java - 异常:ClassNotFoundException & NoClassDefFoundError At Release Run Application

Question

当在 Debug模式下运行应用程序时工作成功但是当使用发布构建运行时出现以下错误:

Fatal Exception: java.lang.NoClassDefFoundError: Failed resolution of: Laa$c;
       at com.marvhong.videoeffect.helper.MagicFilterFactory.filterType2Name + 105(MagicFilterFactory.java:105)
       at com.ui.audiovideoeditor.activity.TrimVideoActivity.initView + 265(TrimVideoActivity.java:265)
       at com.ui.audiovideoeditor.base.TrimmerBaseActivity.onCreate + 78(TrimmerBaseActivity.java:78)
       at android.app.Activity.performCreate + 7032(Activity.java:7032)
       at android.app.Activity.performCreate + 7023(Activity.java:7023)
       at android.app.Instrumentation.callActivityOnCreate + 1236(Instrumentation.java:1236)
       at android.app.ActivityThread.performLaunchActivity + 2814(ActivityThread.java:2814)
       at android.app.ActivityThread.handleLaunchActivity + 2943(ActivityThread.java:2943)
       at android.app.ActivityThread.-wrap11(ActivityThread.java)
       at android.app.ActivityThread$H.handleMessage + 1630(ActivityThread.java:1630)
       at android.os.Handler.dispatchMessage + 106(Handler.java:106)
       at android.os.Looper.loop + 164(Looper.java:164)
       at android.app.ActivityThread.main + 6626(ActivityThread.java:6626)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run + 438(RuntimeInit.java:438)
       at com.android.internal.os.ZygoteInit.main + 811(ZygoteInit.java:811)


Caused by java.lang.ClassNotFoundException: Didn't find class "aa$c" on path: DexPathList[[zip file "/data/app/com.socialmediavideoadsmaker-TZFvA-VXiNm9BBp_hNHgGw==/base.apk"],nativeLibraryDirectories=[/data/app/com.socialmediavideoadsmaker-TZFvA-VXiNm9BBp_hNHgGw==/lib/arm, /data/app/com.socialmediavideoadsmaker-TZFvA-VXiNm9BBp_hNHgGw==/base.apk!/lib/armeabi-v7a, /system/lib, /system/vendor/lib]]
       at dalvik.system.BaseDexClassLoader.findClass + 125(BaseDexClassLoader.java:125)
       at java.lang.ClassLoader.loadClass + 379(ClassLoader.java:379)
       at java.lang.ClassLoader.loadClass + 312(ClassLoader.java:312)
       at com.marvhong.videoeffect.helper.MagicFilterFactory.filterType2Name + 105(MagicFilterFactory.java:105)
       at com.ui.audiovideoeditor.activity.TrimVideoActivity.initView + 265(TrimVideoActivity.java:265)
       at com.ui.audiovideoeditor.base.TrimmerBaseActivity.onCreate + 78(TrimmerBaseActivity.java:78)
       at android.app.Activity.performCreate + 7032(Activity.java:7032)
       at android.app.Activity.performCreate + 7023(Activity.java:7023)
       at android.app.Instrumentation.callActivityOnCreate + 1236(Instrumentation.java:1236)
       at android.app.ActivityThread.performLaunchActivity + 2814(ActivityThread.java:2814)
       at android.app.ActivityThread.handleLaunchActivity + 2943(ActivityThread.java:2943)
       at android.app.ActivityThread.-wrap11(ActivityThread.java)
       at android.app.ActivityThread$H.handleMessage + 1630(ActivityThread.java:1630)
       at android.os.Handler.dispatchMessage + 106(Handler.java:106)
       at android.os.Looper.loop + 164(Looper.java:164)
       at android.app.ActivityThread.main + 6626(ActivityThread.java:6626)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run + 438(RuntimeInit.java:438)
       at com.android.internal.os.ZygoteInit.main + 811(ZygoteInit.java:811)

此异常来自 Crshlytics。我使用过的视频效果库，在此库中，以下是发布应用程序中未找到的类:

public class MagicFilterFactory {

    /**
     * 视频滤镜效果
     * @return
     */
    public static GlFilter getFilter() {
        MagicFilterType filterType = ConfigUtils.getInstance().getMagicFilterType();
        return getFilter(filterType);
    }

    private static GlFilter getFilter(MagicFilterType filterType) {
        switch (filterType) {
            case NONE:
                return new GlFilter();
            case BILATERAL:
                return new GlBilateralFilter();
            case BOXBLUR:
                return new GlBoxBlurFilter();
            case BULGEDISTORTION:
                return new GlBulgeDistortionFilter();
            case CGACOLORSPACE:
                return new GlCGAColorspaceFilter();
            case GAUSSIANBLUR:
                return new GlGaussianBlurFilter();
            case GRAYSCALE:
                return new GlGrayScaleFilter();
            case HAZE:
                return new GlHazeFilter(0.5f, 0.3f);
            case INVERT:
                return new GlInvertFilter();
            case LUT:
                return new GlVignetteFilter();
            case MONOCHROME:
                return new GlMonochromeFilter();
            case SEPIA:
                return new SepiaEffect();
            case SHARPEN:
                return new GlSharpenFilter(3.f);
            case SPHEREREFRACTION:
                return new GlSphereRefractionFilter();
            case TONECURVE:
                return new GlToneCurveFilter();
            case VIGNETTE:
                return new GlVignetteFilter(0.5f, 0.5f, 0.2f, 0.85f);
            case BLACKANDWHITE:
                return new BlackAndWhiteEffect();
            case OVERLAY:
                return new OverlayEffect();
            case BARRELBLUR:
                return new BarrelBlurEffect();
            case POSTERIZE:
                return new PosterizeEffect();
            case CONTRAST:
                return new ContrastEffect();
            case GAMMA:
                return new GammaEffect();
            case CROSSPROCESS:
                return new CrossProcessEffect();
            case HUE:
                return new HueEffect();
            case TEMPERATURE:
                return new TemperatureEffect();
            case SKETCH:
                return new SketchEffect();
            default:
                return new GlFilter();
        }
    }

    public static int filterType2Name(MagicFilterType filterType) {
        switch (filterType) {
            case NONE:
                return R.string.filter_none;
            case INVERT:
                return R.string.filter_invert;
            case MONOCHROME:
                return R.string.filter_monochrome;
            case SEPIA:
                return R.string.filter_sepia;
            case GRAYSCALE:
                return R.string.filter_grayscale;
            case SHARPEN:
                return R.string.filter_sharpen;
            case SPHEREREFRACTION:
                return R.string.filter_sphererefraction;
            case BULGEDISTORTION:
                return R.string.filter_bulgedistortion;
            case CGACOLORSPACE:
                return R.string.filter_cgacolorspace;
            case HAZE:
                return R.string.filter_haze;
            case BILATERAL:
                return R.string.filter_bilateral;
            case TONECURVE:
                return R.string.filter_tonecurve;
            case VIGNETTE:
                return R.string.filter_vignette;
            case BLACKANDWHITE:
                return R.string.filter_blackandwhite;
            case OVERLAY:
                return R.string.filter_overlay;
            case BARRELBLUR:
                return R.string.filter_barrelblur;
            case POSTERIZE:
                return R.string.filter_posterize;
            case CONTRAST:
                return R.string.filter_contrast;
            case GAMMA:
                return R.string.filter_gamma;
            case CROSSPROCESS:
                return R.string.filter_crossprocess;
            case HUE:
                return R.string.filter_hue;
            case TEMPERATURE:
                return R.string.filter_temperature;
            case SKETCH:
                return R.string.filter_sketch;
            default:
                return R.string.filter_none;
        }
    }

    public static int filterType2Color(MagicFilterType filterType) {
        switch (filterType) {
            case NONE:
                return R.color.filter_category_greenish_dummy;

            default:
                return R.color.filter_category_greenish_normal;
        }
    }

    public static int filterType2Thumb(MagicFilterType filterType) {
        switch (filterType) {
            case NONE:
                return R.drawable.filter;
            case INVERT:
                return R.drawable.filter_invert;
            case SEPIA:
                return R.drawable.filter_sepia;
            case GRAYSCALE:
                return R.drawable.filter_grayscale;
            case CGACOLORSPACE:
                return R.drawable.filter_cgacolorspace;
            case BARRELBLUR:
                return R.drawable.filter_barrelblur;
            case BLACKANDWHITE:
                return R.drawable.filter_blackandwhite;
            case CONTRAST:
                return R.drawable.filter_contrast;
            case CROSSPROCESS:
                return R.drawable.filter_crossprocess;
            case GAMMA:
                return R.drawable.filter_gamma;
            case HUE:
                return R.drawable.filter_hue;
            case OVERLAY:
                return R.drawable.filter_overlay;
            case TEMPERATURE:
                return R.drawable.filter_temperature;
            default:
                return R.drawable.filter;
        }
    }
}

有一个类在发布时没有找到。

此外，我还应用了以下解决方案:1) Android: java.lang.NoClassDefFoundError on the release APK2) Android: NoClassDefFoundError only on release build

Answer 1

minifyEnabled 和 shr​​inkResources 在您的 build.gradle 文件中非常重要，如果您想减少特定构建类型(最好是“发布”类型)生成的 apk 的大小.

minifyEnabled 通过删除未使用的代码和引用来缩减代码。

shr​​inkResources 另一方面，从/res 文件夹中删除未在代码中引用的未使用的资源文件。

你必须使用这个代码

res = getResources().getIdentifier(filter_none, "string", getPackageName());

代替

R.string.filter_none

现在，如果您使用 Resources.getIdentifier() 动态引用资源该方法由于未引用的资源被删除，将发生意外行为。

因此，为避免这种情况，当动态访问资源时，请使用此技巧，如 Android User Guide 中所述。使用这个例子

String name = String.format("img_%1d", angle + 1);
res = getResources().getIdentifier(name, "drawable", getPackageName());