package com.lfk.justwetools.View.FileExplorer;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import com.lfk.justwetools.R;
import java.io.File;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
public class FileExplorer extends ListView {
private String dir = Environment.getExternalStorageDirectory().getPath();
private String root = Environment.getExternalStorageDirectory().getPath();
private List<Map<String, Object>> fileList = new ArrayList<>();
private OnFolderChosenListener folderChosenListener = null;
private OnPathChangedListener pathChangedListener = null;
private OnFileChosenListener fileChosenListener = null;
private SimpleAdapter listAdapter = null;
private Context context;
////////////////////////////////////////////////////////////////////////////
////////////////// Default Constructor ///////////////////////
////////////////////////////////////////////////////////////////////////////
public FileExplorer(Context context) {
super(context);
initList(context);
}
public FileExplorer(Context context, AttributeSet attrs) {
super(context, attrs);
initList(context);
}
public FileExplorer(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initList(context);
}
////////////////////////////////////////////////////////////////////////////
//////////////// Automatic Constructor ///////////////////////
////////////////////////////////////////////////////////////////////////////
/**
* 自定义初始化
*/
private void initList(Context context) {
this.context = context;
listAdapter = new SimpleAdapter(
context,
fileList,
R.layout.list_item,
new String[]{"image", "filename"},
new int[]{R.id.list_image, R.id.list_text});
initListener();
this.setAdapter(listAdapter);
setCurrentDir(dir);
}
////////////////////////////////////////////////////////////////////////////
///////////////////////// Listener ///////////////////////////
////////////////////////////////////////////////////////////////////////////
private void initListener() {
this.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String fileName = ((TextView) view.findViewById(R.id.list_text)).getText().toString();
try {
File file = new File(dir + "/" + fileName);
if (file.isFile()) {
if(fileChosenListener == null) {
String mime = getMIMEType(file);
if (mime != null) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file://" + file.getPath()), mime);
context.startActivity(intent);
}
} else {
fileChosenListener.onFileChosen(Uri.parse("file://" + file.getPath()));
}
} else if (file.isDirectory()) {
setCurrentDir(file.getPath());
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
this.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(final AdapterView<?> parent, View view, int position, long id) {
final String fileName = ((TextView) view.findViewById(R.id.list_text)).getText().toString();
if(new File(dir + "/" + fileName).isDirectory()) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setMessage("确认选择该文件夹吗？");
builder.setTitle("提示");
builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
if (folderChosenListener != null)
folderChosenListener.onItemChosen(dir + "/" + fileName);
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create().show();
}
return true;
}
});
}
public void setOnItemChosenListener(OnFolderChosenListener listener) {
this.folderChosenListener = listener;
}
public void setOnPathChangedListener(OnPathChangedListener listener) {
this.pathChangedListener = listener;
}
public void setOnFileChosenListener(OnFileChosenListener fileChosenListener) {
this.fileChosenListener = fileChosenListener;
}
////////////////////////////////////////////////////////////////////////////
//////////////////////// File Utils ///////////////////////////
////////////////////////////////////////////////////////////////////////////
/**
* 获取文件的后缀名
*
* @param file 接受一个文件，返回该文件的后缀名，如果是目录则返回null
*/
public String getType(File file){
if(file.isDirectory())
return null;
int dotIndex = file.getName().lastIndexOf(".");
if(dotIndex < 0)
return "";
return file.getName().substring(dotIndex).toLowerCase();
}
/**
* 获取文件的MIME类型
*
* @param file 接受一个文件，返回该文件的MIME，如果是目录则返回null
*/
private String getMIMEType(File file) {
String type = getType(file);
//在MIME和文件类型的匹配表中找到对应的MIME类型。
if(type != null) {
boolean found = false;
for (String[] data : MIME_Table) {
if (type.equals(data[0])) {
type = data[1];
found = true;
break;
}
}
if(!found)
type = "*/*";
}
return type;
}
////////////////////////////////////////////////////////////////////////////
///////////////////////// Settings ///////////////////////////
////////////////////////////////////////////////////////////////////////////
/**
* 设置并刷新浏览目录
*/
public void setCurrentDir(String path) {
File[] files = (new File(path)).listFiles();
//如果这不是一个路径
if (files == null)
return;
dir = path;
//更新Map
fileList.clear();
for (File file : files) {
Map<String, Object> fileInfo = new Hashtable<>();
if (file.isFile())
fileInfo.put("image", Images[1]);
else
fileInfo.put("image", Images[0]);
fileInfo.put("filename", file.getName());
fileList.add(fileInfo);
}
listAdapter.notifyDataSetChanged();
if(pathChangedListener != null)
pathChangedListener.onPathChanged(path);
}
/**
* 返回上一级目录
*/
public boolean toParentDir() {
File file = new File(dir);
String parentDir = file.getParent();
if(parentDir != null && !file.getPath().equals(root)) {
dir = parentDir;
setCurrentDir(dir);
return true;
}
return false;
}
public void setRootDir(String rootDir) {
this.root = rootDir;
}
/**
* 刷新重新载入
*/
public void refresh() {
setCurrentDir(dir);
}
/**
* 获取当前路径
*/
public String getCurrentPath() {
return dir;
}
////////////////////////////////////////////////////////////////////////////
//////////////////////// Extras ///////////////////////////
////////////////////////////////////////////////////////////////////////////
/**
* 获取文件类型大小比例
*/
private void getProportion (TreeMap<String,Long> map,String path) throws Exception {
File[] files = new File(path).listFiles();
//如果这不是一个路径
if (files == null)
throw new Exception("EMPTY OR ROOT FILE");
for (File file : files) {
if (file.isFile()) {
String type = getType(file).replace(".", "");
if (map.containsKey(type))
map.put(type, map.get(type) + file.length());
else
map.put(type, file.length());
} else if (file.isDirectory()) {
getProportion(map, file.getPath());
}
}
}
public TreeMap<String, Long> getPropotionText(String path) throws Exception {
TreeMap<String, Long> buf = new TreeMap<>();
getProportion(buf, path);
TreeMap<String, Long> map = new TreeMap<>(new SizeComparator(buf));
map.putAll(buf);
return map;
}
class SizeComparator implements Comparator<String> {
TreeMap<String, Long> map;
SizeComparator(TreeMap<String, Long> map){
this.map = map;
}
@Override
public int compare(String a, String b) {
if(map.get(a).equals(map.get(b)))
return 0;
return map.get(a) > map.get(b) ? 1 : -1;
}
}
////////////////////////////////////////////////////////////////////////////
//////////////////////// Resources ///////////////////////////
////////////////////////////////////////////////////////////////////////////
// 文件夹&文件 图片
private int[] Images = {R.drawable.file,R.drawable.afile};
//MIME类型集合，{后缀名，MIME类型}
public static final String[][] MIME_Table = {
{".3gp", "video/3gp"},
{".apk", "application/vnd.android.package-archive"},
{".asf", "video/x-ms-asf"},
{".avi", "video/x-msvideo"},
{".bin", "application/octet-stream"},
{".bmp", "image/bmp"},
{".c", "text/plain"},
{".class", "application/octet-stream"},
{".conf", "text/plain"},
{".cpp", "text/plain"},
{".doc", "application/msword"},
{".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
{".xls", "application/vnd.ms-excel"},
{".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
{".exe", "application/octet-stream"},
{".gif", "image/gif"},
{".gtar", "application/x-gtar"},
{".gz", "application/x-gzip"},
{".h", "text/plain"},
{".htm", "text/html"},
{".html", "text/html"},
{".jar", "application/java-archive"},
{".java", "text/plain"},
{".jpeg", "image/jpeg"},
{".jpg", "image/jpeg"},
{".js", "application/x-javascript"},
{".log", "text/plain"},
{".m3u", "audio/x-mpegurl"},
{".m4a", "audio/mp4a-latm"},
{".m4b", "audio/mp4a-latm"},
{".m4p", "audio/mp4a-latm"},
{".m4u", "video/vnd.mpegurl"},
{".m4v", "video/x-m4v"},
{".mov", "video/quicktime"},
{".mp2", "audio/x-mpeg"},
{".mp3", "audio/x-mpeg"},
{".mp4", "video/mp4"},
{".mpc", "application/vnd.mpohun.certificate"},
{".mpe", "video/mpeg"},
{".mpeg", "video/mpeg"},
{".mpg", "video/mpeg"},
{".mpg4", "video/mp4"},
{".mpga", "audio/mpeg"},
{".msg", "application/vnd.ms-outlook"},
{".ogg", "audio/ogg"},
{".pdf", "application/pdf"},
{".png", "image/png"},
{".pps", "application/vnd.ms-powerpoint"},
{".ppt", "application/vnd.ms-powerpoint"},
{".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
{".prop", "text/plain"},
{".rc", "text/plain"},
{".rmvb", "audio/x-pn-realaudio"},
{".rtf", "application/rtf"},
{".sh", "text/plain"},
{".tar", "application/x-tar"},
{".tgz", "application/x-compressed"},
{".txt", "text/plain"},
{".wav", "audio/x-wav"},
{".wma", "audio/x-ms-wma"},
{".wmv", "audio/x-ms-wmv"},
{".wps", "application/vnd.ms-works"},
{".xml", "text/plain"},
{".z", "application/x-compress"},
{".zip", "application/x-zip-compressed"},
{"", "*/*"}
};
}