Android中截取当前屏幕的功能

   该篇文章是说明在Android手机或平板电脑中如何实现截取当前屏幕的功能，并把截取的屏幕保存到SDCard中的某个目录文件夹下面。实现的代码如下：

 /**    * 获取和保存当前屏幕的截图    */   private void GetandSaveCurrentImage()     {         //1.构建Bitmap         WindowManager windowManager = getWindowManager();         Display display = windowManager.getDefaultDisplay();         int w = display.getWidth();         int h = display.getHeight();                  Bitmap Bmp = Bitmap.createBitmap( w, h, Config.ARGB_8888 );                      //2.获取屏幕         View decorview = this.getWindow().getDecorView();          decorview.setDrawingCacheEnabled(true);          Bmp = decorview.getDrawingCache();                 String SavePath = getSDCardPath()+"/AndyDemo/ScreenImage";            //3.保存Bitmap          try {             File path = new File(SavePath);             //文件             String filepath = SavePath + "/Screen_1.png";             File file = new File(filepath);             if(!path.exists()){                 path.mkdirs();             }             if (!file.exists()) {                 file.createNewFile();             }                          FileOutputStream fos = null;             fos = new FileOutputStream(file);             if (null != fos) {                 Bmp.compress(Bitmap.CompressFormat.PNG, 90, fos);                 fos.flush();                 fos.close();                                    Toast.makeText(mContext, "截屏文件已保存至SDCard/AndyDemo/ScreenImage/下", Toast.LENGTH_LONG).show();             }              } catch (Exception e) {             e.printStackTrace();         }     }           /**       * 获取SDCard的目录路径功能       * @return       */   private String getSDCardPath(){    File sdcardDir = null;    //判断SDCard是否存在    boolean sdcardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);    if(sdcardExist){     sdcardDir = Environment.getExternalStorageDirectory();    }    return sdcardDir.toString();   }

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