尚学堂android开发零基础入门视频教程的资料（课件、源码）分享

<Spinner        android:id="@+id/spinner"
        android:layout_width="112dp"
        android:layout_height="85dp"
        android:entries="@array/spinner"
        android:spinnerMode="dialog"
        tools:layout_constraintTop_creator="1"
        android:layout_marginStart="59dp"
        android:layout_marginTop="125dp"
        tools:layout_constraintLeft_creator="1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginLeft="59dp" />
    <!--
    entries用来选定下拉列表的内容，在string.xml中配置
    spinnerMode用来选择弹出列表的形式，这里dialog指的是弹出窗口
    -->

<resources>
    <string name="app_name">Spinner</string>
    <string-array name="spinner">
        <item>丑逼</item>
        <item>贱婢</item>
        <item>母猪</item>
    </string-array></resources>
通过代码动态添加的方式-BaseAdapter 
布局文件
<Spinner        android:id="@+id/spinner"
        android:layout_width="112dp"
        android:layout_height="85dp"
        android:spinnerMode="dialog"
        tools:layout_constraintTop_creator="1"
        android:layout_marginStart="59dp"
        android:layout_marginTop="125dp"
        tools:layout_constraintLeft_creator="1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginLeft="59dp" />
Java代码
package com.example.administrator.spinner;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;import android.widget.BaseAdapter;
import android.widget.BaseExpandableListAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
public class MainActivity extends AppCompatActivity {
    private  String[] ss=new String[]
            {                    "北京",                    "上海",                    "深圳"
            };    private List<String> list=new ArrayList<String>();    @Override
    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list.add("明明");
        list.add("静静");
        list.add("爱爱");

        Spinner spinner=(Spinner) findViewById(R.id.spinner);
        BaseAdapter adapter = new MyAdapter();
        spinner.setAdapter(adapter);
    }    private class MyAdapter  extends  BaseAdapter{
        @Override
        public  int getCount()
        {            return ss.length;   //可换成list.size()
        }        @Override
        public  Object getItem(int position)
        {            return null;
        }        @Override
        public  long getItemId(int position)
        {            return 0;
        }        @Override
        public View getView(int position, View convertView , ViewGroup parent)
        {
            TextView textView=new TextView(MainActivity.this);
            textView.setText(ss[position]);   //可换成list.get(position)
            return textView;
        }
    }
}
ArrayAdapter直接继承BaseAdapter
Spinner spinner=(Spinner) findViewById(R.id.spinner);//        BaseAdapter adapter = new MyAdapter();
        ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,ss);
        spinner.setAdapter(adapter);
spinner的监听事件
Spinner spinner=(Spinner) findViewById(R.id.spinner);
       BaseAdapter adapter = new MyAdapter();

        spinner.setAdapter(adapter);
       spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {           @Override
           public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {               //position为当前选择的值得索引
               Toast.makeText(MainActivity.this,ss[position],Toast.LENGTH_SHORT).show();
           }           @Override
           public void onNothingSelected(AdapterView<?> parent) {

           }
       });