实现截屏并存储在本地

public class ScreenShot {
    public static String screenShotFolderPath = Environment.getExternalStorageDirectory() + "/Pictures" + "/ScreenShots";
    public static String screenShotFilePath =screenShotFolderPath + "/TMFeedbackScreenshot.png";
    public static Bitmap screenshotBitmap = null;

    public static void shoot(Activity a) {
        screenshotBitmap = takeScreenShot(a);
        screenShotFilePath=screenShotFolderPath+ "/"+getCurrentTime()+".png";
    }



    public static void shootToFile(Activity a, File filePath) {
        if (filePath == null) {
            return;
        }
        if (!filePath.getParentFile().exists()) {
            filePath.getParentFile().mkdirs();
        }
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(filePath);
            if (null != fos) {
                takeScreenShot(a).compress(Bitmap.CompressFormat.PNG, 100, fos);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (fos != null) {
                try {
                    fos.flush();
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private static Bitmap takeScreenShot(Activity activity) {
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap bitmap = view.getDrawingCache();
        Bitmap b = Bitmap.createBitmap(bitmap);
        view.destroyDrawingCache();
        return b;
    }

    private static String getCurrentTime() {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
        Date curDate = new Date(System.currentTimeMillis());//获取当前时间
        String str = formatter.format(curDate);
        return str;
    }


}