Android Spinner 的使用方法

//SpinnerActivity.java

package csie.stut.edu.tw;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;



public class SpinnerActivity extends Activity {
    /** Called when the activity is first created. */
Button button1;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        button1 = (Button)findViewById(R.id.button1);
        button1.setOnClickListener(button1_listener);
    }
 
    private Button.OnClickListener button1_listener = new Button.OnClickListener(){
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(SpinnerActivity.this, Spinner2Activity.class);
startActivity(intent);
}
    };
}

=================================================================

//Spinner2Activity.java

package csie.stut.edu.tw;

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ArrayAdapter;

import android.widget.EditText;

import android.widget.Spinner;

public class Spinner2Activity extends Activity {

Spinner spinner_c;

EditText edit_text1;

private ArrayList<String> allcountries;

private ArrayAdapter<String> aspnCountries;

private static final String[] mCountries = { "China", "Russia", "Germany",

"Japan", "Korea", "USA" };

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setTitle("Spinner2Activity");

setContentView(R.layout.spinner);

find_and_modify_view();

spinner_c.setOnItemSelectedListener(new OnItemSelectedListener() {

public void onItemSelected(AdapterView<?> parentView,

View selectedItemView, int position, long id) {

// your code here

edit_text1 = (EditText) findViewById(R.id.editText1);

edit_text1.setText(parentView.getSelectedItem().toString());

}

public void onNothingSelected(AdapterView<?> parentView) {

// your code here

}

});

}

private void find_and_modify_view() {

// TODO Auto-generated method stub

spinner_c = (Spinner) findViewById(R.id.spinner1);

allcountries = new ArrayList<String>();

for (int i = 0; i < mCountries.length; i++) {

allcountries.add(mCountries[i]);

}

aspnCountries = new ArrayAdapter<String>(this,

android.R.layout.simple_spinner_item, allcountries);

aspnCountries

.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

spinner_c.setAdapter(aspnCountries);

}

}

=================================================================

//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" >

    <TextView

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="@string/hello" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="啟動Spinner" >

    </Button>

</LinearLayout>

========================================================================

//spinner.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <EditText

        android:id="@+id/editText1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Spinner_1" >

        <requestFocus >

        </requestFocus>

    </EditText>

    <Spinner

        android:id="@+id/spinner1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

    </Spinner>

</LinearLayout>

======================================================================== 

//AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="csie.stut.edu.tw"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

    <application

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name" >

        <activity

            android:label="@string/app_name"

            android:name=".SpinnerActivity" >

            <intent-filter >

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity android:name="Spinner2Activity" >

        </activity>

    </application>

</manifest>

關於 小巴
	出現在網路上的小小部落客，白天是隱身在某某科大的學生，一到晚上就會現身在傳說中的秘密工作室。對於3C和網路有高度的熱情，偶爾研究APP、寫寫程式，是個最近很忙碌的學生。