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文件管理器
1 package com.supermario.filemanager; 2 3 import java.io.File; 4 import java.io.FileInputStream; 5 import java.io.FileNotFoundException; 6 import java.io.FileOutputStream; 7 import java.io.IOException; 8 import java.util.ArrayList; 9 import java.util.HashMap; 10 import java.util.List; 11 12 import com.supermario.filemanager.MainActivity.FileAdapter.ViewHolder; 13 14 import android.app.AlertDialog; 15 import android.app.ListActivity; 16 import android.app.ProgressDialog; 17 import android.app.AlertDialog.Builder; 18 import android.content.BroadcastReceiver; 19 import android.content.Context; 20 import android.content.DialogInterface; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 import android.content.ServiceConnection; 24 import android.content.DialogInterface.OnClickListener; 25 import android.graphics.Bitmap; 26 import android.graphics.BitmapFactory; 27 import android.net.Uri; 28 import android.os.Bundle; 29 import android.os.Environment; 30 import android.util.Log; 31 import android.view.Gravity; 32 import android.view.LayoutInflater; 33 import android.view.View; 34 import android.view.ViewGroup; 35 import android.widget.AdapterView; 36 import android.widget.BaseAdapter; 37 import android.widget.EditText; 38 import android.widget.GridView; 39 import android.widget.ImageView; 40 import android.widget.LinearLayout; 41 import android.widget.ListView; 42 import android.widget.RadioButton; 43 import android.widget.RadioGroup; 44 import android.widget.SimpleAdapter; 45 import android.widget.TextView; 46 import android.widget.Toast; 47 import android.widget.AdapterView.OnItemClickListener; 48 import android.widget.AdapterView.OnItemLongClickListener; 49 50 public class MainActivity extends ListActivity implements OnItemLongClickListener{ 51 // 声明成员变量： 52 //存放显示的文件列表的名称 53 private List<String> mFileNames = null; 54 //存放显示的文件列表的相对应的路径 55 private List<String> mFilePaths = null; 56 //起始目录“/” 57 private String mRootPath = java.io.File.separator; 58 // SD卡根目录 59 private String mSDCard = Environment.getExternalStorageDirectory().toString(); 60 private String mOldFilePath = ""; 61 private String mNewFilePath = ""; 62 private String keyWords; 63 //用于显示当前路径 64 private TextView mPathTextView; 65 //用于放置工具栏 66 private GridView mToolbarGridView; 67 private int[] girdview_menu_image = {R.drawable.menu_phone,R.drawable.menu_sdcard,R.drawable.menu_search, 68 R.drawable.menu_create,R.drawable.menu_palse,R.drawable.menu_exit}; 69 private String[] gridview_menu_title = {"手机","SD卡","搜索","创建","粘贴","退出"}; 70 // 代表手机或SD卡，1代表手机，2代表SD卡 71 private static int menuPosition = 1; 72 73 @Override 74 public void onCreate(Bundle savedInstanceState) { 75 super.onCreate(savedInstanceState); 76 setContentView(R.layout.main); 77 mPathTextView = (TextView)findViewById(R.id.mPath); 78 mToolbarGridView = (GridView)findViewById(R.id.file_gridview_toolbar); 79 //一开始程序的时候加载手机目录下的文件列表 80 initFileListInfo(mRootPath); 81 //初始化菜单视图 82 initGridViewMenu(); 83 //初始化菜单监听器 84 initMenuListener(); 85 //为列表项绑定长按监听器 86 getListView().setOnItemLongClickListener(this); 87 88 89 90 } 91 92 public static String mCurrentFilePath=""; 93 private void initFileListInfo(String filePath) { 94 mCurrentFilePath = filePath; 95 //显示当前的路径 96 mPathTextView.setText(filePath); 97 mFileNames = new ArrayList<String>(); 98 mFilePaths = new ArrayList<String>(); 99 File mFile = new File(filePath);100 //遍历出该文件夹路径下的所有文件/文件夹101 File[] mFiles = mFile.listFiles();102 //只要当前路径不是手机根目录或者是sd卡根目录则显示“返回根目录”和“返回上一级”103 if(menuPosition == 1&&!mCurrentFilePath.equals(mRootPath)){104 initAddBackUp(filePath,mRootPath);105 }else if(menuPosition == 2&&!mCurrentFilePath.equals(mSDCard)){106 initAddBackUp(filePath,mSDCard);107 }108 109 /*将所有文件信息添加到集合中*/110 for(File mCurrentFile:mFiles){111 mFileNames.add(mCurrentFile.getName());112 mFilePaths.add(mCurrentFile.getPath());113 }114 115 /*适配数据*/116 setListAdapter(new FileAdapter(MainActivity.this,mFileNames,mFilePaths));117 }118 119 private boolean isAddBackUp = false;120 private void initAddBackUp(String filePath,String phone_sdcard){121 if(!filePath.equals(phone_sdcard)){122 /*列表项的第一项设置为返回根目录*/123 mFileNames.add("BacktoRoot");124 mFilePaths.add(phone_sdcard);125 126 /*列表项的第二项设置为返回上一级*/127 mFileNames.add("BacktoUp");128 //回到当前目录的父目录即回到上级129 mFilePaths.add(new File(filePath).getParent());130 //将添加返回按键标识位置为true131 isAddBackUp = true;132 }133 134 }135 136 /**为GridView配饰菜单资源*/137 private void initGridViewMenu(){138 139 //设置选中时候的背景图片140 mToolbarGridView.setSelector(R.drawable.menu_item_selected);141 //设置背景图片142 mToolbarGridView.setBackgroundResource(R.drawable.menu_background);143 //设置列数144 mToolbarGridView.setNumColumns(6);145 //设置剧中对齐146 mToolbarGridView.setGravity(Gravity.CENTER);147 //设置水平，垂直间距为10148 mToolbarGridView.setVerticalSpacing(10);149 mToolbarGridView.setHorizontalSpacing(10);150 //设置适配器151 mToolbarGridView.setAdapter(getMenuAdapter(gridview_menu_title,girdview_menu_image));152 }153 154 /**菜单项的监听*/155 protected void initMenuListener(){156 mToolbarGridView.setOnItemClickListener(new OnItemClickListener(){157 158 public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {159 switch(arg2)160 {161 //回到根目录162 case 0:163 menuPosition = 1;164 initFileListInfo(mRootPath);165 break;166 //回到SD卡根目录167 case 1:168 menuPosition = 2;169 initFileListInfo(mSDCard);170 break;171 //显示搜索对话框172 case 2:173 searchDilalog();174 break;175 // //创建文件夹176 case 3:177 createFolder();178 break;179 // //粘贴文件180 case 4:181 palseFile();182 break;183 //退出184 case 5:185 MainActivity.this.finish();186 break;187 }188 } 189 });190 }191 192 193 private String mNewFolderName = "";194 private File mCreateFile;195 private RadioGroup mCreateRadioGroup;196 private static int mChecked;197 /**创建文件夹的方法:当用户点击软件下面的创建菜单的时候，是在当前目录下创建的一个文件夹198 * 静态变量mCurrentFilePath存储的就是当前路径199 * java.io.File.separator是JAVA给我们提供的一个File类中的静态成员，它会根据系统的不同来创建分隔符200 * mNewFolderName正是我们要创建的新文件的名称，从EditText组件上得到的*/201 private void createFolder(){202 //用于标识当前选中的是文件或者文件夹203 mChecked = 2;204 LayoutInflater mLI = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);205 //初始化对话框布局206 final LinearLayout mLL = (LinearLayout)mLI.inflate(R.layout.create_dialog, null);207 mCreateRadioGroup = (RadioGroup)mLL.findViewById(R.id.radiogroup_create);208 final RadioButton mCreateFileButton = (RadioButton)mLL.findViewById(R.id.create_file);209 final RadioButton mCreateFolderButton = (RadioButton)mLL.findViewById(R.id.create_folder);210 //设置默认为创建文件夹211 mCreateFolderButton.setChecked(true);212 //为按钮设置监听器213 mCreateRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){214 //当选择改变时触发215 public void onCheckedChanged(RadioGroup arg0, int arg1) {216 if(arg1 == mCreateFileButton.getId()){217 mChecked = 1;218 }else if(arg1 == mCreateFolderButton.getId()){219 mChecked = 2;220 }221 } 222 });223 //显示对话框224 Builder mBuilder = new AlertDialog.Builder(MainActivity.this)225 .setTitle("新建")226 .setView(mLL)227 .setPositiveButton("创建", new DialogInterface.OnClickListener(){228 public void onClick(DialogInterface dialog, int which) {229 //或者用户输入的名称230 mNewFolderName = ((EditText)mLL.findViewById(R.id.new_filename)).getText().toString();231 if(mChecked == 1){232 try {233 mCreateFile = new File(mCurrentFilePath+java.io.File.separator+mNewFolderName+".txt");234 mCreateFile.createNewFile();235 //刷新当前目录文件列表236 initFileListInfo(mCurrentFilePath);237 } catch (IOException e) {238 Toast.makeText(MainActivity.this, "文件名拼接出错..!!", Toast.LENGTH_SHORT).show();239 }240 }else if(mChecked == 2){241 mCreateFile = new File(mCurrentFilePath+java.io.File.separator+mNewFolderName);242 if(!mCreateFile.exists()&&!mCreateFile.isDirectory()&&mNewFolderName.length() != 0){243 if(mCreateFile.mkdirs()){244 //刷新当前目录文件列表245 initFileListInfo(mCurrentFilePath);246 }else{247 Toast.makeText(MainActivity.this, "创建失败，可能是系统权限不够，root一下？！", Toast.LENGTH_SHORT).show();248 }249 }else{250 Toast.makeText(MainActivity.this, "文件名为空，还是重名了呢？", Toast.LENGTH_SHORT).show();251 }252 } 253 }254 }).setNeutralButton("取消", null);255 mBuilder.show();256 }257 /**粘贴*/258 private void palseFile(){259 mNewFilePath = mCurrentFilePath+java.io.File.separator+mCopyFileName;//得到新路径260 Log.d("copy", "mOldFilePath is "+mOldFilePath+"| mNewFilePath is "+mNewFilePath+"| isCopy is "+isCopy);261 if(!mOldFilePath.equals(mNewFilePath)&&isCopy == true){//在不同路径下复制才起效262 if(!new File(mNewFilePath).exists()){263 copyFile(mOldFilePath,mNewFilePath);264 Toast.makeText(MainActivity.this, "执行了粘贴", Toast.LENGTH_SHORT).show();265 initFileListInfo(mCurrentFilePath);266 }else{267 new AlertDialog.Builder(MainActivity.this)268 .setTitle("提示!")269 .setMessage("该文件名已存在，是否要覆盖?")270 .setPositiveButton("确定", new DialogInterface.OnClickListener(){271 public void onClick(DialogInterface dialog,int which){272 copyFile(mOldFilePath,mNewFilePath);273 initFileListInfo(mCurrentFilePath);274 }275 })276 .setNegativeButton("取消", null).show();277 }278 }else{279 Toast.makeText(MainActivity.this, "未复制文件！", Toast.LENGTH_LONG).show();280 }281 }282 283 private int i;284 FileInputStream fis;285 FileOutputStream fos;286 //复制文件287 private void copyFile(String oldFile,String newFile){288 try {289 fis = new FileInputStream(oldFile);290 fos = new FileOutputStream(newFile);291 do{292 //逐个byte读取文件，并写入另一个文件中293 if((i = fis.read()) != -1){294 fos.write(i);295 }296 }while(i != -1);297 //关闭输入文件流298 if(fis != null){299 fis.close();300 }301 //关闭输出文件流302 if(fos != null){303 fos.close();304 }305 } catch (FileNotFoundException e) {306 e.printStackTrace();307 } catch (IOException e) {308 e.printStackTrace();309 }310 }311 312 /**菜单适配器*/313 private SimpleAdapter getMenuAdapter(String[] menuNameArray,314 int[] imageResourceArray) {315 //数组列表用于存放映射表316 ArrayList<HashMap<String, Object>> mData = http://www.mamicode.com/new ArrayList<HashMap<String, Object>>();317 for (int i = 0; i < menuNameArray.length; i++) {318 HashMap<String, Object> mMap = new HashMap<String, Object>();319 //将“image”映射成图片资源320 mMap.put("image", imageResourceArray[i]);321 //将“title”映射成标题322 mMap.put("title", menuNameArray[i]); 323 mData.add(mMap);324 }325 //新建简单适配器，设置适配器的布局文件，映射关系326 SimpleAdapter mAdapter = new SimpleAdapter(this, mData,R.layout.item_menu, new String[] { "image", "title" },new int[] { R.id.item_image, R.id.item_text });327 return mAdapter;328 }329 /**列表项点击时的事件监听*/330 @Override331 protected void onListItemClick(ListView listView, View view, int position, long id){332 final File mFile = new File(mFilePaths.get(position));333 //如果该文件是可读的，我们进去查看文件334 if(mFile.canRead()){335 if(mFile.isDirectory()){336 //如果是文件夹，则直接进入该文件夹，查看文件目录337 initFileListInfo(mFilePaths.get(position));338 }339 else340 {341 openFile(mFile); 342 }343 344 }345 else346 {347 //如果该文件不可读，我们给出提示不能访问，防止用户操作系统文件造成系统崩溃等348 Toast.makeText(MainActivity.this, "对不起，您的访问权限不足!", Toast.LENGTH_SHORT).show();349 }350 }351 352 /**调用系统的方法，来打开文件的方法*/353 private void openFile(File file){354 if(file.isDirectory()){355 initFileListInfo(file.getPath());356 }else{357 Intent intent = new Intent();358 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);359 intent.setAction(android.content.Intent.ACTION_VIEW);360 //设置当前文件类型361 intent.setDataAndType(Uri.fromFile(file), getMIMEType(file));362 startActivity(intent);363 }364 }365 /**获得MIME类型的方法*/366 private String getMIMEType(File file){367 String type = "";368 String fileName = file.getName();369 //取出文件后缀名并转成小写370 String fileEnds = fileName.substring(fileName.lastIndexOf(".")+1,fileName.length()).toLowerCase();371 if(fileEnds.equals("m4a")||fileEnds.equals("mp3")||fileEnds.equals("mid")||fileEnds.equals("xmf")||fileEnds.equals("ogg")||fileEnds.equals("wav")){372 type = "audio/*";// 系统将列出所有可能打开音频文件的程序选择器373 }else if(fileEnds.equals("3gp")||fileEnds.equals("mp4")){374 type = "video/*";// 系统将列出所有可能打开视频文件的程序选择器375 }else if(fileEnds.equals("jpg")||fileEnds.equals("gif")||fileEnds.equals("png")||fileEnds.equals("jpeg")||fileEnds.equals("bmp")){376 type = "image/*";// 系统将列出所有可能打开图片文件的程序选择器377 }else{378 type = "*/*"; // 系统将列出所有可能打开该文件的程序选择器379 }380 return type;381 }382 383 384 //长按列表项的事件监听:对长按需要进行一个控制，当列表中包括”返回根目录“和”返回上一级“时，需要对这两列进行屏蔽385 386 @Override387 public boolean onItemLongClick(AdapterView<?> arg0, View arg1, final int position, long arg3) {388 if(isAddBackUp == true){//说明存在返回根目录和返回上一级两列，接下来要对这两列进行屏蔽389 if(position != 0 && position != 1){390 initItemLongClickListener(new File(mFilePaths.get(position)));391 }392 }393 else{394 initItemLongClickListener(new File(mFilePaths.get(position)));395 }396 return false;397 }398 399 private String mCopyFileName;400 private boolean isCopy = false;401 /**长按文件或文件夹时弹出的带ListView效果的功能菜单*/402 private void initItemLongClickListener(final File file){403 OnClickListener listener = new DialogInterface.OnClickListener(){404 //item的值就是从0开始的索引值(从列表的第一项开始)405 public void onClick(DialogInterface dialog, int item) {406 if(file.canRead()){//注意，所有对文件的操作必须是在该文件可读的情况下才可以，否则报错407 if(item == 0){//复制408 if(file.isFile()&&"txt".equals((file.getName().substring(file.getName().lastIndexOf(".")+1, file.getName().length())).toLowerCase())){409 Toast.makeText(MainActivity.this, "已复制!", Toast.LENGTH_SHORT).show();410 //复制标志位，表明已复制文件411 isCopy = true;412 //取得复制文件的名字413 mCopyFileName = file.getName();414 //记录复制文件的路径415 mOldFilePath = mCurrentFilePath+java.io.File.separator+mCopyFileName;416 }else{417 Toast.makeText(MainActivity.this, "对不起,目前只支持复制文本文件!", Toast.LENGTH_SHORT).show();418 }419 }else if(item == 1){//重命名420 initRenameDialog(file);421 }else if(item == 2){//删除422 initDeleteDialog(file);423 }424 }else{425 Toast.makeText(MainActivity.this, "对不起，您的访问权限不足!", Toast.LENGTH_SHORT).show();426 }427 } 428 };429 //列表项名称430 String[] mMenu = {"复制","重命名","删除"};431 //显示操作选择对话框432 new AlertDialog.Builder(MainActivity.this)433 .setTitle("请选择操作!")434 .setItems(mMenu, listener)435 .setPositiveButton("取消",null).show();436 }437 438 439 440 EditText mET;441 //显示重命名对话框442 private void initRenameDialog(final File file){443 LayoutInflater mLI = LayoutInflater.from(MainActivity.this);444 //初始化重命名对话框445 LinearLayout mLL = (LinearLayout)mLI.inflate(R.layout.rename_dialog, null);446 mET = (EditText)mLL.findViewById(R.id.new_filename);447 //显示当前的文件名448 mET.setText(file.getName());449 //设置监听器450 OnClickListener listener = new DialogInterface.OnClickListener(){451 public void onClick(DialogInterface dialog,int which){452 String modifyName = mET.getText().toString();453 final String modifyFilePath = file.getParentFile().getPath()+java.io.File.separator;454 final String newFilePath = modifyFilePath+modifyName;455 //判断该新的文件名是否已经在当前目录下存在456 if(new File(newFilePath).exists()){457 if(!modifyName.equals(file.getName())){//把“重命名”操作时没做任何修改的情况过滤掉458 //弹出该新命名后的文件已经存在的提示，并提示接下来的操作459 new AlertDialog.Builder(MainActivity.this)460 .setTitle("提示!")461 .setMessage("该文件名已存在，是否要覆盖?")462 .setPositiveButton("确定", new DialogInterface.OnClickListener(){463 public void onClick(DialogInterface dialog,int which){464 file.renameTo(new File(newFilePath));465 Toast.makeText(MainActivity.this,466 "the file path is "+new File(newFilePath), Toast.LENGTH_SHORT).show();467 //更新当前目录信息468 initFileListInfo(file.getParentFile().getPath());469 }470 })471 .setNegativeButton("取消", null).show();472 }473 }else{474 //文件名不重复时直接修改文件名后再次刷新列表475 file.renameTo(new File(newFilePath));476 initFileListInfo(file.getParentFile().getPath());477 }478 }479 480 };481 //显示对话框482 AlertDialog renameDialog = new AlertDialog.Builder(MainActivity.this).create();483 renameDialog.setView(mLL);484 renameDialog.setButton("确定", listener);485 renameDialog.setButton2("取消", new DialogInterface.OnClickListener(){ 486 public void onClick(DialogInterface dialog,int which){487 //什么都不做，关闭当前对话框488 } 489 });490 renameDialog.show();491 }492 493 //弹出删除文件/文件夹的对话框494 private void initDeleteDialog(final File file){495 new AlertDialog.Builder(MainActivity.this)496 .setTitle("提示!")497 .setMessage("您确定要删除该"+(file.isDirectory()?"文件夹":"文件")+"吗?")498 .setPositiveButton("确定", new DialogInterface.OnClickListener(){499 public void onClick(DialogInterface dialog,int which){500 if(file.isFile()){501 //是文件则直接删除502 file.delete();503 }else{504 //是文件夹则用这个方法删除505 deleteFolder(file);506 }507 //重新遍历该文件的父目录508 initFileListInfo(file.getParent());509 }510 })511 .setNegativeButton("取消", null).show();512 }513 514 //删除文件夹的方法（递归删除该文件夹下的所有文件）515 public void deleteFolder(File folder){516 File[] fileArray = folder.listFiles();517 if(fileArray.length == 0){518 //空文件夹则直接删除519 folder.delete();520 }else{521 //遍历该目录522 for(File currentFile:fileArray){523 if(currentFile.exists()&¤tFile.isFile()){524 //文件则直接删除525 currentFile.delete();526 }else{527 //递归删除528 deleteFolder(currentFile);529 }530 }531 folder.delete();532 }533 } 534 535 Intent serviceIntent;536 ServiceConnection mSC;537 RadioGroup mRadioGroup;538 static int mRadioChecked;539 public static final String KEYWORD_BROADCAST = "com.supermario.file.KEYWORD_BROADCAST";540 //显示搜索对话框541 private void searchDilalog(){542 //用于确定是在当前目录搜索或者是在整个目录搜索的标志543 mRadioChecked = 1;544 LayoutInflater mLI = LayoutInflater.from(MainActivity.this);545 final View mLL = (View)mLI.inflate(R.layout.search_dialog, null);546 mRadioGroup = (RadioGroup)mLL.findViewById(R.id.radiogroup_search);547 final RadioButton mCurrentPathButton = (RadioButton)mLL.findViewById(R.id.radio_currentpath);548 final RadioButton mWholePathButton = (RadioButton)mLL.findViewById(R.id.radio_wholepath);549 //设置默认选择在当前路径搜550 mCurrentPathButton.setChecked(true);551 mRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){552 //当选择改变时触发553 public void onCheckedChanged(RadioGroup radiogroup, int checkId) {554 //当前路径的标志为1555 if(checkId == mCurrentPathButton.getId()){556 mRadioChecked = 1;557 //整个目录的标志为2558 }else if(checkId == mWholePathButton.getId()){559 mRadioChecked = 2;560 }561 } 562 });563 Builder mBuilder = new AlertDialog.Builder(MainActivity.this)564 .setTitle("搜索").setView(mLL)565 .setPositiveButton("确定", new OnClickListener(){566 public void onClick(DialogInterface arg0, int arg1) {567 keyWords = ((EditText)mLL.findViewById(R.id.edit_search)).getText().toString();568 if(keyWords.length() == 0){569 Toast.makeText(MainActivity.this, "关键字不能为空!", Toast.LENGTH_SHORT).show();570 searchDilalog();571 }else{572 if(menuPosition == 1){573 mPathTextView.setText(mRootPath);574 }else{575 mPathTextView.setText(mSDCard);576 }577 //获取用户输入的关键字并发送广播-开始578 Intent keywordIntent = new Intent();579 keywordIntent.setAction(KEYWORD_BROADCAST);580 //传递搜索的范围区间:1.当前路径下搜索 2.SD卡下搜索581 if(mRadioChecked == 1){582 keywordIntent.putExtra("searchpath", mCurrentFilePath);583 }else{584 keywordIntent.putExtra("searchpath", mSDCard);585 }586 //传递关键字587 keywordIntent.putExtra("keyword", keyWords);588 //到这里为止是携带关键字信息并发送了广播，会在Service服务当中接收该广播并提取关键字进行搜索589 getApplicationContext().sendBroadcast(keywordIntent);590 serviceIntent = new Intent("com.android.service.FILE_SEARCH_START");591 MainActivity.this.startService(serviceIntent);//开启服务，启动搜索592 isComeBackFromNotification = false;593 }594 }595 })596 .setNegativeButton("取消", null);597 mBuilder.create().show();598 }599 600 /**注册广播*/601 private IntentFilter mFilter;602 private FileBroadcast mFileBroadcast;603 private IntentFilter mIntentFilter;604 private SearchBroadCast mServiceBroadCast;605 @Override606 protected void onStart() {607 super.onStart();608 mFilter = new IntentFilter();609 mFilter.addAction(FileService.FILE_SEARCH_COMPLETED);610 mFilter.addAction(FileService.FILE_NOTIFICATION);611 mIntentFilter = new IntentFilter();612 mIntentFilter.addAction(KEYWORD_BROADCAST);613 if(mFileBroadcast == null){614 mFileBroadcast = new FileBroadcast();615 }616 if(mServiceBroadCast == null){617 mServiceBroadCast = new SearchBroadCast();618 }619 this.registerReceiver(mFileBroadcast, mFilter);620 this.registerReceiver(mServiceBroadCast, mIntentFilter);621 }622 623 624 /**注销广播*/625 @Override626 protected void onDestroy() {627 super.onDestroy();628 Log.d("NullPointError", "onDestroy");629 mFileNames.clear();630 mFilePaths.clear();631 this.unregisterReceiver(mFileBroadcast);632 this.unregisterReceiver(mServiceBroadCast);633 }634 635 private String mAction;636 public static boolean isComeBackFromNotification = false;637 /**内部广播类*/638 class FileBroadcast extends BroadcastReceiver{639 @Override640 public void onReceive(Context context, Intent intent) {641 mAction = intent.getAction();642 // 搜索完毕的广播643 if(FileService.FILE_SEARCH_COMPLETED.equals(mAction)){644 mFileNames = intent.getStringArrayListExtra("mFileNameList");645 mFilePaths = intent.getStringArrayListExtra("mFilePathsList");646 Toast.makeText(MainActivity.this, "搜索完毕!", Toast.LENGTH_SHORT).show();647 //这里搜索完毕之后应该弹出一个弹出框提示用户要不要显示数据648 searchCompletedDialog("搜索完毕，是否马上显示结果?");649 getApplicationContext().stopService(serviceIntent);//当搜索完毕的时候停止服务，然后在服务中取消通知650 // 点击通知栏跳转过来的广播651 }else if(FileService.FILE_NOTIFICATION.equals(mAction)){//点击通知回到当前Activity，读取其中信息652 String mNotification = intent.getStringExtra("notification");653 Toast.makeText(MainActivity.this, mNotification, Toast.LENGTH_LONG).show();654 searchCompletedDialog("你确定要取消搜索吗?");655 }656 }657 }658 659 //搜索完毕和点击通知过来时的提示框660 private void searchCompletedDialog(String message){661 Builder searchDialog = new AlertDialog.Builder(MainActivity.this)662 .setTitle("提示")663 .setMessage(message)664 .setPositiveButton("确定", new OnClickListener(){665 public void onClick(DialogInterface dialog,int which) {666 //当弹出框时，需要对这个确定按钮进行一个判断，因为要对不同的情况做不同的处理（2种情况）667 // 1.搜索完毕668 // 2.取消搜索669 if(FileService.FILE_SEARCH_COMPLETED.equals(mAction)){670 if(mFileNames.size() == 0){671 Toast.makeText(MainActivity.this, "无相关文件/文件夹!", Toast.LENGTH_SHORT).show();672 setListAdapter(new FileAdapter(MainActivity.this,mFileNames,mFilePaths));//清空列表673 }else{ 674 //显示文件列表675 setListAdapter(new FileAdapter(MainActivity.this,mFileNames,mFilePaths));676 }677 }else{678 //设置搜索标志为true，679 isComeBackFromNotification = true;680 //关闭服务，取消搜索681 getApplicationContext().stopService(serviceIntent);682 }683 }684 })685 .setNegativeButton("取消", null);686 searchDialog.create();687 searchDialog.show();688 }689 690 691 692 693 class FileAdapter extends BaseAdapter{694 //返回键，各种格式的文件的图标695 private Bitmap mBackRoot;696 private Bitmap mBackUp;697 private Bitmap mImage;698 private Bitmap mAudio;699 private Bitmap mRar;700 private Bitmap mVideo;701 private Bitmap mFolder;702 private Bitmap mApk;703 private Bitmap mOthers;704 private Bitmap mTxt;705 private Bitmap mWeb; 706 private Context mContext;707 //文件名列表708 private List<String> mFileNameList;709 //文件对应的路径列表710 private List<String> mFilePathList;711 712 public FileAdapter(Context context,List<String> fileName,List<String> filePath){713 mContext = context;714 mFileNameList = fileName;715 mFilePathList = filePath;716 //初始化图片资源717 //返回到根目录718 mBackRoot = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.back_to_root);719 //返回到上一级目录720 mBackUp = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.back_to_up);721 //图片文件对应的icon722 mImage = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.image);723 //音频文件对应的icon724 mAudio = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.audio);725 //视频文件对应的icon726 mVideo = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.video);727 //可执行文件对应的icon728 mApk = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.apk);729 //文本文档对应的icon730 mTxt = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.txt);731 //其他类型文件对应的icon732 mOthers = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.others);733 //文件夹对应的icon734 mFolder = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.folder);735 //zip文件对应的icon736 mRar = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.zip_icon);737 //网页文件对应的icon738 mWeb = BitmapFactory.decodeResource(mContext.getResources(),R.drawable.web_browser);739 }740 //获得文件的总数 741 @Override742 public int getCount() {743 return mFilePathList.size();744 }745 //获得当前位置对应的文件名746 @Override747 public Object getItem(int position) {748 return mFileNameList.get(position);749 }750 //获得当前的位置751 @Override752 public long getItemId(int position) {753 return position;754 }755 //获得视图756 @Override757 public View getView(int position, View convertView, ViewGroup viewgroup) {758 ViewHolder viewHolder = null;759 if (convertView == null) {760 viewHolder = new ViewHolder();761 LayoutInflater mLI = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);762 //初始化列表元素界面763 convertView = mLI.inflate(R.layout.list_child, null);764 //获取列表布局界面元素765 viewHolder.mIV = (ImageView)convertView.findViewById(R.id.image_list_childs);766 viewHolder.mTV = (TextView)convertView.findViewById(R.id.text_list_childs);767 //将每一行的元素集合设置成标签768 convertView.setTag(viewHolder);769 } else {770 //获取视图标签771 viewHolder = (ViewHolder) convertView.getTag();772 }773 File mFile = new File(mFilePathList.get(position).toString());774 //如果 775 if(mFileNameList.get(position).toString().equals("BacktoRoot")){776 //添加返回根目录的按钮777 viewHolder.mIV.setImageBitmap(mBackRoot);778 viewHolder.mTV.setText("返回根目录");779 }else if(mFileNameList.get(position).toString().equals("BacktoUp")){780 //添加返回上一级菜单的按钮781 viewHolder.mIV.setImageBitmap(mBackUp);782 viewHolder.mTV.setText("返回上一级");783 }else if(mFileNameList.get(position).toString().equals("BacktoSearchBefore")){784 //添加返回搜索之前目录的按钮785 viewHolder.mIV.setImageBitmap(mBackRoot);786 viewHolder.mTV.setText("返回搜索之前目录");787 }else{788 String fileName = mFile.getName();789 viewHolder.mTV.setText(fileName);790 if(mFile.isDirectory()){791 viewHolder.mIV.setImageBitmap(mFolder);792 }else{793 String fileEnds = fileName.substring(fileName.lastIndexOf(".")+1,fileName.length()).toLowerCase();//取出文件后缀名并转成小写794 if(fileEnds.equals("m4a")||fileEnds.equals("mp3")||fileEnds.equals("mid")||fileEnds.equals("xmf")||fileEnds.equals("ogg")||fileEnds.equals("wav")){795 viewHolder.mIV.setImageBitmap(mVideo);796 }else if(fileEnds.equals("3gp")||fileEnds.equals("mp4")){797 viewHolder.mIV.setImageBitmap(mAudio);798 }else if(fileEnds.equals("jpg")||fileEnds.equals("gif")||fileEnds.equals("png")||fileEnds.equals("jpeg")||fileEnds.equals("bmp")){799 viewHolder.mIV.setImageBitmap(mImage);800 }else if(fileEnds.equals("apk")){801 viewHolder.mIV.setImageBitmap(mApk);802 }else if(fileEnds.equals("txt")){803 viewHolder.mIV.setImageBitmap(mTxt);804 }else if(fileEnds.equals("zip")||fileEnds.equals("rar")){805 viewHolder.mIV.setImageBitmap(mRar);806 }else if(fileEnds.equals("html")||fileEnds.equals("htm")||fileEnds.equals("mht")){807 viewHolder.mIV.setImageBitmap(mWeb);808 }else {809 viewHolder.mIV.setImageBitmap(mOthers);810 }811 } 812 }813 return convertView;814 }815 //用于存储列表每一行元素的图片和文本816 class ViewHolder {817 ImageView mIV;818 TextView mTV;819 }820 821 822 }823 824 825 826 }827 828 829
MainActivity.java
package com.supermario.filemanager;import java.io.File;import java.util.ArrayList;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.os.Handler;import android.os.HandlerThread;import android.os.IBinder;import android.os.Looper;import android.os.Message;import android.util.Log;public class FileService extends Service { private Looper mLooper; private FileHandler mFileHandler; private ArrayList<String> mFileName = null; private ArrayList<String> mFilePaths = null; public static final String FILE_SEARCH_COMPLETED = "com.supermario.file.FILE_SEARCH_COMPLETED"; public static final String FILE_NOTIFICATION = "com.supermario.file.FILE_NOTIFICATION"; @Override public IBinder onBind(Intent arg0) { return null; } //创建服务 @Override public void onCreate() { super.onCreate(); Log.d("FileService", "file service is onCreate"); //新建处理线程 HandlerThread mHT = new HandlerThread("FileService",HandlerThread.NORM_PRIORITY); mHT.start(); mLooper = mHT.getLooper(); mFileHandler = new FileHandler(mLooper); } //服务开始 @Override public void onStart(Intent intent, int startId) { super.onStart(intent, startId); Log.d("FileService", "file service is onStart"); mFileName = new ArrayList<String>(); mFilePaths = new ArrayList<String>(); mFileHandler.sendEmptyMessage(0); //发出通知表明正在进行搜索 fileSearchNotification(); } @Override public void onDestroy() { super.onDestroy(); //取消通知 mNF.cancel(R.string.app_name); } class FileHandler extends Handler{ public FileHandler(Looper looper){ super(looper); } @Override public void handleMessage(Message msg) { super.handleMessage(msg); Log.d("FileService", "file service is handleMessage"); //在指定范围搜索 initFileArray(new File(SearchBroadCast.mServiceSearchPath)); //当用户点击了取消搜索则不发生广播 if(!MainActivity.isComeBackFromNotification == true){ Intent intent = new Intent(FILE_SEARCH_COMPLETED); intent.putStringArrayListExtra("mFileNameList", mFileName); intent.putStringArrayListExtra("mFilePathsList", mFilePaths); //搜索完毕之后携带数据并发送广播 sendBroadcast(intent); } } } private int m = -1; /**具体做搜索事件的可回调函数*/ private void initFileArray(File file){ Log.d("FileService", "currentArray is "+file.getPath()); //只能遍历可读的文件夹，否则会报错 if(file.canRead()){ File[] mFileArray = file.listFiles(); for(File currentArray:mFileArray){ if(currentArray.getName().indexOf(SearchBroadCast.mServiceKeyword) != -1){ if (m == -1) { m++; // 返回搜索之前目录 mFileName.add("BacktoSearchBefore"); mFilePaths.add(MainActivity.mCurrentFilePath); } mFileName.add(currentArray.getName()); mFilePaths.add(currentArray.getPath()); } //如果是文件夹则回调该方法 if(currentArray.exists()&¤tArray.isDirectory()){ //如果用户取消了搜索，应该停止搜索的过程 if(MainActivity.isComeBackFromNotification == true){ return; } initFileArray(currentArray); } } } } NotificationManager mNF; /**通知*/ private void fileSearchNotification(){ Notification mNotification = new Notification(R.drawable.logo,"后台搜索中...",System.currentTimeMillis()); Intent intent = new Intent(FILE_NOTIFICATION); //打开notice时的提示内容 intent.putExtra("notification", "当通知还存在，说明搜索未完成，可以在这里触发一个事件，当点击通知回到Activity之后，可以弹出一个框，提示是否取消搜索!"); PendingIntent mPI = PendingIntent.getBroadcast(this,0,intent,0); mNotification.setLatestEventInfo(this, "在"+SearchBroadCast.mServiceSearchPath+"下搜索", "搜索关键字为"+SearchBroadCast.mServiceKeyword+"【点击可取消搜索】", mPI); if(mNF == null){ mNF = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); } mNF.notify(R.string.app_name, mNotification); } }
FileService.JAVA 搜索服务
package com.supermario.filemanager;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;public class SearchBroadCast extends BroadcastReceiver { public static String mServiceKeyword = "";//接收搜索关键字的静态变量 public static String mServiceSearchPath = "";//接收搜索路径的静态变量 @Override public void onReceive(Context context, Intent intent) { //取得intent String mAction = intent.getAction(); if(MainActivity.KEYWORD_BROADCAST.equals(mAction)){ //取得intent传递过来的信息 mServiceKeyword = intent.getStringExtra("keyword"); mServiceSearchPath = intent.getStringExtra("searchpath"); } }}
SearchBroadCast.JAVA
文件管理器
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