Android中截取当前屏幕图片

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();
 }

由于要对SDCard进行操作，所以别忘记了在manifest.xml文件中赋以对SDCard的读写权限：

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

出处:http://blog.csdn.net/cjjky/article/details/7281746