Android ListView兩種長按彈出菜單方式

[java] view plain copy print ? /** * @author xianglong guo 2012-05-17 22:15 * 知識點1：ListView item:兩種長按彈出菜單方式 * 知識點2：ListView SimpleAdapter的使用 * 知識點 3：在java代碼中建立一個ListView */ ----------------------------------------------------- Activity ? 代碼片斷，雙擊複製 packageorg.gxl.com; publicclass ListOnLongClickActivity extendsActivity { privateLinearLayout myListViewlayout; privateListView mListView; SimpleAdapter adapter; publicint MID; // 建立一個List對象，用來存放列表項的每一行map信息 List<Map<String, Object>> list = newArrayList<Map<String, Object>>(); @Override publicvoid onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myListViewlayout = (LinearLayout) findViewById(R.id.myListViewlayout); mListView = newListView(this); // 建立佈局參數 LinearLayout.LayoutParams listviewParams = newLinearLayout.LayoutParams( LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT); // 當滑動列表上，默認顯示的黑色 mListView.setCacheColorHint(Color.WHITE); // 將列表添加到流式佈局myListViewlayout中 myListViewlayout.addView(mListView, listviewParams); FillListData(); // 列表現的單機事件 mListView.setOnItemClickListener(newOnItemClickListener() { @Override publicvoid onItemClick(AdapterView<?> arg0, View arg1, intposition, longid) { /* * 點擊列表項時觸發onItemClick方法，四個參數含義分別爲 * arg0：發生單擊事件的AdapterView * arg1：AdapterView中被點擊的View * position：當前點擊的行在adapter的下標 * id：當前點擊的行的id */ Toast.makeText(ListOnLongClickActivity.this, "您選擇的是" + list.get(position).get("name").toString(), Toast.LENGTH_SHORT).show(); } }); /** * Item 長按方式彈出菜單多選方式1 * Item 長按方式彈出菜單多選方式2 * ItemOnLongClick1()與ItemOnLongClick2()不共存，按實際須要選擇 */ // ItemOnLongClick1(); ItemOnLongClick2(); } // 填充ListView資源 privatevoid FillListData() { adapter = newSimpleAdapter(ListOnLongClickActivity.this, getListData(), R.layout.listviewrow, newString[] { "name", "price"}, newint[] { R.id.tv_name, R.id.tv_price }); mListView.setAdapter(adapter); } privateList<Map<String, Object>> getListData() { Map<String, Object> _map = newHashMap<String, Object>(); _map.put("name","MOTO ME865"); _map.put("price","2350元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","HTC G18"); _map.put("price","3340元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","MOTO XT928"); _map.put("price","5450元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","iPhone 4S"); _map.put("price","4650元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","MOTO ME525"); _map.put("price","1345元"); list.add(_map); returnlist; } privatevoid ItemOnLongClick1() { //注：setOnCreateContextMenuListener是與下面onContextItemSelected配套使用的 mListView .setOnCreateContextMenuListener(newOnCreateContextMenuListener() { publicvoid onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.add(0,0,0,"添加"); menu.add(0,1,0,"刪除"); menu.add(0,2,0,"刪除ALL"); } }); } // 長按菜單響應函數 publicboolean onContextItemSelected(MenuItem item) { AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item .getMenuInfo(); MID = (int) info.id;// 這裏的info.id對應的就是數據庫中_id的值 switch(item.getItemId()) { case0: // 添加操做 Toast.makeText(ListOnLongClickActivity.this, "添加", Toast.LENGTH_SHORT).show(); break; case1: // 刪除操做 break; case2: // 刪除ALL操做 break; default: break; } returnsuper.onContextItemSelected(item); } privatevoid ItemOnLongClick2() { mListView.setOnItemLongClickListener(newOnItemLongClickListener() { @Override publicboolean onItemLongClick(AdapterView<?> arg0, View arg1, finalint arg2, longarg3) { list.remove(arg2); newAlertDialog.Builder(ListOnLongClickActivity.this) .setTitle("對Item進行操做") .setItems(R.array.arrcontent, newDialogInterface.OnClickListener() { publicvoid onClick(DialogInterface dialog, intwhich) { String[] PK = getResources() .getStringArray( R.array.arrcontent); Toast.makeText( ListOnLongClickActivity.this, PK[which], Toast.LENGTH_LONG) .show(); if(PK[which].equals("刪除")) { // 按照這種方式作刪除操做，這個if內的代碼有bug，實際代碼中按需操做 list.remove(arg2); adapter = (SimpleAdapter) mListView .getAdapter(); if(!adapter.isEmpty()) { adapter.notifyDataSetChanged();// 實現數據的實時刷新 } } } }) .setNegativeButton("取消", newDialogInterface.OnClickListener() { publicvoid onClick(DialogInterface dialog, intwhich) { // TODO Auto-generated method stub } }).show(); returntrue; } }); } } /** * @author xianglong guo 2012-05-17 22:15 * 知識點1：ListView item:兩種長按彈出菜單方式 * 知識點2：ListView SimpleAdapter的使用 * 知識點 3：在java代碼中建立一個ListView */ ----------------------------------------------------- Activity ? 代碼片斷，雙擊複製 packageorg.gxl.com; publicclass ListOnLongClickActivity extendsActivity { privateLinearLayout myListViewlayout; privateListView mListView; SimpleAdapter adapter; publicint MID; // 建立一個List對象，用來存放列表項的每一行map信息 List<Map<String, Object>> list = newArrayList<Map<String, Object>>(); @Override publicvoid onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myListViewlayout = (LinearLayout) findViewById(R.id.myListViewlayout); mListView = newListView(this); // 建立佈局參數 LinearLayout.LayoutParams listviewParams = newLinearLayout.LayoutParams( LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT); // 當滑動列表上，默認顯示的黑色 mListView.setCacheColorHint(Color.WHITE); // 將列表添加到流式佈局myListViewlayout中 myListViewlayout.addView(mListView, listviewParams); FillListData(); // 列表現的單機事件 mListView.setOnItemClickListener(newOnItemClickListener() { @Override publicvoid onItemClick(AdapterView<?> arg0, View arg1, intposition, longid) { /* * 點擊列表項時觸發onItemClick方法，四個參數含義分別爲 * arg0：發生單擊事件的AdapterView * arg1：AdapterView中被點擊的View * position：當前點擊的行在adapter的下標 * id：當前點擊的行的id */ Toast.makeText(ListOnLongClickActivity.this, "您選擇的是" + list.get(position).get("name").toString(), Toast.LENGTH_SHORT).show(); } }); /** * Item 長按方式彈出菜單多選方式1 * Item 長按方式彈出菜單多選方式2 * ItemOnLongClick1()與ItemOnLongClick2()不共存，按實際須要選擇 */ // ItemOnLongClick1(); ItemOnLongClick2(); } // 填充ListView資源 privatevoid FillListData() { adapter = newSimpleAdapter(ListOnLongClickActivity.this, getListData(), R.layout.listviewrow, newString[] { "name", "price"}, newint[] { R.id.tv_name, R.id.tv_price }); mListView.setAdapter(adapter); } privateList<Map<String, Object>> getListData() { Map<String, Object> _map = newHashMap<String, Object>(); _map.put("name","MOTO ME865"); _map.put("price","2350元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","HTC G18"); _map.put("price","3340元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","MOTO XT928"); _map.put("price","5450元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","iPhone 4S"); _map.put("price","4650元"); list.add(_map); _map = newHashMap<String, Object>(); _map.put("name","MOTO ME525"); _map.put("price","1345元"); list.add(_map); returnlist; } privatevoid ItemOnLongClick1() { //注：setOnCreateContextMenuListener是與下面onContextItemSelected配套使用的 mListView .setOnCreateContextMenuListener(newOnCreateContextMenuListener() { publicvoid onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.add(0,0,0,"添加"); menu.add(0,1,0,"刪除"); menu.add(0,2,0,"刪除ALL"); } }); } // 長按菜單響應函數 publicboolean onContextItemSelected(MenuItem item) { AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item .getMenuInfo(); MID = (int) info.id;// 這裏的info.id對應的就是數據庫中_id的值 switch(item.getItemId()) { case0: // 添加操做 Toast.makeText(ListOnLongClickActivity.this, "添加", Toast.LENGTH_SHORT).show(); break; case1: // 刪除操做 break; case2: // 刪除ALL操做 break; default: break; } returnsuper.onContextItemSelected(item); } privatevoid ItemOnLongClick2() { mListView.setOnItemLongClickListener(newOnItemLongClickListener() { @Override publicboolean onItemLongClick(AdapterView<?> arg0, View arg1, finalint arg2, longarg3) { list.remove(arg2); newAlertDialog.Builder(ListOnLongClickActivity.this) .setTitle("對Item進行操做") .setItems(R.array.arrcontent, newDialogInterface.OnClickListener() { publicvoid onClick(DialogInterface dialog, intwhich) { String[] PK = getResources() .getStringArray( R.array.arrcontent); Toast.makeText( ListOnLongClickActivity.this, PK[which], Toast.LENGTH_LONG) .show(); if(PK[which].equals("刪除")) { // 按照這種方式作刪除操做，這個if內的代碼有bug，實際代碼中按需操做 list.remove(arg2); adapter = (SimpleAdapter) mListView .getAdapter(); if(!adapter.isEmpty()) { adapter.notifyDataSetChanged();// 實現數據的實時刷新 } } } }) .setNegativeButton("取消", newDialogInterface.OnClickListener() { publicvoid onClick(DialogInterface dialog, intwhich) { // TODO Auto-generated method stub } }).show(); returntrue; } }); } } ----------- listviewrow.xml ? 代碼片斷，雙擊複製 [java] view plain copy print ? <?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="match_parent" android:background="@drawable/listviewbg" android:orientation="vertical"> <TextView android:id="@+id/tv_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@android :color/black"/> <TextView android:id="@+id/tv_price" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@android :color/black"/> </LinearLayout> <?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="match_parent" android:background="@drawable/listviewbg" android:orientation="vertical"> <TextView android:id="@+id/tv_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@android:color/black"/> <TextView android:id="@+id/tv_price" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@android:color/black"/> </LinearLayout> ----------------- 有圖有真相： 工程代碼： 該貼已經同步到 qiannuo0317的微博

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