用java代碼模擬一張圖片可以這樣操作:1.創(chuàng)建BufferedImage類

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2.根據(jù)BufferedImage類得到一個(gè)Graphics2D對(duì)象
3.根據(jù)Graphics2D對(duì)象進(jìn)行邏輯操作
4.處理繪圖
5.將繪制好的圖片寫(xiě)入到圖片
僅僅是給窗口添加背景的話是很簡(jiǎn)單的,添加上以下語(yǔ)句(自己去添加變量哈):\x0d\x0a\x0d\x0alabel = new JLabel(background); //background為ImageIcon\x0d\x0a// 把標(biāo)簽的大小位置設(shè)置為圖片剛好填充整個(gè)面板 \x0d\x0alabel.setBounds(0, 0, this.getWidth(), this.getHeight());\x0d\x0a//添加圖片到frame的第二層(把背景圖片添加到分層窗格的最底層作為背景)\x0d\x0athis.getLayeredPane().add(label,new Integer(Integer.MIN_VALUE));\x0d\x0a//把內(nèi)容窗格轉(zhuǎn)化為JPanel,否則不能用方法setOpaque()來(lái)使內(nèi)容窗格透明\x0d\x0ajPanel=(JPanel)this.getContentPane();\x0d\x0a//設(shè)置透明\x0d\x0ajPanel.setOpaque(false);\x0d\x0a\x0d\x0a然后你上面那個(gè)JPanel p也設(shè)置成透明就可以了
final ImageView iv=(ImageView)findViewById(R.id.iv);
Button bt=(Button)findViewById(R.id.bt);
bt.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View p1)
{
// TODO: Implement this method
if(iv.getDrawable()!=null)
iv.setImageResource(R.id.photo);
else iv.setImageResource(0);
}
});
直接給你一個(gè)類,直接套用就好了
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.WritableRaster;
import java.io.File;
import javax.imageio.ImageIO;
public class Resize {
BufferedImage bufImage;
int width;
int height;
public Resize() {
// TODO Auto-generated constructor stub
}
public Resize(String srcPath,int width,int height) {
this.width = width;
this.height = height;
try{
this.bufImage = ImageIO.read(new File(srcPath));
}catch(Exception e){
e.printStackTrace();
}
}
public static BufferedImage rize(BufferedImage srcBufImage,int width,int height){
BufferedImage bufTarget = null;
double sx = (double) width / srcBufImage.getWidth();
double sy = (double) height / srcBufImage.getHeight();
int type = srcBufImage.getType();
if(type == BufferedImage.TYPE_CUSTOM){
ColorModel cm = srcBufImage.getColorModel();
WritableRaster raster = cm.createCompatibleWritableRaster(width,
height);
boolean alphaPremultiplied = cm.isAlphaPremultiplied();
bufTarget = new BufferedImage(cm, raster, alphaPremultiplied, null);
}else
bufTarget = new BufferedImage(width, height, type);
Graphics2D g = bufTarget.createGraphics();
g.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
g.drawRenderedImage(srcBufImage, AffineTransform.getScaleInstance(sx, sy));
g.dispose();
return bufTarget;
}
}
文字水印
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.swing.*;
import com.sun.image.codec.jpeg.*;
public class WaterSet {
/**
* 給圖片添加水印
*
* @param filePath
* 需要添加水印的圖片的路徑
* @param markContent
* 水印的文字
* @param markContentColor
* 水印文字的顏色
* @param qualNum
* 圖片質(zhì)量
* @return
*/
public boolean createMark(String filePath, String markContent,
Color markContentColor, float qualNum) {
ImageIcon imgIcon = new ImageIcon(filePath);
Image theImg = imgIcon.getImage();
int width = theImg.getWidth(null);
int height = theImg.getHeight(null);
BufferedImage bimage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = bimage.createGraphics();
g.setColor(markContentColor);
g.setBackground(Color.white);
g.drawImage(theImg, 0, 0, null);
g.drawString(markContent, width / 5, height / 5); // 添加水印的文字和設(shè)置水印文字出現(xiàn)的內(nèi)容
g.dispose();
try {
FileOutputStream out = new FileOutputStream(filePath);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);
param.setQuality(qualNum, true);
encoder.encode(bimage, param);
out.close();
} catch (Exception e) {
return false;
}
return true;
}
}
圖片水印
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import javax.imageio.ImageIO;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public final class ImageUtils {
public ImageUtils() {
}
/*
* public final static String getPressImgPath() { return ApplicationContext
* .getRealPath("/template/data/util/shuiyin.gif"); }
*/
/**
* 把圖片印刷到圖片上
*
* @param pressImg --
* 水印文件
* @param targetImg --
* 目標(biāo)文件
* @param x
* --x坐標(biāo)
* @param y
* --y坐標(biāo)
*/
public final static void pressImage(String pressImg, String targetImg,
int x, int y) {
try {
//目標(biāo)文件
File _file = new File(targetImg);
Image src = ImageIO.read(_file);
int wideth = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(wideth, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = image.createGraphics();
g.drawImage(src, 0, 0, wideth, height, null);
//水印文件
File _filebiao = new File(pressImg);
Image src_biao = ImageIO.read(_filebiao);
int wideth_biao = src_biao.getWidth(null);
int height_biao = src_biao.getHeight(null);
g.drawImage(src_biao, (wideth - wideth_biao) / 2,
(height - height_biao) / 2, wideth_biao, height_biao, null);
//水印文件結(jié)束
g.dispose();
FileOutputStream out = new FileOutputStream(targetImg);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 打印文字水印圖片
*
* @param pressText
* --文字
* @param targetImg --
* 目標(biāo)圖片
* @param fontName --
* 字體名
* @param fontStyle --
* 字體樣式
* @param color --
* 字體顏色
* @param fontSize --
* 字體大小
* @param x --
* 偏移量
* @param y
*/
public static void pressText(String pressText, String targetImg,
String fontName, int fontStyle, int color, int fontSize, int x,
int y) {
try {
File _file = new File(targetImg);
Image src = ImageIO.read(_file);
int wideth = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(wideth, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = image.createGraphics();
g.drawImage(src, 0, 0, wideth, height, null);
// String s="";
g.setColor(Color.RED);
g.setFont(new Font(fontName, fontStyle, fontSize));
g.drawString(pressText, wideth - fontSize - x, height - fontSize
/ 2 - y);
g.dispose();
FileOutputStream out = new FileOutputStream(targetImg);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e) {
System.out.println(e);
}
}
public static void main(String[] args) {
pressImage("F:/logo.png", "F:/123.jpg", 0, 0);
}
}
正好寫(xiě)了一個(gè),給你看看哈
import?java.awt.*;
import?java.awt.image.BufferedImage;
import?java.io.File;
import?java.util.Date;
import?javax.imageio.ImageIO;
public?class?ScreenCapturer?{
public?static?void?main(String[]?args)?throws?Exception{
Date?date?=?new?Date();
Robot?rbt?=?new?Robot();
BufferedImage?bf?=??rbt.createScreenCapture(new?Rectangle(1440,900));??//這是屏幕分辨率??可以根據(jù)自己的屏幕修改
File?file?=?new?File("d://"+?date.toString().replace("?","").replace(":","")+".jpg");??//這是保存路徑D盤(pán)根目錄
ImageIO.write(bf,"jpg",file);
System.out.println("截圖成功!保存于D盤(pán)根目錄下!時(shí)間:"?+?date.toString());
}
}
分享題目:java簡(jiǎn)單圖片代碼 JAVA代碼圖片
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