在android中以编程方式显示当前运行的应用程序

import android.app.ActivityManager;
import android.content.Context;
import android.os.Bundle;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import java.util.List;

public class MainActivity extends AppCompatActivity {

    private TextView runningAppsTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        runningAppsTextView = findViewById(R.id.running_apps_textview);

        // 获取ActivityManager实例
        ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);

        // 获取正在运行的应用程序列表
        List<ActivityManager.RunningAppProcessInfo> runningAppProcesses = activityManager.getRunningAppProcesses();

        StringBuilder stringBuilder = new StringBuilder();

        // 遍历应用程序列表并显示
        for (ActivityManager.RunningAppProcessInfo processInfo : runningAppProcesses) {
            stringBuilder.append(processInfo.processName).append("\n");
        }

        runningAppsTextView.setText(stringBuilder.toString());
    }
}

请注意，以上链接中的产品和服务是腾讯云提供的，仅供参考。