信息发布系统中需要支持海康视频监控预览功能，下面将列出功能实现相关流程

文末附带demo

准备工作（省略步骤，module文件和so文件见demo）

1.引用module

//组件依赖
implementation project(path: ':hatom-video-player')

2.创建jnilib，复制粘贴so库文件

 3.build.gradle文件

defaultConfig {
...
	 ndk{
            abiFilters 'arm64-v8a','armeabi-v7a'
        }
...
}

正式开始：

1.manifest文件，申请权限，开启硬件加速（SurfaceView需要）

<uses-permission android:name="android.permission.INTERNET" />
<!-- 存储   -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

<application
        android:name=".MyApp"
        android:allowBackup="true"
        android:hardwareAccelerated="true"

...

</application>

2.自定义Application，初始化sdk

public class BaseApp extends Application {
    private static Context context;

    @Override
    public void onCreate() {
        super.onCreate();
        context = getApplicationContext();
        HatomPlayerSDK.init(this, "", isAppDebug());
    }

    public static Context getContext() {
        return context;
    }

    public static boolean isAppDebug() {
        if ("".equals(context.getPackageName())) return false;
        try {
            PackageManager pm = context.getPackageManager();
            ApplicationInfo ai = pm.getApplicationInfo(context.getPackageName(), 0);
            return ai != null && (ai.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
            return false;
        }
    }
}

3.MainActivity中调用

//监控视频短链接地址
public static final String playUrl = "rtsp://61.53.68.15:554/openUrl/NCfAEgM";
//创建HatomPlayer实例
    HatomPlayer hatomPlayer = new DefaultHatomPlayer();

//onCreate中增加回调
binding.texture.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
            @Override
            public void onSurfaceTextureAvailable(@NonNull SurfaceTexture surface, int width, int height) {
                //设置播放画面显示surface,支持TextureView和SurfaceView
                hatomPlayer.setSurfaceTexture(binding.texture.getSurfaceTexture());
                //播放前设置播放配置(可选)
                PlayConfig playConfig = new PlayConfig();
                //使用硬解码
                playConfig.hardDecode = false;
                //开启智能信息
                playConfig.privateData = false;
                hatomPlayer.setPlayConfig(playConfig);
                //设置播放参数
                //realPlayUrl为预览短链接，需要通过调用openApi获取
                hatomPlayer.setDataSource(playUrl, null);
                //设置播放回调
                hatomPlayer.setPlayStatusCallback((status, s) -> {
                    switch (status) {
                        case SUCCESS:
                            Log.i("swyLog", "播放成功");
                            break;
                        case FAILED:
                        case EXCEPTION:
                        case FINISH:
                            hatomPlayer.stop();
                            Log.i("swyLog", "error is : " + MessageFormat.format("播放失败,错误码为：{0}", convertToHexString(s)));
                            break;
                        default:
                            break;
                    }
                });
                hatomPlayer.start();
            }

            @Override
            public void onSurfaceTextureSizeChanged(@NonNull SurfaceTexture surface, int width, int height) {
            }

            @Override
            public boolean onSurfaceTextureDestroyed(@NonNull SurfaceTexture surface) {
                return false;
            }

            @Override
            public void onSurfaceTextureUpdated(@NonNull SurfaceTexture surface) {
            }
        });

//格式化错误码方法
public static String convertToHexString(String errorCode) {
        if (errorCode.startsWith("0x")) {
            return errorCode;
        }
        if (TextUtils.isEmpty(errorCode)) {
            return "";
        }
        int parseInt = Integer.parseInt(errorCode);
        StringBuilder hexCode = new StringBuilder(Integer.toHexString(parseInt));
        if (hexCode.length() < 8) {
            int count = 8 - hexCode.length();
            for (int i = 0; i < count; i++) {
                hexCode.insert(0, "0");
            }
        }
        return MessageFormat.format("{0}{1}", "0x", hexCode.toString());
    }

重要说明：

binding.texture.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
            @Override
            public void onSurfaceTextureAvailable(@NonNull SurfaceTexture surface, int width, int height) {
                //设置播放画面显示surface,支持TextureView和SurfaceView
                hatomPlayer.setSurfaceTexture(binding.texture.getSurfaceTexture());

这里使用的TextureView.getSurfaceTexture，如果不增加SurfaceTextureListener监听，则会无法正常显示监控预览，另外，根据自己在设备上实际测试发现，从设置该回调，到进入onSurfaceTextureAvailable回调，中间会有一段比较长的时间（秒级）

实际业务场景遇到的问题分享：

信息发布系统的业务场景里，因为要单独定义一个组件PreviewWidget，然后父布局动态的addView加载该组件，因为MainActivity中需要执行业务，然后组件中只给外部返回一个hatomPlayer对象，但是把后续代码拿出来之后，就发现总是白屏，显示不出来，打断点发现，texture.getSurfaceTexture总是拿到空，想了很多办法都无法解决。最终发现的问题所在，就是上面说的进入回调会有一个秒级的延时，所以，最终的解决方法就是PreviewWidget中的onSurfaceTextureAvailable响应之后，给MainActivity发event事件通知，然后MainActivity再去执行后续逻辑，至此问题就解决了，代码如下，可以参考一下便于理解本段表述的意思

PreviewWidget

texture_view.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
    @Override
    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
        hatomPlayer.setSurfaceTexture(texture_view.getSurfaceTexture());
        LiveDataBus.getInstance()
                .with(EventBus.PREVIEW_AVAILABLE, PreviewAvailableEvent.class)
                .postValue(new PreviewAvailableEvent());
    }

    @Override
    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {

    }

    @Override
    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
        return false;
    }

    @Override
    public void onSurfaceTextureUpdated(SurfaceTexture surface) {

    }
});

MainActivity

LiveDataBus.getInstance()
        .with(EventBus.PREVIEW_AVAILABLE, PreviewAvailableEvent.class)
        .observe(this, event -> {
            showTextures();
        });

public void showTextures() {
        if (TextUtils.isEmpty(previewUrl)) {
            Log.i("swyLog", "监控预览地址为空");
            return;
        }
        //播放前设置播放配置(可选)
        PlayConfig playConfig = new PlayConfig();
        //使用硬解码
        playConfig.hardDecode = true;
        //开启智能信息
        playConfig.privateData = true;
        hatomPlayer.setPlayConfig(playConfig);
        //设置播放参数
        //预览短链接，需要通过调用openApi获取
//        String url = "rtsp://61.53.68.15:554/openUrl/e9KXHVu";
        hatomPlayer.setDataSource(previewUrl, null);
        //设置播放回调
        hatomPlayer.setPlayStatusCallback((status, s) -> {
            switch (status) {
                case SUCCESS:
                    runOnUiThread(() -> {
                        previewWidget.setError("");
                        Log.i("swyLog", "播放成功");
                    });
                    break;
                case FAILED:
                case EXCEPTION:
                case FINISH:
                    runOnUiThread(() -> {
                        hatomPlayer.stop();
                        previewWidget.setError(MessageFormat.format("播放失败,错误码为：{0}", convertToHexString(s)));
                        Log.i("swyLog", "error is : " + MessageFormat.format("播放失败,错误码为：{0}", convertToHexString(s)));
                    });
                    break;
                default:
                    break;
            }
        });
        hatomPlayer.start();
    }

至此完结

demo源码