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Flutter使用Android原生播放器詳解

 更新時間：2023年02月28日 10:19:46   作者：白玉梁  
這篇文章主要介紹了Flutter使用Android原生播放器，自己寫Flutter也有一段時間了，剛好最近公司的項目想在PC端重寫一個，就想著用Flutter實現(xiàn)試一試

接上篇：播放器-IOS(Swift)篇

安卓端原生播放器的接入思路與ios基本一致，所以本篇就不廢話了，直接上代碼：

創(chuàng)建插件VideoViewPlugin實現(xiàn)FlutterPlugin：

package io.flutter.plugins.videoplayer;
import android.util.Log;
import androidx.annotation.NonNull;
import io.flutter.embedding.engine.plugins.FlutterPlugin;
import io.flutter.embedding.engine.plugins.activity.ActivityAware;
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
public class VideoViewPlugin implements FlutterPlugin, ActivityAware {
    private final static String TAG = "VideoViewPlugin";
    FlutterPluginBinding fpBinding;
    @Override
    public void onAttachedToEngine(@NonNull FlutterPluginBinding binding) {
        fpBinding = binding;
        Log.e(TAG, "onAttachedToEngine");
    }
    @Override
    public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
        Log.e(TAG, "onDetachedFromEngine");
    }
    @Override
    public void onAttachedToActivity(@NonNull ActivityPluginBinding apBinding) {
        fpBinding.getPlatformViewRegistry().registerViewFactory("plugins.my_video_player/view", new VideoViewFactory(fpBinding, apBinding));
        Log.e(TAG, "onAttachedToActivity");
    }
    @Override
    public void onDetachedFromActivityForConfigChanges() {
        Log.e(TAG, "onDetachedFromActivityForConfigChanges");
    }
    @Override
    public void onReattachedToActivityForConfigChanges(@NonNull ActivityPluginBinding binding) {
        Log.e(TAG, "onReattachedToActivityForConfigChanges");
    }
    @Override
    public void onDetachedFromActivity() {
        Log.e(TAG, "onDetachedFromActivity");
    }
}

由于引用視頻播放器時需要用到Activity的context，所以實現(xiàn)了ActivityAware接口，在onAttachedToActivity方法中注冊PlatformViewFactory！

創(chuàng)建VideoViewFactory實現(xiàn)PlatformViewFactory：

package io.flutter.plugins.videoplayer;
import android.content.Context;
import io.flutter.Log;
import io.flutter.embedding.engine.plugins.FlutterPlugin;
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
import io.flutter.plugin.common.StandardMessageCodec;
import io.flutter.plugin.platform.PlatformView;
import io.flutter.plugin.platform.PlatformViewFactory;
public class VideoViewFactory extends PlatformViewFactory {
    private final static String TAG = "VideoViewFactory";
    private final FlutterPlugin.FlutterPluginBinding fpBinding;
    private final ActivityPluginBinding apBinding;
    public VideoViewFactory(FlutterPlugin.FlutterPluginBinding fpBinding, ActivityPluginBinding apBinding) {
        super(StandardMessageCodec.INSTANCE);
        Log.e(TAG, "VideoViewFactory");
        this.fpBinding = fpBinding;
        this.apBinding = apBinding;
    }
    @Override
    public PlatformView create(Context context, int viewId, Object args) {
        Log.e(TAG, "PlatformView-create:" + args.toString());
        return new VideoViewPlayer(args.toString(), fpBinding, apBinding);
    }
}

創(chuàng)建VideoViewPlayer，實現(xiàn)PlatformView和MethodChannel.MethodCallHandler：

package io.flutter.plugins.videoplayer;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.th.kjjl_flutter.R;
import com.videoplayer.player.VideoView;
import io.flutter.embedding.engine.plugins.FlutterPlugin;
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugin.platform.PlatformView;
public class VideoViewPlayer implements PlatformView, MethodChannel.MethodCallHandler {
    private final static String TAG = "VideoPlayerView";
    Activity context;
    private VideoView videoView;
    private MethodChannel methodChannel;
    VideoViewPlayer(String viewId, FlutterPlugin.FlutterPluginBinding fpBinding, ActivityPluginBinding apBinding) {
        this.context = apBinding.getActivity();
        videoView = (VideoView) LayoutInflater.from(context).inflate(R.layout.video_player, null);
        methodChannel = new MethodChannel(fpBinding.getBinaryMessenger(), "my_video_player_" + viewId);
        methodChannel.setMethodCallHandler(this);
    }
    @Override
    public void onMethodCall(@NonNull MethodCall call, @NonNull MethodChannel.Result result) {
        Log.e(TAG, "call.method>>" + call.method);
        switch (call.method) {
            case "setUrl":
                String url = call.arguments.toString();
                videoView.initVideoController(context);
                videoView.setUrl(url);
                break;
            case "start":
                videoView.start();
                break;
            case "pause":
                videoView.pause();
                break;
            case "release":
                videoView.pause();
                videoView.release();
                break;
            case "stopFullScreen":
                videoView.stopFullScreen();
                break;
            default:
                result.notImplemented();
        }
    }
    @Nullable
    @Override
    public View getView() {
        return videoView;
    }
    @Override
    public void dispose() {
        Log.e(TAG, "dispose>>");
        videoView.pause();
        videoView.release();
        methodChannel.setMethodCallHandler(null);
        methodChannel = null;
    }
}

其中的VideoView即引用的第三方播放器庫，你可以根據(jù)自己情況，使用常見的安卓端開源播放器如GSY，餃子，DKPlayer等！

video_player.xml：

<?xml version="1.0" encoding="utf-8"?>
<com.videoplayer.player.VideoView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/videoView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

在MainActivity中注冊插件：

class MainActivity : FlutterActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        flutterEngine!!.plugins.add(VideoViewPlugin())
    }
}

注意：不要在GeneratedPluginRegistrant中去注冊插件包括IOS，這個類由系統(tǒng)自動生成其它第三方插件注冊代碼！安卓端在MainActivity中注冊，IOS端在AppDelegate中注冊！

flutter中的引用以及通信方法，上一篇已經(jīng)寫了，本篇就不再重復了！需要注意的是，插件名，插件id，methodChannel等，安卓，IOS和Flutter三端一定要一致！

到此這篇關(guān)于Flutter使用Android原生播放器詳解的文章就介紹到這了,更多相關(guān)Flutter播放器內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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