本文實例為大家分享了Android實現截屏與截長圖功能展示的具體代碼，供大家參考，具體內容如下
Demo在GitHub的地址：ScreenShoot
在Android開發中，有時候會遇到需要截屏分享到朋友圈或者QQ，截屏有截取當前屏幕，也有需要截取不僅一個屏幕，可能會很長。
截取當前屏幕并保存到內存卡的方法：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// 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(); 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 截取當前屏幕 public static void shootLoacleView(Activity a,String picpath) { ScreenShot.savePic(ScreenShot.takeScreenShot(a), picpath); } |
當視圖超過一個屏幕的時候，可能是listview，也可能是Scrollview，這時候，其實截圖就是對listview或者Scrollview進行截圖：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/** * 截取scrollview的屏幕 * **/public static Bitmap getScrollViewBitmap(ScrollView scrollView,String picpath) { int h = 0; Bitmap bitmap; // 獲取listView實際高度 for (int i = 0; i < scrollView.getChildCount(); i++) { h += scrollView.getChildAt(i).getHeight(); } 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(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(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);} |
截長圖的效果圖：
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/Hebin320320/article/details/51151746
