调整GridView单元格的高度以适应剩余空间 [英] Adapt a GridView cell's height to remaining space
问题描述
嗯，我的问题很简单.
我正在开始Android编程，并且正在编写一个简单的日历应用程序.
我的主要布局是这样的(RelativeLayout上方还有其他内容，但我认为这并不重要):
<RelativeLayout
android:id
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/header" >
<GridView
android:id="@+id/month_days"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numColumns="7"
android:stretchMode="columnWidth"
android:columnWidth="60dp"
android:horizontalSpacing="1dp"
android:verticalSpacing="1dp" >
</GridView>
</RelativeLayout>
我希望GridView使用布局中的每个像素，包括高度和宽度.我可以调整de columnWidth属性来实现这一点，但是我不知道该如何使用高度.
我正在考虑获取RelativeLayout尺寸(特别是高度)，然后将其除以6，这就是我想要的行数...但是我不确定这是否正确，也不知道如何执行此操作./p>
提前谢谢！
我没说什么:我有一个自定义适配器来填充GridView及其属性.这是代码.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:background="@color/actual_month_day" >
<TextView
android:id="@+id/day_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
</TextView>
</RelativeLayout>
例如，如果更改android:layout_height="65dp"，它将使单元格变大，这与我想要的类似，但是它不能覆盖整个屏幕.如果我写一个更大的值，我需要滚动查看整个网格.
问题在于价值.我希望"65dp"是动态的，并根据屏幕上的可用空间进行更改.
如果有帮助，这是我的适配器中的getView().
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v;
TextView actualDay;
if (convertView == null) {
v = new View(c);
v = inflater.inflate(R.layout.calendar_day_2, parent, false);
actualDay = (TextView) v.findViewById(R.id.day_2);
actualDay.setText(days[position]);
if(!isActualMonth(position)) v.setBackgroundColor(c.getResources().getColor(R.color.not_actual_month_day));
} else {
v = (View) convertView;
}
return v;
}
我认为我必须在getView()代码中计算布局的剩余空间，但是我不知道如何.
我尝试添加actualDay.setHeight(parent.getHeight()/6);，但是并没有太大帮助.单元格的高度还可以，但是它会向上滚动，然后一切都消失了.之后，我设置了android:scrollbars="none"，但仍然没有设置.
我不知道这里出了什么问题.逻辑也许不错，但是滚动条的属性不是我所需要的.抱歉，如果有点麻烦，但是我想告诉您我尝试过的事情.
再次感谢您.
我建议您使用代码(如果高度看起来不错)
actualDay.setHeight(parent.getHeight()/6);
并禁用gridview的滚动.以下链接的代码显示了如何禁用滚动如何在Android中禁用GridView滚动?.
Well, my question is quite simple.
I am beginning Android programming and I am programming a simple calendar app.
My main layout is like this (There's more above the RelativeLayout, but I think it's not important):
<RelativeLayout
android:id
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/header" >
<GridView
android:id="@+id/month_days"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numColumns="7"
android:stretchMode="columnWidth"
android:columnWidth="60dp"
android:horizontalSpacing="1dp"
android:verticalSpacing="1dp" >
</GridView>
</RelativeLayout>
I want the GridView to use every single pixel in the Layout, in height and in width. I could adjust de columnWidth property to gain that, but I don't know how to do this with height.
I was thinking in getting the RelativeLayout dimensions (height particularly), and dividing it by 6, which is the number of rows I want... But I'm not sure if this is correct neither how to do this.
Thanks in advance!
Edit:
Something I did not say: I have a custom adapter to populate the GridView and its properties. Here's the code.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:background="@color/actual_month_day" >
<TextView
android:id="@+id/day_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
</TextView>
</RelativeLayout>
If I change android:layout_height="65dp", for example, it makes the cell bigger, which is something similar to what I want, but it does not cover the entire screen. If I write a bigger value I need to scroll to see the whole grid.
The problem is the value. I want the "65dp" to be dynamic and change depending on the free space in the screen.
If it helps, here's the getView() in my adapter.
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v;
TextView actualDay;
if (convertView == null) {
v = new View(c);
v = inflater.inflate(R.layout.calendar_day_2, parent, false);
actualDay = (TextView) v.findViewById(R.id.day_2);
actualDay.setText(days[position]);
if(!isActualMonth(position)) v.setBackgroundColor(c.getResources().getColor(R.color.not_actual_month_day));
} else {
v = (View) convertView;
}
return v;
}
I think that I have to calculate the Layout's remaining space in the getView() code, but I don't know how.
I've tried adding actualDay.setHeight(parent.getHeight()/6); but it didn't help me too much. The cell's height is ok, but it scrolls up and then everything disappears. After that, I set android:scrollbars="none", but still nothing.
I do not know what's the problem here. Maybe the logic is fine, but the property of the scrollbar is not what I need. Sorry if it is all a bit messy, but I wanted to tell you the things I've tried.
Thank you again.
I would recommend that you use your code (if the height looks well)
actualDay.setHeight(parent.getHeight()/6);
and disable the scrolling for the gridview. The following link has code that shows how to disable scrolling How to disable GridView scrolling in Android?.
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