1. 交代背景
我是个人开发者, 然后我的app需要制作ios端, 我的用户要求出苹果版, 然后我的swift学得渣, 所以只有学学flutter了. 然而很遗憾的是国内没有任何一家广告联盟出了flutter SDK. 所以不得不收集资料搞一波flutter显示原生View.
2. 技术交底
搜索了下, 需要使用到Flutter的插件机制, 所以请自行熟悉下AndroidView, MethodChannel, PlatformView.
3.效果图
下面的Banner2是安卓原生的广告sdk哟.4.Android上实现:
class MainActivity : FlutterActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
GeneratedPluginRegistrant.registerWith(this)
//Banner插件
BannerPlugin.registerWith(this, this)
}
}
复制代码BannerPlugin.java
public final class BannerPlugin {
public static void registerWith(PluginRegistry registry, Activity activity) {
final String key = BannerPlugin.class.getCanonicalName();
if (registry.hasPlugin(key)) return;
PluginRegistry.Registrar registrar = registry.registrarFor(key);
//这个banner就是flutter调用的依据
registrar.platformViewRegistry().registerViewFactory("banner", new BannerViewFactory(new StandardMessageCodec(), activity, registrar.messenger()));
}
}
复制代码BannerViewFactory.java
public class BannerViewFactory extends PlatformViewFactory {
private Activity activity;
private BinaryMessenger messenger;
public BannerViewFactory(MessageCodecMyBannerView.java
public class MyBannerView implements PlatformView, MethodChannel.MethodCallHandler {
private UnifiedBannerView bannerView;
private LinearLayout linearLayout;
private Activity activity;
MyBannerView(Activity activity, BinaryMessenger messenger, int id) {
MethodChannel methodChannel = new MethodChannel(messenger, "banner_" + id);
methodChannel.setMethodCallHandler(this);
this.activity = activity;
if (linearLayout == null) {
linearLayout = new LinearLayout(activity);
}
}
@Override
public View getView() {
return linearLayout;
}
@Override
public void dispose() {
if (bannerView != null)
bannerView.destroy();
}
@Override
public void onMethodCall(MethodCall methodCall, MethodChannel.Result result) {
switch (methodCall.method) {
case "setBannerId":
setText(methodCall, result);
break;
default:
result.notImplemented();
}
}
private void setText(MethodCall methodCall, MethodChannel.Result result) {
List bannerId = (List) methodCall.arguments;
System.out.println(bannerId);
if (bannerView == null){
bannerView = new UnifiedBannerView(activity, bannerId.get(0), bannerId.get(1), new UnifiedBannerADListener() {
@Override
public void onNoAD(AdError adError) {
System.out.println(adError.toString());
}
@Override
public void onADReceive() {
}
@Override
public void onADExposure() {
}
@Override
public void onADClosed() {
}
@Override
public void onADClicked() {
}
@Override
public void onADLeftApplication() {
}
@Override
public void onADOpenOverlay() {
}
@Override
public void onADCloseOverlay() {
}
});
}
linearLayout.addView(bannerView);
bannerView.loadAD();
result.success(null);
}
}
复制代码 其中的MethodChannel的onMethodCall就是flutter主动给activity传值的. 传值方法是setBannerId, 把APPID和广告位ID传送到Native端, 这样就可以把Banner2添加到linearLayout里面去了, 是不是很简单辣, 下面看看Flutter里面该怎么用?
Row(
children: [
Expanded(
child: Container(
child: AndroidView(
viewType: "banner",
onPlatformViewCreated: (id) {
var data = ["1101152570", "4080052898050840"];
var channel = MethodChannel("banner_$id");
channel.invokeListMethod("setBannerId", data);
},
),
height: 56,
),
),
],
复制代码 主要是AndroidView的banner是Android那边注册的view name. 这篇文章是为了记录我在学习flutter添加banner广告的过程. 不喜勿喷, 谢谢