android.webkit.WebView#getHeight ( )源码实例Demo

/**
 * 规避 contentHeight 异步变化
 * @return
 */
private boolean canWebViewScrollUp(WebView webView) {
    if (mWebViewContentHeight == 0) {
        mWebViewContentHeight = (int) (webView.getContentHeight() * webView.getScale());
    }
    final int offset = webView.getScrollY();
    final int range = mWebViewContentHeight - webView.getHeight();
    if (range == 0) {
        return false;
    }
    return offset > 2;
}
 

/**
 * 规避 contentHeight 异步变化
 * @return
 */
private boolean canWebViewScrollDown(WebView webView) {
    if (mWebViewContentHeight == 0) {
        mWebViewContentHeight = (int) (webView.getContentHeight() * webView.getScale());
    }
    final int offset = webView.getScrollY();
    final int range = mWebViewContentHeight - webView.getHeight();
    if (range == 0) {
        return false;
    }
    return offset < range - 2;
}
 

/**
 * Returns true if the view is sufficiently shown
 *
 * @param view the view to check
 * @return true if the view is sufficiently shown
 */

public final boolean isWebElementSufficientlyShown(WebElement webElement){
	final WebView webView = viewFetcher.getFreshestView(viewFetcher.getCurrentViews(WebView.class, true));
	final int[] xyWebView = new int[2];

	if(webView != null && webElement != null){
		webView.getLocationOnScreen(xyWebView);

		if(xyWebView[1] + webView.getHeight() > webElement.getLocationY())
			return true;
	}
	return false;
}
 

private float convertWebViewToScreenY(float y) {
    if (ttsHost == null) {
        Log.w(TAG, "convertWebViewToScreenY() ttsHost is null");
        return 0;
    }

    WebView webView = ttsHost.getWebView();
    return y * webView.getHeight() / webView.getContentHeight();
}
 

public static boolean isWebViewToBottom(WebView webview, int mTouchSlop) {
    return webview != null && ((webview.getContentHeight() * webview.getScale() - (webview.getHeight() + webview.getScrollY())) <= 2 * mTouchSlop);
}
 

public static boolean isWebViewToBottom(WebView webview, int mTouchSlop) {
    return webview != null && ((webview.getContentHeight() * webview.getScale() - (webview.getHeight() + webview.getScrollY())) <= 2 * mTouchSlop);
}