大概就这种效果

额，突然发现UC被我卸载了，这个是QQ浏览器的效果，不过都一样，如果当前页面不是全屏的话，把根布局设为相对布局，然后设置评论布局为处于底部，这样在点击评论时弹开键盘会触发布局重绘，底部的评论也会处于软键盘的上方，键盘消息，布局下移，但是我们要说的是全屏的情况下我们如何处理。
首先要监听到软件盘弹起，然后再设置评论的popupWindow

import android.app.Activity;
import android.graphics.Rect;
import android.support.v4.app.Fragment;
import android.view.View;
import android.view.ViewTreeObserver;public class KeyboardStatusDetector {private static final int SOFT_KEY_BOARD_MIN_HEIGHT = 100;private KeyboardVisibilityListener mVisibilityListener;boolean keyboardVisible = false;public KeyboardStatusDetector registerFragment(Fragment f) {return registerView(f.getView());}public KeyboardStatusDetector registerActivity(Activity a) {return registerView(a.getWindow().getDecorView().findViewById(android.R.id.content));}public KeyboardStatusDetector registerView(final View v) {v.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {@Overridepublic void onGlobalLayout() {Rect r = new Rect();v.getWindowVisibleDisplayFrame(r);//int heightDiff = v.getRootView().getHeight() - (r.bottom - r.top);int heightDiff = v.getRootView().getHeight() - r.bottom;LogUtils.e("键盘A--->", v.getRootView().getHeight() +"   "+ r.bottom +"  "+ r.top);if (heightDiff > SOFT_KEY_BOARD_MIN_HEIGHT) { // if more than 100 pixels, its probably a keyboard...if (!keyboardVisible) {keyboardVisible = true;if (mVisibilityListener != null) {mVisibilityListener.onVisibilityChanged(true, heightDiff);}}} else {if (keyboardVisible) {keyboardVisible = false;if (mVisibilityListener != null) {mVisibilityListener.onVisibilityChanged(false, heightDiff);}}}}});return this;}public KeyboardStatusDetector setVisibilityListener(KeyboardVisibilityListener listener) {mVisibilityListener = listener;return this;}public interface KeyboardVisibilityListener {void onVisibilityChanged(boolean keyboardVisible, int heightDiff);}
}

然后再对popupWindow进行设置位置

private void showSendMsgPop() {if (null == sendMsgPopup) {sendMsgPopup = new SendMsgPopupWindow(NewsDetailsActivity.this);}//设置处于底部sendMsgPopup.showAtLocation(getWindow().getDecorView(), Gravity.BOTTOM, 0, 0);}

当然，最后最关键的是popupWindow里的配置，要不然popupWindow会被软键盘遮挡。

@Overridepublic void dismiss() {super.dismiss();// 评论框消息的同时把软键盘关闭KeyBoardUtils.closeKeybord(editText, mContext);}public void showAtLocation(View parent, int gravity, int x, int y) {// 这三行配置是关键this.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);this.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);this.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED); // 在显示输入法之后调用，否则popupwindow会在窗口底层super.showAtLocation(parent, gravity, x, y);}