Android WebView viewport
With html below I expected that the green rectangle would occupy only half of the screen, but in practice it occupies the whole screen width. I tried other values for viewport width, no luck. Any id开发者_运维技巧eas why it does not work?
Html
<html>
<head>
<meta name="viewport" content="width=640" />
</head>
<body>
<div style="width: 300px; height: 50px; background: green;">300px</div>
<div style="width: 600px; height: 50px; background: yellow;">600px</div>
</body>
</html>
Xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<WebView
android:id="@+id/web_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
I had the same question and found answer!
In your case you need:
WebSettings settings = webView.getSettings();
settings.setUseWideViewPort(true);
settings.setLoadWithOverviewMode(true);
Partially solved, now I can scale by double tap:
webView.getSettings().setUseWideViewPort(true);
EDIT: No, I was wrong... I changed the test html, and found that it scales to page width - 1000px, and not to the viewport width - 640px.
<div style="width: 300px; height: 50px; background: green;">300px</div>
<div style="width: 600px; height: 50px; background: yellow;">600px</div>
<div style="width: 1000px; height: 50px; background: red;">1000px</div>
加载中,请稍侯......
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