MulitChoiceNormalArrayAdapter是我自己定义的一个类，其实就是实现了MulitChoiceArrayAdapter，为什么做这个简单的实现类呢，因为这样我们在不用ActionMode的时候就不用每次要写一个类来继承MulitChoiceArrayAdapter了，直接实例化MulitChoiceNormalArrayAdapter即可。下面贴一个compat包下的MulitChoiceNormalArrayAdapter的源码。
MulitChoiceNormalArrayAdapter.java
package com.manuelpeinado.multichoiceadapter.compat; import java.util.ArrayList;
import java.util.Arrays;
import java.util.List; import android.content.Context;
import android.os.Bundle;
import android.support.v7.view.ActionMode;
import android.view.Menu;
import android.view.MenuItem; public class MulitChoiceNormalArrayAdapter<T> extends MultiChoiceArrayAdapter<T> { public MulitChoiceNormalArrayAdapter(Bundle savedInstanceState,
Context context, int resource, int textViewResourceId) {
super(savedInstanceState, context, resource, textViewResourceId);
// TODO 自动生成的构造函数存根
} public MulitChoiceNormalArrayAdapter(Bundle savedInstanceState,
Context context, int resource, int textViewResourceId,
List<T> objects) {
super(savedInstanceState, context, resource, textViewResourceId, objects);
// TODO 自动生成的构造函数存根
} public MulitChoiceNormalArrayAdapter(Bundle savedInstanceState,
Context context, int resource, int textViewResourceId, T[] objects) {
this(savedInstanceState,context,resource,textViewResourceId,new ArrayList<T>(Arrays.asList(objects)));
// TODO 自动生成的构造函数存根
} @Override
public boolean onActionItemClicked(ActionMode arg0, MenuItem arg1) {
// TODO 自动生成的方法存根
return false;
} @Override
public boolean onCreateActionMode(ActionMode arg0, Menu arg1) {
// TODO 自动生成的方法存根
return false;
} @Override
public boolean onPrepareActionMode(ActionMode arg0, Menu arg1) {
// TODO 自动生成的方法存根
return false;
} }
好了，知道了这个后我们来看怎么简单的来使用这个适配器进行多选。
1.写布局文件
2.实例化MultiChoiceAdapter
3.设置showActionMode(false)来表示不使用ActionMode
4.setAdapterView();来设置要用适配器的view对象
5.设置下监听器来进行各种扩展的操作
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" /> </LinearLayout>
</com.manuelpeinado.multichoiceadapter.view.CheckableLinearLayout>
二、实现适配器和绑定适配器
final LinearLayout settingLL = (LinearLayout)findViewById(R.id.setting_linearLayout);
settingLL.setVisibility(View.GONE); ListView normalListView = (ListView)findViewById(R.id.normal_listView); String[] data = {"android","ios","wp","c++",
"java","c#","javascript","vb",
"delphi","PB","ASP","SQL"}; //ArrayList<String> items = new ArrayList<>(Arrays.asList(data)); normalAdapter = new MulitChoiceNormalArrayAdapter<String>(savedInstanceState,
getApplicationContext(), R.layout.item, R.id.item_textView, data); normalAdapter.showActionMode(false);//设置为显示actionmode的普通模式
normalAdapter.setAdapterView(normalListView);
normalAdapter.setOnItemClickListener(new MyItemClick(normalAdapter));
三、写一些回调方法来优化，比如选中时点击返回后取消选中
@Override
protected void onSaveInstanceState(Bundle outState) {
normalAdapter.save(outState);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
if (normalAdapter.getCheckedItemCount() > 0) {
cancleAll(normalAdapter);
return true;
}
}
return super.onKeyDown(keyCode, event);
}
四、绑定监听器
setOnItemClickListener是在item被点击时触发的
setOnSelectedStateChangeListener是item被选中或者取消选中时触发的
normalAdapter.setOnItemClickListener(new MyItemClick(normalAdapter));
normalAdapter.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);
}
}
}); /**
* @author:Jack Tony
* @tips :点击事件的监听器
* @date :2014-10-20
*/
private class MyItemClick implements OnItemClickListener{ private MultiChoiceArrayAdapter<String> mAdapter; public MyItemClick(MultiChoiceArrayAdapter<String> adapter) {
mAdapter = adapter;
} @Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
Toast.makeText(getApplicationContext(), "点击了: " + mAdapter.getItem(position), Toast.LENGTH_SHORT).show();
} }
五、通过按钮进行操作（这是扩展性的重要体现）
public void buttonListener(View v) {
switch (v.getId()) {
case R.id.selectAll_button:
selectAll(normalAdapter);
break;
case R.id.cancle_button:
cancleAll(normalAdapter);
break;
case R.id.delete_button:
delectItems(normalAdapter);
break;
case R.id.share_button:
Toast.makeText(getApplicationContext(), "分享"+Arrays.toString(getSelectedItems(normalAdapter)), 1).show();
cancleAll(normalAdapter);
break;
default:
break;
}
}
/**
* 全选
* @param adapter
*/
private void selectAll(MultiChoiceArrayAdapter<String> 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(MultiChoiceArrayAdapter<String> 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(MultiChoiceArrayAdapter<String> 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++] = adapter.getItem((int)position);
}
return items;
}
/**
* 删除已经选中的items
* @param adapter
*/
private void delectItems(MultiChoiceArrayAdapter<String> adapter) {
//通过判断名字来remove掉这些items
for (String item : getSelectedItems(adapter)) {
/**
* 这里用remove时要注意传入适配器的不能是String[] items对象。否则会报错
* 这里我已经在构造函数中进行了处理，传入String数组也不会出错了~
*/
adapter.remove(item);
}
cancleAll(adapter);
}
全部搞定了！！！
下面是全部代码：
package com.kale.multichoiceadaptertest; import java.util.Arrays;
import java.util.Set; import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.Toast; import com.manuelpeinado.multichoiceadapter.base.OnSelectedStateChangeListener;
import com.manuelpeinado.multichoiceadapter.compat.MulitChoiceNormalArrayAdapter;
import com.manuelpeinado.multichoiceadapter.compat.MultiChoiceArrayAdapter; /**
* 如果不用到ActionMode对象的话可以放心大胆的继承activity，也不用导入ActionMode了。
*
* 其实在不用ActionMode时导入
* import com.manuelpeinado.multichoiceadapter.normal.MulitChoiceNormalArrayAdapter;
* import com.manuelpeinado.multichoiceadapter.normal.MultiChoiceArrayAdapter;
* 或者是
* import com.manuelpeinado.multichoiceadapter.compat.MulitChoiceNormalArrayAdapter;
* import com.manuelpeinado.multichoiceadapter.compat.MultiChoiceArrayAdapter;
* 都一样的，只是为了以后的扩展，还是按需导入吧。
* 4.0以上的导入normal包下面的，兼容2.0的导入compat包下的
*/ public class ArrayAdapterNormalTestActivity extends Activity{ MulitChoiceNormalArrayAdapter<String> normalAdapter; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview_normal_layout); final LinearLayout settingLL = (LinearLayout)findViewById(R.id.setting_linearLayout);
settingLL.setVisibility(View.GONE); ListView normalListView = (ListView)findViewById(R.id.normal_listView); String[] data = {"android","ios","wp","c++",
"java","c#","javascript","vb",
"delphi","PB","ASP","SQL"}; //ArrayList<String> items = new ArrayList<>(Arrays.asList(data)); normalAdapter = new MulitChoiceNormalArrayAdapter<String>(savedInstanceState,
getApplicationContext(), R.layout.item, R.id.item_textView, data); normalAdapter.showActionMode(false);//设置为显示actionmode的普通模式
normalAdapter.setAdapterView(normalListView);
normalAdapter.setOnItemClickListener(new MyItemClick(normalAdapter));
normalAdapter.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) {
normalAdapter.save(outState);
} @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
if (normalAdapter.getCheckedItemCount() > 0) {
cancleAll(normalAdapter);
return true;
}
}
return super.onKeyDown(keyCode, event);
} public void buttonListener(View v) {
switch (v.getId()) {
case R.id.selectAll_button:
selectAll(normalAdapter);
break;
case R.id.cancle_button:
cancleAll(normalAdapter);
break;
case R.id.delete_button:
delectItems(normalAdapter);
break;
case R.id.share_button:
Toast.makeText(getApplicationContext(), "分享"+Arrays.toString(getSelectedItems(normalAdapter)), 1).show();
cancleAll(normalAdapter);
break;
default:
break;
}
} /**
* 全选
* @param adapter
*/
private void selectAll(MultiChoiceArrayAdapter<String> 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(MultiChoiceArrayAdapter<String> 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(MultiChoiceArrayAdapter<String> 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++] = adapter.getItem((int)position);
}
return items;
} /**
* 删除已经选中的items
* @param adapter
*/
private void delectItems(MultiChoiceArrayAdapter<String> adapter) {
//通过判断名字来remove掉这些items
for (String item : getSelectedItems(adapter)) {
/**
* 这里用remove时要注意传入适配器的不能是String[] items对象。否则会报错
* 这里我已经在构造函数中进行了处理，传入String数组也不会出错了~
*/
adapter.remove(item);
}
cancleAll(adapter);
} /**
* @author:Jack Tony
* @tips :点击事件的监听器
* @date :2014-10-20
*/
private class MyItemClick implements OnItemClickListener{ private MultiChoiceArrayAdapter<String> mAdapter; public MyItemClick(MultiChoiceArrayAdapter<String> adapter) {
mAdapter = adapter;
} @Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
Toast.makeText(getApplicationContext(), "点击了: " + mAdapter.getItem(position), 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