Android如何愉快的使用Spinner列表选择框
Android如何愉快的使用Spinner列表选择框
说实话 我刚学习的时候，感觉这就是网页上的select标签，不过，这个标签可以带图，哈哈
是不是感觉像
又到了我们粘贴代码的时间了
布局文件：activity_main.xml
<LinearLayout 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:orientation="vertical"
android:padding="5dp"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="选择您的排位分段"
android:textColor="#44BDED"
android:textSize="18sp" />
<Spinner
android:id="@+id/spin_one"
android:layout_width="100dp"
android:layout_height="64dp"
android:entries="@array/data"
android:prompt="@string/spin_title"
android:spinnerMode="dialog" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="选择你的拿手英雄~"
android:textColor="#F5684A"
android:textSize="18sp" />
<Spinner
android:id="@+id/spin_two"
android:layout_width="wrap_content"
android:layout_height="64dp" />
LinearLayout>展示视图控制文件：MainActivity
package run.yang.com.spinnerherodemo;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
private Spinner spin_one;
private Spinner spin_two;
private Context mContext;
//判断是否为刚进去时触发onItemSelected的标志
private boolean one_selected = false;
private boolean two_selected = false;
private ArrayList mData = null;
private BaseAdapter myAdadpter = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = MainActivity.this;
mData = new ArrayList();
bindViews();
}
private void bindViews() {
spin_one = (Spinner) findViewById(R.id.spin_one);
spin_two = (Spinner) findViewById(R.id.spin_two);
mData.add(new Hero(R.mipmap.iv_lol_icon1,"迅捷斥候：提莫（Teemo）"));
mData.add(new Hero(R.mipmap.iv_lol_icon2,"诺克萨斯之手：德莱厄斯（Darius）"));
mData.add(new Hero(R.mipmap.iv_lol_icon3,"无极剑圣：易（Yi）"));
mData.add(new Hero(R.mipmap.iv_lol_icon4,"德莱厄斯：德莱文（Draven）"));
mData.add(new Hero(R.mipmap.iv_lol_icon5,"德邦总管：赵信（XinZhao）"));
mData.add(new Hero(R.mipmap.iv_lol_icon6,"狂战士：奥拉夫（Olaf）"));
myAdadpter = new MyAdapter(mData,R.layout.item_spin_hero) {
@Override
public void bindView(ViewHolder holder, Hero obj) {
holder.setImageResource(R.id.img_icon,obj.gethIcon());
holder.setText(R.id.txt_name, obj.gethName());
}
};
spin_two.setAdapter(myAdadpter);
spin_one.setOnItemSelectedListener(this);
spin_two.setOnItemSelectedListener(this);
}
@Override
public void onItemSelected(AdapterView parent, View view, int position, long id) {
switch (parent.getId()){
case R.id.spin_one:
if(one_selected){
Toast.makeText(mContext,"您的分段是~：" + parent.getItemAtPosition(position).toString(),
Toast.LENGTH_SHORT).show();
}else one_selected = true;
break;
case R.id.spin_two:
if(two_selected){
TextView txt_name = (TextView) view.findViewById(R.id.txt_name);
Toast.makeText(mContext,"您选择的英雄是~：" + txt_name.getText().toString(),
Toast.LENGTH_SHORT).show();
}else two_selected = true;
break;
}
}
@Override
public void onNothingSelected(AdapterView parent) {
}
} 写个Hero.java，大家再不陌生吧
package run.yang.com.spinnerherodemo;
/**
* Created by yang_zzheng on 2016/7/15
* [email protected]
*/
public class Hero {
private int hIcon;
private String hName;
public Hero() {
}
public Hero(int hIcon, String hName) {
this.hIcon = hIcon;
this.hName = hName;
}
public int gethIcon() {
return hIcon;
}
public String gethName() {
return hName;
}
public void sethIcon(int hIcon) {
this.hIcon = hIcon;
}
public void sethName(String hName) {
this.hName = hName;
}
}
万能的BaseAdapter—->MyAdapter.java
package run.yang.com.spinnerherodemo;
import android.content.Context;
import android.util.SparseArray;
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.ArrayList;
/**
* Created by yang_zzheng on 2016/7/15
* [email protected]
*/
public abstract class MyAdapter extends BaseAdapter {
private ArrayList mData;
private int mLayoutRes; //布局id
public MyAdapter() {
}
public MyAdapter(ArrayList mData, int mLayoutRes) {
this.mData = mData;
this.mLayoutRes = mLayoutRes;
}
@Override
public int getCount() {
return mData != null ? mData.size() : 0;
}
@Override
public T getItem(int position) {
return mData.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = ViewHolder.bind(parent.getContext(), convertView, parent, mLayoutRes
, position);
bindView(holder, getItem(position));
return holder.getItemView();
}
public abstract void bindView(ViewHolder holder, T obj);
//添加一个元素
public void add(T data) {
if (mData == null) {
mData = new ArrayList<>();
}
mData.add(data);
notifyDataSetChanged();
}
//往特定位置，添加一个元素
public void add(int position, T data) {
if (mData == null) {
mData = new ArrayList<>();
}
mData.add(position, data);
notifyDataSetChanged();
}
public void remove(T data) {
if (mData != null) {
mData.remove(data);
}
notifyDataSetChanged();
}
public void remove(int position) {
if (mData != null) {
mData.remove(position);
}
notifyDataSetChanged();
}
public void clear() {
if (mData != null) {
mData.clear();
}
notifyDataSetChanged();
}
public static class ViewHolder {
private SparseArray mViews; //存储ListView 的 item中的View
private View item; //存放convertView
private int position; //游标
private Context context; //Context上下文
//构造方法，完成相关初始化
private ViewHolder(Context context, ViewGroup parent, int layoutRes) {
mViews = new SparseArray<>();
this.context = context;
View convertView = LayoutInflater.from(context).inflate(layoutRes, parent, false);
convertView.setTag(this);
item = convertView;
}
//绑定ViewHolder与item
public static ViewHolder bind(Context context, View convertView, ViewGroup parent,
int layoutRes, int position) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder(context, parent, layoutRes);
} else {
holder = (ViewHolder) convertView.getTag();
holder.item = convertView;
}
holder.position = position;
return holder;
}
@SuppressWarnings("unchecked")
public T getView(int id) {
T t = (T) mViews.get(id);
if (t == null) {
t = (T) item.findViewById(id);
mViews.put(id, t);
}
return t;
}
/**
* 获取当前条目
*/
public View getItemView() {
return item;
}
/**
* 获取条目位置
*/
public int getItemPosition() {
return position;
}
/**
* 设置文字
*/
public ViewHolder setText(int id, CharSequence text) {
View view = getView(id);
if (view instanceof TextView) {
((TextView) view).setText(text);
}
return this;
}
/**
* 设置图片
*/
public ViewHolder setImageResource(int id, int drawableRes) {
View view = getView(id);
if (view instanceof ImageView) {
((ImageView) view).setImageResource(drawableRes);
} else {
view.setBackgroundResource(drawableRes);
}
return this;
}
/**
* 设置点击监听
*/
public ViewHolder setOnClickListener(int id, View.OnClickListener listener) {
getView(id).setOnClickListener(listener);
return this;
}
/**
* 设置可见
*/
public ViewHolder setVisibility(int id, int visible) {
getView(id).setVisibility(visible);
return this;
}
/**
* 设置标签
*/
public ViewHolder setTag(int id, Object obj) {
getView(id).setTag(obj);
return this;
}
//其他方法可自行扩展
}
}
当然少不了我们的列表项目布局item_spin_hero.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="5dp">
<ImageView
android:id="@+id/img_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:src="@mipmap/iv_lol_icon1" />
<TextView
android:id="@+id/txt_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="15dp"
android:text="德玛西亚"
android:textSize="16sp" />
LinearLayout>单纯的数组资源myarrays.xml
<resources>
<string-array name="data">
<item>英勇青铜item>
<item>不屈白银item>
<item>荣耀黄金item>
<item>华贵铂金item>
<item>璀璨钻石item>
<item>超凡大师item>
<item>最强王者item>
string-array>
resources>
strings.xml这个不用解释吧
<string name="app_name">SpinnerHeroDemostring>
<string name="action_settings">Settingsstring>
<string name="spin_title">分段选择string>
本文参考：
http://blog.csdn.net/coder_pig/article/details/48711881