;
if (width <= height) {
roundPx = width / 2;
left = 0;
top = 0;
right = width;
bottom = width;
height = width;
dst_left = 0;
dst_top = 0;
dst_right = width;
dst_bottom = width;
} else {
roundPx = height / 2;
float clip = (width - height) / 2;
left = clip;
right = width - clip;
top = 0;
bottom = height;
width = height;
dst_left = 0;
dst_top = 0;
dst_right = height;
dst_bottom = height;
}
Bitmap output = Bitmap.createBitmap(width, height, Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final Paint paint = new Paint();
final Rect src = new Rect((int) left, (int) top, (int) right,
(int) bottom);
final Rect dst = new Rect((int) dst_left, (int) dst_top,
(int) dst_right, (int) dst_bottom);
final RectF rectF = new RectF(dst);
paint.setAntiAlias(true);// 设置画笔无锯齿
canvas.drawARGB(0, 0, 0, 0); // 填充整个Canvas
// 以下有两种方法画圆,drawRounRect和drawCircle
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);// 画圆角矩形，第一个参数为图形显示区域，第二个参数和第三个参数分别是水平圆角半径和垂直圆角半径。
// canvas.drawCircle(roundPx, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));// 设置两张图片相交时的模式,参考http://trylovecatch.iteye.com/blog/1189452
canvas.drawBitmap(bitmap, src, dst, paint); // 以Mode.SRC_IN模式合并bitmap和已经draw了的Circle
return output;
}
}