我在GridView中遇到行高的各种问题。
我想用XML设置项目的大小(高度/宽度),然后让GridView自动调整尽可能多,不需要拉伸。如果它不适合下一个元素,它应该只在它能够适应的当前元素数量周围添加填充。
目前我得到2列(对我来说几乎看起来固定大小)并且行被拉伸。有人可以帮助解释发生了什么以及如何实现我的目标吗?
GridView的:
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/main_grid"
android:numColumns="auto_fit"
android:gravity="center"
android:paddingRight="20dp"
android:paddingLeft="20dp"
android:clipToPadding="true"
android:fitsSystemWindows="true"
android:stretchMode="none"
android:background="@drawable/main_grid_background">
</GridView>
GridItem(我想要它320x320,因为我后来在其中插入一个背景图像,如果它不是一个完美的正方形,看起来很奇怪。)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="320dp"
android:layout_height="320dp"
android:padding="10dp" >
<TextView
android:id="@+id/grid_item_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:singleLine="true"
android:text="@+id/label"
android:layout_marginTop="5dp"
android:textColor="@color/black"
android:textSize="15sp"
android:visibility="invisible"
android:layout_centerInParent="true" >
</TextView>
</RelativeLayout>
爪哇:
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if (convertView == null) {
gridView = new View(context);
// get layout from mobile.xml
gridView = inflater.inflate(R.layout.main_grid_item, null);
} else {
gridView = (View) convertView;
}
TextView textView = (TextView) gridView
.findViewById(R.id.grid_item_label);
//SET TEXT AND BACKGROUND IMAGE HERE
//gridView.setBackgroundResource(R.drawable.main_grid_item_import);
return gridView;
}
答案 0 :(得分:49)
在CustomAdapter
中v.setLayoutParams(new GridView.LayoutParams(GridView.AUTO_FIT, rowHigh));
rowHigh是您必须更改的维度
答案 1 :(得分:4)
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 great Android "hackatlon", the love, the magic.
// 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 {
heightSpec = heightMeasureSpec;
}
super.onMeasure(widthMeasureSpec, heightSpec);
}
}
在XML中:
<MyGridView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/main_grid"
android:gravity="center"/>
答案 2 :(得分:3)
所以,这不是一个完美的答案,但这就是我开始工作的方式。借鉴this主题的想法。
假设我知道我的图像尺寸为320x320,所有这些都有效。另外,在GridView中我必须设置android:columnWidth="320dp"
或者它不起作用。如果有人有更好的想法,请发布它...现在我继续前进。
网格项XML:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp" >
<ImageView
android:id="@+id/grid_item_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"/>
<TextView
android:id="@+id/grid_item_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:singleLine="true"
android:text="@+id/label"
android:textColor="@color/black"
android:layout_alignLeft="@+id/grid_item_image"
android:layout_alignTop="@+id/grid_item_image"
android:layout_alignRight="@+id/grid_item_image"
android:layout_alignBottom="@+id/grid_item_image"
android:gravity="center"
android:textSize="15sp"
android:visibility="invisible">
</TextView>
</RelativeLayout>
GridView XML:
<GridView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/main_grid"
android:numColumns="auto_fit"
android:gravity="center"
android:columnWidth="320dp"
android:paddingRight="20dp"
android:paddingLeft="20dp"
android:clipToPadding="true"
android:fitsSystemWindows="true"
android:stretchMode="columnWidth"
android:background="@drawable/main_grid_background">
</GridView>