Android的常用控件总结(二)

4、得到Spinner对象，并设置数据

spinner = (Spinner)findViewById(R.id.spinnerld);
spinner.setAdapter(adapter);
spinner.setPrompt("测试");

5、创建一个监听器，绑定在一起
spinner.setOnItemSelectedListener(new SpinnerOnSelectedListener());

6、监听器中的方法
SpinnerOnSelectedListener implements OnItemSelectedListener{
@override
onItemSelected(AdapterView< > adapterView,View view,int position,long id){
String selected = adapterView.getItemAtPosition(position).toString();
System.out.println(selected);
}

@override
onNothingSelected(AdapterView< > adapterView){
System.out.println("nothingSelected");
}
}

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ArrayAdapter的另一种用法：动态的创建ArrayAdapter

1、创建item.xml布局文件

2、List list = new ArrayList();
list.add("test1");
list.add("test2");
ArrayAdapter adapter = new
ArrayAdapter(this,R.layout.item,R.id.textViewld,list);