Android实现多层级Spinner列表选项实时更新树形层级

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：

Java代码：

[java] view plain copy

packagecom.example.spinnerdemo;
importandroid.os.Bundle;
importandroid.app.Activity;
importandroid.view.View;
importandroid.widget.AdapterView;
importandroid.widget.ArrayAdapter;
importandroid.widget.Spinner;
publicclassMainActivityextendsActivity{
privateSpinnerprovinceSpinner=null;//省（省、直辖市）
privateSpinnercitySpinner=null;//市
privateSpinnercountrySpinner=null;//区
privateArrayAdapter<String>provinceAdapter=null;//省
privateArrayAdapter<String>cityAdapter=null;//市
privateArrayAdapter<String>countryAdapter=null;//区
privateintprovincePosition=3;
//省级选项值
privateString[]province=newString[]{"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
privateString[][]city=newString[][]{
{"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
privateString[][][]country=newString[][][]
{
{//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
protectedvoidonCreate(BundlesavedInstanceState){
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=newArrayAdapter<String>(this,
android.R.layout.simple_spinner_item,province);
provinceSpinner.setAdapter(provinceAdapter);
cityAdapter=newArrayAdapter<String>(this,
android.R.layout.simple_spinner_item,city[3]);
citySpinner.setAdapter(cityAdapter);
countryAdapter=newArrayAdapter<String>(this,
android.R.layout.simple_spinner_item,country[3][0]);
countrySpinner.setAdapter(countryAdapter);
//省下拉框监听
provinceSpinner
.setOnItemSelectedListener(newAdapterView.OnItemSelectedListener(){
@Override
publicvoidonItemSelected(AdapterView<?>arg0,Viewarg1,
intposition,longarg3){
cityAdapter=newArrayAdapter<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
publicvoidonNothingSelected(AdapterView<?>arg0){
}
});
//市级下拉监听
citySpinner
.setOnItemSelectedListener(newAdapterView.OnItemSelectedListener(){
@Override
publicvoidonItemSelected(AdapterView<?>arg0,Viewarg1,
intposition,longarg3){
countryAdapter=newArrayAdapter<String>(
getApplication(),
android.R.layout.simple_spinner_item,
country[provincePosition][position]);
countrySpinner.setAdapter(countryAdapter);
}
@Override
publicvoidonNothingSelected(AdapterView<?>arg0){
}
});
}
}
布局文件：

[html] view plain copy
1. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
2. xmlns:tools="http://schemas.android.com/tools"
3. android:layout_width="match_parent"
4. android:layout_height="match_parent"
5. android:background="#e0e0e0"
6. android:orientation="horizontal">
7. <Spinner
8. android:id="@+id/spinner_province"
9. android:layout_width="0dip"
10. android:layout_weight="1"
11. android:layout_height="wrap_content"/>
13. <Spinner
14. android:id="@+id/spinner_city"
15. android:layout_width="0dip"
16. android:layout_weight="1"
17. android:layout_height="wrap_content"/>
19. <Spinner
20. android:id="@+id/spinner_country"
21. android:layout_width="0dip"
22. android:layout_weight="1"
23. android:layout_height="wrap_content"/>
24. </LinearLayout>

更多相关文章

随机推荐