我实现了一个网格视图，其中填充了一个"产品"数组以及另一个"产品图像"数组，以构成 Sqlite 数据库中产品的网格视图列表。但是，当我设置 OnItemClickListener 时，当我在设备上运行应用时，网格视图项不可单击。它只是能够向下滚动产品和图像，但不可点击。
该应用程序运行良好，图像与产品详细信息一起显示，但每个网格项都不可单击。为什么会这样
？这是我的代码：
主活动类
gridView = (GridView)findViewById(R.id.grid);
ProductGridInflator bA = new ProductGridInflator(this, R.layout.home ,dbProducts, dbImages);
gridView.setAdapter(bA);
gridView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Product currentProduct = new Product();
String product_name=null;
for(int i=0;i<dbProducts.size();i++)
{
product_name = dbProducts.get(i).NAME;
}
//Sharing product details with all windows
SharedPreferences pref = getApplicationContext().getSharedPreferences("AppProduct", 0); // 0 - for private mode
Editor editor = pref.edit();
editor.putString("pname", product_name);
editor.commit();
Intent inn1=getIntent();
inn1=new Intent(HomeActivity.this, ProductSingle_Activity.class);
startActivity(inn1);
}
});
单个网格项的 XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/feed_bg"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="@dimen/feed_item_margin"
android:layout_marginRight="@dimen/feed_item_margin"
android:layout_marginTop="@dimen/feed_item_margin"
android:background="@drawable/bg_parent_rounded_corner"
android:orientation="vertical"
android:paddingBottom="@dimen/feed_item_padding_top_bottom"
android:paddingTop="@dimen/feed_item_padding_top_bottom" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="@dimen/feed_item_padding_left_right"
android:paddingRight="@dimen/feed_item_padding_left_right" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="@dimen/feed_item_profile_info_padd" >
<TextView
android:id="@+id/grid_text"
android:layout_width="285dp"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:textSize="18sp" />
<TextView
android:id="@+id/more_details"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="02:12pm"
android:textColor="@color/timestamp"
android:textSize="@dimen/feed_item_timestamp" />
<TextView
android:id="@+id/grid_desc"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:textColor="@color/timestamp"
android:textSize="15sp" />
</LinearLayout>
</LinearLayout>
<HorizontalScrollView
android:id="@+id/slider"
android:layout_width="match_parent"
android:layout_height="282dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_weight="0.55" >
<ImageView
android:id="@+id/grid_image"
android:layout_width="285dp"
android:layout_height="285dp" />
</HorizontalScrollView>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="@dimen/feed_item_padding_left_right"
android:paddingRight="@dimen/feed_item_padding_left_right" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="@dimen/feed_item_profile_info_padd" >
<TextView
android:id="@+id/interaction_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Likes: 34 Comments: 45"
android:textColor="@color/timestamp"
android:textSize="@dimen/feed_item_timestamp"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
网格视图适配器
public class ProductGridInflator extends ArrayAdapter<Product>{
private int[] Imageid; // this is the image id you are using... this is not initiatiliehs
ArrayList<Product> dbProducts; // your person arraylist
Context ctx; // the activity context
int resource; // this will be your xml file
ArrayList<Image> urlArr = new ArrayList<Image>();
ArrayList<Image> dbImages = new ArrayList<Image>();
public ProductGridInflator(Context context, int resource,ArrayList<Product> objects, ArrayList<Image> obj) {
super(context, resource, objects);
// TODO Auto-generated constructor stub
this.dbProducts = objects;
this.ctx = context;
this.resource = resource;
this.dbImages = obj;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
if(dbProducts.size() == 0){
return 0;
}else{
return dbProducts.size();
}
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View child = convertView;
RecordHolder holder;
LayoutInflater inflater = ((Activity) ctx).getLayoutInflater(); // inflating your xml layout
if (child == null) {
child = inflater.inflate(R.layout.grid_single, parent, false);
holder = new RecordHolder();
holder.productName = (TextView) child.findViewById(R.id.grid_text); // fname is the reference to a textview
//holder.productImage = (TextView) child.findViewById(R.id.txtLname); // in your xml layout file
//holder.bio =(TextView) child.findViewById(R.id.txtBio); // you are inflating.etc
holder.image = (ImageView) child.findViewById(R.id.grid_image);
holder.productDesc = (TextView) child.findViewById(R.id.grid_desc);
holder.moreDetails = (TextView) child.findViewById(R.id.more_details);
child.setTag(holder);
}else{
holder = (RecordHolder) child.getTag();
}
final Product user = dbProducts.get(position); // you can remove the final modifieer.
holder.productName.setText(user.getNAME());
//holder.lname.setText(user.getLName());
//holder.bio.setText(user.getBiography());
HorizontalScrollView scroller = (HorizontalScrollView) child.findViewById(R.id.slider);
for(int i=0;i<dbImages.size();i++)
{
if(dbImages.get(i).PID.equals(user.PID))
{
//Picasso.with(ctx).load(dbImages.get(i).URL).into(holder.image);
Picasso.with(ctx)
.load(dbImages.get(i).URL)
.placeholder(R.drawable.loading_placeholder)
.error(R.drawable.error_placeholder)
.into(holder.image);
}
else
continue;
}
holder.productDesc.setText(user.DESC);
holder.moreDetails.setText(user.CATEGORY + " - " + "Rating: " + user.RATING + " - " + "Sizes: " + user.SIZE);
// the string as url and set it to your imageview..
return child;
}
static class RecordHolder {
TextView productName;
ImageView image;
TextView productDesc;
TextView moreDetails;
}
@Override
public void notifyDataSetChanged() { // you can remove this..
// TODO Auto-generated method stub
if(getCount() == 0){
//show layout or something that notifies that no list is in..
}else{
// this is to make sure that you can call notifyDataSetChanged in any place and any thread
new Handler(getContext().getMainLooper()).post(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
ProductGridInflator.super.notifyDataSetChanged();
}
});
}
}
}
XML(网格视图所在的窗口(：
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="activity.classes.HomeActivity" >
<RelativeLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8pt"
android:gravity="center_horizontal"
android:text="Jezza"
android:textSize="25dip" />
<TextView
android:id="@+id/hub_error"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="2dip"
android:textColor="#e30000"
android:textStyle="bold" />
<GridView
android:id="@+id/grid"
android:layout_width="fill_parent"
android:layout_height="395dp"
android:layout_alignParentBottom="true"
android:columnWidth="100dp"
android:gravity="center"
android:numColumns="1"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" />
</RelativeLayout>
<ListView
android:id="@+id/drawerList"
android:background="#EEEEEE"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="@null"
android:dividerHeight="0dp" />
</android.support.v4.widget.DrawerLayout>
谢谢！
尝试将内容添加到另一个布局，并将该布局膨胀为网格视图，如下所示。
public View getView(int position, View convertView, ViewGroup parent) {
View grid = convertView;
if (convertView == null) {
grid = inflater.inflate(R.layout.gridview_layout, parent, false);
} else {
grid = (View) convertView;
}
final Button bt = (Button) grid.findViewById(R.id.ready);
final TextView tno=(TextView)grid.findViewById(R.id.txt);
final TextView name=(TextView)grid.findViewById(R.id.txt3);
final TextView qty=(TextView)grid.findViewById(R.id.txt4);
final TextView instr=(TextView)grid.findViewById(R.id.txt5);
dish = data.get(position);
tno.setText(dish.get(KEY_TNO));
name.setText("NAME: "+dish.get(KEY_NAME));
qty.setText("QTY:"+dish.get(KEY_QUANTITY));
instr.setText("INSTRN: "+dish.get(KEY_INSTRUCTION));
bt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String tn = tno.getText().toString();
System.out.println("TABLE NO:"+tn);
Toast.makeText(getApplicationContext(), "Successssss"+tn, Toast.LENGTH_SHORT).show();
}
});
return grid;
}
当
网格项内的任何视图可单击时，不会触发 GridView onItemClick。我看到您的网格项目布局包含默认情况下可单击的水平滚动视图(这非常有意义，当滚动视图未处理单击事件时，如何与滚动视图交互(。
如果要使用这样的布局，则必须在网格项级别而不是网格级别处理所有单击事件。