MainAbility.java

package ohos.samples.camera;

import ohos.samples.camera.slice.MainAbilitySlice;

import ohos.aafwk.ability.Ability;
import ohos.aafwk.content.Intent;
import ohos.bundle.IBundleManager;
import ohos.security.SystemPermission;

import java.util.Arrays;

/**
 * MainAbility
 */
public class MainAbility extends Ability {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setMainRoute(MainAbilitySlice.class.getName());
        requestPermissions();
    }

    private void requestPermissions() {
        String[] permissions = {
                SystemPermission.WRITE_USER_STORAGE, SystemPermission.READ_USER_STORAGE, SystemPermission.CAMERA,
                SystemPermission.MICROPHONE, SystemPermission.LOCATION
        };
        requestPermissionsFromUser(Arrays.stream(permissions)
                .filter(permission -> verifySelfPermission(permission) != IBundleManager.PERMISSION_GRANTED).toArray(String[]::new), 0);
    }

    @Override
    public void onRequestPermissionsFromUserResult(int requestCode, String[] permissions, int[] grantResults) {
        if (permissions == null || permissions.length == 0 || grantResults == null || grantResults.length == 0) {
            return;
        }
        for (int grantResult : grantResults) {
            if (grantResult != IBundleManager.PERMISSION_GRANTED) {
                terminateAbility();
                break;
            }
        }
    }
}

Create MainAbilitySlice.java ability and add the below code.

package ohos.samples.camera.slice;

import ohos.samples.camera.ResourceTable;
import ohos.samples.camera.TakePhotoAbility;
import ohos.samples.camera.VideoRecordAbility;

import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.aafwk.content.Operation;
import ohos.agp.components.Component;

/**
 * MainAbilitySlice
 */
public class MainAbilitySlice extends AbilitySlice {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_main_ability_slice);
        initComponents();
    }

    private void initComponents() {
        Component takePhoto = findComponentById(ResourceTable.Id_take_photo);
        Component videoRecord = findComponentById(ResourceTable.Id_video_record);
        takePhoto.setClickedListener((component) -> startAbility(TakePhotoAbility.class.getName()));
        videoRecord.setClickedListener((component) -> startAbility(VideoRecordAbility.class.getName()));
    }

    private void startAbility(String abilityName) {
        Operation operation = new Intent.OperationBuilder()
                .withDeviceId("")
                .withBundleName(getBundleName())
                .withAbilityName(abilityName)
                .build();
        Intent intent = new Intent();
        intent.setOperation(operation);
        startAbility(intent);
    }
}