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在Android開發(fā)中，有時(shí)候會(huì)遇到需要截屏分享到朋友圈或者QQ，截屏有截取當(dāng)前屏幕，也有需要截取不僅一個(gè)屏幕，可能會(huì)很長(zhǎng)。

截取當(dāng)前屏幕并保存到內(nèi)存卡的方法：

// 獲取指定Activity的截屏，保存到png文件public static Bitmap takeScreenShot(Activity activity) {// View是你需要截圖的ViewView view = activity.getWindow().getDecorView();view.setDrawingCacheEnabled(true);view.buildDrawingCache();Bitmap b1 = view.getDrawingCache();// 獲取狀態(tài)欄高度Rect frame = new Rect();activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);int statusBarHeight = frame.top;System.out.println(statusBarHeight);// 獲取屏幕長(zhǎng)和高int width = activity.getWindowManager().getDefaultDisplay().getWidth();int height = activity.getWindowManager().getDefaultDisplay().getHeight();// 去掉標(biāo)題欄// 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();}}// 程序入口 截取當(dāng)前屏幕public static void shootLoacleView(Activity a,String picpath) {ScreenShot.savePic(ScreenShot.takeScreenShot(a), picpath);}

當(dāng)視圖超過(guò)一個(gè)屏幕的時(shí)候，可能是listview，也可能是Scrollview，這時(shí)候，其實(shí)截圖就是對(duì)listview或者Scrollview進(jìn)行截圖：

/*** 截取scrollview的屏幕* **/public static Bitmap getScrollViewBitmap(ScrollView scrollView,String picpath) {int h = 0;Bitmap bitmap;// 獲取listView實(shí)際高度f(wàn)or (int i = 0; i < scrollView.getChildCount(); i++) {h += scrollView.getChildAt(i).getHeight();}Log.d(TAG, "實(shí)際高度:" + h);Log.d(TAG, " 高度:" + scrollView.getHeight());// 創(chuàng)建對(duì)應(yīng)大小的bitmapbitmap = Bitmap.createBitmap(scrollView.getWidth(), h,Bitmap.Config.ARGB_8888);final Canvas canvas = new Canvas(bitmap);scrollView.draw(canvas);// 測(cè)試輸出FileOutputStream out = null;try {out = new FileOutputStream(picpath);} catch (FileNotFoundException e) {e.printStackTrace();}try {if (null != out) {bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);out.flush();out.close();}} catch (IOException e) {}return bitmap;}private static String TAG = "Listview and ScrollView item 截圖:";/*** 截圖listview* **/public static Bitmap getListViewBitmap(ListView listView,String picpath) {int h = 0;Bitmap bitmap;// 獲取listView實(shí)際高度f(wàn)or (int i = 0; i < listView.getChildCount(); i++) {h += listView.getChildAt(i).getHeight();}Log.d(TAG, "實(shí)際高度:" + h);Log.d(TAG, "list 高度:" + listView.getHeight());// 創(chuàng)建對(duì)應(yīng)大小的bitmapbitmap = Bitmap.createBitmap(listView.getWidth(), h,Bitmap.Config.ARGB_8888);final Canvas canvas = new Canvas(bitmap);listView.draw(canvas);// 測(cè)試輸出FileOutputStream out = null;try {out = new FileOutputStream(picpath);} catch (FileNotFoundException e) {e.printStackTrace();}try {if (null != out) {bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);out.flush();out.close();}} catch (IOException e) {}return bitmap;}// 程序入口 截取ScrollViewpublic static void shootScrollView(ScrollView scrollView,String picpath) {ScreenShot.savePic(getScrollViewBitmap(scrollView, picpath), picpath);}// 程序入口 截取ListViewpublic static void shootListView(ListView listView,String picpath) {ScreenShot.savePic(getListViewBitmap(listView,picpath), picpath);}

截長(zhǎng)圖的效果圖：? ??

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Demo在GitHub的地址：

https://github.com/Hebin320/ScreenShoot

Demo在CSDN上的下載地址：

http://download.csdn.net/detail/hebin320320/9721970

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