Android实现多层级Spinner列表选项实时更新树形层级

矫情吗；* 2024-02-17 16:29 40阅读 0赞

**Android实现多层级Spinner列表选项实时更新树形层级**

运行结果如图：

![Center][]

Java代码：

package com.example.spinnerdemo;
    
    import android.os.Bundle;
    import android.app.Activity;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.Spinner;
    
    public class MainActivity extends Activity {
    
    	private Spinner provinceSpinner = null; // 省（省、直辖市）
    	private Spinner citySpinner = null; // 市
    	private Spinner countrySpinner = null; // 区
    
    	private ArrayAdapter<String> provinceAdapter = null; // 省
    	private ArrayAdapter<String> cityAdapter = null; // 市
    	private ArrayAdapter<String> countryAdapter = null; // 区
    
    	private int provincePosition = 3;
    
    	// 省级选项值
    	private String[] province = new String[] { "北京", "上海", "天津", "广东" };// ,"重庆","黑龙江","江苏","山东","浙江","香港","澳门"};
    
    	// 市级选项值
    	private String[][] city = new String[][] {
    			{ "东城区", "西城区", "崇文区", "宣武区", "朝阳区", "海淀区", "丰台区", "石景山区", "门头沟区","房山区", "通州区", "顺义区", "大兴区", "昌平区", "平谷区", "怀柔区", "密云县","延庆县" },
    			{ "长宁区", "静安区", "普陀区", "闸北区", "虹口区" },
    			{ "和平区", "河东区", "河西区", "南开区", "河北区", "红桥区", "塘沽区", "汉沽区", "大港区","东丽区" }, 
    			{ "广州", "深圳", "韶关" // ,"珠海","汕头","佛山","湛江","肇庆","江门","茂名","惠州","梅州",
    			// "汕尾","河源","阳江","清远","东莞","中山","潮州","揭阳","云浮"
    			} };
    
    	// 区县级选项值
    	private String[][][] country = new String[][][] 
                {
                        {   //北京
                            {"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},
                            {"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"}
                        },
                        {    //上海
                            {"无"},{"无"},{"无"},{"无"},{"无"}
                        },
                        {    //天津
                            {"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"},{"无"}
                        },
                        {    //广东
                            {"海珠区","荔湾区","越秀区","白云区","萝岗区","天河区","黄埔区","花都区","从化市","增城市","番禺区","南沙区"}, //广州
                            {"宝安区","福田区","龙岗区","罗湖区","南山区","盐田区"}, //深圳
                            {"武江区","浈江区","曲江区","乐昌市","南雄市","始兴县","仁化县","翁源县","新丰县","乳源县"}  //韶关
                        }
                };
    
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		
    		setContentView(R.layout.activity_main);
    
    		provinceSpinner = (Spinner) findViewById(R.id.spinner_province);
    		citySpinner = (Spinner) findViewById(R.id.spinner_city);
    		countrySpinner = (Spinner) findViewById(R.id.spinner_country);
    
    		// 装载适配器和值
    		provinceAdapter = new ArrayAdapter<String>(this,
    				android.R.layout.simple_spinner_item, province);
    		provinceSpinner.setAdapter(provinceAdapter);
    
    		cityAdapter = new ArrayAdapter<String>(this,
    				android.R.layout.simple_spinner_item, city[3]);
    		citySpinner.setAdapter(cityAdapter);
    
    		countryAdapter = new ArrayAdapter<String>(this,
    				android.R.layout.simple_spinner_item, country[3][0]);
    		countrySpinner.setAdapter(countryAdapter);
    
    		// 省下拉框监听
    		provinceSpinner
    				.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    
    					@Override
    					public void onItemSelected(AdapterView<?> arg0, View arg1,
    							int position, long arg3) {
    
    						cityAdapter = new ArrayAdapter<String>(
    								getApplication(),
    								android.R.layout.simple_spinner_item,
    								city[position]);
    						citySpinner.setAdapter(cityAdapter);
    
    						provincePosition = position; // 记录当前省级序号，留给下面修改县级适配器时用
    					}
    
    					@Override
    					public void onNothingSelected(AdapterView<?> arg0) {
    
    					}
    
    				});
    
    		// 市级下拉监听
    		citySpinner
    				.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    
    					@Override
    					public void onItemSelected(AdapterView<?> arg0, View arg1,
    							int position, long arg3) {
    						countryAdapter = new ArrayAdapter<String>(
    								getApplication(),
    								android.R.layout.simple_spinner_item,
    								country[provincePosition][position]);
    						countrySpinner.setAdapter(countryAdapter);
    					}
    
    					@Override
    					public void onNothingSelected(AdapterView<?> arg0) {
    
    					}
    				});
    	}
    }

布局文件：

备注：本文整理自网络，原作者不详。  
  
  
附录我写的参考文章：  
《Android Spinner的ArrayAdapter和SpinnerAdapter注意事项》链接地址：http://blog.csdn.net/zhangphil/article/details/49907285

[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/edc69f7fc2b94a218f07a2079e758cb0.png