android文件管理器的开发（一）

转载 于 2013-01-09 00:13:00 发布 · 605 阅读 · 2 ·
CC 4.0 BY-SA版权
原文链接：http://www.cnblogs.com/singleboy/archive/2013/01/09/2852168.html
文章标签：

#移动开发 #java #数据库

本文将介绍如何开发一款既便于数据统计与文件管理，又具备独特无线管理和网盘模式的Android文件管理器。通过提供外部接口方法，如getImage()、getAudio()和getVideo()，实现工具类的设计，并基于MediaStore接口获取图片、音频和视频信息。

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概要：

      由于手机自带的文件管功能太弱，而第三方的文件管理软件又非常的混乱，朋友们是否为此而头疼呢？

需求：

      开发文件管理器，它不仅在数据统计和文件管理方面都表现的非常方便，还拥有独特的无线管理和网盘模式。

设计：

     分类索引、目录索引、无线管理、电脑互传、网盘管理

 

开发：

    工具类的设计：Image、Audio、Viedo 提供外部接口方法  getList（）；

 

直接上代码：大家可以在此基础上写成工具包（模块式开发）

 

View Code 
public class Image {
private int id;
private String title;
private String displayName;
private String mimeType;
private String path;
private long size;

public Image() {
super();
}

/**
* @param id
* @param title
* @param displayName
* @param mimeType
* @param path
* @param size
*/
public Image(int id, String title, String displayName, String mimeType,
String path, long size) {
super();
this.id = id;
this.title = title;
this.displayName = displayName;
this.mimeType = mimeType;
this.path = path;
this.size = size;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public String getDisplayName() {
return displayName;
}

public void setDisplayName(String displayName) {
this.displayName = displayName;
}

public String getMimeType() {
return mimeType;
}

public void setMimeType(String mimeType) {
this.mimeType = mimeType;
}

public String getPath() {
return path;
}

public void setPath(String path) {
this.path = path;
}

public long getSize() {
return size;
}

public void setSize(long size) {
this.size = size;
}

 

View Code 
package single.find;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.provider.MediaStore;

public class ImageProvider{
private Context context;

public ImageProvider(Context context) {
this.context = context;
}

public  List<Image> getList() {
List<Image> list = null;
if (context != null) {
Cursor cursor = context.getContentResolver().query(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null,
null, null);
if (cursor != null) {
list = new ArrayList<Image>();
while (cursor.moveToNext()) {
int id = cursor
.getInt(cursor
.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
String title = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.TITLE));
String path = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA));
String displayName = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DISPLAY_NAME));
String mimeType = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.MIME_TYPE));
long size = cursor
.getLong(cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.SIZE));
Image audio = new Image(id, title, displayName, mimeType,
path, size);
list.add(audio);
}
cursor.close();
}
}
return list;
}

}
View Code 
package single.find;

public class Audio {

private int id;
private String title;
private String album;
private String artist;
private String path;
private String displayName;
private String mimeType;
private long duration;
private long size;

/**
* 
*/
public Audio() {
super();
}

/**
* @param id
* @param title
* @param album
* @param artist
* @param path
* @param displayName
* @param mimeType
* @param duration
* @param size
*/
public Audio(int id, String title, String album, String artist,
String path, String displayName, String mimeType, long duration,
long size) {
super();
this.id = id;
this.title = title;
this.album = album;
this.artist = artist;
this.path = path;
this.displayName = displayName;
this.mimeType = mimeType;
this.duration = duration;
this.size = size;
}



public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public String getAlbum() {
return album;
}

public void setAlbum(String album) {
this.album = album;
}

public String getArtist() {
return artist;
}

public void setArtist(String artist) {
this.artist = artist;
}

public String getPath() {
return path;
}

public void setPath(String path) {
this.path = path;
}

public String getDisplayName() {
return displayName;
}

public void setDisplayName(String displayName) {
this.displayName = displayName;
}

public String getMimeType() {
return mimeType;
}

public void setMimeType(String mimeType) {
this.mimeType = mimeType;
}

public long getDuration() {
return duration;
}

public void setDuration(long duration) {
this.duration = duration;
}

public long getSize() {
return size;
}

public void setSize(long size) {
this.size = size;
}

}
View Code 
package single.find;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.provider.MediaStore;

public class AudioProvider{

private Context context;

public AudioProvider(Context context) {
this.context = context;
}

public List<Audio> getList() {
List<Audio> list = null;
if (context != null) {
Cursor cursor = context.getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, null,
null, null);
if (cursor != null) {
list = new ArrayList<Audio>();
while (cursor.moveToNext()) {
int id = cursor.getInt(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media._ID));
String title = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE));
String album = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM));
String artist = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST));
String path = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA));
String displayName = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME));
String mimeType = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.MIME_TYPE));
long duration = cursor
.getInt(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION));
long size = cursor
.getLong(cursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.SIZE));
Audio audio = new Audio(id, title, album, artist, path,
displayName, mimeType, duration, size);
list.add(audio);
}
cursor.close();
}
}
return list;
}

}
View Code 
package single.find;

public class Video {
private int id;
private String title;
private String album;
private String artist;
private String displayName;
private String mimeType;
private String path;
private long size;
private long duration;

/**
* 
*/
public Video() {
super();
}

/**
* @param id
* @param title
* @param album
* @param artist
* @param displayName
* @param mimeType
* @param data
* @param size
* @param duration
*/
public Video(int id, String title, String album, String artist,
String displayName, String mimeType, String path, long size,
long duration) {
super();
this.id = id;
this.title = title;
this.album = album;
this.artist = artist;
this.displayName = displayName;
this.mimeType = mimeType;
this.path = path;
this.size = size;
this.duration = duration;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public String getAlbum() {
return album;
}

public void setAlbum(String album) {
this.album = album;
}

public String getArtist() {
return artist;
}

public void setArtist(String artist) {
this.artist = artist;
}

public String getDisplayName() {
return displayName;
}

public void setDisplayName(String displayName) {
this.displayName = displayName;
}

public String getMimeType() {
return mimeType;
}

public void setMimeType(String mimeType) {
this.mimeType = mimeType;
}

public String getPath() {
return path;
}

public void setPath(String path) {
this.path = path;
}

public long getSize() {
return size;
}

public void setSize(long size) {
this.size = size;
}

public long getDuration() {
return duration;
}

public void setDuration(long duration) {
this.duration = duration;
}

}
View Code 
package single.find;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.provider.MediaStore;

public class VideoProvider{
private Context context;

public VideoProvider(Context context) {
this.context = context;
}

public List<Video> getList() {
List<Video> list = null;
if (context != null) {
Cursor cursor = context.getContentResolver().query(
MediaStore.Video.Media.EXTERNAL_CONTENT_URI, null, null,
null, null);
if (cursor != null) {
list = new ArrayList<Video>();
while (cursor.moveToNext()) {
int id = cursor.getInt(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media._ID));
String title = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.TITLE));
String album = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.ALBUM));
String artist = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.ARTIST));
String displayName = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME));
String mimeType = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.MIME_TYPE));
String path = cursor
.getString(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.DATA));
long duration = cursor
.getInt(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION));
long size = cursor
.getLong(cursor
.getColumnIndexOrThrow(MediaStore.Video.Media.SIZE));
Video video = new Video(id, title, album, artist, displayName, mimeType, path, size, duration);
list.add(video);
}
cursor.close();
}
}
return list;
}

}


继续关注：   android文件管理器的开发（二）

 

 

 

转载于:https://www.cnblogs.com/singleboy/archive/2013/01/09/2852168.html

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