Android设置固定GridView自定义键盘高度

我正在为客户端自定义Emoji键盘。我们已经有一个iOS应用程序，现在试图在android中做出类似的东西。我使用的是一个类似于iOS中的UICollectionView的gridView。但我根本不明白为什么我不能为gridView设置高度。我想要实现的是设置特定的键盘高度，就像系统键盘一样，所以只显示8-10张图像，然后我可以滚动浏览其他图像。添加分页和水平滚动将是一个奖励和最后一步。Android设置固定GridView自定义键盘高度

下面是键盘我的XML文件：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/keyboardView" 
    android:layout_width="match_parent" 
    android:layout_height="240dp" 
    android:background="@android:color/white" 
    android:orientation="horizontal"> 

    <GridView 
     android:id="@+id/imageGridView" 
     android:layout_width="match_parent" 
     android:layout_height="240dp" 
     android:columnWidth="90dp" 
     android:gravity="center" 
     android:horizontalSpacing="10dp" 
     android:numColumns="auto_fit" 
     android:stretchMode="columnWidth" 
     android:verticalSpacing="10dp" /> 

</LinearLayout>

我InputServiceManagers onCreateInputView：

public View onCreateInputView() { 

     keyboardView = getLayoutInflater().inflate(R.layout.keyboard,null); 

     List<Integer> imageArray = new ArrayList<>(); 
     for (int i = 1; i <= 20;i++){ 
      try { 
       Class res = R.drawable.class; 
       String imageName = "sticker" + String.valueOf(i); 
       Field field = res.getField(imageName); 
       int drawableID = field.getInt(null); 
       imageArray.add(drawableID); 
      } catch (Exception e) { 
       Log.e("MyTag","Failure to get drawable id.",e); 
      } 
     } 

     imageGrid = (GridView) keyboardView.findViewById(R.id.imageGridView); 
     imageGrid.setNumColumns(4); 
     ImageGridAdapter adapter = new ImageGridAdapter(this); 
     adapter.imageArray = imageArray; 
     imageGrid.setAdapter(adapter); 


     return keyboardView; 

    }

GridViewAdapter：

public class ImageGridAdapter extends BaseAdapter { 

    private Context mContext; 
    public List<Integer> imageArray; 

    public ImageGridAdapter(Context c) { 
     mContext = c; 
    } 

    public int getCount() { 
     return imageArray.size(); 
    } 

    public Object getItem(int position) { 
     return imageArray.get(position); 
    } 

    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     ImageView imageView; 
     if (convertView == null) { 
      // if it's not recycled, initialize some attributes 
      imageView = new ImageView(mContext); 
      imageView.setLayoutParams(new GridView.LayoutParams(120, 120)); 
      imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); 
      //imageView.setPadding(1, 1, 1, 1); 
     } else { 
      imageView = (ImageView) convertView; 
     } 

     imageView.setImageResource(imageArray.get(position)); 
     return imageView; 
    } 


}

这是最终产品应该怎么样子：