Shulou(Shulou.com)06/03 Report--

This article introduces the relevant knowledge of "how to achieve Android scrolling menu ListView". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The details are as follows

Description: scroll menu ListView and click event

Code structure:

1. Create a list display model

App\ src\ main\ res\ layout\ fruit_item.xml

2. Quote the main interface.

App\ src\ main\ res\ layout\ activity_main.xml

3. Create a fruit class

App\ src\ main\ java\ com\ example\ listviewtest\ Fruit.java

Package com.example.listviewtest; public class Fruit {private String name; private int imageId; public Fruit (String name,int imageId) {this.name = name; this.imageId = imageId;} public String getName () {return name;} public int getImageId () {return imageId;}}

4. Create an adapter

App\ src\ main\ java\ com\ example\ listviewtest\ FruitAdapter.java

Package com.example.listviewtest; import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ArrayAdapter;import android.widget.ImageView;import android.widget.TextView; import java.util.List; public class FruitAdapter extends ArrayAdapter {private int resourceId; public FruitAdapter (Context context, int textViewResourceId, List object) {super (context,textViewResourceId,object) ResourceId = textViewResourceId;} public View getView (int position, View converView, ViewGroup parent) {Fruit fruit = getItem (position); View view = LayoutInflater.from (getContext ()) .propagate (resourceId,parent,false); ImageView fruitImage = (ImageView) view.findViewById (R.id.fruit_image); TextView fruitName = (TextView) view.findViewById (R.id.fruit_name); fruitImage.setImageResource (fruit.getImageId ()) FruitName.setText (fruit.getName ()); return view;}

5. Main content

App\ src\ main\ java\ com\ example\ listviewtest\ MainActivity.java

Package com.example.listviewtest; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.Toast; import java.util.ArrayList;import java.util.List; public class MainActivity extends AppCompatActivity {private List fruitList = new ArrayList (); @ Override protected void onCreate (Bundle savedInstanceState) {super.onCreate (savedInstanceState); setContentView (R.layout.activity_main) InitFruits (); / / initialize fruit data FruitAdapter adapter = new FruitAdapter (MainActivity.this,R.layout.fruit_item,fruitList); ListView listView = (ListView) findViewById (R.id.list_view); listView.setAdapter (adapter) / / respond to the click event listView.setOnItemClickListener (new AdapterView.OnItemClickListener () {@ Override public void onItemClick (AdapterView adapterView, View view, int I, long l) {Fruit fruit = fruitList.get (I); Toast.makeText (MainActivity.this,fruit.getName (), Toast.LENGTH_SHORT). Show ();}}) } private void initFruits () {for (int iTuno

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