Caused by: java.lang.IllegalStateException: No DB catalog present

Code:

val file = File(SDCardUtils.getSDCardPathByEnvironment() + "/CustomFile/dbFile")
if (!file.exists()) {
file.exists()
}
MyObjectBox.builder()
.androidContext(context.applicationContext)
.directory(file)
.build()

Error:

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3909)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4062)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:101)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2415)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:211)
at android.os.Looper.loop(Looper.java:300)
at android.app.ActivityThread.main(ActivityThread.java:8401)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)
Caused by: java.lang.IllegalStateException: No DB catalog present
at io.objectbox.BoxStore.nativeCreateWithFlatOptions(Native Method)
at io.objectbox.BoxStore.(BoxStore.java:271)
at io.objectbox.BoxStoreBuilder.build(BoxStoreBuilder.java:591)

从 MyObjectBox.builder() 入口开始，检查 SDCardUtils.getSDCardPathByEnvironment() 的结果、传递给 .directory(file) 的目录以及报告的堆栈跟踪。如果可能，重现 Android 启动失败，并记录 “No DB catalog present” 错误经验证的原因和修复方法。