/**
* webview 显示本地图片，自适应布局大小，图片可缩放
*
* @param mContext
* @param webview
* @param imageLocalUrl
* @param isAdapterScreenWidth 是否自适应屏幕宽度
* @param color 0-255
*/
public static void showLocalImage(
Context mContext,
final WebView webview,
final String imageLocalUrl,
int color,
boolean isAdapterScreenWidth,
boolean doubleClickEabled) {
boolean fileExist = FileUtils.isExists(imageLocalUrl);
if (fileExist) {
String bgcolor = ColorUtils.toBrowserColor(color);
ZogUtils.printLog(WebViewUtils.class, "bgcolor:" + bgcolor);
String adapterScreenWidth = "";
if (isAdapterScreenWidth) {
adapterScreenWidth = " width:99.9%;";
}
String style =
"<style>"
+ "* { margin:0; padding:0; background-color:"
+ bgcolor
+ "; }"
+ "img { "
+ adapterScreenWidth
+ " margin:0; padding:0; }"
+ "div{"
+ adapterScreenWidth
+
// " border: thin solid #F00;" +
" margin:0; padding:0;"
+ " }/*这里的width height 大于图片的宽高*/"
+ "table{ height:100%; width:100%; text-align:center;}"
+ " </style>";
String body =
" <body>"
+ " <div>"
+ " <table>"
+ " <tr>"
+ " <td>"
+ " <img src=\"file://"
+ imageLocalUrl
+ "\""
+
// " width=" + width +
" margin="
+ 0
+ " padding="
+ 0
+
// " height="+height+
" />"
+ " </td>"
+ " </tr>"
+ " </table>"
+ " </div>"
+ " </body>"
+ "";
String data = style + body;
webview.loadDataWithBaseURL("file://" + imageLocalUrl, data, "text/html", "utf-8", null);
// webview.loadUrl(imageUrl);//直接显示网上图片
webview.setVerticalScrollBarEnabled(false); // 取消Vertical ScrollBar显示
webview.setHorizontalScrollBarEnabled(false); // 取消Horizontal ScrollBar显示
webview.getSettings().setBuiltInZoomControls(true); // 显示放大缩小 controler
webview.getSettings().setSupportZoom(true); // 可以缩放
setZoomControlGone(webview); // 去掉zoom按钮
if (doubleClickEabled) { // 双击缩放
webview.getSettings().setUseWideViewPort(true);
webview.getSettings().setLoadWithOverviewMode(true);
}
webview.setSaveEnabled(true);
}
}
