Android流媒体开发之-直播自定义列表

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1、Android流媒体开发之-直播实现

2、Android流媒体开发之-直播自定义列表

3、Android流媒体开发之-服务器图片的加载

4、Android流媒体开发之-直播自定义分类

5、Android流媒体开发之-获取直播节目预告-1

6、Android流媒体开发之-直播界面切换电视台频道

网上大多数直播软件都会提供一个功能就是自定义，这个由于版本问题，而为了让用户看到自己想看的频道，可以让用户自己添加找到的源，然后进行播放，俗话说法不责众，这个功能是如何实现的呢，其实也是很简单的，无法就是记录下用户添加的数据，然后保存下来，这里主要用到了数据库，用户点击自己添加的源，程序会从数据库取出链接，例如http，rtsp等开头的流媒体链接，具体的实现如下，我们是在之前流媒体开发之--直播实现的基础上继续完善。

首先就是设计一个布局，里面使用ListView来填充，custom.xml，内容如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/custom_title"
android:layout_width="match_parent"
android:layout_height="30dp"
android:text="直播"
android:textSize="27sp"
android:gravity="center"
/>
<ListView
android:id="@+id/custom_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
></ListView>
</LinearLayout>

我们同时还需要一个ListView的一个Item和一个foot用来显示添加的源和实现添加功能，内容如下：

custom_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="@+id/custom_list_item_name"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:singleLine="true"
android:text="频道"
/>
<TextView
android:id="@+id/custom_list_item_url"
android:layout_width="match_parent"
android:layout_height="30dp"
android:text="视频源链接"
/>
</LinearLayout>

custom_list_foot.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="30dp"
android:text="点击此处添加视频源"
android:textSize="25sp"
/>
</LinearLayout>

我上面只是使用TextView来显示，如果需要美化，可以添加ImageView来实现图文并茂，布局写完后，我们就要添加一个数据库用来记录添加的视频源，为了方便起见，我们还需要定义一个自定义视频内容格式的类，内容如下：

CustomVideo.Java

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package com.jwzhangjie.live.type;
import java.io.Serializable;
public class CustomVideo implements Serializable{
private static final long serialVersionUID = 2166585200370610099L;
private String name;
private String url;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}

DBHelper.java

[java] view plain copy print?

package com.jwzhangjie.live.db;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
public class DBHelper extends SQLiteOpenHelper{
public static final String DB_NAME = "custom.sqlite";
public static final String TABLE_NAME_VIDEO = "custom";
public static final String CAMERA_SQL = "CREATE TABLE video ('_id' INTEGER PRIMARY KEY AUTOINCREMENT, 'name' VARCHAR, 'url' VARCHAR)";
public static int DB_VERSION = 1;
public DBHelper(Context context, String name, CursorFactory factory,
int version) {
super(context, DB_NAME, null, DB_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(CAMERA_SQL);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}

当然有这个还不行，我们还需要创建一个实现数据库各种操作的类，定义如下：

package com.jwzhangjie.live.utils;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import com.jwzhangjie.live.db.DBHelper;
import com.jwzhangjie.live.type.CustomVideo;
public class DBUtils {
private static DBHelper mDbHelper;
public DBUtils(Context context){
mDbHelper = new DBHelper(context);
}
/**
* insert custom video
*/
public void insertCustomVideo(CustomVideo customVideo){
SQLiteDatabase dbDatabase = null;
try {
dbDatabase = mDbHelper.getWritableDatabase();
if (dbDatabase == null) {
return;
}
ContentValues contentValues = new ContentValues();
contentValues.put("name", customVideo.getName());
contentValues.put("url", customVideo.getUrl());
dbDatabase.insertOrThrow("custom", null, contentValues);
} catch (Exception e) {
}finally{
dbDatabase.close();
}
}
public void deleteOneCustomVideo(String name){
SQLiteDatabase dbDatabase = mDbHelper.getWritableDatabase();
try {
String sql = "DELETE FROM custom WHERE name = "+name;
dbDatabase.execSQL(sql);
} catch (Exception e) {
}finally{
dbDatabase.close();
}
}
public List<CustomVideo> getAllCameras(){
List<CustomVideo> list = new ArrayList<CustomVideo>();
SQLiteDatabase dbDatabase = mDbHelper.getWritableDatabase();
String sql = "SELECT * FROM custom";
Cursor cursor = dbDatabase.rawQuery(sql, null);
while (!cursor.isLast()) {
cursor.moveToNext();
CustomVideo video = new CustomVideo();
video.setId(cursor.getInt(0));
video.setName(cursor.getString(1));
video.setUrl(cursor.getString(2));
list.add(video);
}
dbDatabase.close();
return list;
}
public int getAllCustomVideoCount(){
SQLiteDatabase db = mDbHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select count(*) from custom", null);
cursor.moveToNext();
int count = cursor.getInt(0);
cursor.close();
db.close();
return count;
}
}

做完上述事情后，我们就要设计显示界面操作，首先就是适配器的设计：

package com.jwzhangjie.live.utils;import java.util.ArrayList;
import java.util.List;import <a href="http://lib.csdn.net/base/android" class="replace_word" title="Android知识库" target="_blank" style="color:#df3434; font-weight:bold;">Android</a>.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;import com.jwzhangjie.live.db.DBHelper;
import com.jwzhangjie.live.type.CustomVideo;public class DBUtils { public static DBHelper mDbHelper;
public DBUtils(Context context){
mDbHelper = new DBHelper(context);
}
/**
* insert custom video
*/
public void insertCustomVideo(CustomVideo customVideo){
SQLiteDatabase dbDatabase = null;
try {
dbDatabase = mDbHelper.getWritableDatabase();
if (dbDatabase == null) {
return;
}
ContentValues contentValues = new ContentValues();
contentValues.put("name", customVideo.getName());
contentValues.put("url", customVideo.getUrl());
dbDatabase.insertOrThrow("custom", null, contentValues);
} catch (Exception e) {
}finally{
dbDatabase.close();
}
}
public void deleteOneCustomVideo(String url){
SQLiteDatabase dbDatabase = mDbHelper.getWritableDatabase();
try {
String sql = "DELETE FROM custom WHERE url = "+url;
dbDatabase.execSQL(sql);
} catch (Exception e) {
}finally{
dbDatabase.close();
}
}
public List<CustomVideo> getAllCameras(){
List<CustomVideo> list = new ArrayList<CustomVideo>();
SQLiteDatabase dbDatabase = mDbHelper.getWritableDatabase();
String sql = "SELECT * FROM custom";
Cursor cursor = dbDatabase.rawQuery(sql, null);
while (!cursor.isLast()) {
cursor.moveToNext();
CustomVideo video = new CustomVideo();
video.setId(cursor.getInt(0));
video.setName(cursor.getString(1));
video.setUrl(cursor.getString(2));
list.add(video);
}
dbDatabase.close();
return list;
}
public int getAllCustomVideoCount(){
SQLiteDatabase db = mDbHelper.getReadableDatabase();
Cursor cursor = db.rawQuery("select count(*) from custom", null);
cursor.moveToNext();
int count = cursor.getInt(0);
cursor.close();
db.close();
return count;
}
}

适配器设置完毕后，我们剩下显示界面了

package com.jwzhangjie.live;
import java.util.ArrayList;
import java.util.List;
import com.jwzhangjie.live.adapter.CustomVideoAdapter;
import com.jwzhangjie.live.type.CustomVideo;
import com.jwzhangjie.live.utils.DBUtils;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
public class CustomVideoList extends Activity implements OnItemClickListener, OnClickListener{
public ListView customVideoListView;
public CustomVideoAdapter listAdapter;
private List<CustomVideo> listVideos;
public Button addBtn;
public EditText addUrl;
DBUtils dbUtils = new DBUtils(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.custom);
addBtn = (Button)findViewById(R.id.add);
addUrl = (EditText)findViewById(R.id.addurl);
customVideoListView = (ListView)findViewById(R.id.custom_list);
listAdapter = new CustomVideoAdapter(this);
customVideoListView.setAdapter(listAdapter);
customVideoListView.setOnItemClickListener(this);
addBtn.setOnClickListener(this);
addUrl.setText("http://74.82.62.53:1935/liverepeater/10.stream/playlist.m3u8");
int size = dbUtils.getAllCustomVideoCount();
if (size != 0) {
listVideos = dbUtils.getAllCameras();
listAdapter.setCustomVideoList(listVideos);
}else {
listVideos = new ArrayList<CustomVideo>();
}
}
@Override
protected void onResume() {
super.onResume();
}
@Override
public void onClick(View v) {
if (v == addBtn) {
if (addUrl.getText() != null) {
CustomVideo customVideo = new CustomVideo();
customVideo.setName("视频");
customVideo.setUrl(addUrl.getText().toString());
dbUtils.insertCustomVideo(customVideo);
listAdapter.insertCustomVideo(customVideo);
listVideos.add(customVideo);
}
}
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Intent intent = new Intent();
intent.setClass(CustomVideoList.this, JieVideoPlayer.class);
intent.putExtra("path", listVideos.get(position).getUrl());
startActivity(intent);
}
}

效果如下：

点击你选择的视频也能够播放视频，自定义功能就这些。

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