Android下拉列表控件spinner-andoid学习之旅（十一）

直接上代码：

package peng.liu.testview;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;

public class MainActivity extends Activity {
private Spinner spinner;
String[] data = new String[]{"android","hello","world"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spinner = (Spinner) findViewById(R.id.spinner);
spinner.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data));
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(MainActivity.this,data[i],Toast.LENGTH_LONG).show();
}

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

}
});
}
}

布局代码

<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="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:orientation="vertical">

<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/spinner" />
</LinearLayout>