AndroidにおけるPopupWindowの応用例

private TextView tv_appmanager_title;
private ListView lv_app_manager;
private LinearLayout ll_appmanager_loading;
private AppManagerProvider provider;
private List<AppManagerInfo> infos ;
private AppManagerAdapter adapter;
private PopupWindow localPopupWindow;

private Handler handler = new Handler(){
	
	public void handleMessage(android.os.Message msg) {
		switch (msg.what) {
		case Constants.MSG_APP_MANAGER:
			ll_appmanager_loading.setVisibility(View.INVISIBLE);
			adapter = new AppManagerAdapter(infos, AppManagerActivity.this);	
			lv_app_manager.setAdapter(adapter);
			break;

		}
	};
};

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.appmanager);
	
	lv_app_manager = (ListView) this.findViewById(R.id.lv_app_manager);
	ll_appmanager_loading = (LinearLayout) this.findViewById(R.id.ll_appmanager_loading);
	ll_appmanager_loading.setVisibility(View.VISIBLE);
	
	
	new Thread(){
		public void run() {
			provider = new AppManagerProvider(AppManagerActivity.this);
			infos = provider.getAppManagerInfo();
			Message msg = new Message();
			msg.what = Constants.MSG_APP_MANAGER;
			handler.sendMessage(msg);
		};
	}.start();
	
	lv_app_manager.setOnItemClickListener(new OnItemClickListener() {

		@Override
		public void onItemClick(AdapterView<?> parent, View view,
				int position, long id) {
			
			if(null != localPopupWindow){
				localPopupWindow.dismiss();
				localPopupWindow = null;
			}
			
			int [] location = new int[2];
			view.getLocationInWindow(location);
			
			int x = location[0] + 60;
			int y = location[1];
			
			TextView tv = new TextView(AppManagerActivity.this);
			AppManagerInfo info = (AppManagerInfo) lv_app_manager.getItemAtPosition(position);
			tv.setText(info.getPackName());
			tv.setTextSize(20);
			tv.setTextColor(Color.RED);
			
			localPopupWindow = new PopupWindow(tv, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
			Drawable background = new ColorDrawable(Color.GRAY);
			localPopupWindow.setBackgroundDrawable(background);
			localPopupWindow.showAtLocation(tv, 51, x, y);
		}
	});
	
	lv_app_manager.setOnScrollListener(new OnScrollListener() {
		
		@Override
		public void onScrollStateChanged(AbsListView view, int scrollState) {
			if(null != localPopupWindow){
				localPopupWindow.dismiss();
				localPopupWindow = null;
			}
		}
		
		@Override
		public void onScroll(AbsListView view, int firstVisibleItem,
				int visibleItemCount, int totalItemCount) {
			if(null != localPopupWindow){
				localPopupWindow.dismiss();
				localPopupWindow = null;
			}
		}
	});
	
}