我正在寻找一种方法来检测的WebView是否完全缩小。我知道你可以从ZoomOut（）一个布尔返回值，但将进行缩小。我只是想简单地知道它是否可以。

I'm looking for a way to detect whether or not a WebView is zoomed out fully. I know you can get a boolean return value from ZoomOut(), but that will perform the zoom out. I just want to simply know whether or not it can.

推荐答案

我用我的自定义的WebView 类。

获取的WebView 的看法高度和内部HTML网页的或contentHeight 。

Get WebView's view height and inner html web page's contentHeight.

计算 defaultScale = WebView.getHeight（）/ WebView.getContentHeight（）; 和 currentScale = WebView.getScale（）。

如果 defaultScale ＆LT; currentScale 它放大。

If defaultScale < currentScale it's zoomed.

public class NoZoomControllWebView extends WebView {

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    @SuppressWarnings("deprecation")
    public boolean isZoomed () {
        boolean result = false;

        int contentHeight = getContentHeight();
        int viewHeight = getHeight();

        if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN_MR1 ) {
            float scale = getScale();
            int temp = (int)(((float)viewHeight / (float)contentHeight) * 100);

            if (temp < (int)(scale * 100)) {
                result = true;
            }
        } else {
            float scale = getScale();
            int temp = (int)(((float)viewHeight / (float)contentHeight) * 100);

            if (temp < (int)(scale * 100)) {
                result = true;
            }
        }

        return result;
    }
}