android 嵌套webview，软键盘遮挡输入框

实际项目中，android需要加载h5，经常遇到软键盘遮盖输入框的情况，h5测试的时候，是没问题的，但是在APP中是不能把页面推上去。经测试完美解决了这个问题。

1. oncreate

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try {web();layoutParams = (ConstraintLayout.LayoutParams) webView.getLayoutParams();decorView = getActivity().getWindow().getDecorView();decorView = getActivity().getWindow().getDecorView();if (decorView != null) {globalLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {@Overridepublic void onGlobalLayout() {if (webView != null) {Rect rect = new Rect();decorView.getWindowVisibleDisplayFrame(rect);int screenHeight = decorView.getRootView().getHeight();int keyboardHeight = screenHeight - rect.bottom;if (currentHeight != keyboardHeight && keyboardHeight > 100) {currentHeight = keyboardHeight;ConstraintLayout.LayoutParams layoutParams = (ConstraintLayout.LayoutParams) webView.getLayoutParams();if (layoutParams != null) {layoutParams.bottomMargin = keyboardHeight;webView.setLayoutParams(layoutParams);}}}}};ViewTreeObserver viewTreeObserver = decorView.getViewTreeObserver();if (viewTreeObserver != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {viewTreeObserver.addOnGlobalLayoutListener(globalLayoutListener);}}} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}
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2. 不要忘记

onDestroyView 销毁资源

public void onDestroyView() {super.onDestroyView();if (webView != null) {webView.stopLoading();webView.clearCache(true);webView.clearHistory();webView.destroy(); // 注意：调用destroy()后，WebView实例就不能再使用了webView = null;}if (decorView != null && decorView.getViewTreeObserver() != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {decorView.getViewTreeObserver().removeOnGlobalLayoutListener(globalLayoutListener);}}

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