Android:如何在线性布局中设置网格布局?

时间:2015-02-10 02:26:13

标签: java android

我使用以下代码更改子网格布局中的边距:

GridLayout grid = (GridLayout) findViewById(R.id.grid);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
params.setMargins(15,marginTop,15,marginBottom);
grid.setLayoutParams(params);

我收到错误消息

  

android.widget.GridLayout $ LayoutParams无法强制转换为android.widget.LinearLayout $ LayoutParams

我的XML文件是:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:orientation="vertical"
    android:background="#fff5f5f5"
    tools:context=".LinearLayout" >

<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/grid"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="100dp"
        android:layout_marginBottom="100dp"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_gravity="center"
        android:columnCount="8"
        android:rowCount="8"
        android:orientation="horizontal">

</GridLayout>

</LinearLayout>

我应该更改什么才能摆脱错误?

1 个答案:

答案 0 :(得分:1)

您无法将LinearLayout.LayoutParams指定给GridLayout。有关如何以编程方式调整GridLayout参数的示例,请参阅this SO answer