一个 TV app 的直播节目实例，包含各央视频道及卫视频道

LivePlayback

项目地址：hejunlin2013/LivePlayback

简介：一个 TV app 的直播节目实例，包含各央视频道及卫视频道PS:注册过魅族帐号的同鞋，帮忙投下魅族开发者大赛·最佳人气奖投票：http://bbs.flyme.cn/forum.php?mod=viewthread&tid=1277760 ,求投票我的 8 号，8 号作品《SuperVideo》，这个项目到时也会有计划开源，谢谢啦！（投票在该页面评论区上方，是 8 号作品，要登录魅族帐号，不然无法投）传统电视直播节目,在 Android TV 上起着越来越重要的作用,央视,各地卫视,满足观众日益增长的多元化需求 看下效果图:































代码实现思路:1、通过 RecycleView 为对应的节目 item,遥控器按键,可触发跳到对应的直播节目
2、用对 IjkPlayer 进行二次封装,并能用于播放视频源。
3、视频源 m3u8,可能存在失效,目前获取了一个比较稳定的视频源
代码实现：主页面：Recycleview 对应 adapater
直播节目源
播放器
播放页处理
主页面：

/*
* Copyright (C) 2016 hejunlin <hejunlin2013@gmail.com>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class MainActivity extends Activity {

private MetroViewBorderImpl mMetroViewBorderImpl;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMetroViewBorderImpl = new MetroViewBorderImpl(this);
mMetroViewBorderImpl.setBackgroundResource(R.drawable.border_color);
loadRecyclerViewMenuItem();
}

private void loadRecyclerViewMenuItem() {
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.ry_menu_item);
GridLayoutManager layoutManager = new GridLayoutManager(this, 1);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setFocusable(false);
mMetroViewBorderImpl.attachTo(recyclerView);
createOptionItemData(recyclerView, R.layout.detail_menu_item);
}

private void createOptionItemData(RecyclerView recyclerView, int id) {
OptionItemAdapter adapter = new OptionItemAdapter(this, id);
recyclerView.setAdapter(adapter);
recyclerView.scrollToPosition(0);
}
}

播放页：

/*
* Copyright (C) 2016 hejunlin <hejunlin2013@gmail.com>
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class LiveActivity extends Activity {

private IjkVideoView mVideoView;
private RelativeLayout mVideoViewLayout;
private RelativeLayout mLoadingLayout;
private TextView mLoadingText;
private TextView mTextClock;
private String mVideoUrl = "";
private int mRetryTimes = 0;
private static final int CONNECTION_TIMES = 5;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_live);
mVideoUrl = getIntent().getStringExtra("url");
mVideoView = (IjkVideoView) findViewById(R.id.videoview);
mVideoViewLayout = (RelativeLayout) findViewById(R.id.fl_videoview);
mLoadingLayout = (RelativeLayout) findViewById(R.id.rl_loading);
mLoadingText = (TextView) findViewById(R.id.tv_load_msg);
mTextClock = (TextView)findViewById(R.id.tv_time);
mTextClock.setText(getDateFormate());
mLoadingText.setText("节目加载中...");
initVideo();
}

private String getDateFormate(){
Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String formattedDate = df.format(c.getTime());
return formattedDate;
}

public void initVideo() {
// init player
IjkMediaPlayer.loadLibrariesOnce(null);
IjkMediaPlayer.native_profileBegin("libijkplayer.so");
mVideoView.setVideoURI(Uri.parse(mVideoUrl));
mVideoView.setOnPreparedListener(new IMediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(IMediaPlayer mp) {
mVideoView.start();
}
});

mVideoView.setOnInfoListener(new IMediaPlayer.OnInfoListener() {
@Override
public boolean onInfo(IMediaPlayer mp, int what, int extra) {
switch (what) {
case IjkMediaPlayer.MEDIA_INFO_BUFFERING_START:
mLoadingLayout.setVisibility(View.VISIBLE);
break;
case IjkMediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START:
case IjkMediaPlayer.MEDIA_INFO_BUFFERING_END:
mLoadingLayout.setVisibility(View.GONE);
break;
}
return false;
}
});

mVideoView.setOnCompletionListener(new IMediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(IMediaPlayer mp) {
mLoadingLayout.setVisibility(View.VISIBLE);
mVideoView.stopPlayback();
mVideoView.release(true);
mVideoView.setVideoURI(Uri.parse(mVideoUrl));
}
});

mVideoView.setOnErrorListener(new IMediaPlayer.OnErrorListener() {
@Override
public boolean onError(IMediaPlayer mp, int what, int extra) {
if (mRetryTimes > CONNECTION_TIMES) {
new AlertDialog.Builder(LiveActivity.this)
.setMessage("节目暂时不能播放")
.setPositiveButton(R.string.VideoView_error_button,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
LiveActivity.this.finish();
}
})
.setCancelable(false)
.show();
} else {
mVideoView.stopPlayback();
mVideoView.release(true);
mVideoView.setVideoURI(Uri.parse(mVideoUrl));
}
return false;
}
});

}

@Override
protected void onResume() {
super.onResume();
}

@Override
protected void onPause() {
super.onPause();
}

@Override
protected void onStop() {
super.onStop();
if (!mVideoView.isBackgroundPlayEnabled()) {
mVideoView.stopPlayback();
mVideoView.release(true);
mVideoView.stopBackgroundPlay();
}
IjkMediaPlayer.native_profileEnd();
}

public static void activityStart(Context context, String url) {
Intent intent = new Intent(context, LiveActivity.class);
intent.putExtra("url", url);
context.startActivity(intent);
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}

}

播放器是用二次封装的 ijkplayer，从主页面传 url 到播放页面，关才 mediaplayer 相关，之前专门写了专题分析，mediaplayer 的状态可参考《Android Multimedia 框架总结（一）MediaPlayer 介绍之状态图及生命周期》 第三方播放器典型特点就是另起一个 mediaplayerservice，注意这是另外一个进程，为什么是另一个进程，可参见我的文章：MediaPlayer 的 C/S 模型。对于 ijkplayer 这个框架，因为做实例，才引入，不做评价，也不会去深究，满足基本播放需求就 ok。市场上有很多第三方播放框架，ijkplayer,vitamio,百度云播放等。再看下播放页的播放 panel:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#22000000"
android:orientation="vertical">

<RelativeLayout
android:id="@+id/fl_videoview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorBlack">

<com.hejunlin.liveplayback.ijkplayer.media.IjkVideoView
android:id="@+id/videoview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:background="@color/colorBlack">
</com.hejunlin.liveplayback.ijkplayer.media.IjkVideoView>

<RelativeLayout
android:id="@+id/rl_loading"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#de262a3b">

<TextView
android:id="@+id/tv_load_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/pb_loading"
android:layout_centerInParent="true"
android:layout_marginTop="6dp"
android:textColor="#ffffff"
android:textSize="16sp" />

<ProgressBar
android:id="@+id/pb_loading"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_centerInParent="true"
android:layout_marginTop="60dp"
android:indeterminate="false"                  android:indeterminateDrawable="@drawable/video_loading"
android:padding="5dp" />
</RelativeLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/player_panel_background_color">

<TextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:textSize="24dp"
android:text="Android TV 开发总结（六）构建一个 TV app 的直播节目实例"
android:layout_centerVertical="true"
android:layout_marginTop="18dp"
android:textColor="@color/white"/>

<TextView
android:id="@+id/tv_time"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:textSize="20dp"
android:layout_toRightOf="@id/tv_title"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginLeft="60dp"
android:layout_marginTop="20dp"
android:textColor="@color/white"/>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>

这里有几个点要注意 ：为演示，并未对层级进行使用 FrameLayout,及 viewstub,include 等性能优化相关的，在实际商用项目中，建议写 xml 文件，尽可能遵循过少的层级，高级标签及 FrameLayout 等技巧。
所有的 size 切勿直接写死，用 android:layout_marginTop="@dimen/dimen_20dp"表示，string 值统一写到 string.xml 中，这些基本的规范，会让你提高不少效率。