安卓开发_实现截图功能

 1     /**
 2     * 获取和保存当前屏幕的截图
 3     */
 4     private void GetandSaveCurrentImage()  
 5     {  
 6     //构建Bitmap  
 7     WindowManager windowManager = getWindowManager();  
 8     Display display = windowManager.getDefaultDisplay();  
 9     int w = display.getWidth();  
10     int h = display.getHeight();  
11     Bitmap Bmp = Bitmap.createBitmap( w, h, Config.ARGB_8888 );      
12     //获取屏幕  
13     View decorview = this.getWindow().getDecorView();   
14     decorview.setDrawingCacheEnabled(true);   
15     Bmp = decorview.getDrawingCache();   
16     //图片存储路径
17     String SavePath = getSDCardPath()+"/qxbf/ScreenImages";  //这里是截图保存的路径
18     //保存Bitmap   
19     try {  
20     File path = new File(SavePath);  
21      Time time = new Time("GMT+8");     //这里求出了手机系统当前的时间，用来给截出的图片作为名字。否则名字相同，就只会产生一个图片，要想产生多个图片，便需要每个                                                 图片的名字不同，我就用最水的办法，用系统时间来命名了
22      time.setToNow();    
23      int year = time.year;    
24      int month = time.month;    
25      int day = time.monthDay;    
26      int minute = time.minute;    
27      int hour = time.hour;    
28      int sec = time.second; 
29     //文件  
30     String filepath = SavePath+"/" + year+month+day+minute+sec+".png";   //这里给图片命名  
31     File file = new File(filepath);  
32     if(!path.exists()){   //判断路径是否存在
33     path.mkdirs();  
34     }  
35     if (!file.exists()) {  
36     file.createNewFile();    
37     }  
38     FileOutputStream fos = null;  
39     fos = new FileOutputStream(file);  
40     if (null != fos) {  
41     Bmp.compress(Bitmap.CompressFormat.PNG, 90, fos);  
42     fos.flush();  
43     fos.close();    
44     Toast.makeText(Equip_pk_result.this, "截屏文件已保存至SDCard/qxbf/ScreenImages/目录下",Toast.LENGTH_LONG).show();  
45     }  
46     } catch (Exception e) {  
47     e.printStackTrace();  
48     }  
49     }  
50     /**
51     * 获取SDCard的目录路径功能
52     * @return
53     */
54     private String getSDCardPath(){
55     File sdcardDir = null;
56     //判断SDCard是否存在
57     boolean sdcardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);
58     if(sdcardExist){
59     sdcardDir = Environment.getExternalStorageDirectory();
60     }
61     return sdcardDir.toString();
62     

1 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>