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   源码介绍

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package com.szh.localfilemanager;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

/**
 * 
 * 
 * 
 * @author Administrator
 * 
 */
@SuppressLint("HandlerLeak")
public class LocalFileActivity extends Activity implements OnItemClickListener,View.OnClickListener {
	private boolean misShowHiddenFiles = false;
	private ListView mListView;
	private List<File> mfiles = new ArrayList<File>();
	private String mSDCardPath;
	public static List<File> checkFileList = new ArrayList<File>();
	private RelativeLayout empty_filse;
	private File mCurrentPathFile = null;
	private List<File> mbackwardfiles = new ArrayList<File>();
	private static LocalFileAdapter madapter;
	private TextView file_path;
	private ImageView close_file_path_back;
	private Button checkall_more;

	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		bindView();
		initData();
	}

	public void bindView() {
		setContentView(R.layout.cloud_space_activity);
		checkEnvironment();
		file_path = (TextView) findViewById(R.id.file_path); 
		close_file_path_back = (ImageView) findViewById(R.id.cha_file_path_back);
		checkall_more = (Button) findViewById(R.id.checkall_more);
		empty_filse = (RelativeLayout) findViewById(R.id.empty_filse);
		mListView = (ListView) findViewById(R.id.list_file_father);
		madapter = new LocalFileAdapter(this, mfiles);
		mListView.setEmptyView(empty_filse);
		mListView.setAdapter(madapter);
		checkall_more.setOnClickListener(this);
		mListView.setOnItemClickListener(this);
		close_file_path_back.setOnClickListener(this);

	}

	private void checkEnvironment() {
		File f = null;
		boolean sdCardExist = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED); 
		if (sdCardExist) {
			f = Environment.getExternalStorageDirectory();
			if (f != null) {
				mSDCardPath = f.getAbsolutePath();

			}

		} else {
			f = Environment.getRootDirectory();
			if (f != null) {
				mSDCardPath = f.getAbsolutePath();
			}
		}
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.cha_file_path_back:
			upward();
			break;

		}
	}

	private void open(File f, boolean misAddToBackWardFiles) {
		if (f.isDirectory()) {
			deleteAllItems();

			mCurrentPathFile = f;
			file_path.setText(mCurrentPathFile.getAbsolutePath());

			if (misAddToBackWardFiles) {
				mbackwardfiles.add(mCurrentPathFile.getParentFile());
			}

			File[] files = f.listFiles();

			Arrays.sort(files, new FileComparator());//排序

			for (File file : files) {
				if (!misShowHiddenFiles && file.isHidden()) {
					continue;
				}
				addItem(file);
			}
		}
	}

	private void deleteAllItems() {
		mfiles.clear();
		checkFileList.clear();
		madapter.notifyDataSetChanged();
	}

	private void addItem(File f) {

		mfiles.add(f);
		madapter.notifyDataSetChanged();
	}

	public void upward() {
		checkFileList.clear();
		if (mbackwardfiles.size() > 0) {
			File backpathFile = mbackwardfiles.get(mbackwardfiles.size() - 1);

			open(backpathFile, false);
			mbackwardfiles.remove(mbackwardfiles.size() - 1);
			if (backpathFile.getAbsolutePath().equals(mSDCardPath)) {
				close_file_path_back.setVisibility(View.VISIBLE);
			}

		} else if (mbackwardfiles.size() <= 0) {
			this.finish();
		}

	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {

		switch (keyCode) {
		case KeyEvent.KEYCODE_BACK:
			try {
				upward();
			} catch (Exception e) {
				this.finish();
			}

			return true;

		}
		return false;

	}

	@Override
	public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) {
		File mselectedFile = (File) madapter.getItem(position);

		if (mselectedFile != null) {

			if (madapter.isChecked()) {
				Toast.makeText(LocalFileActivity.this, mselectedFile.getName(), Toast.LENGTH_SHORT).show();
			}
			open(mselectedFile, true);
			madapter.notifyDataSetChanged();

		}
	}

	public void initData() {

		File file = new File(mSDCardPath);

		if (file != null) {
			open(file, false);
		}
	}

	public void backward() {

		if (mbackwardfiles.size() > 0) {
			File backpathFile = mbackwardfiles.get(mbackwardfiles.size() - 1);
			open(backpathFile, false);
			mbackwardfiles.remove(mbackwardfiles.size() - 1);
			if (backpathFile.getAbsolutePath().equals(mSDCardPath)) {
				close_file_path_back.setVisibility(View.VISIBLE);
			}
		}
	}

	public static void setCheckFileList(File checkFile) {
		checkFileList.add(checkFile);
		System.out.println("name="   checkFile.getName()   "闀垮害鏄?"   checkFileList.size());
	}

	public static void remove(File file) {
		checkFileList.remove(file);
		System.out.println("name="   file.getName()   "闀垮害鏄?"   checkFileList.size());
	}

}