Android 生成的apk崩溃

我刚刚完成我的上一个android项目，但我面临一个奇怪的问题。一直以来，我都在使用这个应用程序，我总是通过点击那个绿色按钮在我的设备上运行它，它工作得很好。但现在我已经创建了我的应用程序的apk文件，它可以毫无问题地安装在设备上，但在我想启动应用程序时，它崩溃了，再也无法启动

任何帮助都将不胜感激。谢谢

更新：依赖项：

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:support-vector-drawable:26.1.0'
implementation 'com.android.support:preference-v14:26.1.0'
implementation 'com.github.codekidX:storage-chooser:2.0.4.2'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.3'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'android.arch.lifecycle:viewmodel:1.1.1'
implementation 'android.arch.lifecycle:extensions:1.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.android.support:cardview-v7:26.1.0'

private class MyImageViewModel: ViewModel(){
    fun returnImagePath(): String{
        return createdImageFile
        //createdImageFile is a global string that contains the path of an image and its default value is ""
    }
}

val model = ViewModelProviders.of(this).get(MyImageViewModel::class.java)
    createdImageFile = model.returnImagePath()
    if (createdImageFile != ""){
        //do sth with the image file path
    }

视图模型类：

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:support-vector-drawable:26.1.0'
implementation 'com.android.support:preference-v14:26.1.0'
implementation 'com.github.codekidX:storage-chooser:2.0.4.2'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.3'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'android.arch.lifecycle:viewmodel:1.1.1'
implementation 'android.arch.lifecycle:extensions:1.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.android.support:cardview-v7:26.1.0'

private class MyImageViewModel: ViewModel(){
    fun returnImagePath(): String{
        return createdImageFile
        //createdImageFile is a global string that contains the path of an image and its default value is ""
    }
}

val model = ViewModelProviders.of(this).get(MyImageViewModel::class.java)
    createdImageFile = model.returnImagePath()
    if (createdImageFile != ""){
        //do sth with the image file path
    }

视图模型用法：

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:support-vector-drawable:26.1.0'
implementation 'com.android.support:preference-v14:26.1.0'
implementation 'com.github.codekidX:storage-chooser:2.0.4.2'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.3'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'android.arch.lifecycle:viewmodel:1.1.1'
implementation 'android.arch.lifecycle:extensions:1.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.android.support:cardview-v7:26.1.0'

private class MyImageViewModel: ViewModel(){
    fun returnImagePath(): String{
        return createdImageFile
        //createdImageFile is a global string that contains the path of an image and its default value is ""
    }
}

val model = ViewModelProviders.of(this).get(MyImageViewModel::class.java)
    createdImageFile = model.returnImagePath()
    if (createdImageFile != ""){
        //do sth with the image file path
    }

---

解决方案：

implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:support-vector-drawable:26.1.0'
implementation 'com.android.support:preference-v14:26.1.0'
implementation 'com.github.codekidX:storage-chooser:2.0.4.2'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.3'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'android.arch.lifecycle:viewmodel:1.1.1'
implementation 'android.arch.lifecycle:extensions:1.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.android.support:cardview-v7:26.1.0'

private class MyImageViewModel: ViewModel(){
    fun returnImagePath(): String{
        return createdImageFile
        //createdImageFile is a global string that contains the path of an image and its default value is ""
    }
}

val model = ViewModelProviders.of(this).get(MyImageViewModel::class.java)
    createdImageFile = model.returnImagePath()
    if (createdImageFile != ""){
        //do sth with the image file path
    }

而不是：

val model = ViewModelProviders.of(this).get(MyImageViewModel::class.java)

写：

var model: MyImageViewModel()

那么

---

试试看，希望它能起作用。

感谢所有试图帮助我的人，我发现了这个问题。这是一件很愚蠢的事。ViewModel类不应是私有的！就是这样。

在发布apk时，您选择了v1和v2吗？@UmangBurman我选择了两个选项：将手机连接到笔记本电脑，打开android studio，然后启动安装在手机上的应用程序，检查logcat有什么要说的，然后在这里发布。@Robert谢谢您的评论，但这并没有解决问题problem@UmangBurman谢谢你花了这么多时间，伙计。看看我的回答没什么对不起changed@Soroush对不起，我没有这样的错误。。事实上，我用了你的代码，你的依赖，所有的东西。应用程序运行良好。我的设备Moto X Play。我制作了apk，在内部存储中复制，安装时打开良好。@Soroush尝试一下：“'implementation'android.arch.lifecycle:viewmodel:1.1.1'-ktx implementation'android.arch.lifecycle:extensions:1.1.1'-ktx”很好。。。它在我的设备中是如何工作的？你能回答这个问题吗？好吧，恭喜它成功了，但我不认为初始化取决于私有或公共。不管怎样，我在其他主题中也看到过。哦，好吧，也许我在我的应用程序中实现了公共类。。我想我没有注意到。