省市县三级菜单联动选择器

public class MainActivity extends Activity {

private Spinner provinceSpinner = null; // 省级(省、直辖市)

private Spinner citySpinner = null; // 地级市

private Spinner countySpinner = null; // 县级(区、县、县级市)

ArrayAdapter<String> provinceAdapter = null; // 省级适配器

ArrayAdapter<String> cityAdapter = null; // 地级适配器

ArrayAdapter<String> countyAdapter = null; // 县级适配器

static 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"};

// 地级选项值

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"

} };

// 县级选项值

private String[][][] county = 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);

setSpinner();

}







/*

* 设置下拉框

*/

private void setSpinner() {

provinceSpinner = (Spinner) findViewById(R.id.spin_province);

citySpinner = (Spinner) findViewById(R.id.spin_city);

countySpinner = (Spinner) findViewById(R.id.spin_county);

// 绑定适配器和值

provinceAdapter = new ArrayAdapter<String>(MainActivity.this,

android.R.layout.simple_spinner_item, province);

provinceSpinner.setAdapter(provinceAdapter);

provinceSpinner.setSelection(3, true); // 设置默认选中项,此处为默认选中第4个值

cityAdapter = new ArrayAdapter<String>(MainActivity.this,

android.R.layout.simple_spinner_item, city[3]);

citySpinner.setAdapter(cityAdapter);

citySpinner.setSelection(0, true); // 默认选中第0个

countyAdapter = new ArrayAdapter<String>(MainActivity.this,

android.R.layout.simple_spinner_item, county[3][0]);

countySpinner.setAdapter(countyAdapter);

countySpinner.setSelection(0, true);

// 省级下拉框监听

provinceSpinner

.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

// 表示选项被改变的时候触发此方法,主要实现办法:动态改变地级适配器的绑定值

@Override

public void onItemSelected(AdapterView<?> arg0, View arg1,

int position, long arg3) {

// position为当前省级选中的值的序号

// 将地级适配器的值改变为city[position]中的值

cityAdapter = new ArrayAdapter<String>(

MainActivity.this,

android.R.layout.simple_spinner_item,

city[position]);

// 设置二级下拉列表的选项内容适配器

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) {

}

});

// 地级下拉监听

citySpinner

.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

@Override

public void onItemSelected(AdapterView<?> arg0, View arg1,

int position, long arg3) {

countyAdapter = new ArrayAdapter<String>(

MainActivity.this,

android.R.layout.simple_spinner_item,

county[provincePosition][position]);

countySpinner.setAdapter(countyAdapter);

}

@Override

public void onNothingSelected(AdapterView<?> arg0) {

}

});

}





//
要获取下拉框spinner中选中的值,用下面这方法就OK
 

//
provinceSpinner.getSelectedItem().toString();
 

//
citySpinner.getSelectedItem().toString();
 

//
countySpinner.getSelectedItem().toString();

}

<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="wrap_content"
    android:orientation="horizontal"
    android:padding="8dp" >
    <Spinner
        android:id="@+id/spin_province"
        android:layout_width="80dp"
        android:layout_height="wrap_content" />
 
    <Spinner
        android:id="@+id/spin_city"
        android:layout_width="112dp"
        android:layout_height="wrap_content" />
 
    <Spinner
        android:id="@+id/spin_county"
        android:layout_width="100dp"
        android:layout_height="wrap_content" />
</LinearLayout>

THE END
< <上一篇
下一篇>>