本文实例讲述了Android编程之截屏实现方法。分享给大家供大家参考,具体如下:
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();} } /*** 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1 public static void shoot(Activity a) {ScreenShot.savePic(ScreenShot.takeScreenShot(a), "/sdcard/screen_test.png"); } // 程序入口2 public 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.bg3);}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; }}
希望本文所述对大家Android程序设计有所帮助。