当我的应用程序崩溃时，我收到了这个错误。 我确实为这个错误找到了一些答案，但没有一个有效。
它有时发生在我运行应用程序时它会粉碎，有时候我点击一个Btn ......
这里是完整的错误：
10-22 18:19:09.000 17119-17119/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.natali.cooktogther, PID: 17119
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/internal/zzac;
at com.google.firebase.storage.FirebaseStorage.getInstance(Unknown Source)
at com.example.natali.cooktogther.PostActivity.onCreate(PostActivity.java:43)
at android.app.Activity.performCreate(Activity.java:6272)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494)
at android.app.ActivityThread.access$900(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1356)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5527)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.common.internal.zzac" on path: DexPathList[[zip file "/data/app/com.example.natali.cooktogther-2/base.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.natali.cooktogther-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.natali.cooktogther-2/lib/arm, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at com.google.firebase.storage.FirebaseStorage.getInstance(Unknown Source)
at com.example.natali.cooktogther.PostActivity.onCreate(PostActivity.java:43)
at android.app.Activity.performCreate(Activity.java:6272)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494)
at android.app.ActivityThread.access$900(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1356)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5527)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.common.internal.zzac
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 15 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
编辑：Gradle文件：
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example.natali.cooktogther"
minSdkVersion 21
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.google.firebase:firebase-auth:10.0.1'
compile 'com.google.firebase:firebase-database:10.0.1'
compile 'com.google.firebase:firebase-storage:10.0.1'
compile 'com.firebaseui:firebase-ui-database:2.0.0'
compile 'com.theartofdev.edmodo:android-image-cropper:2.3.+'
compile 'com.android.support:cardview-v7:25.+'
compile 'com.android.support:recyclerview-v7:25.+'
testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'
如果需要更多我会添加...... 谢谢大家帮忙...... ：d