文件浏览+文件选择

FileBrowser.java

public class FileBrowser {

	private Context context;
	private List<String> items=null;
	private List<String> paths=null;
	private String rootPath="/";
	private TextView mPath;
	private View view;
	private ListView list;
	private FileAdapter m_FileAdapter;
	private String selectedFilePath = "";

	public String getSelectedFilePath() {
		return selectedFilePath;
	}

	public void setSelectedFilePath(String selectedFilePath) {
		this.selectedFilePath = selectedFilePath;
	}

	public View getFileListView(){
		return view;
	}


	public FileBrowser(Context context){
		this.context = context;
		LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);  
		view = inflater.inflate(R.layout.filelist, null);
		mPath = (TextView)view.findViewById(R.id.mPath);
		mPath.setTextColor(context.getResources().getColor(R.color.text_color));
		list = (ListView)view.findViewById(R.id.filelist);
		getFileDir(rootPath);
	}

	private void getFileDir(String filePath){

		mPath.setText(filePath);
		items=new ArrayList<String>();
		paths=new ArrayList<String>();
		File f=new File(filePath);  
		File[] files=f.listFiles();

		if(!filePath.equals(rootPath))
		{
			items.add("goroot");
			paths.add(rootPath);
			items.add("goparent");
			paths.add(f.getParent());
		}
		for(int i=0;i<files.length;i++)
		{
			File file=files[i];
			items.add(file.getName());
			paths.add(file.getPath());
		}

		m_FileAdapter = new FileAdapter(context,items,paths);
		list.setAdapter(m_FileAdapter);
		list.setOnItemClickListener(new OnItemClickListener(){

			@Override
			public void onItemClick(AdapterView<?> parent, View view,int position, long id) {

				File file=new File(paths.get(position));
				if(file.canRead()){
					if (file.isDirectory()){
						getFileDir(paths.get(position));
					}else{
						ViewHolder vHollder = (ViewHolder) view.getTag();
						for(ViewHolder v : m_FileAdapter.getVHs()){
							v.cBox.setChecked(false);
							v.cBox.setVisibility(View.GONE);
						}
						for(int i : m_FileAdapter.getIsSelected().keySet()){
							m_FileAdapter.getIsSelected().put(i, false);
						}
						for(int i : m_FileAdapter.getIsVisibility().keySet()){
							m_FileAdapter.getIsVisibility().put(i, View.GONE);
						}
						vHollder.cBox.setVisibility(View.VISIBLE);
						m_FileAdapter.getIsVisibility().put(position, View.VISIBLE);
						vHollder.cBox.setChecked(true);
						m_FileAdapter.getIsSelected().put(position, vHollder.cBox.isChecked());
						if(mPath.getText().toString().equals(rootPath)){
							setSelectedFilePath(mPath.getText().toString() + vHollder.text.getText().toString());
						}else{
							setSelectedFilePath(mPath.getText().toString() + File.separator + vHollder.text.getText().toString());
						}
						Toast.makeText(context, getSelectedFilePath(), Toast.LENGTH_SHORT).show();
					}
				}else{
					LinearLayout lay = new LinearLayout(context);
					lay.setOrientation(LinearLayout.HORIZONTAL);
					ImageView image = new ImageView(context);
					TextView text = new TextView(context);
					text.setTextColor(context.getResources().getColor(R.color.text_color));
					text.setTextSize(16);
					text.setText("很抱歉您的权限不足,无法读取文件内容!");
					Toast toast = Toast.makeText(context, text.getText().toString(), Toast.LENGTH_SHORT);
					image.setImageResource(android.R.drawable.ic_lock_idle_alarm);
					lay.addView(image);
					lay.addView(text);
					toast.setView(lay);
					toast.show();
				}
			}
		});
	}
}

 FileAdapter.java

public class FileAdapter extends BaseAdapter{

	private LayoutInflater mInflater;
	private Bitmap mIcon1;
	private Bitmap mIcon2;
	private Bitmap mIcon3;
	private Bitmap mIcon4;
	private List<String> items;
	private List<String> paths;
	private Map<Integer, Boolean> isSelected;
	private Map<Integer, Integer> isVisibility;
	public Map<Integer, Integer> getIsVisibility() {
		return isVisibility;
	}

	private List<ViewHolder> VHs = new ArrayList<ViewHolder>();
	private Context context;

	public Map<Integer, Boolean> getIsSelected() {
		return isSelected;
	}

	public void setIsSelected(Map<Integer, Boolean> isSelected) {
		this.isSelected = isSelected;
	}

	public FileAdapter(Context context,List<String> it,List<String> pa){
		
		this.context = context;
		mInflater = LayoutInflater.from(context);
		if( it != null && it.size() > 0){
			isSelected = new HashMap<Integer, Boolean>();
			isVisibility = new HashMap<Integer, Integer>();
			for (int i = 0; i < it.size(); i++) {    
				isSelected.put(i, false);
				isVisibility.put(i, View.GONE);
			}
		}
		items = it;
		paths = pa;
		mIcon1 = BitmapFactory.decodeResource(context.getResources(),
				R.drawable.backroot);
		mIcon2 = BitmapFactory.decodeResource(context.getResources(),
				R.drawable.backparent);
		mIcon3 = BitmapFactory.decodeResource(context.getResources(),
				R.drawable.folder);
		mIcon4 = BitmapFactory.decodeResource(context.getResources(),
				R.drawable.doc);
	}

	@Override
	public int getCount(){
		return items.size();
	}

	@Override
	public Object getItem(int position){
		return items.get(position);
	}

	@Override
	public long getItemId(int position){
		return position;
	}

	@Override
	public View getView(int position,View convertView,ViewGroup parent){
		ViewHolder holder;

		if(convertView == null){
			convertView = mInflater.inflate(R.layout.file_row, null);
			holder = new ViewHolder();
			VHs.add(holder);
			holder.text = (TextView) convertView.findViewById(R.id.filetext);
			holder.text.setTextColor(context.getResources().getColor(R.color.text_color));
			holder.icon = (ImageView) convertView.findViewById(R.id.fileicon);
			holder.cBox = (CheckBox) convertView.findViewById(R.id.file_check);
			convertView.setTag(holder);
		}else{
			holder = (ViewHolder) convertView.getTag();
		}
		File f=new File(paths.get(position).toString());
		if(items.get(position).toString().equals("goroot")){
			holder.text.setText("返回根目录");
			holder.icon.setImageBitmap(mIcon1);
			holder.cBox.setChecked(isSelected.get(position));
			holder.cBox.setVisibility(isVisibility.get(position));
		}else if(items.get(position).toString().equals("goparent")){
			holder.text.setText("返回上一级");
			holder.icon.setImageBitmap(mIcon2);
			holder.cBox.setChecked(isSelected.get(position));
			holder.cBox.setVisibility(isVisibility.get(position));
		}else{
			holder.text.setText(f.getName());
			if(f.isDirectory()){
				holder.icon.setImageBitmap(mIcon3);
				holder.cBox.setChecked(isSelected.get(position));
				holder.cBox.setVisibility(isVisibility.get(position));
			}else{
				holder.icon.setImageBitmap(mIcon4);
				holder.cBox.setChecked(isSelected.get(position));
				holder.cBox.setVisibility(isVisibility.get(position));
			}
		}
		return convertView;
	}

	public List<ViewHolder> getVHs() {
		return VHs;
	}

	public final class ViewHolder
	{
		public TextView text;
		public ImageView icon;
		public CheckBox cBox;  
	}
}

 file_row.xml(layout)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="@+id/file_items"
	android:layout_width="fill_parent" 
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_height="wrap_content" 
	android:paddingBottom="4dip"
	android:paddingLeft="12dip" 
	android:paddingRight="12dip">
  <ImageView android:id="@+id/fileicon"
    android:layout_height="wrap_content"
	android:textSize="26dip"
	android:layout_alignParentLeft="true"
	android:layout_width="wrap_content"
	android:layout_below="@+id/file_items"/>
  <TextView android:id="@+id/filetext"
    android:layout_gravity="center_vertical"
    android:layout_width="fill_parent"
    android:layout_toRightOf="@id/fileicon"
    android:paddingLeft="20dip"
    android:layout_height="wrap_content"/>
  <CheckBox android:id="@+id/file_check" 
	    style="?android:attr/starStyle"
		android:layout_height="wrap_content" 
		android:layout_width="wrap_content" 
		android:layout_alignParentRight="true"
		android:focusable="false"   
        android:focusableInTouchMode="false"   
        android:clickable="false"
		android:layout_below="@+id/file_items"/>
</RelativeLayout>