标签：视频播放 focus cache layout csdn androi instance 做了 ring
先前做了一个小视频的功能，里面有播放多个视频的功能，为了效率，我加了视频缓存功能；
一方面耗费用户的流量，另一方面直接从本地播放要更流畅
网上看资料，一个视频缓存库，使用起来很方便，还不错，就分享给大家
//视频缓存 implementation ‘com.danikula:videocache:2.7.1‘
效果
代码：
public class MainActivity extends AppCompatActivity { private static final int MY_PERMISSIONS_WRITE_EXTERNAL_STORAGE = 1; String url = "http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"; VideoView videoView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); videoView = findViewById(R.id.videoView); //检查版本是否大于M if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_PERMISSIONS_WRITE_EXTERNAL_STORAGE); } else { Log.i("aaa", "权限已申请"); initVideo(); } } } private void initVideo() { HttpProxyCacheServer proxy = VideoApplication.getProxy(this); //1.我们会将原始url注册进去 // proxy.registerCacheListener(, bean.getVideo_url()); //2.我们播放视频的时候会调用以下代码生成proxyUrl String proxyUrl = proxy.getProxyUrl(url); if (proxy.isCached(url)) { Log.i("aaaa", "已缓存"); } else { Log.i("aaaa", "未缓存"); } Log.i("aaaapath", proxyUrl); videoView.setVideoPath(proxyUrl); videoView.start(); videoView.findFocus(); } @Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { if (requestCode == MY_PERMISSIONS_WRITE_EXTERNAL_STORAGE) { if (grantResults[0] == PackageManager.PERMISSION_GRANTED) { initVideo(); } else { //"权限已拒绝"; } } super.onRequestPermissionsResult(requestCode, permissions, grantResults); } }
日志：
这样可以在本地的磁盘里找到视频了
Application代码：
public class VideoApplication extends Application { @Override public void onCreate() { super.onCreate(); } private HttpProxyCacheServer proxy; public static HttpProxyCacheServer getProxy(Context context) { VideoApplication app = (VideoApplication) context.getApplicationContext(); return app.proxy == null ? (app.proxy = app.newProxy()) : app.proxy; } private HttpProxyCacheServer newProxy() { return new HttpProxyCacheServer.Builder(this) .maxCacheSize(1024 * 1024 * 1024) // 1 Gb for cache .fileNameGenerator(new MyFileNameGenerator()) .build(); } }
记住不要忘记了AndroidManifest权限
<uses-permission android:name="android.permission.INTERNET" /> <!--用于写入缓存数据到扩展存储卡--> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.VIBRATE" />
代码下载：
https://github.com/DickyQie/android-video/tree/video-cache
参考文档（库地址）
https://github.com/danikula/AndroidVideoCache
https://blog.csdn.net/zhqw_csdn/article/details/81514313
android -------- VideoCache 视频播放(缓存视频到本地)
标签：视频播放 focus cache layout csdn androi instance 做了 ring
原文地址：https://www.cnblogs.com/zhangqie/p/11730788.html
