本文实例为大家分享了Android实现截屏与截长图功能展示的具体代码，供大家参考，具体内容如下
Demo在GitHub的地址：ScreenShoot
在Android开发中，有时候会遇到需要截屏分享到朋友圈或者QQ，截屏有截取当前屏幕，也有需要截取不仅一个屏幕，可能会很长。
截取当前屏幕并保存到内存卡的方法：
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// 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 public 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 截取当前屏幕 public static void shootLoacleView(Activity a,String picpath) { ScreenShot.savePic(ScreenShot.takeScreenShot(a), picpath); } |
当视图超过一个屏幕的时候，可能是listview，也可能是Scrollview，这时候，其实截图就是对listview或者Scrollview进行截图：
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/** * 截取scrollview的屏幕 * **/public static Bitmap getScrollViewBitmap(ScrollView scrollView,String picpath) { int h = 0; Bitmap bitmap; // 获取listView实际高度 for (int i = 0; i < scrollView.getChildCount(); i++) { h += scrollView.getChildAt(i).getHeight(); } Log.d(TAG, "实际高度:" + h); Log.d(TAG, " 高度:" + scrollView.getHeight()); // 创建对应大小的bitmap bitmap = 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(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 截图:";/** * 截图listview * **/public static Bitmap getListViewBitmap(ListView listView,String picpath) { int h = 0; Bitmap bitmap; // 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bitmap bitmap = 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(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);} |
截长图的效果图：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/Hebin320320/article/details/51151746
