如何增加gridview的setOnItemClickListener [英] How to add gridview setOnItemClickListener
问题描述
我有与它81键的GridView。欲clicklistener添加到此gridview的,但它不提供。我不明白,我添加OnItemClickListener,但它不工作。有一个与code没有错误。只有我已经是一个不工作OnItemClickListener。
我的gridview的孩子上它具有(gridview_members.xml)按钮;
<?XML版本=1.0编码=UTF-8&GT?;
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:layout_width =match_parent
机器人:layout_height =match_parent
><按钮
机器人:ID =@ + ID /城
机器人:layout_width =183dp
机器人:layout_height =90dp
机器人:TEXTSIZE =19sp
机器人:文字样式=大胆
机器人:文字=code \\ n \\ nCity
机器人:比重=中心
机器人:背景=@绘制/ city_btn_tablet/>< / RelativeLayout的>
我ImageAdapter类;
公共类ImageAdapter延伸BaseAdapter {
私人语境mContext;公共ImageAdapter(上下文C){
mContext = C;
}公众诠释的getCount(){
返回81;
}公共对象的getItem(INT位置){
返回null;
}众长getItemId(INT位置){
返回0;
}@覆盖
公共查看getView(INT位置,查看convertView,父母的ViewGroup){ LayoutInflater吹气=(LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 查看GridView控件; GridView控件=新景(mContext); GridView控件= inflater.inflate(R.layout.gridview_members,NULL); 按钮城市=(按钮)gridView.findViewById(R.id.city); 返回GridView控件;
}}
在activity_main.xml中的GridView实施;
< GridView控件
机器人:ID =@ + ID / GridView控件
机器人:layout_width =WRAP_CONTENT
机器人:layout_height =WRAP_CONTENT
机器人:horizontalSpacing =5DP
机器人:verticalSpacing =5DP
机器人:比重=中心
机器人:stretchMode =columnWidth时
机器人:为numColumns =6>
< / GridView的>
最后我MainActivity.java文件;
公共类MainActivity延伸活动{@覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main); GridView控件的GridView =(GridView控件)findViewById(R.id.gridview);
gridview.setAdapter(新ImageAdapter(本)); gridview.setOnItemClickListener(新OnItemClickListener(){
@覆盖
公共无效onItemClick(适配器视图<>母公司,视图V,INT位置,长的id){
Toast.makeText(MainActivity.this,+位置,Toast.LENGTH_SHORT).show();
}
});
}
}
您请求的项目不点击按钮内部项目的点击,所以你需要改变你的孩子XML布局
从
<?XML版本=1.0编码=UTF-8&GT?;
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:layout_width =match_parent
机器人:layout_height =match_parent
><按钮
机器人:ID =@ + ID /城
机器人:layout_width =183dp
机器人:layout_height =90dp
机器人:TEXTSIZE =19sp
机器人:文字样式=大胆
机器人:文字=code \\ n \\ nCity
机器人:比重=中心
机器人:背景=@绘制/ city_btn_tablet/>< / RelativeLayout的>
到
<?XML版本=1.0编码=UTF-8&GT?;
<按钮
的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID /城
机器人:layout_width =183dp
机器人:layout_height =90dp
机器人:TEXTSIZE =19sp
机器人:可点击=真
机器人:文字样式=大胆
机器人:文字=code \\ n \\ nCity
机器人:比重=中心
机器人:背景=@绘制/ city_btn_tablet/>
也可以添加ClickListener内apater
@覆盖
公共查看getView(INT位置,查看convertView,父母的ViewGroup){ LayoutInflater吹气=(LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 查看GridView控件; GridView控件=新景(mContext); GridView控件= inflater.inflate(R.layout.gridview_members,NULL); 按钮城市=(按钮)gridView.findViewById(R.id.city); city.setOnClickListener(新View.OnClickListener(){
@覆盖
公共无效的onClick(视图v){ //这里吐司 }}); 返回GridView控件;
}
I have a GridView with 81 button on it. I want to add clicklistener to this gridview but it is not available. I can not understand that i add OnItemClickListener but it is not working. There is no error with the code. Only i have is a not working OnItemClickListener.
My gridview children which has a button on it(gridview_members.xml);
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<Button
android:id="@+id/city"
android:layout_width="183dp"
android:layout_height="90dp"
android:textSize="19sp"
android:textStyle="bold"
android:text="Code\n\nCity"
android:gravity="center"
android:background="@drawable/city_btn_tablet" />
</RelativeLayout>
My ImageAdapter class;
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return 81;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
gridView =new View(mContext);
gridView = inflater.inflate(R.layout.gridview_members, null);
Button city = (Button) gridView.findViewById(R.id.city);
return gridView;
}
}
Gridview implementation on activity_main.xml ;
<GridView
android:id="@+id/gridview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:horizontalSpacing="5dp"
android:verticalSpacing="5dp"
android:gravity="center"
android:stretchMode="columnWidth"
android:numColumns="6" >
</GridView>
And finally my MainActivity.java file;
public class MainActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
Toast.makeText(MainActivity.this, "" + position, Toast.LENGTH_SHORT).show();
}
});
}
}
you are requesting item click not button click inside item , so you need to change your child xml layout
from
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<Button
android:id="@+id/city"
android:layout_width="183dp"
android:layout_height="90dp"
android:textSize="19sp"
android:textStyle="bold"
android:text="Code\n\nCity"
android:gravity="center"
android:background="@drawable/city_btn_tablet" />
</RelativeLayout>
to
<?xml version="1.0" encoding="utf-8"?>
<Button
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/city"
android:layout_width="183dp"
android:layout_height="90dp"
android:textSize="19sp"
android:clickable="true"
android:textStyle="bold"
android:text="Code\n\nCity"
android:gravity="center"
android:background="@drawable/city_btn_tablet" />
or you can add ClickListener inside apater
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
gridView =new View(mContext);
gridView = inflater.inflate(R.layout.gridview_members, null);
Button city = (Button) gridView.findViewById(R.id.city);
city.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Toast here
}});
return gridView;
}
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