GridView规则显示图片

//自定义的GridView ,以后可以直接把这个类粘过去用
public class GridViewEx extends GridView {
private OnTouchInvalidPositionListener onTouchInvalidPositionListener; public GridViewEx(Context context) {
super(context);
} public GridViewEx(Context context, AttributeSet attrs) {
super(context, attrs);
} @Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
} @Override
public boolean onTouchEvent(MotionEvent ev) {
//先创建一个监听接口，一旦点击了无效区域，便实现onTouchInvalidPosition方法，返回true or false来确认是否消费了这个事件
if(onTouchInvalidPositionListener!=null){
if(!isEnabled()){
return isClickable()||isLongClickable();
}
int motionPosition = pointToPosition((int)ev.getX(), (int)ev.getY());
if(ev.getAction()==MotionEvent.ACTION_UP&&motionPosition == INVALID_POSITION){
super.onTouchEvent(ev);
return onTouchInvalidPositionListener.onTouchInvalidPosition(motionPosition);
}
}
return super.onTouchEvent(ev);
} public void setOnTouchInvalidPositionListener(
OnTouchInvalidPositionListener onTouchInvalidPositionListener) {
this.onTouchInvalidPositionListener = onTouchInvalidPositionListener;
} public interface OnTouchInvalidPositionListener{
public boolean onTouchInvalidPosition(int motionEvent);
}}

//每张图片宽为90dp,GirdView的大小根据图片数量自适应，如果没有图片，那么GridVIew就相当于没有了
<com.antuweb.track.tracker.ui.GridViewEx
android:id="@+id/gv_squre"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:columnWidth="90dp"
android:focusable="false"
android:gravity="center_horizontal"
android:horizontalSpacing="1dip"
android:numColumns="auto_fit"
android:stretchMode="columnWidth" //拉伸模式
android:verticalSpacing="1dip" />

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"> <ImageView
android:id="@+id/iv_gv_item_squre"
android:layout_width="match_parent"
android:layout_height="110dp"
android:scaleType="centerCrop" /></LinearLayout>