问题描述

在webview中Html Anchor Link只能执行一次

我用anchor link加载html内容时，在webview中遇到一些奇怪的问题。
以下代码对于 anchor标签可以很好的执行，但是只能执行一次。
当我再次点击 anchor标签时，就不能执行。

protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.mywebview);        String html = ""<html><body><p><a href='#C4'>See also Chapter 4</a></p><p><h2>Chapter 1</h2><p>This chapter explains ba bla bla</p><h2>Chapter 2</h2><p>This chapter explains ba bla bla</p><h2>Chapter 3</h2><p>This chapter explains ba bla bla</p><h2><a name='C4'>Chapter 4</a></h2><p>This chapter explains ba bla bla</p><h2>Chapter 5</h2><p>This chapter explains ba bla bla</p><h2>Chapter 6</h2><p>This chapter explains ba bla bla</p><h2>Chapter 7</h2><p>This chapter explains ba bla bla</p><h2>Chapter 8</h2><p>This chapter explains ba bla bla</p><h2>Chapter 9</h2><p>This chapter explains ba bla bla</p></body></html>"";        String mime = ""text/html"";        String encoding = ""utf-8"";        WebView myWebView = (WebView)this.findViewById(R.id.webView1);        myWebView.loadDataWithBaseURL(null html mime encoding null);    }

我在不同的设备装置中测试代码。
可以执行：
1. Samsung S Plus --> 2.3.4
2. Samsung Galaxy Y --> 2.3.6
3. Samsung Galaxy Tab --> 2.3.3
4. Motorola Xoom --> 3.2

不能执行：
1. LG Optimus --> 2.2
2. DELL XCD35(ZTE Blade) --> 2.2
3. HTC WildFire --> 2.2.1

这是操作系统的问题还是别的问题? 如何解决呢？

解决方案

问题是想点击Anchor链接后重新加载页面。
Assets文件夹中的chapters.xml

<html><body><p><a href=""#C4"">See also Chapter 4</a></p><p><h2><a name='C1'>Chapter 1<a></h2><p>This chapter explains ba bla bla</p><h2>Chapter 2</h2><p>This chapter explains ba bla bla</p><h2>Chapter 3</h2><p>This chapter explains ba bla bla</p><h2><a name='C4'>Chapter 4</a></h2><p>This chapter explains ba bla bla</p><h2>Chapter 5</h2><p>This chapter explains ba bla bla</p><h2>Chapter 6</h2><p>This chapter explains ba bla bla</p><h2>Chapter 7</h2><p>This chapter explains ba bla bla</p><a href=""#C1"">See also Chapter 1</a></body></html>

方法一：JAVA

public class MainActivity extends Activity {    WebView myWebView;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        myWebView = new WebView(this);        myWebView.getSettings().setJavaScriptEnabled(true);        myWebView.loadUrl(""file:///android_asset/chapters.html"");        setContentView(myWebView);        final GestureDetector gestureDetector = new GestureDetector(                new MyGestureDetector());        View.OnTouchListener gestureListener = new View.OnTouchListener() {            public boolean onTouch(View v MotionEvent event) {                return gestureDetector.onTouchEvent(event);            }        };        myWebView.setOnTouchListener(gestureListener);    }    class MyGestureDetector extends SimpleOnGestureListener {        @Override        public boolean onSingleTapConfirmed(MotionEvent e) {            myWebView.reload();            Log.i(""""Reload"");            return super.onSingleTapConfirmed(e);        }    }}

方法二：JAVA
是用下面代码代替onTouchListener

public class MainActivity extends Activity {    WebView myWebView;    public static boolean flag = false;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        myWebView = new WebView(this);        myWebView.getSettings().setJavaScriptEnabled(true);        myWebView.loadUrl(""file:///android_asset/chapters.html"");        setContentView(myWebView);        myWebView.setWebViewClient(new WebViewClient() {            public void onPageFinished(WebView view String url) {                if (url.contains(""#"") && flag == false) {                    myWebView.loadUrl(url);                    flag = true;                } else {                    flag = false;                }            }        });    }}

解决方案二：

String html = ""<html><body><p><a href='#C4'>See also Chapter 4</a></p><p><h2>Chapter 1</h2><p>This chapter explains ba bla bla</p><h2>Chapter 2</h2><p>This chapter explains ba bla bla</p><h2>Chapter 3</h2><p>This chapter explains ba bla bla</p><h2><a name='C4'>Chapter 4</a></h2><p>This chapter explains ba bla bla</p><h2>Chapter 5</h2><p>This chapter explains ba bla bla</p><h2>Chapter 6</h2><p>This chapter explains ba bla bla</p><h2>Chapter 7</h2><p>This chapter explains ba bla bla</p><h2>Chapter 8</h2><p>This chapter explains ba bla bla</p><h2>Chapter 9</h2><p>This chapter explains ba bla bla</p></body></html>"";    String mime = ""text/html"";    String encoding = ""utf-8"";    final WebView myWebView = (WebView)this.findViewById(R.id.webView);    myWebView.getSettings().setJavaScriptEnabled(true);    myWebView.loadDataWithBaseURL(""app:html"" html mime encoding null);    myWebView.setWebViewClient(new WebViewClient()     {         @Override         public void onPageFinished(WebView view String url)        {           super.onPageFinished(viewapp:html"");           view.loadDataWithBaseURL(""app:html"" html mime encoding null);       }      });

使用这段代码，能实现你想要的功能。