Android Spinner 仿 HTML Select

1、新建layout中新建布局文件main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"> <Spinnerandroid:id="@+id/spner" android:layout_width="wrap_content"android:layout_height="wrap_content"/> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button"/> <TextView android:id="@+id/text" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text=""/> </LinearLayout> 2、新建User模型类 public class User implements Serializable{ private static final long serialVersionUID = 6262838923156998909L; private String name; private String value; public User(){} public User(String name, String value) { super(); this.name = name; this.value = value; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getValue() { return value; } public void setValue(String value) { this.value = value; } @Override public String toString() { return name; } } 3、在Activity中实现代码绑定数据 public class MainActivity extends Activity { /** Called when the activity is first created. */ private Spinner mSpinner; private Button mButton; private TextView mTextView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mSpinner = (Spinner)findViewById(R.id.spner); mButton = (Button)findViewById(R.id.button); mTextView = (TextView)findViewById(R.id.text); List<User> users = new ArrayList<User>(); users.add(new User("why1","1")); users.add(new User("why2","2")); users.add(new User("why3","3")); users.add(new User("why4","4")); ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item, users); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); mSpinner.setAdapter(adapter); mButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { User user = (User)mSpinner.getSelectedItem(); mTextView.setText(user.getName() + " : " + user.getValue()); } }); } }

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