android webview設置內容的字體大小

本文轉載自查看原文 2012-06-14 10:25 40701 android

Enum for specifying the text size. SMALLEST is 50% SMALLER is 75% NORMAL is 100% LARGER is 150% LARGEST is 200%

/* *
  * webview
   */
WebView wv;
/* *
  * Manages settings state for a WebView
   */
WebSettings settings;
/* *
  * 用來控制字體大小
   */
int fontSize = 1;

wv = (WebView) findViewById(R.id.webViewContent);
  settings = wv.getSettings();
  settings.setSupportZoom( true);

if (settings.getTextSize() == WebSettings.TextSize.SMALLEST) {
   fontSize = 1;
  } else if (settings.getTextSize() == WebSettings.TextSize.SMALLER) {
   fontSize = 2;
  } else if (settings.getTextSize() == WebSettings.TextSize.NORMAL) {
   fontSize = 3;
  } else if (settings.getTextSize() == WebSettings.TextSize.LARGER) {
   fontSize = 4;
  } else if (settings.getTextSize() == WebSettings.TextSize.LARGEST) {
   fontSize = 5;
  }

/* *
     * 設置底部按鈕的事件
      */
     private void setImageViewClick() {

         /* *
         * 縮小按鈕
          */
        imgViewSX.setOnClickListener( new OnClickListener() {

            @Override
             public void onClick(View v) {

                fontSize--;

                 if (fontSize < 0) {
                    fontSize = 1;
                }
                 switch (fontSize) {

                 case 1:
                    settings.setTextSize(WebSettings.TextSize.SMALLEST);
                     break;
                 case 2:
                    settings.setTextSize(WebSettings.TextSize.SMALLER);
                     break;
                 case 3:
                    settings.setTextSize(WebSettings.TextSize.NORMAL);
                     break;
                 case 4:
                    settings.setTextSize(WebSettings.TextSize.LARGER);
                     break;
                 case 5:
                    settings.setTextSize(WebSettings.TextSize.LARGEST);
                     break;
                }

            }
        });

         /* *
         * 放大按鈕
          */
        imgViewFD.setOnClickListener( new OnClickListener() {

            @Override
             public void onClick(View v) {

                fontSize++;

                 if (fontSize > 5) {
                    fontSize = 5;
                }
                 switch (fontSize) {

                 case 1:
                    settings.setTextSize(WebSettings.TextSize.SMALLEST);
                     break;
                 case 2:
                    settings.setTextSize(WebSettings.TextSize.SMALLER);
                     break;
                 case 3:
                    settings.setTextSize(WebSettings.TextSize.NORMAL);
                     break;
                 case 4:
                    settings.setTextSize(WebSettings.TextSize.LARGER);
                     break;
                 case 5:
                    settings.setTextSize(WebSettings.TextSize.LARGEST);
                     break;
                }
            }
        });

final String mimeType = " text/html ";
        final String encoding = " UTF-8 ";

content = getContentFromNewWork(newsId);
wv.loadDataWithBaseURL( "", content, mimeType, encoding, "");

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