android 文件 浏览器 源码

package com.android.FileBrowser; import java.io.File; import java.util.ArrayList; import java.util.List; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.app.Activity; import android.app.AlertDialog; import android.app.ListActivity; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.util.Log; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.ListView; import android.widget.TextView; import android.view.KeyEvent; public class Main extends ListActivity { private TextView _filePath; private List<FileInfo> _files; private String _rootPath = FileUtil.getSDPath(); private String _currentPath = _rootPath; private final String TAG = "Main"; private final int MENU_RENAME = Menu.FIRST; private final int MENU_COPY = Menu.FIRST + 3; private final int MENU_MOVE = Menu.FIRST + 4; private final int MENU_DELETE = Menu.FIRST + 5; private final int MENU_INFO = Menu.FIRST + 6; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); _filePath = (TextView) findViewById(R.id.file_path); // 获取当前目录的文件列表 viewFiles(_currentPath); // 绑定长按事件 // getListView().setOnItemLongClickListener(_onItemLongClickListener); // 注册上下文菜单 registerForContextMenu(getListView()); } /** 上下文菜单 **/ @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); AdapterView.AdapterContextMenuInfo info = null; try { info = (AdapterView.AdapterContextMenuInfo) menuInfo; } catch (ClassCastException e) { Log.e(TAG, "bad menuInfo", e); return; } FileInfo f = _files.get(info.position); menu.setHeaderTitle(f.Name); menu.add(0, MENU_RENAME, 1, getString(R.string.file_rename)); menu.add(0, MENU_COPY, 2, getString(R.string.file_copy)); menu.add(0, MENU_MOVE, 3, getString(R.string.file_move)); menu.add(0, MENU_DELETE, 4, getString(R.string.file_delete)); menu.add(0, MENU_INFO, 5, getString(R.string.file_info)); } /** 上下文菜单事件处理 **/ public boolean onContextItemSelected(MenuItem item) { AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); FileInfo fileInfo = _files.get(info.position); File f = new File(fileInfo.Path); switch (item.getItemId()) { case MENU_RENAME: FileActivityHelper.renameFile(Main.this, f, renameFileHandler); return true; case MENU_COPY: pasteFile(f.getPath(), "COPY"); return true; case MENU_MOVE: pasteFile(f.getPath(), "MOVE"); return true; case MENU_DELETE: FileUtil.deleteFile(f); viewFiles(_currentPath); return true; case MENU_INFO: FileActivityHelper.viewFileInfo(Main.this, f); return true; default: return super.onContextItemSelected(item); } } /** 行被点击事件处理 **/ @Override protected void onListItemClick(ListView l, View v, int position, long id) { FileInfo f = _files.get(position); if (f.IsDirectory) { viewFiles(f.Path); } else { openFile(f.Path); } } /** 重定义返回键事件 **/ @Override public boolean onKeyDown(int keyCode, KeyEvent event) { // 拦截back按键 if (keyCode == KeyEvent.KEYCODE_BACK) { File f = new File(_currentPath); String parentPath = f.getParent(); if (parentPath != null) { viewFiles(parentPath); } else { exit(); } return true; } return super.onKeyDown(keyCode, event); } /** 获取从PasteFile传递过来的路径 **/ @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (Activity.RESULT_OK == resultCode) { Bundle bundle = data.getExtras(); if (bundle != null && bundle.containsKey("CURRENTPATH")) { viewFiles(bundle.getString("CURRENTPATH")); } } } /** 创建菜单 **/ public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = this.getMenuInflater(); inflater.inflate(R.menu.main_menu, menu); return true; } /** 菜单事件 **/ public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.mainmenu_home: viewFiles(_rootPath); break; case R.id.mainmenu_refresh: viewFiles(_currentPath); break; case R.id.mainmenu_createdir: FileActivityHelper.createDir(Main.this, _currentPath, createDirHandler); break; case R.id.mainmenu_exit: exit(); break; default: break; } return true; } /** 获取该目录下所有文件 **/ private void viewFiles(String filePath) { ArrayList<FileInfo> tmp = FileActivityHelper.getFiles(Main.this, filePath); if (tmp != null) { // 清空数据 if (_files != null) { _files.clear(); } _files = tmp; // 设置当前目录 _currentPath = filePath; _filePath.setText(filePath); // 绑定数据 setListAdapter(new FileAdapter(this, _files)); } } /** 长按事件处理 **/ /** * private OnItemLongClickListener _onItemLongClickListener = new * OnItemLongClickListener() { * * @Override public boolean onItemLongClick(AdapterView<?> parent, View * view, int position, long id) { Log.e(TAG, "position:" + * position); return true; } }; **/ /** 打开文件 **/ private void openFile(String path) { Intent intent = new Intent(); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setAction(android.content.Intent.ACTION_VIEW); File f = new File(path); String type = FileUtil.getMIMEType(f.getName()); intent.setDataAndType(Uri.fromFile(f), type); startActivity(intent); } /** 重命名回调委托 **/ private final Handler renameFileHandler = new Handler() { @Override public void handleMessage(Message msg) { if (msg.what == 0) viewFiles(_currentPath); } }; /** 创建文件夹回调委托 **/ private final Handler createDirHandler = new Handler() { @Override public void handleMessage(Message msg) { if (msg.what == 0) viewFiles(_currentPath); } }; /** 粘贴文件 **/ private void pasteFile(String path, String action) { Intent intent = new Intent(); Bundle bundle = new Bundle(); bundle.putString("CURRENTPASTEFILEPATH", path); bundle.putString("ACTION", action); intent.putExtras(bundle); intent.setClass(Main.this, PasteFile.class); // 打开一个Activity并等待结果 startActivityForResult(intent, 0); } /** 退出程序 **/ private void exit() { new AlertDialog.Builder(Main.this).setMessage(R.string.confirm_exit).setCancelable(false) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Main.this.finish(); android.os.Process.killProcess(android.os.Process.myPid()); System.exit(0); } }).setNegativeButton("No", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }).show(); } }