軟鍵盤遮擋住WebView中輸入框解決方法
阿新 • • 發佈:2018-12-29
專案中的登陸頁面是h5頁面,如下圖所示:
當輸入使用者資訊時,軟鍵盤遮擋了輸入框:
經過一番搜尋,其實這是Android本身的一個issue 5497的bug。
解決的方法
1、填坑的類AndroidBug5497Workaround:
/** * copy from https://www.jianshu.com/p/306482e17080 * Created by YuShuangPing on 2018/12/11. */ public class AndroidBug5497Workaround { // For more information, see https://code.google.com/p/android/issues/detail?id=5497 // To use this class, simply invoke assistActivity() on an Activity that already has its content view set. public static void assistActivity (Activity activity) { new AndroidBug5497Workaround(activity); } private View mChildOfContent; private int usableHeightPrevious; private FrameLayout.LayoutParams frameLayoutParams; private AndroidBug5497Workaround(Activity activity) { 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);// 全屏模式下: return r.bottom } }
2、Activity中使用也很簡單:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentVie(R.layout.activity_practise);
AndroidBug5497Workaround.assistActivity(this);
}
然後就能正常顯示了: