如何在设备启动时启动android应用程序？

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

public class BootReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            Intent startupIntent = new Intent(context, YourMainActivity.class);
            startupIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(startupIntent);
        }
    }
}

<receiver
    android:name=".BootReceiver"
    android:enabled="true"
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

<service
    android:name=".YourService"
    android:enabled="true"
    android:exported="false" />

public class YourService extends Service {
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Intent startupIntent = new Intent(this, YourMainActivity.class);
        startupIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(startupIntent);
        return START_STICKY;
    }
}

public class BootReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            Intent serviceIntent = new Intent(context, YourService.class);
            context.startService(serviceIntent);
        }
    }
}

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

public class YourContentProvider extends ContentProvider {
    @Override
    public boolean onCreate() {
        Intent startupIntent = new Intent(getContext(), YourMainActivity.class);
        startupIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        getContext().startActivity(startupIntent);
        return true;
    }
    ...
}

public class BootReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
            Uri contentProviderUri = Uri.parse("content://com.your.app.YourContentProvider");
            context.getContentResolver().query(contentProviderUri, null, null, null, null);
        }
    }
}