Question

达到65k方法限制后，Kotlin的View Binding扩展会停止工作，并在引用视图时抛出NullPointerException。

我尝试安装MultiDex，但它没有解决问题。

我正在使用Android API 25，不使用ProGuard并编译调试风格。我能做什么？

以下是错误的示例

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: com.jj.pos, PID: 5906
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jj.pos/com.jj.pos.features.authentication.LoginActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
                      at android.app.ActivityThread.-wrap12(ActivityThread.java)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:154)
                      at android.app.ActivityThread.main(ActivityThread.java:6119)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
                   Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
                      at com.jj.pos.features.authentication.GoogleAuthenticator.loadBusinessAndGoToMainActivity(GoogleAuthenticator.kt:42)
                      at com.jj.pos.features.authentication.GoogleAuthenticator.<init>(GoogleAuthenticator.kt:35)
                      at com.jj.pos.features.authentication.LoginActivity.onCreate(LoginActivity.kt:18)
                      at android.app.Activity.performCreate(Activity.java:6720)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
                      at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:154) 
                      at android.app.ActivityThread.main(ActivityThread.java:6119) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

这是我的build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.jj.pos"
        minSdkVersion 23
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"

    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

    // Additional android libraries
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:support-v4:26.1.0'
    implementation 'com.android.support:design:26.1.0'
    implementation 'com.android.support:recyclerview-v7:26.1.0'

    // MultiDex
    implementation 'com.android.support:multidex:1.0.2'

    // Memory leaks
    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5.4'
    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'

    // Firebase
    implementation 'com.google.firebase:firebase-auth:11.6.2'
    implementation 'com.google.android.gms:play-services-auth:11.6.2'
    implementation 'com.google.firebase:firebase-firestore:11.6.2'
    implementation 'com.google.firebase:firebase-crash:11.6.2'

    // RxJava
//    implementation 'io.reactivex.rxjava2:rxjava:2.1.7'
    implementation 'io.reactivex.rxjava2:rxkotlin:2.2.0'
    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'

    // Images loader and cache
    implementation 'com.squareup.picasso:picasso:2.5.2'

    // Decent datetime API
    implementation 'joda-time:joda-time:2.9.9'

    // Animations
    compile 'com.android.support:support-compat:26.1.0'
    compile 'com.daimajia.easing:library:2.0@aar'
    compile 'com.daimajia.androidanimations:library:2.3@aar'

    // UI
    compile 'com.github.markushi:circlebutton:1.1' // -- FAB

    implementation project(':btsdk')
    implementation project(':zixng')
}


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

这是我的应用程序实现

class App : Application() {

    override fun onCreate() {
        super.onCreate()

        MultiDex.install(this)

        // Other configs like LeakCanary, Firestore and RxJavaErrorHandler
    }

}

Answer 1

清理项目解决了这个问题。

Kotlin的View绑定扩展在65k方法限制后停止工作

1 个答案: