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程序员文章站 2022-03-27 12:33:28
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        tools:context=".MainActivity">

    <Spinner android:layout_width="wrap_content" android:layout_height="wrap_content"
             android:id="@+id/spinner"
             android:entries="@array/ctype"
    />

    <EditText android:layout_width="wrap_content" android:layout_height="wrap_content"
              android:text="搜索"
              />



</LinearLayout>

arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="ctype">
        <item>全部</item>
        <item>电影</item>
        <item>图书</item>
        <item>游戏</item>

    </string-array>
</resources>

package com.example.spinner;

import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Spinner spinner=findViewById(R.id.spinner);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                String result=parent.getItemAtPosition(position).toString();
                Toast.makeText(MainActivity.this,result,Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });

        /*String[] ctype=new String[]{"全部","美术","音乐","体育"};
        ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item,ctype);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        Spinner spinner=findViewById(R.id.spinner);
        spinner.setAdapter(adapter);
        String selectedItem = spinner.getSelectedItem().toString();*/

    }
}

相关标签: Android