如何保存在web视图中显示的图像? [英] how to save images displayed in webview?
本文介绍了如何保存在web视图中显示的图像?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我要救显示的WebView到本地存储的图像和web视图应该缓存它显示的图像,我怎么能访问缓存图像,并将它们保存到存储?
解决方案
的WebView web视图=新的WebView(本);
//你的形象在web视图
画中画= webView.capturePicture();
帆布油画=新的Canvas();
picture.draw(画布);
位图图像= Bitmap.createBitmap(picture.getWidth()
picture.getHeight(),Config.ARGB_8888);
canvas.drawBitmap(mimage,0,0,NULL);
如果(图像!= NULL){
ByteArrayOutputStream mByteArrayOS =新
ByteArrayOutputStream();
image.com preSS(Bitmap.Com pressFormat.JPEG,90,mByteArrayOS);
尝试 {
FOS = openFileOutput(image.jpg文件,MODE_WORLD_WRITEABLE);
fos.write(mByteArrayOS.toByteArray());
fos.close();
}赶上(FileNotFoundException异常E){
e.printStackTrace();
}赶上(IOException异常E){
e.printStackTrace();
}
}
尝试上面从web视图捕获图像
I want to save the images displayed in webview into local storage, and webview should have cached the images it displays ,how can i access the cached images and save them into storage?
解决方案
WebView webView = new WebView(this);
//your image is in webview
Picture picture = webView.capturePicture();
Canvas canvas = new Canvas();
picture.draw(canvas);
Bitmap image = Bitmap.createBitmap(picture.getWidth(),
picture.getHeight(),Config.ARGB_8888);
canvas.drawBitmap(mimage, 0, 0, null);
if(image != null) {
ByteArrayOutputStream mByteArrayOS = new
ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 90, mByteArrayOS);
try {
fos = openFileOutput("image.jpg", MODE_WORLD_WRITEABLE);
fos.write(mByteArrayOS.toByteArray());
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
try the above to capture image from webView
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