android： WheelView组件(滑轮组件)的应用！
android前段组件中， 填表单，选择条目 的样式有很多， WheelView滚动组件为其中一种，如下图所示：
前两种大家很多都用过， 不过我修改了一下，弄出第三种，希望能帮助到大家：
EditText category = (EditText) findViewById(R.id.editCategory);
category.setOnClickListener(listener);
private OnClickListener listener = new OnClickListener() {
@Override
public void onClick(View v) {
// 创建会话框
final AlertDialog dialog = new AlertDialog.Builder(
Set_accountActivity.this).create();
dialog.setTitle("消费类别：");
// 创建布局
final LinearLayout ll = new LinearLayout(Set_accountActivity.this);
// 设置布局方式：水平
ll.setOrientation(LinearLayout.HORIZONTAL);
final WheelView category1 = new WheelView(Set_accountActivity.this);
category1.setVisibleItems(5);
category1.setCyclic(true);
category1.setAdapter(new ArrayWheelAdapter<String>(category_str1));
final WheelView category2 = new WheelView(Set_accountActivity.this);
category2.setVisibleItems(5);
category2.setCyclic(true);
category2
.setAdapter(new ArrayWheelAdapter<String>(category_str2[0]));
// 创建参数
LinearLayout.LayoutParams lp1 = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lp1.gravity = Gravity.LEFT;
//lp1.weight = (float) 0.6;
LinearLayout.LayoutParams lp2 = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lp2.weight = (float) 0.6;
lp2.gravity = Gravity.RIGHT;
lp2.leftMargin = 10;
ll.addView(category1, lp1);
ll.addView(category2, lp2);
// 为category1添加监听
category1.addChangingListener(new OnWheelChangedListener() {
public void onChanged(WheelView wheel, int oldValue,
int newValue) {
category2.setAdapter(new ArrayWheelAdapter<String>(
category_str2[newValue]));
category2
.setCurrentItem(category_str2[newValue].length / 2);
}
});
// 为会话创建确定按钮
dialog.setButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String cat1 = category_str1[category1.getCurrentItem()];
String cat2 = category_str2[category1.getCurrentItem()][category2
.getCurrentItem()];
category.setText(cat1 + ">>" + cat2);
dialog.dismiss();
}
});
dialog.setButton2("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
dialog.setView(ll);
dialog.show();
}
};
public String category_str1[] = new String[] { " 餐饮 ", " 交通 ",
" 购物 ", " 娱乐 ", " 医疗 ", " 教育 ", " 居家 ", " 投资 ",
" 人情 " };
public String category_str2[][] = new String[][] {
new String[] { " 早餐 ", " 午餐 ", " 晚餐 ", " 夜宵 ", "饮料水果",
" 零食 ", "蔬菜原料", "油盐酱醋", "其他.." },
new String[] { "地铁", "公交", "打的", "加油", "停车", "过路过桥", "罚款", "包养维修",
"火车", "车款车贷", "车险", "航空", "船舶", "自行车", "其他.." },
new String[] { "服装鞋帽", "日用百货", "婴幼用品", "数码产品", "化妆护肤", "首饰", "烟酒",
"电器", "家具", "书籍", "玩具", "摄影文印", "其他.." },
new String[] { "看电影", "KTV", "网游电玩", "运动健身", "洗浴足浴", "茶酒咖啡",
"旅游度假", "演出", "其他.." },
new String[] { "求医", "买药", "体检", "化验", "医疗器材", "其他.." },
new String[] { "培训", "考试", "书籍", "学杂费", "家教", "补习", "助学贷款", "其他.." },
new String[] { "美容美发", "手机电话", "宽带", "房贷", "水电燃气", "物业", "住宿租房",
"保险费", "贷款", "材料建材", "家政服务", "快递邮政", "漏记款", "其他.." },
new String[] { "证券期货", "保险", "外汇", "出资", "黄金实物", "书画艺术", "投资贷款",
"利息支出", "其他.." },
new String[] { "礼金", "物品", "慈善捐款", "代付款", "其他.." }, };
这个组件第二个滚动选择列表会跟随第一个选择列表变， 依赖一些核心代码，核心代码在附件中，大家下载吧（WheelView基础类.zip）；
所需依赖文件下载地址：
http://download.csdn.net/download/cjwdts/5681237 ：WheelView依赖的java类
http://download.csdn.net/download/cjwdts/5681241：依赖的drawable文件