弹出sub View在当前窗口

其实呢就是想做一个和输入法弹出差不多的效果

<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>

<RelativeLayout
android:id="@+id/mediaPopup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:visibility="gone"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="I am a media player!"
/>
</RelativeLayout>

</RelativeLayout>
function void showMediaPlayer() {

if(mMediaPopUp.getVisibility() == View.GONE) {

// Show Media Player
TranslateAnimation mAnimUp =
new TranslateAnimation(
Animation.RELATIVE_TO_SELF,
0,
Animation.RELATIVE_TO_SELF,
0,
Animation.RELATIVE_TO_SELF,
-(mMediaPopUp.getHeight()),
Animation.RELATIVE_TO_SELF,
0);

mAnimUp.setStartOffset(500);
mAnimUp.setDuration(500);

mMediaPopUp.setVisibility(View.VISIBLE);
mMediaPopUp.setAnimation(mAnimUp);

}
}

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