本文实例分析了Android开发中PopupWindow用法。分享给大家供大家参考，具体如下：
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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; } };};@Overrideprotected 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; } } });} |
希望本文所述对大家Android程序设计有所帮助。
