我正在 webView 中制作某种图书阅读器。我使用了 JavaScript,它<img>
通过 for 循环动态创建标签。查看代码的 for 循环,每个 img 标签都加载了来自 URL 的不同图像。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
wv = (WebView) findViewById(R.id.webView1);
wv.getSettings().setJavaScriptEnabled(true);
progressDialog = ProgressDialog.show(MainActivity.this,
"Loading Book...!", "Please Wait");
String htnlString = "<!DOCTYPE html><html><body style = \"text-align:center\"><script>var out = '';for (var counter = 1; counter <= 100; counter++){ out += '<img src=\"http://shiaislamicbooks.com/books_snaps/UR335/'+counter+'.jpg\"alt=\"Page No:'+counter+'\" width=\"100%\" />';}document.write(out);</script></body></html>";
wv.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
progressDialog.dismiss();
Toast.makeText(MainActivity.this, "Completed",
Toast.LENGTH_SHORT).show();
super.onPageFinished(view, url);
}
});
wv.loadDataWithBaseURL(null, htnlString, "text/html", "UTF-8", null);
}
看看htnlString
:
- 现在我想在 textView 中显示一本书的页面信息。这意味着,在滚动 webview 时,textView 应该更新 txtPage。
- 这
scrollTo(x,y)
是一些有用的,但我想要 webview 的滚动侦听器。