上次写到了开源项目MultiChoiceAdapter详解（四）——MultiChoiceBaseAdapter的使用，其实我们仍旧可以不使用ActionMode的，所以这里就写一个自己扩展的方法。
一、布局文件
listview_normal_layout.xml
<?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:orientation="vertical" > <ListView
android:id="@+id/normal_listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
</ListView> <LinearLayout
android:id="@+id/setting_linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"> <Button
android:id="@+id/selectAll_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="全选"
android:layout_weight="1"
android:onClick="buttonListener"/> <Button
android:id="@+id/cancle_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="取消"
android:layout_weight="1"
android:onClick="buttonListener"/> <Button
android:id="@+id/delete_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="删除"
android:onClick="buttonListener"/> <Button
android:id="@+id/share_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="分享"
android:layout_weight="1"
android:onClick="buttonListener"/> </LinearLayout> </LinearLayout>
item.xml
<?xml version="1.0" encoding="utf-8"?>
<com.manuelpeinado.multichoiceadapter.view.CheckableLinearLayout
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" android:background="@drawable/custom_list_item_background" android:orientation="horizontal">
<!-- 上面必须要用自定义的layout，否则不会有选中的效果！！！ --> <LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:orientation="horizontal" > <TextView
android:id="@+id/item_textView"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_gravity="center_vertical"
android:textColor="#000000"
android:layout_weight="1"
android:textAppearance="?android:attr/textAppearanceLarge" /> <!--
CheckBox中一定要写上focusable="false"否则无法相应点击事件
@android:id/checkbox这个也一定要写，如果不写的话点击checkbox就不会触发多选状态
如果你不想要选中checkbox就触发多选状态的话，这里可以用自己定义的id就行
-->
<CheckBox
android:id="@android:id/checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|right"
android:layout_weight="1"
android:layout_marginLeft="40dp"
android:textColor="#000000"
android:focusable="false"
android:visibility="gone"
android:text="" /> </LinearLayout>
</com.manuelpeinado.multichoiceadapter.view.CheckableLinearLayout>
view_header.xml
这个是用于给listview添加一个头部视图的，顺带学习下listview添加顶部视图的方法呗~
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="16dp"
android:paddingTop="16dp"
android:text="这是给listview添加的顶部视图"
android:gravity="center_horizontal"
android:textStyle="bold" />
二、继承类然后实现
可以看见这里关于ActionMode有关的回调方法我都是空实现
private class MultiBaseAdapter extends MultiChoiceBaseAdapter{
private String[] mData;
/**
* 构造函数
* @param savedInstanceState
*/
public MultiBaseAdapter(Bundle savedInstanceState,String[] data) {
super(savedInstanceState);
// TODO 自动生成的构造函数存根
mData = data;
}
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
return true;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
@Override
public boolean onPrepareActionMode(ActionMode arg0, Menu arg1) {
// TODO 自动生成的方法存根
return false;
}
/**
* 看适配器中有多少元素需要加载
*/
@Override
public int getCount() {
// TODO 自动生成的方法存根
return mData.length;
}
/**
* 通过position来得到相应的item，这里返回object对象
*/
@Override
public Object getItem(int position) {
// TODO 自动生成的方法存根
return mData[position];
}
/**
* 通过position得到id
*/
@Override
public long getItemId(int position) {
// TODO 自动生成的方法存根
return position;
}
/**
* 返回item的view对象
*/
@Override
protected View getViewImpl(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
int layout = R.layout.item;
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(layout, parent, false);
}
ViewGroup group = (ViewGroup)convertView;
((TextView)group.findViewById(R.id.item_textView)).setText(mData[position]);
((CheckBox)group.findViewById(android.R.id.checkbox)).setVisibility(View.VISIBLE);
return group;
}
}
三、配置适配器和相应的监听器
listView.addHeaderView(createHeaderView(), null, false);是给listview添加头视图的方法，传入false表示头图不能点击
private MultiBaseAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO 自动生成的方法存根
super.onCreate(savedInstanceState);
setContentView(R.layout.listview_normal_layout);
String[] data = {"android","ios","wp","c++",
"java","c#","javascript","vb",
"delphi","PB","ASP","SQL"};
final LinearLayout settingLL = (LinearLayout)findViewById(R.id.setting_linearLayout);
settingLL.setVisibility(View.GONE);
ListView listView = (ListView)findViewById(R.id.normal_listView);
/**
* 给listview顶部添加2个额外视图，设置顶部视图不可点击
*/
listView.addHeaderView(createHeaderView(), null, false);
listView.addHeaderView(createHeaderView(), null, false);
//实例化适配器
adapter = new MultiBaseAdapter(savedInstanceState, data);
//添加视图
adapter.setAdapterView(listView);
//设置不显示actionMode
adapter.showActionMode(false);
//点击事件
adapter.setOnItemClickListener(new MyItemClick(adapter));
//监听选中的状态
adapter.setOnSelectedStateChangeListener(new OnSelectedStateChangeListener() {
/**
* checkedItemCount = 已经选中的item数目
*/
@Override
public void onSelectedStateChanged(int checkedItemCount) {
if (checkedItemCount != 0) {
settingLL.setVisibility(View.VISIBLE);
}
else {
settingLL.setVisibility(View.GONE);
}
}
});
}
private View createHeaderView() {
return LayoutInflater.from(this).inflate(R.layout.view_header, null);
}
点击事件的监听器：
/**
* @author:Jack Tony
* @tips :点击事件的监听器
* @date :2014-10-20
*/
private class MyItemClick implements OnItemClickListener{ private MultiChoiceBaseAdapter mAdapter; public MyItemClick(MultiChoiceBaseAdapter adapter) {
mAdapter = adapter;
} @Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
//因为在顶部添加了2个视图，所以这里的位置要下移两位 Toast.makeText(getApplicationContext(), "点击了: " + mAdapter.getItem(position - 2), Toast.LENGTH_SHORT).show();
} }
四、用回调方法来优化
@Override
protected void onSaveInstanceState(Bundle outState) {
adapter.save(outState);
} @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
if (adapter.getCheckedItemCount() > 0) {
cancleAll(adapter);
return true;
}
}
return super.onKeyDown(keyCode, event);
}
public void buttonListener(View v) {
switch (v.getId()) {
case R.id.selectAll_button:
selectAll(adapter);
break;
case R.id.cancle_button:
cancleAll(adapter);
break;
case R.id.delete_button:
delectItems(adapter);
break;
case R.id.share_button:
Toast.makeText(getApplicationContext(), "分享"+Arrays.toString(getSelectedItems(adapter)), 1).show();
cancleAll(adapter);
break;
default:
break;
}
}
/**
* 全选
* @param adapter
*/
private void selectAll(MultiChoiceBaseAdapter adapter) {
for (int i = 0; i < adapter.getCount(); ++i) {
adapter.setItemChecked(i, true);
}
}
/**
* 取消所有选择效果
* @param adapter
*/
private void cancleAll(MultiChoiceBaseAdapter adapter) {
for (int i = 0; i < adapter.getCount(); ++i) {
adapter.setItemChecked(i, false);
}
}
/**
* 得到已经选中的items
* @param adapter
* @return
*/
private String[] getSelectedItems(MultiChoiceBaseAdapter adapter) {
//得到选中的items
Set<Long> selection = adapter.getCheckedItems();
String[] items = new String[selection.size()];
int i = 0;
for (long position : selection) {
items[i++] = (String)adapter.getItem((int)position);
}
return items;
}
/**
* 删除已经选中的items
* @param adapter
*/
private void delectItems(MultiChoiceBaseAdapter adapter) {
//通过判断名字来remove掉这些items
// TODO:删除某些元素，因为这里的数据源是String[]所以没有链表那样好删除，就没去实现。
//实际中：推荐用链表来动态删除元素，在删除时需要注意的是最好以唯一的id，如position来进行删除
cancleAll(adapter);
}
搞定了！！！
全部代码：
package com.kale.multichoiceadaptertest; import java.util.Arrays;
import java.util.Set; import android.app.Activity;
import android.os.Bundle;
import android.support.v7.view.ActionMode;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast; import com.manuelpeinado.multichoiceadapter.base.OnSelectedStateChangeListener;
import com.manuelpeinado.multichoiceadapter.compat.MultiChoiceBaseAdapter; public class BaseAdapterNormalTestActivity extends Activity{ private MultiBaseAdapter adapter; @Override
protected void onCreate(Bundle savedInstanceState) {
// TODO 自动生成的方法存根
super.onCreate(savedInstanceState);
setContentView(R.layout.listview_normal_layout); String[] data = {"android","ios","wp","c++",
"java","c#","javascript","vb",
"delphi","PB","ASP","SQL"}; final LinearLayout settingLL = (LinearLayout)findViewById(R.id.setting_linearLayout);
settingLL.setVisibility(View.GONE); ListView listView = (ListView)findViewById(R.id.normal_listView); /**
* 给listview顶部添加2个额外视图，设置顶部视图不可点击
*/
listView.addHeaderView(createHeaderView(), null, false);
listView.addHeaderView(createHeaderView(), null, false);
//实例化适配器
adapter = new MultiBaseAdapter(savedInstanceState, data);
//添加视图
adapter.setAdapterView(listView);
//设置不显示actionMode
adapter.showActionMode(false);
//点击事件
adapter.setOnItemClickListener(new MyItemClick(adapter));
//监听选中的状态
adapter.setOnSelectedStateChangeListener(new OnSelectedStateChangeListener() {
/**
* checkedItemCount = 已经选中的item数目
*/
@Override
public void onSelectedStateChanged(int checkedItemCount) {
if (checkedItemCount != 0) {
settingLL.setVisibility(View.VISIBLE);
}
else {
settingLL.setVisibility(View.GONE);
}
}
});
} @Override
protected void onSaveInstanceState(Bundle outState) {
adapter.save(outState);
} @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
if (adapter.getCheckedItemCount() > 0) {
cancleAll(adapter);
return true;
}
}
return super.onKeyDown(keyCode, event);
} private View createHeaderView() {
return LayoutInflater.from(this).inflate(R.layout.view_header, null);
} private class MultiBaseAdapter extends MultiChoiceBaseAdapter{ private String[] mData; /**
* 构造函数
* @param savedInstanceState
*/
public MultiBaseAdapter(Bundle savedInstanceState,String[] data) {
super(savedInstanceState);
// TODO 自动生成的构造函数存根
mData = data;
} @Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
return true;
} @Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
} @Override
public boolean onPrepareActionMode(ActionMode arg0, Menu arg1) {
// TODO 自动生成的方法存根
return false;
} /**
* 看适配器中有多少元素需要加载
*/
@Override
public int getCount() {
// TODO 自动生成的方法存根
return mData.length;
} /**
* 通过position来得到相应的item，这里返回object对象
*/
@Override
public Object getItem(int position) {
// TODO 自动生成的方法存根
return mData[position];
} /**
* 通过position得到id
*/
@Override
public long getItemId(int position) {
// TODO 自动生成的方法存根
return position;
} /**
* 返回item的view对象
*/
@Override
protected View getViewImpl(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
int layout = R.layout.item;
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(layout, parent, false);
}
ViewGroup group = (ViewGroup)convertView;
((TextView)group.findViewById(R.id.item_textView)).setText(mData[position]);
((CheckBox)group.findViewById(android.R.id.checkbox)).setVisibility(View.VISIBLE);
return group;
} } public void buttonListener(View v) {
switch (v.getId()) {
case R.id.selectAll_button:
selectAll(adapter);
break;
case R.id.cancle_button:
cancleAll(adapter);
break;
case R.id.delete_button:
delectItems(adapter);
break;
case R.id.share_button:
Toast.makeText(getApplicationContext(), "分享"+Arrays.toString(getSelectedItems(adapter)), 1).show();
cancleAll(adapter);
break;
default:
break;
}
} /**
* 全选
* @param adapter
*/
private void selectAll(MultiChoiceBaseAdapter adapter) {
for (int i = 0; i < adapter.getCount(); ++i) {
adapter.setItemChecked(i, true);
}
} /**
* 取消所有选择效果
* @param adapter
*/
private void cancleAll(MultiChoiceBaseAdapter adapter) {
for (int i = 0; i < adapter.getCount(); ++i) {
adapter.setItemChecked(i, false);
}
} /**
* 得到已经选中的items
* @param adapter
* @return
*/
private String[] getSelectedItems(MultiChoiceBaseAdapter adapter) {
//得到选中的items
Set<Long> selection = adapter.getCheckedItems();
String[] items = new String[selection.size()];
int i = 0;
for (long position : selection) {
items[i++] = (String)adapter.getItem((int)position);
}
return items;
} /**
* 删除已经选中的items
* @param adapter
*/
private void delectItems(MultiChoiceBaseAdapter adapter) {
//通过判断名字来remove掉这些items
// TODO:删除某些元素，因为这里的数据源是String[]所以没有链表那样好删除，就没去实现。
//实际中：推荐用链表来动态删除元素，在删除时需要注意的是最好以唯一的id，如position来进行删除
cancleAll(adapter);
} /**
* @author:Jack Tony
* @tips :点击事件的监听器
* @date :2014-10-20
*/
private class MyItemClick implements OnItemClickListener{ private MultiChoiceBaseAdapter mAdapter; public MyItemClick(MultiChoiceBaseAdapter adapter) {
mAdapter = adapter;
} @Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
//因为在顶部添加了2个视图，所以这里的位置要下移两位 Toast.makeText(getApplicationContext(), "点击了: " + mAdapter.getItem(position - 2), Toast.LENGTH_SHORT).show();
} }
}
开源项目MultiChoiceAdapter详解（一）——概要介绍
开源项目MultiChoiceAdapter详解（二）——MultiChoiceArrayAdapter的使用
开源项目MultiChoiceAdapter详解（三）——MulitChoiceNormalArrayAdapter的使用
开源项目MultiChoiceAdapter详解（四）——MultiChoiceBaseAdapter的使用
开源项目MultiChoiceAdapter详解（五）——可扩展的MultiChoiceBaseAdapter
开源项目MultiChoiceAdapter详解（六）——GridView和MultiChoiceBaseAdapter配合使用