Android本地視頻播放器開發

這一章的主要內容是搜索手機本地視頻，添加到ListView列表裡，每一個表項含有這個視頻的縮略圖，視頻的播放時間，視頻的標題，在搜索本地視頻（1）中我們先制作搜索功能。

Video.java--視頻相關的屬性類

package com.zhangjie.graduation.videopalyer.videofile;

import java.io.Serializable;

import com.zhangjie.graduation.videopalyer.component.LoadedImage;

public class Video implements Serializable{
/**
*
*/
private static final long serialVersionUID = -7920222595800367956L;
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;
private LoadedImage image;

/**
*
*/
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;
}

public LoadedImage getImage(){
return image;
<pre class="java" name="code">
}

public void setImage(LoadedImage image){
this.image = image;
}

}

AbstructProvider.java ---一個接口，來獲取搜索的視頻的一個集合
package com.zhangjie.graduation.videopalyer.videofile;

import java.util.List;

public interface AbstructProvider {

public List<Video> getList();

}

VideoProvider.java--- 實現AbstructProvider接口，通過cursor來搜索視頻的相關信息
package com.zhangjie.graduation.videopalyer.videofile;

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

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

public class VideoProvider implements AbstructProvider {
private Context context;

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

@Override
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;
}

}

最後在主類中使用如下代碼來獲取最終得到的視頻相關信息集合

AbstructProvider provider = new VideoProvider(this);
List<Video> listVideos = provider.getList();

在上面的listVideos包含了本地所有的視頻的相關信息，下一章將會用到listVideos數據。