Android 使用WebView控件展示SVG图

1.添加布局界面代码：

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical" >

     <Button
         android:id="@+id/btnGetSVG"
         android:layout_width="120dp"
         android:layout_height="50dp"
         android:text="Getmage" />

     <WebView
         android:id="@+id/webView"
         android:layout_width="600dp"
         android:layout_height="400dp" />

 </LinearLayout>

2.添加java代码：

 package com.example.testdemo;

 import android.app.Activity;
 import android.os.Bundle;
 import android.os.Environment;
 import android.view.View;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.widget.Button;

 public class MainActivity extends Activity {

     private Button btnGetSVG;
     private WebView webView;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         btnGetSVG = (Button) findViewById(R.id.btnGetSVG);
         webView = (WebView) findViewById(R.id.webView);
         btnGetSVG.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 readHtmlFormAssets();
             }
         });

     }

     // 读取SVG文件方法
     private void readHtmlFormAssets() {
         WebSettings webSettings = webView.getSettings();
         webSettings.setLoadWithOverviewMode(true);
         webSettings.setJavaScriptEnabled(true);
         webSettings.setUseWideViewPort(true);
         webView.getSettings().setBuiltInZoomControls(true);// 会出现放大缩小的按钮
         webView.getSettings().setSupportZoom(true);
         webView.getSettings().setSupportMultipleWindows(true);
         webView.setInitialScale();

         try {
             // SVG图所在路径
             String svg_path = "file://"
                     + Environment.getExternalStorageDirectory()
                     + "/svg/115.svg";

             if (svg_path.contains("#")) {
                 svg_path = svg_path.replaceAll("#", "%23");
             }
             webView.loadUrl(svg_path);

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