Android spinner在真实设备（Apk）上运行时不显示项目

当我在android studio emulator或智能手机调试模式下测试我的应用程序时，一切正常

因此，当我生成一个APK文件来分发我的应用程序时，它不会在微调器中显示项目列表，并且我不能选择任何项目

这是我使用微调器布局的一部分

<com.weiwangcn.betterspinner.library.material.MaterialBetterSpinner
        android:id="@+id/plantType"
        android:layout_width="250dp"
        android:layout_height="wrap_content"
        android:hint="@string/seleziona_plant_type"
        app:met_floatingLabel="normal"
        android:layout_marginTop="8dp"
        app:layout_constraintTop_toBottomOf="@+id/imagePlant"
        android:layout_marginLeft="8dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginRight="8dp"
        app:layout_constraintRight_toRightOf="parent" />

这是appcombat-v7库上的错误

All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 24.0.0, 23.2.1. Examples include com.android.support:animated-vector-drawable:24.0.0 and com.android.support:design:23.2.

这是我的proguard-rules.pro

# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /home/claudio/Android/Sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}

---

一些建议？

检查许可证如果您正在从存储器将数据加载到spinner中，因为您可能会在较低的API上启动应用程序，并且您的设备的API与emulator不同或更高。

您是否使用任何第三方spinner库？@Nithinlal我正在使用此许可证，当您更新问题时得到它检查此许可证可能会有帮助。我不知道你是如何实现代码微调器的，这样我就可以过滤掉问题。你的程序是什么。这将是proguard问题如果有用户权限，它将与设备和模拟器中的相同，我认为是这样。无论如何，尝试低于21的api级别不需要运行时权限高于21的api级别，您将需要在运行时请求权限问题不关权限，我正在使用正确的方法来管理此问题。

# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /home/claudio/Android/Sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
#   http://developer.android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;
#}