如何在简单适配器中添加复选框

Question

这是我的代码，下面在网格视图中使用了简单的适配器。每件事情都很好，但我想在代码中添加复选框，那么我该怎么做？我如何在我的简单适配器中添加复选框？我的代码检查如果文件是目录显示图标其他明智的显示图像。我只想补充复选框，以便用户选择复选框并删除复选框选择了多个图像

SimpleAdapter simpleAdapter; 
GridView gridView; 

public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 

File photos = new File(getFilesDir(),"photos"); 
photos.mkdirs(); 

File root1 = new File("/data/data/com.myexample.folder/files/"); 

currentParent = root1; 
currentFiles = root1.listFiles(); 

    currentFilePath = new String[currentFiles.length]; 
    int count = 0; 

for(File f:currentFiles) 
{ 
currentFilePath[count] = f.getAbsolutePath(); 
count++; 
} 


gridView =(GridView)findViewById(R.id.grid); 
gridView.setOnItemClickListener(new OnItemClickListener(){ 
public void onItemClick(AdapterView<?> parent, View view, int 
position,long id) { 


if(currentFiles[position].isDirectory()) 
{ 
    root = new File("/data/data/com.myexample.folder 
    /files/"+FileName(currentFilePath[position])+"/"); 

    Log.e("Root first",root+ " "); 

    currentFiles = root.listFiles(); 

    inflateListView(currentFiles); 
} 
else if(currentFiles[position].isFile()) 
{ 
     inflateListView(currentFiles);  
      } 

private void inflateListView(File[] files){ 

List<Map<String,Object>> listItems = new ArrayList<Map<String,Object>>(); 

for(int i=0;i<files.length;i++) 
{  
Map<String, Object> listItem = new HashMap<String, Object>(); 

if(files[i].isDirectory()) 
{ 
    listItem.put("icon", R.drawable.folder); 
} 
else 
{ 
    listItem.put("icon", R.drawable.file); 
} 

listItem.put("fileName", files[i].getName()); 
listItems.add(listItem); 
} 

simpleAdapter=new SimpleAdapter(this,listItems,R.layout.line,new String[] 
{"icon","fileName"},new int[]{R.id.icon,R.id.file_name}); 
gridView.setAdapter(simpleAdapter); 

Answer 1

您需要使用自定义适配器使用SimpleAdapter不会做same.Filling gridview的。

Answer 2

在您的R.layout.line.xml中包含复选框视图。然后，你必须扩展（不使用SimpleAdapter）来覆盖getView()方法，像这样一个ArrayAdapter类：

@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 
    CheckBox cb = (CheckBox) convertView.findViewById(R.id.your_checkbox); 
    cb.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      ... 
     } 
    }); 

    return convertView; 
}