編輯:關於Android編程
本文實例講述了Android編程之截屏實現方法。分享給大家供大家參考,具體如下:
public class ScreenShot { // 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View View view = activity.getWindow().getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmap b1 = view.getDrawingCache(); // 獲取狀態欄高度 Rect frame = new Rect(); activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame); int statusBarHeight = frame.top; System.out.println(statusBarHeight); // 獲取屏幕長和高 int width = activity.getWindowManager().getDefaultDisplay().getWidth(); int height = activity.getWindowManager().getDefaultDisplay() .getHeight(); // 去掉標題欄 // 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對象轉換成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("這不是nullde1"); Log.d("nullde1", "nullde1"); } else { System.out.println("這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 operation int 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 view v.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; // 獲取listView實際高度 for (int i = 0; i < scrollView.getChildCount(); i++) { h += scrollView.getChildAt(i).getHeight(); scrollView.getChildAt(i).setBackgroundResource(R.drawable.bg3); } Log.d(TAG, "實際高度:" + h); Log.d(TAG, " 高度:" + scrollView.getHeight()); // 創建對應大小的bitmap bitmap = Bitmap.createBitmap(scrollView.getWidth(), h, Bitmap.Config.ARGB_8888); final Canvas canvas = new Canvas(bitmap); scrollView.draw(canvas); // 測試輸出 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 截圖:"; /** * 截圖listview * **/ public static Bitmap getbBitmap(ListView listView) { int h = 0; Bitmap bitmap = null; // 獲取listView實際高度 for (int i = 0; i < listView.getChildCount(); i++) { h += listView.getChildAt(i).getHeight(); } Log.d(TAG, "實際高度:" + h); Log.d(TAG, "list 高度:" + listView.getHeight()); // 創建對應大小的bitmap bitmap = Bitmap.createBitmap(listView.getWidth(), h, Bitmap.Config.ARGB_8888); final Canvas canvas = new Canvas(bitmap); listView.draw(canvas); // 測試輸出 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; } }
希望本文所述對大家Android程序設計有所幫助。
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