当minifyEnable设置为true时，应用程序在特定布局上崩溃

Question

-assumenosideeffects class android.util.Log {
    public static *** d(...);
}

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {
    compileSdkVersion 28

    defaultConfig {
        applicationId "my.package.id"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 3
        versionName "0.3"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
        vectorDrawables.useSupportLibrary = true
    }

    buildTypes {
        debug {
            minifyEnabled true
            debuggable true
        }
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'),
                    'proguard-rules.pro'
        }
    }
    compileOptions {
        targetCompatibility 1.8
        sourceCompatibility 1.8
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    //  Testing
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'

    //  Support library
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha2'
    implementation 'com.google.android.material:material:1.1.0-alpha01'
    implementation 'androidx.vectordrawable:vectordrawable:1.0.1'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'

    //  Architecture components
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'

    //  Ads
    implementation 'com.google.android.gms:play-services-ads:17.1.2'

    //  Firebase
    implementation 'com.google.firebase:firebase-core:16.0.6'
    implementation 'com.google.firebase:firebase-firestore:17.1.3'
    implementation 'com.google.firebase:firebase-auth:16.0.5'
    implementation 'com.google.firebase:firebase-invites:16.0.6'
    implementation 'com.google.firebase:firebase-dynamic-links:16.1.5'

    //  FirebaseUI for Firebase Auth
    implementation 'com.firebaseui:firebase-ui-auth:4.2.0'

    //  Circular imageView
    implementation 'com.mikhaellopez:circularimageview:3.2.0'
    implementation 'de.hdodenhof:circleimageview:2.2.0'

    //  About libraries
    implementation 'com.mikepenz:aboutlibraries:6.2.0'
}

viewHolder.userOrderRecyclerViewItemDateTv.setText(MyDateUtils.getDateStringFromLong(Long.parseLong(order.getOrderDate())));

mydateutils.java：

public class MyDateUtils {

    private static String calenderToDateString(Calendar calendar) {

        //  Convert calender object to date string
        return String.format(Locale.ENGLISH, "%02d - %02d - %04d",
                (calendar.get(Calendar.DAY_OF_MONTH)), (calendar.get(Calendar.MONTH) + 1),
                calendar.get(Calendar.YEAR));
    }

    public static String getDateStringFromLong(long dateLong) {

        //  Create a new calender instance
        Calendar calendar = Calendar.getInstance();

        //  Set calender time to given value
        calendar.setTimeInMillis(dateLong);

        //  Return calender as date in string format
        return calenderToDateString(calendar);
    }
}

Answer 1

可以通过对任何生成类型使用minifyEnabled选项来启用ProGuard。如果您打算在生产中使用它，强烈建议您在上线测试之前也在开发中启用它（一次）。如果没有在您的开发构建中充分测试ProGuard，您可能会遇到意外的崩溃或应用程序不能按预期运行的情况。

您似乎没有为在build.gradle文件中使用的库添加规则

https://guides.codepath.com/android/configuring-proguard