Android TV直播電視節目，包含各央視頻道及衛視頻道

傳統電視直播節目，在Android TV上起着越來越重要的作用，央視，各地衛視，滿足觀衆日益增長的多元化需求看下效果圖：代碼實現思路：如圖1所示，通過RecycleView爲對應的節目項，遙控器按鍵，可觸發跳到對應的直播節目2，用對IjkPlayer進行二次封裝，並能用於播放視頻源。3，視頻源M3U8，可能存在失效，目前獲取了一個比較穩定的視頻源代碼實現：主頁面：Recycleview對應adapater直播節目源播放器播放頁處理主頁面：/* * Copyright (C) 2016 hejunlin <[email][email protected][> * 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 * *      [url]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);    }}播放頁：/* * Copyright (C) 2016 hejunlin <[email][email protected][> * 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 * *      [url]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("節目加載中...");        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("節目暫時不能播放")                            .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);    }}播放器是用二次封裝的ijkplayer，從主頁面傳url到播放頁面，關才mediaplayer相關，之前專門寫了專題分析，mediaplayer的狀態可參考“Android多媒體框架總結（一）MediaPlayer介紹之狀態圖及生命週期“ 第三方播放器典型特點就是另起一個mediaplayerservice，注意這是另外一個進程，爲什麼是另一個進程，可參見我的文章：MediaPlayer的的C / S模型對於ijkplayer這個框架，因爲做實例，才引入，不做評價，也不會去深究，滿足基本播放需求就ok了。市場上有很多第三方播放框架，ijkplayer，vitamio，百度雲播放等。再看下播放頁的播放面板：

這裏有幾個點要注意：爲演示，並未對層級進行使用的FrameLayout，及viewstub，包括等性能優化相關的，在實際商用項目中，建議寫的XML文件，儘可能遵循過少的層級，高級標籤及的FrameLayout等技巧。所有的大小切勿直接寫死，用android：layout_marginTop =“@ dimen / dimen_20dp”表示，string值統一寫到string.xml中，這些基本的規範，會讓你提高不少效率。