android截取屏幕图

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.os.Environment;
import android.view.View;
//获取指定Activity的截屏，保存到png文件
public class ScreenShot {
	
	private static Bitmap takeScreenShot(Activity activity) {
		// View是你需要截图的View
		View view = activity.getWindow().getDecorView();
		view.setDrawingCacheEnabled(true);
		view.buildDrawingCache();
		Bitmap b1 = view.getDrawingCache();
		// 获取状态栏高度
		Rect frame = new Rect();
		activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
		int statusBarHeight = frame.top;
		System.out.println(statusBarHeight);
		// 获取屏幕长和高
		int width = activity.getWindowManager().getDefaultDisplay().getWidth();
		int height = activity.getWindowManager().getDefaultDisplay()
				.getHeight();
		// 去掉标题栏 //Bitmap b = Bitmap.createBitmap(b1, 0, 25, 320, 455);
		Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height
				- statusBarHeight);
		view.destroyDrawingCache();
		return b;
	} // 保存到sdcard

	private static void savePic(Bitmap b, String strFileName) {

		FileOutputStream fos = null;
		try {
			fos = new FileOutputStream(strFileName);
			if (null != fos) {
				b.compress(Bitmap.CompressFormat.PNG, 90, fos);
				fos.flush();
				fos.close();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 程序入口
	public static void shoot(Activity a) {
		ScreenShot.savePic(ScreenShot.takeScreenShot(a), Environment.getExternalStorageDirectory()+"/xx.png");
	}
}

 来源于网络