如何在Android中添加YouTube实时流功能？

YouTube提供了一种在其平台上制作实时流视频以与您的订阅者建立联系的服务。在本文中，我们将介绍Android App中YouTube视频实时流视频的实现。

我们将在本文中构建什么?

我们将构建一个简单的应用程序，其中将显示一个简单的按钮，然后单击该按钮，我们将在YouTube上进行实时直播。下面提供了一个示例视频，以使您对本文中的工作有个大概的了解。注意，我们将使用Java语言实现该项目。

分步实施

步骤1：创建一个新项目

要在Android Studio中创建新项目，请参阅如何在Android Studio中创建/启动新项目。请注意，选择Java作为编程语言。

步骤2：使用activity_main.xml文件

导航到应用程序> res>布局> activity_main.xml，然后将以下代码添加到该文件中。以下是activity_main.xml文件的代码。

步骤3：使用MainActivity。 Java文件

转到MainActivity。 Java文件并参考以下代码。下面是MainActivity的代码。 Java文件。在代码内部添加了注释，以更详细地了解代码。

Java

import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
  
import androidx.appcompat.app.AppCompatActivity;
  
import java.util.List;
  
public class MainActivity extends AppCompatActivity {
    // creating a variable for button
    // to start youtube live stream
    private Button startBtn;
  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
  
        // adding on click listener to our button.
        startBtn = findViewById(R.id.idBtnStartLiveStream);
        startBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // calling a method to check if the device has
                // support to make youtube live stream or not.
                validateMobileLiveIntent(MainActivity.this);
            }
        });
    }
  
    private boolean canResolveMobileLiveIntent(Context context) {
        // in this method we are calling a youtube live  intent package name
        // and we are checking if youtube live intent is present or not.
        Intent intent = new Intent("com.google.android.youtube.intent.action.CREATE_LIVE_STREAM").setPackage("com.google.android.youtube");
        PackageManager pm = context.getPackageManager();
        List resolveInfo = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
  
        // returning the result after checking
        // the youtube live stream intent.
        return resolveInfo != null && !resolveInfo.isEmpty();
    }
  
    private void validateMobileLiveIntent(Context context) {
        if (canResolveMobileLiveIntent(context)) {
            // Launch the live stream Activity
            startMobileLive(MainActivity.this);
        } else {
            // on below line displaying a toast message if the intent is not present.
            Toast.makeText(context, "Please Update your Youtube app.", Toast.LENGTH_SHORT).show();
            // Prompt user to install or upgrade the YouTube app
        }
    }
  
    // method to create our intent for youtube live stream.
    private Intent createMobileLiveIntent(Context context, String description) {
  
        // on below line we are creating a new intent and we are setting package name to it.
        Intent intent = new Intent("com.google.android.youtube.intent.action.CREATE_LIVE_STREAM").setPackage("com.google.android.youtube");
  
        // on below line we are creating a new uri and setting
        // a scheme to it and appending our path with our package name.
        Uri referrer = new Uri.Builder()
                .scheme("android-app")
                .appendPath(context.getPackageName())
                .build();
        // on above line we are building our intent.
        // on below line we are adding our referer
        // and subject for our live video.
        intent.putExtra(Intent.EXTRA_REFERRER, referrer);
        if (!TextUtils.isEmpty(description)) {
            intent.putExtra(Intent.EXTRA_SUBJECT, description);
        }
        // at last we are returning intent.
        return intent;
    }
  
    private void startMobileLive(Context context) {
  
        // calling a method to create an intent.
        Intent mobileLiveIntent = createMobileLiveIntent(context, "Streaming via ...");
  
        // on below line we are calling
        // our activity to start stream
        startActivity(mobileLiveIntent);
    }
}

现在运行您的应用程序，并查看该应用程序的输出。

输出：