GridLayout 中的 Gravity.CENTER 不起作用

Question

这是我在Android Studio中运行时工作正常的XML，如何以编程方式做到这一点？

<?xml version="1.0" encoding="utf-8"?>
<GridLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
tools:context="com.test.MainActivity">
<TextView
android:text="Texto 1"/>
</GridLayout>

这是我尝试制作的代码，但没有成功...

//TODO create Grid params
GridLayout.LayoutParams gridParams = new GridLayout.LayoutParams();
gridParams.height = GridLayout.LayoutParams.WRAP_CONTENT;
gridParams.width = GridLayout.LayoutParams.WRAP_CONTENT;
//TODO set gravity to CENTER
gridParams.setGravity(Gravity.CENTER);
//TODO create GridLayout
GridLayout gridLayout = new GridLayout(context);
//TODO set Grid Params
gridLayout.setLayoutParams(gridParams);
//TODO create TextView
TextView textView = new TextView(context);
textView.setText("Text 1");
//TODO add to Grid
gridLayout.addView(textView);
setContentView(gridLayout);

安卓工作室版本 2.3.3 在运行安卓4.2.2的平板电脑上进行测试

编辑工作

RelativeLayout.LayoutParams layoutParams =
new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT);
RelativeLayout parentRelativeLayout = new RelativeLayout(context);
parentRelativeLayout.setLayoutParams(layoutParams);
parentRelativeLayout.setGravity(Gravity.CENTER);
parentRelativeLayout.addView(gridLayout);

Answer 1

网格布局需要位于另一个布局(如RelativeLayout)中，其宽度和高度为匹配父级。

并不是说它不起作用，只是这样想，gridLayout 只够大，可以容纳自己的容器，这不是屏幕的大小。

Answer 2

试试这个。

GridLayout.LayoutParams gridParams = new GridLayout.LayoutParams();
gridParams.height = GridLayout.LayoutParams.WRAP_CONTENT;
gridParams.width = GridLayout.LayoutParams.MATCH_PARENT;
params.gravity = Gravity.CENTER;
params.weight=1.0f;

TODO 创建网格参数