android注册用户地址实现省市区下拉框联动

<span style="font-size:18px;">要想实现省市区三联动首先要有 省市区的xml资源我用的是android studio，我把下载好的资源放到了res下新建的一个叫xml的文件夹中位置：</span>

<span style="font-size:18px;">用pull方式解析xml资源：</span>

<span style="font-size:18px;">//解析省</span>

<span style="background-color: rgb(255, 255, 255); font-family: 'Microsoft YaHei', SimSun, Verdana, Arial, Helvetica, sans-serif;"></span><pre name="code" class="java"> public void Getprovince(){
XmlResourceParser xrp=getResources().getXml(R.xml.provinces);//获取res下xml中的provinces.xml资源
try{
while(xrp.getEventType()!=XmlResourceParser.END_DOCUMENT){
if(xrp.getEventType()==XmlResourceParser.START_TAG){
String name=xrp.getName();
if(name.equals("Province")){
province.add(xrp.getAttributeValue(1));
}else if(xrp.getEventType()==XmlResourceParser.END_TAG){

}else if(xrp.getEventType()==XmlResourceParser.TEXT){

}
}
xrp.next();
}
}catch(XmlPullParserException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
}

//解析市

<pre name="code" class="java">public void Getcity(){
String flag="1";
String flag1="1";
XmlResourceParser xrp=getResources().getXml(R.xml.cities);<span style="font-family: 'Microsoft YaHei', SimSun, Verdana, Arial, Helvetica, sans-serif;">//获取res下xml中的citys.xml资源</span>
try{
List city=new ArrayList();
List id=new ArrayList();
while(xrp.getEventType()!=XmlResourceParser.END_DOCUMENT){
if(xrp.getEventType()==XmlResourceParser.START_TAG){
String name=xrp.getName();
if(name.equals("City")){
if(!flag1.equals(xrp.getAttributeValue(2))){
ID.put(flag1,id);
id=new ArrayList();
flag1=xrp.getAttributeValue(2);
}
id.add(xrp.getAttributeValue(0));
if(!flag.equals(xrp.getAttributeValue(2))){
City.put(flag,city);
city=new ArrayList();
flag=xrp.getAttributeValue(2);
}
city.add(xrp.getAttributeValue(1));
}else if(xrp.getEventType()==XmlResourceParser.END_TAG){

}else if(xrp.getEventType()==XmlResourceParser.TEXT){

}
}
xrp.next();
}
}catch(XmlPullParserException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
}

<pre name="code" class="java">public void Getdistric(){
String  flag="1";
XmlResourceParser xrp=getResources().getXml(R.xml.districts);<span style="font-family: 'Microsoft YaHei', SimSun, Verdana, Arial, Helvetica, sans-serif;">//获取res下xml中的districts.xml资源</span>
try{
List district=new ArrayList();
while(xrp.getEventType()!=XmlResourceParser.END_DOCUMENT){
if(xrp.getEventType()==XmlResourceParser.START_TAG){
String name=xrp.getName();
if(name.equals("District")){
if(!flag.equals(xrp.getAttributeValue(2))){
Distric.put(flag,district);
district=new ArrayList();
flag=xrp.getAttributeValue(2);
}
district.add(xrp.getAttributeValue(1));
}else if(xrp.getEventType()==XmlResourceParser.END_TAG){

}else if(xrp.getEventType()==XmlResourceParser.TEXT){
}
}
xrp.next();
}
}catch(XmlPullParserException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
}

<pre name="code" class="java">    List province=new ArrayList();
String flag;
Map<String,List> City=new HashMap<>();
Map<String,List> Distric=new HashMap<>();
Map<String,List> ID=new HashMap<>();

通过上面几个函数把省市区信息都保存到定义的这几个结构里面了。到此就剩下下拉框的创建并开始调用这几个结构啦。

这是layout里面的布局文件  <a target=_blank href="http://blog.csdn.net/greenappple/article/details/7046947">参考</a>

<pre style="background-color: rgb(255, 255, 255); font-family: 宋体; font-size: 9pt;"><<span style="color:#000080;"><strong>LinearLayout </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_height=</strong></span><span style="color:#008000;"><strong>"40dip"
</strong></span><span style="color:#008000;"><strong>    </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_width=</strong></span><span style="color:#008000;"><strong>"fill_parent"
</strong></span><span style="color:#008000;"><strong>    </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:id=</strong></span><span style="color:#008000;"><strong>"@+id/LinearLayoutArea" </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:orientation=</strong></span><span style="color:#008000;"><strong>"horizontal"</strong></span>>
<<span style="color:#000080;"><strong>Spinner </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:id=</strong></span><span style="color:#008000;"><strong>"@+id/spprovince" </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_width=</strong></span><span style="color:#008000;"><strong>"100dip"
</strong></span><span style="color:#008000;"><strong>        </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_height=</strong></span><span style="color:#008000;"><strong>"wrap_content"</strong></span>>
</<span style="color:#000080;"><strong>Spinner</strong></span>>
<<span style="color:#000080;"><strong>Spinner </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:id=</strong></span><span style="color:#008000;"><strong>"@+id/spcity" </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_width=</strong></span><span style="color:#008000;"><strong>"110dip"
</strong></span><span style="color:#008000;"><strong>        </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_height=</strong></span><span style="color:#008000;"><strong>"wrap_content"</strong></span>>
</<span style="color:#000080;"><strong>Spinner</strong></span>>
<<span style="color:#000080;"><strong>Spinner </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:id=</strong></span><span style="color:#008000;"><strong>"@+id/sparea" </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_width=</strong></span><span style="color:#008000;"><strong>"90dip"
</strong></span><span style="color:#008000;"><strong>        </strong></span><span style="color:#660e7a;"><strong>android</strong></span><span style="color:#0000ff;"><strong>:layout_height=</strong></span><span style="color:#008000;"><strong>"wrap_content"</strong></span>>
</<span style="color:#000080;"><strong>Spinner</strong></span>>
</<span style="color:#000080;"><strong>LinearLayout</strong></span>>

好啦，开始调用：参考

spprovince.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

adapter2 = new ArrayAdapter<String>(
MainActivity.this, android.R.layout.simple_spinner_item, City.get(String.valueOf(position)));
spcity.setAdapter(adapter2);
flag = String.valueOf(position);
}

@Override
public void onNothingSelected(AdapterView<?> parent) {

}
});
spcity.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

adapter3 = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, Distric.get(ID.get(flag).get(position)));
sparea.setAdapter(adapter3);

}
@Override
public void onNothingSelected(AdapterView<?> parent) {

}
});
sparea.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
txt.setText(spprovince.getSelectedItem().toString() + spcity.getSelectedItem().toString() + sparea.getSelectedItem().toString());
}

@Override
public void onNothingSelected(AdapterView<?> parent) {

}
});