最近在做直播项目，遇到一个问题就是软键盘弹起时会遮挡一部分的输入框，在网上找了很多办法都不能解决，最后还是dubug发现自己代码中一个获取屏幕可见高度时取值问题，改了之后变好了，下面上实现代码：

public class SoftKeyBoardListener {
    private View rootView;//activity的根视图
    int rootViewVisibleHeight;//纪录根视图的显示高度
    private OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener;

    public SoftKeyBoardListener(Activity activity) {
        //获取activity的根视图
        rootView = activity.getWindow().getDecorView();


        //监听视图树中全局布局发生改变或者视图树中的某个视图的可视状态发生改变
        rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                //获取当前根视图在屏幕上显示的大小
                Rect r = new Rect();
                rootView.getWindowVisibleDisplayFrame(r);

//                int visibleHeight = r.height();//就是这行代码获取第一次高度与后面几次高度不一致
                int visibleHeight = r.bottom;//修改为这行代码
                System.out.println(""+visibleHeight);
                if (rootViewVisibleHeight == 0) {
                    rootViewVisibleHeight = r.bottom;
                    return;
                }

                //根视图显示高度没有变化，可以看作软键盘显示／隐藏状态没有改变
                if (rootViewVisibleHeight == visibleHeight) {
                    return;
                }

                Log.e("弹起 ",r.bottom+" "+rootView.getRootView().getHeight());;

                //根视图显示高度变小超过200，可以看作软键盘显示了
                if (rootViewVisibleHeight - visibleHeight > 200) {
                    if (onSoftKeyBoardChangeListener != null) {
                        onSoftKeyBoardChangeListener.keyBoardShow(rootViewVisibleHeight - visibleHeight);
                    }
                    rootViewVisibleHeight = visibleHeight;
                    return;
                }

                //根视图显示高度变大超过200，可以看作软键盘隐藏了
                if (visibleHeight - rootViewVisibleHeight > 200) {
                    if (onSoftKeyBoardChangeListener != null) {
                        onSoftKeyBoardChangeListener.keyBoardHide(visibleHeight - rootViewVisibleHeight);
                    }
                    rootViewVisibleHeight = visibleHeight;
                    return;
                }

            }
        });
    }

    private void setOnSoftKeyBoardChangeListener(OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {
        this.onSoftKeyBoardChangeListener = onSoftKeyBoardChangeListener;
    }

    public interface OnSoftKeyBoardChangeListener {
        void keyBoardShow(int height);

        void keyBoardHide(int height);
    }

    public static void setListener(Activity activity, OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {
        SoftKeyBoardListener softKeyBoardListener = new SoftKeyBoardListener(activity);
        softKeyBoardListener.setOnSoftKeyBoardChangeListener(onSoftKeyBoardChangeListener);
    }
}

具体使用方法：

    SoftKeyBoardListener.setListener(getActivity(), new SoftKeyBoardListener.OnSoftKeyBoardChangeListener() {
            @Override
            public void keyBoardShow(int height) {

                view.scrollTo(0,height);// 当然还有这行代码
                ToastUtils.showToast(getActivity(), "显示" + height);
                sendView.setVisibility(View.VISIBLE);
                menuView.setVisibility(View.GONE);
                topView.setVisibility(View.GONE);


            }

            @Override
            public void keyBoardHide(int height) {//803
//                ToastUtils.showToast(getActivity(), "隐藏 " + height);
                sendView.setVisibility(View.GONE);
                menuView.setVisibility(View.VISIBLE);
                topView.setVisibility(View.VISIBLE);
                view.scrollTo(0,0);
            }
        });

view.scrollTo(0,height);
//view 最外层布局，需要调整的布局
//scrollToView 被键盘遮挡的scrollToView，滚动root,使scrollToView在root可视区域的底部

即可完美解决。

  <input type="text" value="" class="tinput" />;
      //针对直接在浏览器打开此方法有效
      $(".tinput").bind("focus", function () {
        // 软键盘弹起之后再调整滚动条位置
        if ($(this).offset().top > document.body.scrollHeight / 2) {
          setTimeout(function () {
            window.scrollTo(0, document.body.scrollHeight);
          }, 500);
        }
      });
      //针对嵌入app页面用以下方法
      $(".tinput").focus(function (e) {
        var u = navigator.userAgent;
        var isAndroid = u.indexOf("Android") > -1 || u.indexOf("Adr") > -1; //android终端
        if (isAndroid) {
          $("body").height($("body").height() + 300);
          $("body").scrollTop(300);
        }
      });
      // 失去焦点时重新回到原来的状态
      $(".tinput").blur(function (e) {
        var u = navigator.userAgent;
        var isAndroid = u.indexOf("Android") > -1 || u.indexOf("Adr") > -1; //android终端
        if (isAndroid) {
          $("body").height($("body").height() - 300);
          $("body").scrollTop(0);
        }
      });

// 苹果手机使用第三方输入法
  $(".tinput").on("focus", function () {
     var that = this;
        setTimeout(function () {
           that.scrollIntoView(true);
         }, 100);
   });