Android 仿微信聊天页面键盘弹起问题

废话不多说，直接上效果图

然后呢，直接上代码

    //在Activity的OnCreate方法里面监听方法
    initKeyboardListener();

    /**
     * 监听软键盘弹出
     */
    private void initKeyboardListener() {
        View decorView = getWindow().getDecorView();
        View contentView = findViewById(Window.ID_ANDROID_CONTENT);
        decorView.getViewTreeObserver().addOnGlobalLayoutListener(getGlobalLayoutListener(decorView, contentView));
    }

    /**
     * 软键盘弹出后的处理事件
     */
    private ViewTreeObserver.OnGlobalLayoutListener getGlobalLayoutListener(final View decorView, final View contentView) {
        return new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                Rect rect = new Rect();
                decorView.getWindowVisibleDisplayFrame(rect);

                int height = decorView.getContext().getResources().getDisplayMetrics().heightPixels;
                // 获取键盘抬高的高度
                int diff = height - rect.height();
                LogWrite.d("height:"+height, LogModel.MODEL_COMMON);
                LogWrite.d("rect:"+rect.toString(), LogModel.MODEL_COMMON);
                LogWrite.d("diff:"+diff, LogModel.MODEL_COMMON);

                if (diff > 0) {
                    if (contentView.getPaddingBottom() != diff) {
                        // 将聊天记录定位到最后一行
                        recyclerView.scrollToPosition(messageAdapter.getItemCount() - 1);
                        contentView.setPadding(0, 0, 0, diff);
                    }
                } else {
                    if (contentView.getPaddingBottom() != 0) {
                        contentView.setPadding(0, 0, 0, 0);
                    }
                }
            }
        };
    }