/** * 解决webView键盘遮挡问题的类 * Created by zqy on 2016/11/14. */ public class KeyBoardListener { private Activity activity; // private Handler mhanHandler; private View mChildOfContent; private int usableHeightPrevious; private FrameLayout.LayoutParams frameLayoutParams; private static KeyBoardListener keyBoardListener; public static KeyBoardListener getInstance(Activity activity) { // if(keyBoardListener==null){ keyBoardListener=new KeyBoardListener(activity); // } return keyBoardListener; } public KeyBoardListener(Activity activity) { super(); // TODO Auto-generated constructor stub this.activity = activity; // this.mhanHandler = handler; } public void init() { FrameLayout content = (FrameLayout) activity .findViewById(android.R.id.content); mChildOfContent = content.getChildAt(0); mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener( new ViewTreeObserver.OnGlobalLayoutListener() { public void onGlobalLayout() { possiblyResizeChildOfContent(); } }); frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent .getLayoutParams(); } private void possiblyResizeChildOfContent() { int usableHeightNow = computeUsableHeight(); if (usableHeightNow != usableHeightPrevious) { int usableHeightSansKeyboard = mChildOfContent.getRootView() .getHeight(); int heightDifference = usableHeightSansKeyboard - usableHeightNow; if (heightDifference > (usableHeightSansKeyboard / 4)) { // keyboard probably just became visible frameLayoutParams.height = usableHeightSansKeyboard - heightDifference; } else { // keyboard probably just became hidden frameLayoutParams.height = usableHeightSansKeyboard; } mChildOfContent.requestLayout(); usableHeightPrevious = usableHeightNow; } } private int computeUsableHeight() { Rect r = new Rect(); mChildOfContent.getWindowVisibleDisplayFrame(r); return (r.bottom - r.top); } } 调用方式为：
KeyBoardListener.getInstance(this).init();，即可解决全屏下，键盘遮挡问题。
