废话不多说,直接上代码
strings.xml:
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="hello">Hello World, Hello!</string> <string name="app_name"></string> <string-array name="province"> <item >江苏省</item> <item >山东省</item> <item >浙江省</item> </string-array> </resources>
看一下布局文件main.xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" > <Spinner android:id="@+id/spinner1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:entries="@array/province"/> <Spinner android:id="@+id/spinner2" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> <TextView android:id="@+id/text" android:layout_width="match_parent" android:layout_height="wrap_content" > </TextView> </LinearLayout>
MainActivity代码如下:
package org.yayun.demo; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnFocusChangeListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.Spinner; import android.widget.TextView; public class MainActivity extends Activity { private Spinner spinner1; private Spinner spinner2; private TextView textView; private String[][] dataStrings = { { "南京市", "徐州市", "苏州市", "泰州市", "淮安市", }, { "济南市", "威海市", "临沂市", }, { "杭州市", "宁波市", "嘉兴市", }, }; private ArrayAdapter<CharSequence> adapter = null; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 生命周期方法 super.setContentView(R.layout.main); // 设置要使用的布局管理器 spinner1 = (Spinner) findViewById(R.id.spinner1); spinner2 = (Spinner) findViewById(R.id.spinner2); textView = (TextView) findViewById(R.id.text); spinner1.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { adapter = new ArrayAdapter<CharSequence>(MainActivity.this, android.R.layout.simple_spinner_item, dataStrings[position]);//根据position确定第二个spinner中要填充的数据 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);//设置显示样式 spinner2.setAdapter(adapter); } public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); } }
运行实例:
修改MainActivity.java代码:
package org.yayun.demo; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnFocusChangeListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.Spinner; import android.widget.TextView; public class MainActivity extends Activity { private Spinner spinner1; private Spinner spinner2; private TextView textView; private String[][] dataStrings = { { "南京市", "徐州市", "苏州市", "泰州市", "淮安市", }, { "济南市", "威海市", "临沂市", }, { "杭州市", "宁波市", "嘉兴市", }, }; private ArrayAdapter<CharSequence> adapter = null; String string1; String string2; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 生命周期方法 super.setContentView(R.layout.main); // 设置要使用的布局管理器 spinner1 = (Spinner) findViewById(R.id.spinner1); spinner2 = (Spinner) findViewById(R.id.spinner2); textView = (TextView) findViewById(R.id.text); spinner1.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { adapter = new ArrayAdapter<CharSequence>(MainActivity.this, android.R.layout.simple_spinner_item, dataStrings[position]);// 根据position确定第二个spinner中要填充的数据 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);// 设置显示样式 spinner2.setAdapter(adapter); string1 = parent.getItemAtPosition(position).toString();// 获取当前显示省份 } public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); spinner2.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { string2 = parent.getItemAtPosition(position).toString();// 获取当前显示省份 textView.setText(string1 + string2); } public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); } }
运行实例如下:
1.string1 = parent.getItemAtPosition(position).toString();// 获取当前显示省份
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Android实战简易教程-第二枪(Spinner下拉级联效果)
原文地址:http://blog.csdn.net/yayun0516/article/details/46274143