Android PopupWindow嵌套ListView（仿照分类下拉菜单效果）_Android

Android PopupWindow嵌套ListView（模仿分类下拉菜单效果）

1:布局文件

[java] view plaincopyprint?

<span style="font-size:18px;"><RelativeLayout 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"
>
<TextView
android:id="@+id/tv_text_age"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/choolse_bg"
android:text="不限"
android:paddingLeft="12dp"
android:textColor="#9d72d2"
android:layout_centerInParent="true"
android:gravity="center_vertical"
/>
</RelativeLayout></span>

[html] view plaincopyprint?

package com.jackie.popupwindow;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener {
private TextView tv_text_age;
private PopupWindow pop;
ListView listView = null;
private List<String> datas;
private SelectAgeAdapter mSelectAdapter;
private LayoutInflater inflater;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initData();
inflater = LayoutInflater.from(this);
tv_text_age = (TextView) findViewById(R.id.tv_text_age);
tv_text_age.setOnClickListener(this);
}
private void initData() {
datas = new ArrayList<String>();
for(int i = 0; i < 50; i++){
datas.add("HelloWorld - " + i);
}
}
@Override
public void onClick(View v) {
if(v.getId() == R.id.tv_text_age){
if(pop == null) {
listView = new ListView(this);
listView.setDividerHeight(1);
listView.setBackgroundResource(R.drawable.kge_feek_bg);
listView.setCacheColorHint(0x00000000);
mSelectAdapter = new SelectAgeAdapter();
pop = new PopupWindow(listView, tv_text_age.getWidth(), LayoutParams.WRAP_CONTENT, true);
}
listView.setAdapter(mSelectAdapter);
pop.setBackgroundDrawable(new ColorDrawable(Color.RED));
pop.showAsDropDown(tv_text_age, 0, 0);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
tv_text_age.setText(datas.get(position));
dismissPopWindow();
}
});
}
}
public void dismissPopWindow() {
if(pop != null && pop.isShowing()){
pop.dismiss();
}
}
class SelectAgeAdapter extends BaseAdapter {
@Override
public int getCount() {
return datas != null&&datas.size() > 0 ? datas.size() : 0;
}
@Override
public Object getItem(int position) {
return datas.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.item, null);
holder.tv_name = (TextView) convertView.findViewById(R.id.tv_name);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tv_name.setText(datas.get(position));
return convertView;
}
}
class ViewHolder {
TextView tv_name;
}
}