Spinner

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package com.example.administrator.spinner;

import android.app.Activity;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.Spinner;import android.widget.Toast;import java.util.ArrayList;import java.util.List;//http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0105/2264.htmlpublic class MainActivity extends Activity implements View.OnClickListener{    private String[] mItems;    private Spinner spinner;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Button button=(Button) findViewById(R.id.button);        Button button1=(Button)findViewById(R.id.button1);        button1.setOnClickListener(this);        button.setOnClickListener(this);        //数据源在布局文件中指定，android:entries="@array/languages////        Spinner spinner = (Spinner) findViewById(R.id.spinner1);//        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {//            @Override//            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {//////                String[] languages = getResources().getStringArray(R.array.languages);//                Toast.makeText(MainActivity.this, "你点击的是" + languages[position], Toast.LENGTH_LONG).show();//////            }////            @Override//            public void onNothingSelected(AdapterView<?> parent) {////            }//        });        //数据源在代码中获得// 初始化控件        spinner = (Spinner) findViewById(R.id.spinner1);// 建立数据源//        mItems = getResources().getStringArray(R.array.languages);        List<String> list= new ArrayList<>();        list.add("111");        list.add("222");        list.add("333");        list.add("444");// 建立Adapter并且绑定数据源        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list);//list或者mItems数组都行        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);//绑定 Adapter到控件        spinner.setAdapter(adapter);//        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {//            @Override//            public void onItemSelected(AdapterView<?> parent, View view,//                                       int pos, long id) {//////                String[] languages = getResources().getStringArray(R.array.languages);////                                                                //在setOnItemSelectedListener通过mItems[pos]来获取当前选中位置返回的数据//                Toast.makeText(MainActivity.this, "你点击的是:" + mItems[pos], Toast.LENGTH_LONG).show();//                Toast.makeText(MainActivity.this, "你点击的是:" + spinner.getSelectedItem().toString(), Toast.LENGTH_LONG).show();//                                                                //spinner.getSelectedItem().toString()返回当前选中的位置的数据//                ;////            }////            @Override//            public void onNothingSelected(AdapterView<?> parent) {//                // Another interface callback//            }//        });////chongzhi_recharge_money.getSelectedItem().toString();    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.button:                Toast.makeText(MainActivity.this, "当前选中的是:" + spinner.getSelectedItem(), Toast.LENGTH_LONG).show();                break;            case R.id.button1:                startActivity(new Intent(this,Main2Activity.class));                break;            default:                break;        }    }}
布局文件
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.administrator.spinner.MainActivity">    <Spinner        android:id="@+id/spinner1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="提交"        android:id="@+id/button"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true" />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="下一页"        android:id="@+id/button1"        android:layout_above="@+id/button"        android:layout_centerHorizontal="true"        android:layout_marginBottom="116dp" /></RelativeLayout>    <!--android:entries="@array/languages"-->


package com.example.administrator.spinner;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Spinner;import android.widget.Toast;import java.util.ArrayList;import java.util.List;public class Main2Activity extends AppCompatActivity implements View.OnClickListener {    private  Spinner spinner2;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);        Button button = (Button) findViewById(R.id.button2);        button.setOnClickListener(this);        // 初始化控件          spinner2 = (Spinner) findViewById(R.id.spinner2);        // 建立数据源        List<Person> persons = new ArrayList<Person>();        persons.add(new Person("张三", "上海 "));        persons.add(new Person("李四", "上海 "));        persons.add(new Person("王五", "北京"));        persons.add(new Person("赵六", "广州 "));//        Person p=new Person("","");//        p.getPersonName()//                p.getPersonAddress()        //  建立Adapter绑定数据源        MyAdapter _MyAdapter = new MyAdapter(this, persons);        //绑定Adapter        spinner2.setAdapter(_MyAdapter);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.button2:                Person p=(Person) spinner2.getSelectedItem();                Toast.makeText(Main2Activity.this, "当前选中的是:"+p.getPersonName()                        , Toast.LENGTH_LONG).show();                break;            default:                break;        }    }}

package com.example.administrator.spinner;import android.widget.BaseAdapter;import java.util.List;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;/** * Created by Administrator on 2016/9/28. */public class MyAdapter extends BaseAdapter{    private List<Person> mList;    private Context mContext;    public MyAdapter(Context pContext, List<Person> pList) {        this.mContext = pContext;        this.mList = pList;    }    @Override    public int getCount() {        return mList.size();    }    @Override    public Object getItem(int position) {        return mList.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    /**     * 下面是重要代码     */    @Override    public View getView(int position, View convertView, ViewGroup parent) {        LayoutInflater _LayoutInflater=LayoutInflater.from(mContext);        convertView=_LayoutInflater.inflate(R.layout.item_custom, null);        if(convertView!=null) {            ImageView imageView = (ImageView)convertView.findViewById(R.id.image);            imageView.setImageResource(R.mipmap.ic_launcher);            TextView _TextView1=(TextView)convertView.findViewById(R.id.textView1);            TextView _TextView2=(TextView)convertView.findViewById(R.id.textView2);            _TextView1.setText(mList.get(position).getPersonName());            _TextView2.setText(mList.get(position).getPersonAddress());        }        return convertView;    }}


package com.example.administrator.spinner;/** * Created by Administrator on 2016/9/28. */public class Person {    private String personName;    private String personAddress;    public Person(String personName, String personAddress) {        super();        this.personName = personName;        this.personAddress = personAddress;    }    public String getPersonName() {        return personName;    }    public void setPersonName(String personName) {        this.personName = personName;    }    public String getPersonAddress() {        return personAddress;    }    public void setPersonAddress(String personAddress) {        this.personAddress = personAddress;    }}
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.administrator.spinner.Main2Activity">    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="80dip"        android:orientation="vertical" >        <Spinner            android:id="@+id/spinner2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:spinnerMode="dialog" />    </LinearLayout>    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="调教"        android:id="@+id/button2"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true" /></RelativeLayout>    <!--android:spinnerMode="dialog" 选择spinner的显示样式-->
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textAppearance="?android:attr/textAppearanceLarge"        android:text="Large Text"        android:id="@+id/textView1"        android:layout_gravity="center_horizontal"        android:layout_alignBottom="@+id/image"        android:layout_toRightOf="@+id/image"        android:layout_toEndOf="@+id/image"        android:layout_marginLeft="34dp"        android:layout_marginStart="34dp" />    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:background="@mipmap/ic_launcher"        android:id="@+id/image" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textAppearance="?android:attr/textAppearanceLarge"        android:text="Large Text"        android:id="@+id/textView2"        android:layout_gravity="center_horizontal"        android:layout_alignBottom="@+id/textView1"        android:layout_toRightOf="@+id/textView1"        android:layout_toEndOf="@+id/textView1" /></RelativeLayout>

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