Android spinner 的使用

本篇构造spiner使用了两种方式，一种是默认的视图一种是自定义的视图
这里放两张效果图

因为这是项目直接截图，可能有些没用的代码，大家看有用的吧
1：默认的模式
这是activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android&quot;

xmlns:tools="http://schemas.android.com/tools&quot;

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

tools:context=".MainActivity">

&lt;Spinner
    android:id=&quot;@+id/spinner&quot;
    android:layout_width=&quot;match_parent&quot;
    android:layout_height=&quot;wrap_content&quot;&gt;

&lt;/Spinner&gt;
</LinearLayout>

package com.centaur.uiset;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.Spinner;
import java.util.ArrayList;

import java.util.List;
public class MainActivity extends Activity  {

private Spinner mspinner;

private  String[] mDatas;

private List<SpinnerItemData> mDatasList= new ArrayList<SpinnerItemData>();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mspinner = (Spinner) findViewById(R.id.spinner);

initSpinner();

}

private void initSpinner() {

//建立数据源

mDatas = getResources().getStringArray(R.array.label);

//构建适配器

ArrayAdapter<String>  madapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,mDatas);

//绑定适配器

mspinner.setAdapter(madapter);

}

}

</pre><pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android&quot;

android:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="wrap_content">

<LinearLayout

android:layout_width="match_parent"

android:background="#ff6b6b6b"

android:layout_height="1px"></LinearLayout>

<LinearLayout

android:paddingRight="13dp"

android:paddingLeft="40dp"

android:paddingTop="4dp"

android:paddingBottom="4dp"

android:layout_width="match_parent"

android:layout_height="wrap_content">

<ImageView

android:id="@+id/spinnerimageview"

android:layout_width="40dp"

android:layout_height="40dp" />

<TextView

android:id="@+id/spinnertextview"

android:text="编程"

android:textSize="20sp"

android:layout_marginLeft="40dp"

android:layout_gravity="center_vertical"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />

&lt;/LinearLayout&gt;
</LinearLayout>

package com.centaur.uiset;

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;
import java.util.List;
/**


Created by Tianchaoxiong on 2015/5/10.

*/

public class SpinnerAdapter extends BaseAdapter {

private LayoutInflater mInflater;

private List<SpinnerItemData> mdatas;

private Context mContext;

public SpinnerAdapter(Context mContext,List<SpinnerItemData> mdatas){

this.mInflater = LayoutInflater.from(mContext);

this.mContext =mContext;

this.mdatas = mdatas;

}

@Override

public int getCount() {

return mdatas.size();

}
@Override

public Object getItem(int position) {

return mdatas.get(position);

}
@Override

public long getItemId(int position) {

return position;

}
@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder holder;

///View view = null;

SpinnerItemData spinnerItemData = mdatas.get(position);

if (convertView == null) {

convertView = mInflater.inflate(R.layout.spinneritem, null);
    holder = new ViewHolder();
    /*得到各个控件的对象*/
    holder.mImageView = (ImageView) convertView.findViewById(R.id.spinnerimageview);
    holder.mTextView = (TextView) convertView.findViewById(R.id.spinnertextview);
    convertView.setTag(holder);//绑定ViewHolder对象
}
else {
    holder = (ViewHolder) convertView.getTag();//取出ViewHolder对象
}
  /*设置TextView显示的内容，即我们存放在动态数组中的数据*/
holder.mImageView.setImageResource(spinnerItemData.getImage());
holder.mTextView.setText(spinnerItemData.getLebel());
return convertView;
}

/存放控件/

public final class ViewHolder{

public ImageView mImageView;

public TextView mTextView;

}

}

package com.centaur.uiset;



import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.Spinner;
import java.util.ArrayList;

import java.util.List;
public class MainActivity extends Activity  {

private Spinner mspinner;

private  String[] mDatas;

private List<SpinnerItemData> mDatasList= new ArrayList<SpinnerItemData>();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mspinner = (Spinner) findViewById(R.id.spinner);

//建立数据源

initDatas();

//构建适配器

SpinnerAdapter adapter = new SpinnerAdapter(MainActivity.this,mDatasList);

//绑定适配器

mspinner.setAdapter(adapter);
    //initSpinner();

}

private void initDatas() {
    //拿到text内容
    mDatas = getResources().getStringArray(R.array.label);
    //拿到image内容
    for(int i = 0; i&lt;26;i++){
        int tmp = i+&#39;a&#39;;
        String str = &quot;label&quot;+(char)tmp;
        int imageId = getResources().getIdentifier(str, &quot;raw&quot;, getPackageName());
        SpinnerItemData spinnerItemData = new SpinnerItemData(imageId,mDatas[i]);
        mDatasList.add(spinnerItemData);
    }
}

private void initSpinner() {
    //建立数据源
    mDatas = getResources().getStringArray(R.array.label);
    //构建适配器
    ArrayAdapter&lt;String&gt;  madapter = new ArrayAdapter&lt;String&gt;(this,android.R.layout.simple_spinner_item,mDatas);
    //绑定适配器
    mspinner.setAdapter(madapter);
}
}