android – Gridview只返回一行

我在相对布局中使用GridView.我希望GridView显示
显示所有行所需的高度.但是,我只是看到了
设置时一行(layout_width = MATCH_PARENT和)
layout_height = WRAP_CONTENT.如果我将layout_height设置为一个大小
等于多行,然后我看到那些行.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
>

<RelativeLayout
    android:id="@+id/layout_month"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
     >

    <TextView
        android:id="@+id/textv_month_name"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:gravity="center_horizontal|center_horizontal"
        android:textColor="#ffffff"
        android:textSize="7dp" />

    <ImageView
        android:id="@+id/top_bar"
        android:layout_width="fill_parent"
        android:layout_height="15dp"
        android:layout_below="@+id/textv_month_name"
        android:background="@drawable/calendar_top_small"
        android:clickable="false" />

    <GridView
        android:id="@+id/gridv_inner"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/top_bar"
        android:layout_gravity="center"
        android:clickable="false"
        android:gravity="center"
        android:numColumns="7"
        android:stretchMode="columnWidth"
         >
    </GridView>

    <Button
        android:id="@+id/monthBtn"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@android:color/transparent" />
</RelativeLayout>

</RelativeLayout>

任何帮助都会很明显

解决方法

这是一个非常有用的答案.

当GridView放在一个垂直狭窄的空间时,它不喜欢它的高度的wrap_content;它只显示了一行项目(滚动该行中的所有内容).

我的修复程序的简短版本包括对GridView进行子类化并覆盖onMeasure方法.修复的本质集中在将测量的高度规格设置为可笑的大数字.

MyGridview.Java

package com.arun.calendar;

   import android.content.Context;
   import android.util.AttributeSet;
   import android.widget.GridView;

   public class MyGridView extends GridView {

 public MyGridView(Context context) {
        super(context);
    }

    public MyGridView(Context context,AttributeSet attrs) {
        super(context,attrs);
    }

    public MyGridView(Context context,AttributeSet attrs,int defStyle) {
        super(context,attrs,defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec,int heightMeasureSpec) {
        int heightSpec;

        if (getLayoutParams().height == LayoutParams.WRAP_CONTENT) {

            // The two leftmost bits in the height measure spec have
            // a special meaning,hence we can't use them to describe height.
            heightSpec = MeasureSpec.makeMeasureSpec(
                    Integer.MAX_VALUE >>2,MeasureSpec.AT_MOST);
        }
        else {
            // Any other height should be respected as is.
            heightSpec = heightMeasureSpec;
        }

        super.onMeasure(widthMeasureSpec,heightSpec);
    }
}

和新的XML文件

<?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center" >

<RelativeLayout
    android:id="@+id/layout_month"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:id="@+id/textv_month_name"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:gravity="center_horizontal|center_horizontal"
        android:textColor="#ffffff"
        android:textSize="7dp" />

    <ImageView
        android:id="@+id/top_bar"
        android:layout_width="fill_parent"
        android:layout_height="15dp"
        android:layout_below="@+id/textv_month_name"
        android:background="@drawable/calendar_top_small"
        android:clickable="false" />

    <com.arun.calendar.MyGridView
        android:id="@+id/gridv_inner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/top_bar"
        android:layout_gravity="center"
        android:clickable="false"
        android:gravity="center"
        android:numColumns="7"
        android:stretchMode="columnWidth" />
</RelativeLayout>

<Button
    android:id="@+id/monthBtn"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@android:color/transparent" />

</RelativeLayout>

并在java文件中

MyGridView  viewHolder.gridView = (MyGridView) v.findViewById(R.id.gridv_inner);