ddmlib在sdk tools\libs資料夾下  ddmlib.jar

AndroidDebugBridge.init(false) ;這句話需要呼叫，否則會報錯

import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;


import javax.imageio.ImageIO;


import com.android.ddmlib.AdbCommandRejectedException;
import com.android.ddmlib.AndroidDebugBridge;
import com.android.ddmlib.IDevice;
import com.android.ddmlib.RawImage;
import com.android.ddmlib.TimeoutException;




public class Main {


	private static void waitDeviceList(AndroidDebugBridge bridge) {   
	    int count = 0;   
	    while (bridge.hasInitialDeviceList() == false) {    
	       try {   
	       Thread.sleep(100); // 如果沒有獲得裝置列表，則等待   
	       count++;   
	       } catch (InterruptedException e) {}   
	       if (count > 300) {    // 設定時間超過300×100 ms的時候為連線超時   
	       System.err.print("Time out");   
	       break;   
	       }   
	    }   
	}  
	
	public static void main(String[] args) {
		IDevice device;   
		AndroidDebugBridge.init(false) ;
		AndroidDebugBridge bridge = AndroidDebugBridge.createBridge("E:\\android-sdk\\platform-tools\\adb.exe" , false);   
		waitDeviceList(bridge);   
		  
		IDevice devices[] = bridge.getDevices();   
		device = devices[0];
		try {
			RawImage rawScreen = device.getScreenshot() ;
			
			if (rawScreen != null) {
				Boolean landscape = false;
				int width2 = landscape ? rawScreen.height : rawScreen.width;
				int height2 = landscape ? rawScreen.width : rawScreen.height;
				BufferedImage image = null ;
				if (image == null) {
					image = new BufferedImage(width2, height2,
							BufferedImage.TYPE_INT_RGB);
				} else {
					if (image.getHeight() != height2 || image.getWidth() != width2) {
						image = new BufferedImage(width2, height2,
								BufferedImage.TYPE_INT_RGB);
					}
				}
				int index = 0;
				int indexInc = rawScreen.bpp >> 3;
				for (int y = 0; y < rawScreen.height; y++) {
					for (int x = 0; x < rawScreen.width; x++, index += indexInc) {
						int value = rawScreen.getARGB(index);
						if (landscape)
							image.setRGB(y, rawScreen.width - x - 1, value);
						else
							image.setRGB(x, y, value);
					}
				}
				try {


					ImageIO.write((RenderedImage) image, "PNG", new File("f:\\2.png"));
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			
		} catch (TimeoutException e) {
			e.printStackTrace();
		} catch (AdbCommandRejectedException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

下面是android上獲取截圖的辦法
https://github.com/Yhzhtk/note/issues/7

FileInputStream graphics = null;
            try {
                    graphics = new FileInputStream(“/dev/graphics/fb0”);
            } catch (FileNotFoundException e) {
                    e.printStackTrace();
                    return null;
            }

            DataInputStream dStream = new DataInputStream(graphics);
            dStream.readFully(piex);
            dStream.close();

            int[] colors = new int[screenHeight * screenWidth];
            // 將rgb轉為色值
            for (int m = 0; m < colors.length; m++) {
                    int r = (piex[m * 4] & 0xFF);
                    int g = (piex[m * 4 + 1] & 0xFF);
                    int b = (piex[m * 4 + 2] & 0xFF);
                    int a = (piex[m * 4 + 3] & 0xFF);
                    colors[m] = (a << 24) + (r << 16) + (g << 8) + b;
            }

            Bitmap bitmap = Bitmap.createBitmap(colors, screenWidth, screenHeight,
                            Bitmap.Config.ARGB_8888);