Question

我使用HTML网站加载WebView，但是当用户单击TextBox时，它隐藏在键盘下面。那么对此有何建议？

Answer 1

Staus Bar Present

如果您的活动不是全屏活动，则可以使用android:windowSoftInputMode="adjustResize"或 android:windowSoftInputMode="adjustPan" 在您的AndroidManifest.xml中实现这一目标。

用于全屏活动

第一种方法不适用于全屏活动。因此使用必须创建一个实用程序手动执行此操作的课程

创建公共类 WindowResize.java

public  class WindowResize{
   public static void assistActivity(Activity activity) {
    new WindowResize(activity);
   }

   private View mChildOfContent;
   private int usableHeightPrevious;
   private FrameLayout.LayoutParams frameLayoutParams;

   private WindowResize(final Activity activity) {
    FrameLayout content = activity.findViewById(android.R.id.content);
    mChildOfContent = content.getChildAt(0);
    mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        public void onGlobalLayout() {
            possiblyResizeChildOfContent(activity);
        }
    });
    frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
   }

  private void possiblyResizeChildOfContent(Activity activity) {
    //Visible height
    int usableHeightNow = computeUsableHeight();
    if (usableHeightNow != usableHeightPrevious) {
        //Total window size. We have to decrement the SoftNavigation button height from total height if there any
        int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight() - getNavigationButtonHeight(activity);
        int heightDifference = usableHeightSansKeyboard - usableHeightNow;
        if (heightDifference > (usableHeightSansKeyboard / 4)) {
            // keyboard  visible
            frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
        } else {
            // keyboard  hidden
            frameLayoutParams.height = usableHeightSansKeyboard;
        }
        mChildOfContent.requestLayout();
        usableHeightPrevious = usableHeightNow;
      }
    }

  //Usable height in current window.
  private int computeUsableHeight() {
    Rect r = new Rect();
    mChildOfContent.getWindowVisibleDisplayFrame(r);
    return (r.bottom - r.top);
  }

  //SoftInput navigation buttons height.
  private int getNavigationButtonHeight(Activity activity) {
    // getRealMetrics is only available with API 17 and +
    DisplayMetrics metrics = new DisplayMetrics();
    activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
    int usableHeight = metrics.heightPixels;
    activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);
    int realHeight = metrics.heightPixels;
    if (realHeight > usableHeight)
        return realHeight - usableHeight;
    else
        return 0;

  }
}

在包含相应网页视图的主要活动中添加WindowResize.assistActivity(this);。

当我们专注于输入然后将其显示在软键盘（WebView）上方时，有什么办法吗？

1 个答案: