如何從html文件中檢測div標簽？
[英]how to detect div tag from html file?
問題描述
我正在Web視圖中加載html頁面。 在html中有一個按鈕； 點擊后，我必須開始一個新活動。 我已經顯示了html文件，但是如何檢測按鈕的單擊？
按鈕的html代碼：為按鈕定義了單獨的css文件。
<div id="button">
<ul>
<li><a title="Forming a Habit" href="Forming_Habit.html">
More
<span class="arrows">
»
</span>
</a></li>
</ul>
</div>
加載html的代碼：
webView.setWebViewClient(new MyWebViewClient());
WebSettings webSetting = webView.getSettings();
webSetting.setJavaScriptEnabled(true);
webSetting.setPluginState(WebSettings.PluginState.ON_DEMAND);
//webSetting.setBuiltInZoomControls(true);
webSetting.setAllowContentAccess(true);
webSetting.setDefaultTextEncodingName("utf-8");
webView.loadUrl("file:///android_asset/"+htmlFile);
webViewClient類：
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
view.addJavascriptInterface(new Object(){
return true;
}
請指導我。
2 個解決方案
解決方案1
0 2015-01-29 11:55:03
用這個 ：
HTML：
<div id="button" onclick="Helper.methodeone()">
<ul>
<li><a title="Forming a Habit" href="Forming_Habit.html">
More
<span class="arrows">
»
</span>
</a></li>
</ul>
在java上：
webView.setWebViewClient(new MyWebViewClient());
WebSettings webSetting = webView.getSettings();
webSetting.setJavaScriptEnabled(true);
webSetting.setPluginState(WebSettings.PluginState.ON_DEMAND);
//webSetting.setBuiltInZoomControls(true);
webSetting.setAllowContentAccess(true);
web.addJavascriptInterface(new Samlplejavaconect(), "Helper");//NEW LINE
webSetting.setDefaultTextEncodingName("utf-8");
webView.loadUrl("file:///android_asset/"+htmlFile);
在下面的課程中，您可以管理活動：
public class Samlplejavaconect {
public void methodeone() {
Toast.makeText(this, "Hi", Toast.LENGTH_LONG).show();//FOR EXAMPLE
}
}
解決方案2
0 2015-01-29 12:11:50
嘗試這個
MainActivity.java
public class MainActivity extends Activity {
WebView webView;
JavaScriptInterface jsInterface;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView) findViewById(R.id.webView1);
WebSettings webSettings = webView.getSettings();
// enable JavaScript
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient() {
});
jsInterface = new JavaScriptInterface(MainActivity.this, webView);
webView.getSettings().setJavaScriptEnabled(true);
webView.addJavascriptInterface(jsInterface, "AndroidFunction");
webView.loadUrl("file:///android_asset/book.html");
}
public class JavaScriptInterface {
private Activity activity;
WebView wb;
public JavaScriptInterface(Activity activiy, WebView wb) {
this.activity = activiy;
this.wb = wb;
}
@JavascriptInterface
public void activity() {
try {
Class activity = Class.forName("com.example.classname");
Intent myIntent = new Intent(getApplicationContext(), activity);
startActivity(myIntent);
finish();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
}
book.html
<!DOCTYPE html>
<html>
<body>
<button type="button" onclick="startactivity()">Click Me!</button>
<script>
function startactivity() {
AndroidFunction.activity();
}
</script>
</body>
</html>
<a>從HTML數據中</a>檢測到點擊<a>標記？</a>
聲明:本站的技術帖子網頁，遵循CC BY-SA 4.0協議，如果您需要轉載，請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.