public class MainActivity extends Activity implements OnItemLongClickListener, OnClickListener { private ListView lv_main; private List<AppInfo> data; private AppAdapter adapter; private PopupWindow pw; private View pwView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //初始化成员变量 lv_main = (ListView) findViewById(R.id.lv_main); data = getAllAppInfos(); adapter = new AppAdapter(); //显示列表 lv_main.setAdapter(adapter); //给ListView设置item的点击监听 lv_main.setOnItemClickListener(new OnItemClickListener() { /** * parent : ListView * view : 当前行的item视图对象 * position : 当前行的下标 */ @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { //提示当前行的应用名称 String appName = data.get(position).getAppName(); //提示 //Toast.makeText(MainActivity.this, appName, 0).show(); if(pw==null) { pwView = View.inflate(MainActivity.this, R.layout.pw_layout, null); //得到子view设置点击监听 pwView.findViewById(R.id.ll_pw_uninstall).setOnClickListener(MainActivity.this); pwView.findViewById(R.id.ll_pw_run).setOnClickListener(MainActivity.this); pwView.findViewById(R.id.ll_pw_share).setOnClickListener(MainActivity.this); pw = new PopupWindow(pwView, view.getWidth()-80, view.getHeight()); pw.setBackgroundDrawable(new BitmapDrawable());//必须指定一个背景图片，随便一个即可，不然以下设置的动画不显示 } //如果正在显示, 移除 if(pw.isShowing()) { pw.dismiss();//只是不显示了, 但对象仍然在内存中 } //(再)显示 pw.showAsDropDown(view, 40, -view.getHeight()); //缩放动画 ScaleAnimation animation = new ScaleAnimation(0, 1, 0, 1); animation.setDuration(1000); //启动动画 pwView.startAnimation(animation); } }); //给LitView设置Item的长按监听 lv_main.setOnItemLongClickListener(this); //设置listView的滚动监听 lv_main.setOnScrollListener(new OnScrollListener() { /* * SCROLL_STATE_IDLE : 空闲(不动) * SCROLL_STATE_TOUCH_SCROLL : 跟着手指滚动 * SCROLL_STATE_FLING : 快速滚动 */ //当listView的滚动状态发生改变时调用 @Override public void onScrollStateChanged(AbsListView view, int scrollState) { Log.e("TAG", "onScrollStateChanged()..."+scrollState); if(scrollState==OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) { //移除正在显示的pw if(pw!=null && pw.isShowing()) { pw.dismiss(); } } } //当listView正在滚动时调用(产生move时不断调用) @Override public void onScroll(AbsListView view, int firstVisibleItemPosition, int visibleItemCount, int totalItemCount) { Log.e("TAG", "onScroll()..."); } }); } class AppAdapter extends BaseAdapter { @Override public int getCount() { return data.size(); } @Override public Object getItem(int position) { return data.get(position); } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } //返回带数据当前行的Item视图对象 @Override public View getView(int position, View convertView, ViewGroup parent) { //1. 如果convertView是null, 加载item的布局文件 if(convertView==null) { Log.e("TAG", "getView() load layout"); convertView = View.inflate(MainActivity.this, R.layout.item_main, null); } //2. 得到当前行数据对象 AppInfo appInfo = data.get(position); //3. 得到当前行需要更新的子View对象 ImageView imageView = (ImageView) convertView.findViewById(R.id.iv_item_icon); TextView textView = (TextView) convertView.findViewById(R.id.tv_item_name); //4. 给视图设置数据 imageView.setImageDrawable(appInfo.getIcon()); textView.setText(appInfo.getAppName()); //返回convertView return convertView; } } /* * 得到手机中所有应用信息的列表 * AppInfo * Drawable icon 图片对象 * String appName * String packageName */ protected List<AppInfo> getAllAppInfos() { List<AppInfo> list = new ArrayList<AppInfo>(); // 得到应用的packgeManager PackageManager packageManager = getPackageManager(); // 创建一个主界面的intent Intent intent = new Intent(); intent.setAction(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_LAUNCHER); // 得到包含应用信息的列表 List<ResolveInfo> ResolveInfos = packageManager.queryIntentActivities( intent, 0); // 遍历 for (ResolveInfo ri : ResolveInfos) { // 得到包名 String packageName = ri.activityInfo.packageName; // 得到图标 Drawable icon = ri.loadIcon(packageManager); // 得到应用名称 String appName = ri.loadLabel(packageManager).toString(); // 封装应用信息对象 AppInfo appInfo = new AppInfo(icon, appName, packageName); // 添加到list list.add(appInfo); } return list; } @Override public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { //删除当前行 //删除当前行的数据 data.remove(position); //更新列表 //lv_main.setAdapter(adapter);//显示列表, 不会使用缓存的item的视图对象 adapter.notifyDataSetChanged();//通知更新列表, 使用所有缓存的item的视图对象 return true; } @Override public void onClick(View v) { switch (v.getId()) { case R.id.ll_pw_uninstall: pw.dismiss(); Toast.makeText(this, "卸载", 0).show(); break; case R.id.ll_pw_run: pw.dismiss(); Toast.makeText(this, "运行", 0).show(); break; case R.id.ll_pw_share: pw.dismiss(); Toast.makeText(this, "分享", 0).show(); break; default: break; } } }
item_bg_selector <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android" > <item android:state_pressed="true"> <shape> <solid android:color="#00ffff"></solid> </shape> </item> </selector> pw_layout <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="80dp" android:background="@drawable/local_popup_bg" android:orientation="horizontal" android:paddingLeft="20dp" > <LinearLayout android:id="@+id/ll_pw_uninstall" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center" android:orientation="vertical" android:background="@drawable/item_bg_selector" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/img1" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="卸载" android:textSize="16sp" /> </LinearLayout> <View android:layout_width="1dp" android:layout_height="fill_parent" android:background="#00ff00" /> <LinearLayout android:id="@+id/ll_pw_run" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center" android:orientation="vertical" android:background="@drawable/item_bg_selector" > <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/img2" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="运行" android:textSize="16sp" /> </LinearLayout> <View android:layout_width="1dp" android:layout_height="fill_parent" android:background="#00ff00" /> <LinearLayout android:id="@+id/ll_pw_share" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center" android:orientation="vertical" android:background="@drawable/item_bg_selector"> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/img3" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="分享" android:textSize="16sp" /> </LinearLayout> </LinearLayout>