ScreenShot获取指定Activity的截屏，保存到png文件

import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Rect;import android.util.Log;import android.view.View;import android.view.View.MeasureSpec;import android.widget.ListView;import android.widget.ScrollView;import com.csair.mbp.R;/** ** @author Alawn ** @Email [e-mail] * @createtime 2012-10-16 下午2:50:19 * @version 1.0 * @remark 截图类 */public class ScreenShot {// 获取指定Activity的截屏，保存到png文件public static Bitmap takeScreenShot(Activity activity) {// View是你需要截图的ViewView 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();savePic(b, "/sdcard/screen_test.png");return b;}// 保存到sdcardpublic 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();}}/** * 把View对象转换成bitmap * */public static Bitmap convertViewToBitmap(View view) {view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());view.buildDrawingCache();Bitmap bitmap = view.getDrawingCache();if (bitmap != null) {System.out.println("这不是nullde1");Log.d("nullde1", "nullde1");} else {System.out.println("这nullnulllnulnlul");}return bitmap;}// 程序入口1public static void shoot(Activity a) {ScreenShot.savePic(ScreenShot.takeScreenShot(a), "/sdcard/screen_test.png");}// 程序入口2public static void shootView(View view) {ScreenShot.savePic(ScreenShot.convertViewToBitmap(view),"sdcard/xx.png");}public static Bitmap getViewBitmap(View v) {v.clearFocus();v.setPressed(false);boolean willNotCache = v.willNotCacheDrawing();v.setWillNotCacheDrawing(false);// Reset the drawing cache background color to fully transparent// for the duration of this operationint color = v.getDrawingCacheBackgroundColor();v.setDrawingCacheBackgroundColor(0);if (color != 0) {v.destroyDrawingCache();}v.buildDrawingCache();Bitmap cacheBitmap = v.getDrawingCache();if (cacheBitmap == null) {Log.e("TTTTTTTTActivity", "failed getViewBitmap(" + v + ")",new RuntimeException());return null;}Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);// Restore the viewv.destroyDrawingCache();v.setWillNotCacheDrawing(willNotCache);v.setDrawingCacheBackgroundColor(color);return bitmap;}/** * 截取scrollview的屏幕 * **/public static Bitmap getBitmapByView(ScrollView scrollView) {int h = 0;Bitmap bitmap = null;// 获取listView实际高度for (int i = 0; i < scrollView.getChildCount(); i++) {h += scrollView.getChildAt(i).getHeight();scrollView.getChildAt(i).setBackgroundResource(R.drawable.bg2);}Log.d(TAG, "实际高度:" + h);Log.d(TAG, " 高度:" + scrollView.getHeight());// 创建对应大小的bitmapbitmap = Bitmap.createBitmap(scrollView.getWidth(), h,Bitmap.Config.ARGB_8888);final Canvas canvas = new Canvas(bitmap);scrollView.draw(canvas);// 测试输出FileOutputStream out = null;try {out = new FileOutputStream("/sdcard/screen_test.png");} catch (FileNotFoundException e) {e.printStackTrace();}try {if (null != out) {bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);out.flush();out.close();}} catch (IOException e) {// TODO: handle exception}return bitmap;}private static String TAG = "Listview and ScrollView item 截图:";/** * 截图listview * **/public static Bitmap getbBitmap(ListView listView) {int h = 0;Bitmap bitmap = null;// 获取listView实际高度for (int i = 0; i < listView.getChildCount(); i++) {h += listView.getChildAt(i).getHeight();}Log.d(TAG, "实际高度:" + h);Log.d(TAG, "list 高度:" + listView.getHeight());// 创建对应大小的bitmapbitmap = Bitmap.createBitmap(listView.getWidth(), h,Bitmap.Config.ARGB_8888);final Canvas canvas = new Canvas(bitmap);listView.draw(canvas);// 测试输出FileOutputStream out = null;try {out = new FileOutputStream("/sdcard/screen_test.png");} catch (FileNotFoundException e) {e.printStackTrace();}try {if (null != out) {bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);out.flush();out.close();}} catch (IOException e) {// TODO: handle exception}return bitmap;}}