public class

LensFacingConverter

extends java.lang.Object

 java.lang.Object

↳androidx.camera.core.impl.LensFacingConverter

Gradle dependencies

compile group: 'androidx.camera', name: 'camera-core', version: '1.2.0-alpha01'

  • groupId: androidx.camera
  • artifactId: camera-core
  • version: 1.2.0-alpha01

Artifact androidx.camera:camera-core:1.2.0-alpha01 it located at Google repository (https://maven.google.com/)

Overview

Helper class that defines certain enum-like methods for

Summary

Methods
public static java.lang.StringnameOf(int lensFacing)

Returns the name of the constant, exactly as it is declared.

public static intvalueOf(java.lang.String name)

Returns the constant for the specified name

public static java.lang.Integervalues()

from java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods

public static java.lang.Integer values()

Returns:

an array containing the constants of in the order they're declared.

public static int valueOf(java.lang.String name)

Returns the constant for the specified name

Parameters:

name: The name of the to return

Returns:

The constant for the specified name

public static java.lang.String nameOf(int lensFacing)

Returns the name of the constant, exactly as it is declared.

Parameters:

lensFacing: A constant

Returns:

The name of the constant.

Source

/*
 * Copyright 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.camera.core.impl;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.camera.core.CameraSelector;

/**
 * Helper class that defines certain enum-like methods for {@link CameraSelector.LensFacing}
 */
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class LensFacingConverter {

    private LensFacingConverter() {
    }

    /**
     * @return an array containing the constants of {@link CameraSelector.LensFacing} in the
     * order they're declared.
     */
    @NonNull
    public static Integer[] values() {
        return new Integer[]{CameraSelector.LENS_FACING_FRONT, CameraSelector.LENS_FACING_BACK};
    }

    /**
     * Returns the {@link CameraSelector.LensFacing} constant for the specified name
     *
     * @param name The name of the {@link CameraSelector.LensFacing} to return
     * @return The {@link CameraSelector.LensFacing} constant for the specified name
     */
    @CameraSelector.LensFacing
    public static int valueOf(@Nullable final String name) {
        if (name == null) {
            throw new NullPointerException("name cannot be null");
        }

        switch (name) {
            case "FRONT":
                return CameraSelector.LENS_FACING_FRONT;
            case "BACK":
                return CameraSelector.LENS_FACING_BACK;
            default:
                throw new IllegalArgumentException("Unknown len facing name " + name);
        }
    }

    /**
     * Returns the name of the {@link CameraSelector.LensFacing} constant, exactly as it is
     * declared.
     *
     * @param lensFacing A {@link CameraSelector.LensFacing} constant
     * @return The name of the {@link CameraSelector.LensFacing} constant.
     */
    @NonNull
    public static String nameOf(@CameraSelector.LensFacing final int lensFacing) {
        switch (lensFacing) {
            case CameraSelector.LENS_FACING_FRONT:
                return "FRONT";
            case CameraSelector.LENS_FACING_BACK:
                return "BACK";
            default:
                throw new IllegalArgumentException("Unknown lens facing " + lensFacing);
        }
    }
}