接上篇：播放器-IOS(Swift)篇
安卓端原生播放器的接入思路与ios基本一致，所以本篇就不废话了，直接上代码：
创建插件VideoViewPlugin实现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");
}
}由于引用视频播放器时需要用到Activity的context，所以实现了ActivityAware接口，在onAttachedToActivity方法中注册PlatformViewFactory！
创建VideoViewFactory实现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);
}
}
创建VideoViewPlayer，实现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库，你可以根据自己情况，使用常见的安卓端开源播放器如GSY，饺子，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中注册插件：
class MainActivity : FlutterActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
flutterEngine!!.plugins.add(VideoViewPlugin())
}
}
注意：不要在GeneratedPluginRegistrant中去注册插件包括IOS，这个类由系统自动生成其它第三方插件注册代码！安卓端在MainActivity中注册，IOS端在AppDelegate中注册！
flutter中的引用以及通信方法，上一篇已经写了，本篇就不再重复了！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！
