小编RiR*_*iRi的帖子

我的应用程序一直崩溃,但我无法弄清楚为什么.有人可以告诉我

我的Gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.securitytechno2018"
        minSdkVersion 16
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard- 
   android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets {
        main { java.srcDirs = ['src/main/java', 
'src/main/java/com/securitytechno2018/listeners'] }
    }
}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.0.0'
implementation 'com.android.support:cardview-v7:27.0.0'
implementation 'com.android.support:design:27.0.0'
implementation 'com.android.support:recyclerview-v7:27.0.0'
implementation 'com.google.firebase:firebase-database:11.8.0'
implementation 'com.google.firebase:firebase-storage:11.8.0'
implementation 'com.google.firebase:firebase-auth:11.8.0'
implementation 'com.firebaseui:firebase-ui-database:3.2.1'
implementation 'com.squareup.picasso:picasso:2.5.2'
implementation 'com.google.android.gms:play-services-maps:11.8.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1' …