Android文件浏览器

来源：互联网发布：淘宝网什么最好卖编辑：程序博客网时间：2024/06/05 21:19

1.接口

package com.gst.user.application.tools;/** * Created by user on 12/22/15. */public interface OnFileBrowserListener {    public void onFileItemClick(String fileName);    public void onDirItemClick(String path);}

package com.gst.user.application.tools;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Stack;import android.content.Context;import android.graphics.Color;import android.util.AttributeSet;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.TextView;public class FileBrowser extends ListView implements        android.widget.AdapterView.OnItemClickListener{    private final String namespace = "http://com.gst.user.application.tools";    private String sdcardDirectory;    private List<File> fileList = new ArrayList<File>();    private Stack<String> dirStack = new Stack<String>();    private FileListAdapter fileListAdapter;    private OnFileBrowserListener onFileBrowserListener;    private int folderImageResId;    private int otherFileImageResId;    private Map<String, Integer> fileImageResIdMap = new HashMap<String, Integer>();    private boolean onlyFolder = false;    public FileBrowser(Context context, AttributeSet attrs)    {        super(context, attrs);        sdcardDirectory = android.os.Environment.getExternalStorageDirectory()                .toString();        setOnItemClickListener(this);        setBackgroundColor(Color.WHITE);        folderImageResId = attrs.getAttributeResourceValue(namespace,                "folderImage", 0);        otherFileImageResId = attrs.getAttributeResourceValue(namespace,                "otherFileImage", 0);        onlyFolder = attrs.getAttributeBooleanValue(namespace, "onlyFolder",                false);        int index = 1;        while (true)        {            String extName = attrs.getAttributeValue(namespace, "extName"                    + index);            int fileImageResId = attrs.getAttributeResourceValue(namespace,                    "fileImage" + index, 0);            if ("".equals(extName) || extName == null || fileImageResId == 0)            {                break;            }            fileImageResIdMap.put(extName, fileImageResId);            index++;        }        dirStack.push(sdcardDirectory);        addFiles();        fileListAdapter = new FileListAdapter(getContext());        setAdapter(fileListAdapter);    }    private void addFiles()    {        fileList.clear();        String currentPath = getCurrentPath();        File[] files = new File(currentPath).listFiles();        if (dirStack.size() > 1)            fileList.add(null);        for (File file : files)        {            if (onlyFolder)            {                if (file.isDirectory())                    fileList.add(file);            }            else            {                fileList.add(file);            }        }    }    private String getCurrentPath()    {        String path = "";        for (String dir : dirStack)        {            path += dir + "/";        }        path = path.substring(0, path.length() - 1);        return path;    }    private String getExtName(String filename)    {        int position = filename.lastIndexOf(".");        if (position >= 0)            return filename.substring(position + 1);        else            return "";    }    @Override    public void onItemClick(AdapterView<?> parent, View view, int position,                            long id)    {        if (fileList.get(position) == null)        {            dirStack.pop();            addFiles();            fileListAdapter.notifyDataSetChanged();            if (onFileBrowserListener != null)            {                onFileBrowserListener.onDirItemClick(getCurrentPath());            }        }        else if (fileList.get(position).isDirectory())        {            dirStack.push(fileList.get(position).getName());            addFiles();            fileListAdapter.notifyDataSetChanged();            if (onFileBrowserListener != null)            {                onFileBrowserListener.onDirItemClick(getCurrentPath());            }        }        else        {            if (onFileBrowserListener != null)            {                String filename = getCurrentPath() + "/"                        + fileList.get(position).getName();                onFileBrowserListener.onFileItemClick(filename);            }        }    }    private class FileListAdapter extends BaseAdapter    {        private Context context;        public FileListAdapter(Context context)        {            this.context = context;        }        @Override        public int getCount()        {            return fileList.size();        }        @Override        public Object getItem(int position)        {            return fileList.get(position);        }        @Override        public long getItemId(int position)        {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent)        {            LinearLayout fileLayout = new LinearLayout(context);            fileLayout.setLayoutParams(new LayoutParams(                    LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));            fileLayout.setOrientation(LinearLayout.HORIZONTAL);            fileLayout.setPadding(5, 10, 0, 10);            ImageView ivFile = new ImageView(context);            ivFile.setLayoutParams(new LayoutParams(48, 48));            TextView tvFile = new TextView(context);            tvFile.setTextColor(android.graphics.Color.WHITE);            tvFile.setTextAppearance(context,                    android.R.style.TextAppearance_Large);            tvFile.setPadding(5, 5, 0, 0);            if (fileList.get(position) == null)            {                if (folderImageResId > 0)                    ivFile.setImageResource(folderImageResId);                tvFile.setText(". .");            }            else if (fileList.get(position).isDirectory())            {                if (folderImageResId > 0)                    ivFile.setImageResource(folderImageResId);                tvFile.setText(fileList.get(position).getName());            }            else            {                tvFile.setText(fileList.get(position).getName());                Integer resId = fileImageResIdMap.get(getExtName(fileList.get(                        position).getName()));                int fileImageResId = 0;                if (resId != null)                {                    if (resId > 0)                    {                        fileImageResId = resId;                    }                }                if (fileImageResId > 0)                    ivFile.setImageResource(fileImageResId);                else if (otherFileImageResId > 0)                    ivFile.setImageResource(otherFileImageResId);            }            tvFile.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,                    LayoutParams.WRAP_CONTENT));            fileLayout.addView(ivFile);            fileLayout.addView(tvFile);            return fileLayout;        }    }    public void setOnFileBrowserListener(OnFileBrowserListener listener)    {        this.onFileBrowserListener = listener;    }}

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