如何采取的WebView的截屏的Andr​​oid [英] How to take screenshot of webview in Android

问题描述

我得出的WebView内对HTML5画布一些线条和尝试使用以下code采取的WebView的截图...

I have drawn some lines on html5 canvas within webview and tried to take screenshot of the webview using below code...

WebView webView = (WebView) findViewById(R.id.webview);
webView.setDrawingCacheEnabled(true);
Bitmap screenshot = Bitmap.createBitmap(webView.getDrawingCache());
webView.setDrawingCacheEnabled(false);
File myFile = new File(Environment.getExternalStorageDirectory().getPath()+ "/myfolder");
if(!myFile.exists()) {
    myFile.mkdir();
}
imagePath = myFile.getAbsolutePath() + "/myimage001.png";
FileOutputStream fos = null;
try {
    fos = new FileOutputStream(imagePath);
    if ( fos != null ) {
        screenshot.compress(Bitmap.CompressFormat.PNG, 100, fos);
        fos.close();
    }
} catch( Exception e ) {
    e.printStackTrace();
}

但是，当我打开图像，然后它看起来是空的。请帮忙。

But when I open that image then it looks empty. Please help.

推荐答案

执行如下：

private void TakeScreenshot()
{
 Picture picture = webview.capturePicture();
                    Bitmap  b = Bitmap.createBitmap( picture.getWidth(),
                    picture.getHeight(), Bitmap.Config.ARGB_8888);
                    Canvas c = new Canvas( b );

                    picture.draw( c );
                    FileOutputStream fos = null;
                    try {

                        fos = new FileOutputStream( "mnt/sdcard/yahoo.jpg" );
                            if ( fos != null )
                            {
                                b.compress(Bitmap.CompressFormat.JPEG, 100, fos);

                                fos.close();
                            }
                        }
                   catch( Exception e )
                   {

                   }
}

N.B：乘坐的WebView 完成加载，否则你会得到一个空白屏幕后，屏幕截图

N.B: Take the screenshot after the WebView finishes loading otherwise you will get a blank screen.

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