Facedemo填空代码

<!--todo step 1:  add authorization of camera -->
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.CAMERA"/>

// todo step 2: add on-device face analyzer
MLFaceAnalyzerSetting setting = new MLFaceAnalyzerSetting.Factory()
        .setFeatureType(MLFaceAnalyzerSetting.TYPE_FEATURES)
        .setPerformanceType(MLFaceAnalyzerSetting.TYPE_SPEED)
        .allowTracing()
        .create();
this.analyzer = MLAnalyzerFactory.getInstance().getFaceAnalyzer(setting);
// finish

// todo step 3: add on-device lens engine
this.mLensEngine = new LensEngine.Creator(context, this.analyzer)
        .setLensType(this.lensType)
        .applyDisplayDimension(1600, 1024)
        .applyFps(25.0f)
        .enableAutomaticFocus(true)
        .create();
// finish

// todo step 4: add on-device face graphic
MLFaceGraphic graphic = new MLFaceGraphic(this.mGraphicOverlay, faceSparseArray.valueAt(i));
this.mGraphicOverlay.add(graphic);
// finish