4.8 自定义下拉菜单模式--Spinner与setDropDownViewResource

先贴上代码.

package edu.cquptzx.Spinner;

import android.app.Activity;

import android.os.Bundle;

import android.view.MotionEvent;

import android.view.View;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

import android.widget.TextView;

publicclass SpinnerActivity extends Activity {

privatestaticfinal String[] countriesStr = {"北京市","上海市","天津市","重庆市"};

private TextView myTextView;

private Spinner mySpinner;

private ArrayAdapter<String> madapter ;

Animation mAnimation;

/** Called when the activity is first created. */

@Override

publicvoid onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//根据Id获得对象;

myTextView = (TextView) findViewById(R.id.textView1);

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

//新建适配器

madapter = new ArrayAdapter<String>(this,

android.R.layout.simple_spinner_item,countriesStr);

//自定义下拉菜单样式定义在/layout下.

madapter.setDropDownViewResource(R.layout.layout_dropdown);

//ArrayAdapter添加到Spinner对象中.

mySpinner.setAdapter(madapter);

//将myspinner添加到OnItemSelectedListener

mySpinner.setOnItemSelectedListener

(new Spinner.OnItemSelectedListener()

{

@Override

publicvoid onItemSelected(AdapterView<?> parent, View view, int position, long id)

{

//将所选mySpinner的值赋值给TextView

myTextView.setText("选择的是" + countriesStr[position]);

//显示Spinner

view.setVisibility(View.VISIBLE);

}

@Override

publicvoid onNothingSelected(AdapterView<?> parent) {

// TODO Auto-generated method stub

}

}

);

//取得Animation定义目录下文件

mAnimation = AnimationUtils.loadAnimation(this, R.anim.my_anim);

//为mySpinner添加OnTouchListener

mySpinner.setOnTouchListener(new Spinner.OnTouchListener()

{

publicboolean onTouch(View v, MotionEvent event)

{

//设置动画

v.startAnimation(mAnimation);

//隐藏mySpinner

//v.setVisibility(View.INVISIBLE);

returnfalse;

}

});

}

}