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Android webview loadDataWithBaseURL如何從資產加載圖片?

[英]Android webview loadDataWithBaseURL how load images from assets?

在我的項目中,我有一個文件:

"MyProject/assets/folder1/image1.jpg"
"MyProject/assets/folder1/index.html".

在webView中我需要打開index.html(帶圖片)。

我嘗試這段代碼:

String baseUrl = "file:///android_asset/folder1/";
webView.loadDataWithBaseURL(baseUrl, readFileAsString("index.html") , mimeType, "UTF-8", null);

但圖像無法加載。

如果我將圖像放到“ assets ”目錄( MyProject/assets/ )並使baseUrl = "file:///android_asset"圖像正確加載;

如何從root資產目錄加載圖像,還是從assets/folder1加載圖像?

試試這樣

WebView webview = (WebView)this.findViewById(R.id.webview);


String html = "<html><head><title>TITLE!!!</title></head>";
html += "<body><h1>Image?</h1><img src=\"icon.png\" /></body></html>";


webview.loadDataWithBaseURL("file:///android_res/drawable/", html, "text/html", "UTF-8", null); 

有關更多信息,請嘗試此鏈接

完美的LoadDataWithBaseurl

我認為您必須將基礎設置為資源並將子文件夾添加到您的圖像src中,如下所示:

webView.loadDataWithBaseURL("file:///android_asset/", readAssetFileAsString("folder1/index.html"), "text/html", "UTF-8", null);

Html: <img src="folder1/image1.jpg">

這適用於Android 5.1

private String readAssetFileAsString(String sourceHtmlLocation)
{
    InputStream is;
    try
    {
        is = getContext().getAssets().open(sourceHtmlLocation);
        int size = is.available();

        byte[] buffer = new byte[size];
        is.read(buffer);
        is.close();

        return new String(buffer, "UTF-8");
    }
    catch(IOException e)
    {
        e.printStackTrace();
    }

    return "";
}

試着這樣

try {
            String filePath = null;
            filePath = "Your File path";
            Bitmap bitmap = null;

            bitmap = BitmapFactory.decodeFile(filePath);
            Log.v("Image data-->", "" + bitmap);
            imageWidth = bitmap.getWidth();
            imageHeight = bitmap.getHeight();
            Log.e("Width", "" + imageWidth);
            filePath = "file://" + filePath;
            String html = "<html xmlns=\"http://www.w3.org/1999/xhtml\"><head><meta http-equiv=\"Content-Type\" content=\"text/html\";charset=utf-8\"/><title></title></head><body style=\"width:"
                    + imageWidth
                    + "px; height:"
                    + imageHeight
                    + "px; background:url("
                    + filePath
                    + ") no-repeat; position:relative;\">"
                    + getDivTag(mapList)
                    + "</body></html>";

            Log.v("MIS", "" + html);
            webview.getSettings().setSupportZoom(true);
            webview.loadDataWithBaseURL(null, html, "text/html", "utf-8", null);

            System.out.println(html);

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

你有網絡許可嗎?

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

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