android webview将网页内容导出为图片和PDF方法

项目需求中需要把webview的网页内容导出为图片和PDF，方法如下

导出为PDF

注意: 该方法只能在API 19+可以使用

代码如下：

 public void printPDF() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            // Get a PrintManager instance
            PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);

            // Get a print adapter instance
            PrintDocumentAdapter printAdapter = webView.createPrintDocumentAdapter();

            // Create a print job with name and adapter instance
            String jobName = getString(R.string.app_name) + " Document";
            printManager.print(jobName, printAdapter,
                    new PrintAttributes.Builder().build());
        } else {
            Toast.makeText(getApplicationContext(), "当前系统不支持该功能", Toast.LENGTH_SHORT).show();
        }



    }

导出为图片

代码如下：

需要权限:
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

    /** * 保存图片 * * @param view */
    public void saveImage(View view) {
        Picture picture = webView.capturePicture();
        Bitmap b = Bitmap.createBitmap(
                picture.getWidth(), picture.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(b);
        picture.draw(c);
        File file = new File("/sdcard/" + "page.jpg");
        if(file.exists()){
            file.delete();
        }
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(file.getAbsoluteFile());
            if (fos != null) {
                b.compress(Bitmap.CompressFormat.JPEG, 90, fos);
                fos.close();
                Toast.makeText(getApplicationContext(), "保存成功", Toast.LENGTH_SHORT).show();
            }
        } catch (Exception e) {
            e.printStackTrace();
            Toast.makeText(getApplicationContext(), "保存失败", Toast.LENGTH_SHORT).show();
        }
    }

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