用App制作一款猫脸识别器

一起用代码吸猫！本文正在参与【喵星人征文活动】。

前言

掘金大大又出了新活动，舒服！我喜欢！话不多说，直接开始整活！

先来看看效果： BilBil视频：

准备工作：

百度动物识别API
Android开发环境

1、配置百度API环境

进入百度SDK首页，注册并登录对应账号，然后进行认证（公司、个人）
如图所示，选择对应的API文档，并点击立即使用！
在对应的应用管理里面创建属于自己的项目，并且开通动物识别API！（免费的即可，体验次数够用）
如图所示，进入对应的应用详情，拿到对应的AppId以及AppKey！

2、开始整活

打开AS，创建一个全新的空项目。

打开主Module对应的buld.gradle添加如下代码


android {
    ...略
    defaultConfig {
     ...略
     	//写入对应的默认配置
        buildConfigField 'String','GET_OAUTH_TOKEN_URL','"https://aip.baidubce.com/oauth/2.0/token?"'
        buildConfigField 'String','AK','"2p8d23GtrBHyaQixgqyPtAIM"'
        buildConfigField 'String','SECRET','"0SWfrU65xRu6Gxq7nuTHoskRAKLd5rht "'
        buildConfigField 'String','GET_ANIMAL_URL','"https://aip.baidubce.com/rest/2.0/image-classify/v1/animal"'
    }
...略


dependencies{
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
    implementation project(path: ':easyPhotos')
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
    implementation 'com.github.bumptech.glide:glide:4.12.0'
    implementation 'com.google.code.gson:gson:2.2.4'
    // 权限请求框架：https://github.com/getActivity/XXPermissions
    implementation 'com.github.getActivity:XXPermissions:12.8'
    implementation 'org.projectlombok:lombok:1.18.8'
    annotationProcessor 'org.projectlombok:lombok:1.18.8'
}

}

对应的AndroidManifest添加相应的配置：

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<application
	...略
	
	 <meta-data
            android:name="ScopedStorage"
            android:value="true" />
 </application>

权限申请

  public void getWriteAndCameraPermission() {
        XXPermissions.with(this)
                // 申请单个权限
                .permission(Permission.CAMERA)
                // 申请多个权限
                .permission(Permission.Group.STORAGE)
                .request(new OnPermissionCallback() {

                    @Override
                    public void onGranted(List<String> permissions, boolean all) {
                        if (all) {
//                            toast("获取权限成功");
                            doPermissionSuccess();
                        } else {
                            getWriteAndCameraPermission();
                        }
                    }
                    @Override
                    public void onDenied(List<String> permissions, boolean never) {
                        if (never) {
                            toast("被永久拒绝授权，请手动授予权限");
                            // 如果是被永久拒绝就跳转到应用权限系统设置页面
                            XXPermissions.startPermissionActivity(BaseActivity.this, permissions);
                        } else {
                            toast("获取权限失败");
                        }
                    }
                });
    }

权限成功回调

    @Override
    protected void doPermissionSuccess() {
    	//权限申请成功回调后，打开手机照相机
        EasyPhotos.createCamera(this).start(new SelectCallback() {
            @Override
            public void onResult(ArrayList<Photo> photos, ArrayList<String> paths, boolean isOriginal) {
            	//照相机回调结果
                logCat("doPhotoLast onResult : ");
                if (paths == null || paths.size() == 0)
                    return;
                //开始处理图片，进行猫脸识别。
                doPhotoLast(paths.get(0));
            }
        });
    }

获取百度API对应的Token:
调用百度API对应的动物识别

调用成功后的回调处理

    @Override
    public boolean handleMessage(@NonNull  Message message) {
        logCat("handleMessage  message.what "+message.what);
        switch (message.what) {
            case 1001:
                /*
                * {
                    "refresh_token": "25.6a79e94b2cc92571e57c12f16b3d062d.315360000.1951874992.282335-25104979",
                    "expires_in": 2592000,
                    "session_key": "9mzdA5/DKxagseJ/y/Gmyi+PuJzy8+QyeISLV0LFDFpMMe67P4NW6v+6lTIjnLlNpWcoZbzSXZqGqflBX913xRNT9mmTug==",
                    "access_token": "24.8511933b8b244e2d0863ebb0d43ca5e2.2592000.1639106992.282335-25104979",
                    "scope": "public vis-classify_dishes vis-classify_car brain_all_scope vis-classify_animal vis-classify_plant brain_object_detect brain_realtime_logo brain_dish_detect brain_car_detect brain_animal_classify brain_plant_classify brain_ingredient brain_advanced_general_classify brain_custom_dish brain_poi_recognize brain_vehicle_detect brain_redwine brain_currency brain_vehicle_damage brain_multi_ object_detect wise_adapt lebo_resource_base lightservice_public hetu_basic lightcms_map_poi kaidian_kaidian ApsMisTest_Test权限 vis-classify_flower lpq_开放 cop_helloScope ApsMis_fangdi_permission smartapp_snsapi_base smartapp_mapp_dev_manage iop_autocar oauth_tp_app smartapp_smart_game_openapi oauth_sessionkey smartapp_swanid_verify smartapp_opensource_openapi smartapp_opensource_recapi fake_face_detect_开放Scope vis-ocr_虚拟人物助理 idl-video_虚拟人物助理 smartapp_component smartapp_search_plugin avatar_video_test b2b_tp_openapi b2b_tp_openapi_online",
                    "session_secret": "94ec45de181d151310d55efb96aa02b3"
                  }
                * */
                accessToken = (String) message.obj;
                toast("初始化完成！");
                break;
            case 1002:
                String result = (String) message.obj;
                //{"result":[{"name":"孟买猫","score":"0.870167"},{"name":"德文帝王猫","score":"0.0221098"},{"name":"玄猫","score":"0.0211879"},{"name":"哈瓦那棕猫","score":"0.0176104"},{"name":"科拉特猫","score":"0.00979233"},{"name":"俄罗斯蓝猫","score":"0.00612372"}],"log_id":1458311455921558025}
                logCat("result: "+result);
                parseCatInfo(result);
                break;
        }
        return super.handleMessage(message);
    }

显示小喵咪结果

    private void parseCatInfo(String result) {
        CatInfo catInfo = gson.fromJson(result, CatInfo.class);
        List<CatInfo.ResultBean> listCat = catInfo.getResult();
        if (listCat.size() == 0) {
            toast("猫脸识别失败！");
            return;
        }
        textCatName.setText(listCat.get(0).getName());
    }

3、Demo下载：点我下载

结束语

好了，本篇文章到这里就差不多结束了。内容很简单，就是调用百度API的动物识别API接口就行了，然后根据高分将对应名称显示出来即可！