Android(安卓)可選文件格式瀏覽器

package training.filesystem;import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.util.ArrayList;import java.util.HashMap;import java.util.Map;import android.R.integer;import android.R.layout;import android.app.AlertDialog;import android.app.ListActivity;import android.content.DialogInterface;import android.os.Bundle;import android.view.Display;import android.view.Gravity;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.view.WindowManager;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.ArrayAdapter;import android.widget.LinearLayout.LayoutParams;import android.widget.Button;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.Spinner;import android.widget.TextView;import android.widget.Toast;public class FilesystemActivity extends ListActivity implements OnClickListener, OnItemSelectedListener {private TextView hint;private ListView list;private TextView filename;private Spinner filetype;private Button oKButton,cancelButton;private String root = "/";private String root_sdcard = "/mnt/sdcard";private ArrayList<String> path;private ArrayList<Map<String, Object>> item;private ArrayList<Version> aboutVersionList = new ArrayList<Version>();private String pathString;private String PATH_FILE_NAME;private AlertDialog warnAlertDialog;private AlertDialog errorAlertDialog;/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.main);hint = (TextView) findViewById(R.id.path);filename =(TextView)findViewById(R.id.name);oKButton = (Button)findViewById(R.id.ok);cancelButton = (Button)findViewById(R.id.cancel);filetype = (Spinner)findViewById(R.id.spinner);filetype.setOnItemSelectedListener(this);list = this.getListView();oKButton.setOnClickListener(this);cancelButton.setOnClickListener(this);getfiledir(root_sdcard,0);WindowManager manager = getWindowManager();Display display = manager.getDefaultDisplay();android.view.WindowManager.LayoutParams params = getWindow().getAttributes();params.height = (int)(display.getHeight() * 0.5);params.width = (int)(display.getWidth() * 0.5);params.dimAmount = 0.0f;getWindow().setAttributes(params);getWindow().setGravity(Gravity.CENTER);}protected void getfiledir(String filepath,int type) {final int abcd = type;item = new ArrayList<Map<String, Object>>();path = new ArrayList<String>();hint.setText(filepath);pathString = filepath;File f = new File(filepath);File[] files = f.listFiles();if (!filepath.equals(root)) {Map<String, Object> map = new HashMap<String, Object>();map.put("icon", R.drawable.up_folder);map.put("name", "back to /");item.add(map);path.add("/mnt/sdcard/");Map<String, Object> map2 = new HashMap<String, Object>();map2.put("icon", R.drawable.up_folder);map2.put("name", "back to ../");item.add(map2);path.add(f.getParent());}if (files != null) {for (int i = 0; i < files.length; i++) {if(type == 0){Map<String, Object> map = new HashMap<String, Object>();if (files[i].isDirectory()) {map.put("icon", R.drawable.folder);}else {map.put("icon", R.drawable.file);}map.put("name", files[i].getName());item.add(map);path.add(files[i].getPath());}else if (type == 1) {if (files[i].isDirectory()) {Map<String , Object> map = new HashMap<String, Object>();map.put("icon", R.drawable.folder);map.put("name", files[i].getName());item.add(map);path.add(files[i].getPath());}}else if (type == 2) {if (files[i].isFile()) {Map<String, Object> map = new HashMap<String, Object>();map.put("icon", R.drawable.file);map.put("name", files[i].getName());item.add(map);path.add(files[i].getPath());}}}}SimpleAdapter simpleAdapter = new SimpleAdapter(FilesystemActivity.this, item, R.layout.line, new String[]{"icon","name"}, new int[]{R.id.icon,R.id.name});list.setAdapter(simpleAdapter);list.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {// TODO Auto-generated method stubFile file = new File(path.get(arg2));if (file.isDirectory()) {getfiledir(path.get(arg2),abcd);} else {Toast.makeText(FilesystemActivity.this, "这是一个文件!",Toast.LENGTH_SHORT).show();filename.setText(file.getName());PATH_FILE_NAME = file.getName();}}});}public boolean GetVersionInfo(){String tempString = null;boolean isHaveVersion = false;try {File file = new File(pathString + "/" + PATH_FILE_NAME);FileReader fileReader = new FileReader(file);BufferedReader bufferedReader = new BufferedReader(fileReader);while ((tempString = bufferedReader.readLine()) != null) {if (tempString.startsWith("[")) {if (tempString.substring(tempString.indexOf("[")+1,tempString.indexOf("]")).equals("Version")) {tempString = bufferedReader.readLine();Version version = new Version();String[] splitString = tempString.split(",");if (splitString.length != 3) {break;}version.VERSION_ID = splitString[0];version.VERSION_DEVICE = splitString[1];version.VERSION_PLATFORM = splitString[2];aboutVersionList.add(version);isHaveVersion = true;break;}}}} catch (Exception e) {// TODO: handle exceptione.printStackTrace();return false;}if (isHaveVersion) {return true;}else {return false;}}public class Version{String VERSION_ID;String VERSION_PLATFORM;String VERSION_DEVICE;}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif (v == oKButton) {if(GetVersionInfo()){Version version = aboutVersionList.get(0);warnAlertDialog = new AlertDialog.Builder(this).setIcon(R.drawable.warning).setTitle(getText(R.string.dialog_title)).setMessage(getText(R.string.dialog_content_id) + version.VERSION_ID +"\n" +getText(R.string.dialog_content_platform) + version.VERSION_PLATFORM + "\n" +getText(R.string.dialog_content_device) + version.VERSION_DEVICE + "\n" +getText(R.string.dialog_content)).setPositiveButton(getText(R.string.dialog_ok), new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}}).setNegativeButton(getText(R.string.dialog_cancel), new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}}).show();}else {errorAlertDialog = new AlertDialog.Builder(this).setIcon(R.drawable.warning).setTitle(getText(R.string.dialog_title)).setMessage(getText(R.string.dialog_error)).setPositiveButton(getText(R.string.dialog_ok), new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}}).show();}}}@Overridepublic void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {// TODO Auto-generated method stubString aString = filetype.getSelectedItem().toString();if (aString.equals("所有档案")) {getfiledir(pathString,0);}else if (aString.equals("文件夹")) {getfiledir(pathString, 1);}else if (aString.equals("文件")) {getfiledir(pathString, 2);}}@Overridepublic void onNothingSelected(AdapterView<?> arg0) {// TODO Auto-generated method stub}}
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