最后,我找到了我的问题的解决方法,所以我想分享给某人可能会在将来遇到同样的问题.我的布局简要描述如下：

//all stuff controls:editview,textview,....

我创建自定义类myRelativeLayout扩展RelativeLayout

public class myRelativeLayout extends RelativeLayout{

public interface OnRelativeLayoutChangeListener {

void onLayoutPushUp();

void onLayoutPushDown();

}

private OnRelativeLayoutChangeListener layoutChangeListener;

public myRelativeLayout(Context context, AttributeSet attrs) {

super(context, attrs);

// TODO Auto-generated constructor stub

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

final int proposedheight = MeasureSpec.getSize(heightMeasureSpec);

final int actualHeight = getHeight();

if (actualHeight > proposedheight){

// Keyboard is shown

layoutChangeListener.onLayoutPushUp();

} else if(actualHeight < proposedheight){

// Keyboard is hidden

layoutChangeListener.onLayoutPushDown();

}

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

}

public void setLayoutChangeListener(OnRelativeLayoutChangeListener layoutChangeListener) {

this.layoutChangeListener = layoutChangeListener;

}

public OnRelativeLayoutChangeListener getLayoutChangeListener() {

return layoutChangeListener;

}

}

在我的活动中,我只是为myRelativeLayout设置setLayoutChangeListener以在软键盘显示时隐藏底栏并在软键盘隐藏时显示底栏：

myRlayout.setLayoutChangeListener(new OnRelativeLayoutChangeListener() {

@Override

public void onLayoutPushUp() {

// TODO Auto-generated method stub

myBottombar.setVisibility(View.GONE);//in my case i need to setVisibility(View.GONE) to bottombar in order for this bar is not displayed when softkeyboard show up.

}

@Override

public void onLayoutPushDown() {

// TODO Auto-generated method stub

myBottombar.setVisibility(View.VISIBLE);// redisplay myBottombar when keyboard is closed.

}

});

不要忘记为活动设置android：windowSoftInputMode =“adjustResize”.希望这对有人遇到同样问题很有用.