android截取系统当前屏幕

功能：截取当前屏幕，图片保存到SDCard某个目录下

 private String savePath;            //截屏后图片保存路劲

  /* (non-Javadoc)
     * @see app.ui.TitleActivity#onCreate(android.os.Bundle)
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_prize);
        savePath = getSDCardPath() + "/cut_photo";
    }



	/**
     * 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();
        // 3.保存Bitmap
        try {
            File path = new File(savePath);
            // 文件
            String filepath = savePath + "/screen.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(this, "截屏文件已保存至SDCard/AndyDemo/",Toast.LENGTH_LONG).show();
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 获取SDCard的目录路径功能
     */
    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();
    }

添加读写权限：

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