Question

我正在尝试使用此代码更改webview的文本颜色

String message ="<font color='white'>"+"<u>"+
"text in white"+ "<br>" +
"<font color='cyan'>"+"<font size='2'>"+
" text in blue color "+"</font>";
webview.loadData(message, "text/html", "utf8");

但我有一些HTML页面。存储在我的SD卡中然后我如何更改文本颜色..

我用

webViewRead.loadUrl(url);

url是我文件的路径。

Answer 1

您必须像这样给出该文件的路径。

String extStorageDirectory = Environment.getExternalStorageDirectory()
                .toString() + "/folder_name";

File directory = new File(extStorageDirectory);
File fileInDirectory = new File(directory,file_name.html);

//Read text from file
StringBuilder html_text = new StringBuilder();

try {
    BufferedReader br = new BufferedReader(new FileReader(fileInDirectory));
    String line;

    while ((line = br.readLine()) != null) {
        html_text.append(line);
        html_text.append('\n');
    }
}
catch (IOException e) {
    //You'll need to add proper error handling here
}

然后使用此html代码进行编辑

String message ="<font color='white'>"+"<u>"+"text in white"+ "<br>" +"<font color='cyan'>"+"<font size='2'>"+" text in blue color "+"</font>"; 
 webview.loadData(message, "text/html", "utf8");

Answer 2

htmlDetail = dbValues.getContent(3);
        tvDescription3.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);

        String finalHtml = "<html><head>"
                  + "<style type=\"text/css\">li{color: #00f} span {color: #000}"
                  + "</style></head>"
                  + "<body>"                          
                  + htmlDetail
                  + "</body></html>";

    tvDescription3.loadData(finalHtml, "text/html; charset=UTF-8", null);

Answer 3

将您的文件路径设为

String htmlPath = "file:///mnt/sdcard/test/11.html"; 
String baseUrl = "file:///mnt/sdcard/test/"; 
webView.loadDataWithBaseURL(baseUrl, message, "text/html", "utf-8", null); 
webView.loadUrl(htmlPath);

Answer 4

要更改WebView的背景颜色，有一种标准方法：

mWebView.setBackgroundColor(Color.Black);

要更改WebView的文本字体颜色，没有标准方法：您可以通过html代码更改字体，也可以执行以下操作：

htmlData="<font color='black'>" + htmlData + "</font>";
mWebView.loadDataWithBaseURL(null, htmlData, "text/html", "UTF-8", null);

如何在android中设置webview的文本颜色

4 个答案: