android webview设置内容的字体大小

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;

/**

* 用来控制字体大小

*/

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;

}

/**

* 设置底部按钮的事件

*/

private void setImageViewClick() {

/**

* 缩小按钮

*/

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;

}

}

});

/**

* 放大按钮

*/

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, "");