And*_*rew 7 android kotlin android-room
我的问题是，我的应用程序突然崩溃，我不知道为什么。这种情况发生不规律，但我认为这与我的房间数据库有关。我尝试提供尽可能多的信息：
@Database(entities = [ProductCacheEntity::class], version = 1)
@TypeConverters(Converters::class)
abstract class ShoppingCartDatabase : RoomDatabase() {
abstract fun shopDao(): ShoppingCartDao
companion object {
const val DATABASE_NAME = "shop_db"
}
}
@Dao
interface ShoppingCartDao {
@Insert(onConflict = OnConflictStrategy.IGNORE)
suspend fun insert(productCacheEntity: ProductCacheEntity): Long
@Transaction
suspend fun upsert(productCacheEntity: ProductCacheEntity) {
val id = insert(productCacheEntity)
if (productExists(id)) increaseQuantityById(productCacheEntity.id)
}
@Query("UPDATE products SET quantity = quantity + 1 WHERE ID = :id")
suspend fun increaseQuantityById(id: Int)
@Query("UPDATE products SET quantity = quantity - 1 WHERE ID = :id")
suspend fun decreaseQuantityById(id: Int)
@Query("DELETE FROM products WHERE id = :id")
suspend fun deleteProductById(id: Int)
@Query("SELECT * FROM products")
fun getAllProducts(): LiveData<List<ProductCacheEntity>>
@Query("SELECT SUM(price * quantity) FROM products")
fun getSummedPrice(): LiveData<Float>
private fun productExists(id: Long): Boolean = id == -1L
}
@AndroidEntryPoint
class ShoppingCartFragment(
private val shoppingCartAdapter: ShoppingCartListAdapter,
private val cacheMapper: ShopCacheMapper
) : Fragment(R.layout.fragment_shopping_cart), ShoppingCartListAdapter.OnItemClickListener {
private val shoppingCartViewModel: ShoppingCartViewModel by viewModels()
private val shoppingCartBinding: FragmentShoppingCartBinding by viewBinding()
// private val shoppingCartAdapter = ShoppingCartListAdapter()
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
shoppingCartAdapter.clickHandler(this)
bindObjects()
observeList()
}
private fun observeList() {
shoppingCartViewModel.productList.observe(viewLifecycleOwner, shoppingCartAdapter::submitList)
}
private fun bindObjects() = with(shoppingCartBinding) {
adapter = shoppingCartAdapter
viewModel = shoppingCartViewModel
lifecycleOwner = viewLifecycleOwner
}
override fun forwardCardClick(productCacheEntity: ProductCacheEntity) {
val product = cacheMapper.mapFromEntity(productCacheEntity)
val action = ShoppingCartFragmentDirections.actionShoppingCartFragmentToShopItemFragment(product)
findNavController().navigate(action)
}
override fun fordwardBtnIncreaseClick(id: Int) {
shoppingCartViewModel.increaseProductQuantityById(id)
}
override fun fordwardBtnDecreaseClick(id: Int) {
shoppingCartViewModel.decreaseProductQuantityById(id)
}
override fun forwardBtnDeleteClick(id: Int) {
shoppingCartViewModel.deleteProductById(id)
}
override fun onDestroyView() {
requireView().findViewById<RecyclerView>(R.id.rv_shopping_cart).adapter = null
super.onDestroyView()
}
class ShoppingCartListAdapter @Inject constructor() : ListAdapter<ProductCacheEntity, ShoppingCartListAdapter.ProductViewHolder>(Companion) {
private lateinit var clickListener: OnItemClickListener
companion object: DiffUtil.ItemCallback<ProductCacheEntity>() {
override fun areItemsTheSame(oldItem: ProductCacheEntity, newItem: ProductCacheEntity): Boolean = oldItem.id == newItem.id
override fun areContentsTheSame(oldItem: ProductCacheEntity, newItem: ProductCacheEntity): Boolean = oldItem == newItem
}
inner class ProductViewHolder(val binding: ShoppingCartListItemBinding): RecyclerView.ViewHolder(binding.root)
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ProductViewHolder {
val layoutInflater = LayoutInflater.from(parent.context)
val binding = ShoppingCartListItemBinding.inflate(layoutInflater, parent, false)
return ProductViewHolder(binding).also {
with(binding) {
ivProduct.setOnClickListener { clickListener.forwardCardClick(binding.product!!) }
tvTitle.setOnClickListener { clickListener.forwardCardClick(binding.product!!) }
btnIncrease.setOnClickListener { clickListener.fordwardBtnIncreaseClick(binding.product!!.id) }
btnDecrease.setOnClickListener { clickListener.fordwardBtnDecreaseClick(binding.product!!.id) }
btnDelete.setOnClickListener { clickListener.forwardBtnDeleteClick(binding.product!!.id) }
}
}
}
override fun onBindViewHolder(holder: ProductViewHolder, position: Int) {
val currentProduct = getItem(position) ?: return
holder.binding.product = currentProduct
holder.binding.btnDecrease.isEnabled = currentProduct.quantity > 1
holder.binding.executePendingBindings()
}
interface OnItemClickListener {
fun forwardCardClick(productCacheEntity: ProductCacheEntity)
fun fordwardBtnIncreaseClick(id: Int)
fun fordwardBtnDecreaseClick(id: Int)
fun forwardBtnDeleteClick(id: Int)
}
fun clickHandler(clickEventHandler: OnItemClickListener) {
clickListener = clickEventHandler
}
}
class ShopItemViewModel @ViewModelInject constructor(
private val shopCacheMapper: ShopCacheMapper,
private val shoppingCartDB: ShoppingCartDao
) : ViewModel() {
fun insertOrUpdateProduct(product: Product) = viewModelScope.launch {
val cacheEntity = shopCacheMapper.mapToEntity(product)
shoppingCartDB.upsert(cacheEntity)
}
}
class ShoppingCartViewModel @ViewModelInject constructor(
private val shopDB: ShoppingCartDao
): ViewModel() {
val productList: LiveData<List<ProductCacheEntity>> = shopDB.getAllProducts()
val summedPrice: LiveData<Float> = shopDB.getSummedPrice()
fun increaseProductQuantityById(id: Int) = viewModelScope.launch {
shopDB.increaseQuantityById(id)
}
fun decreaseProductQuantityById(id: Int) = viewModelScope.launch {
shopDB.decreaseQuantityById(id)
}
fun deleteProductById(id: Int) = viewModelScope.launch {
shopDB.deleteProductById(id)
}
}
--------- beginning of crash
2020-10-16 13:09:08.638 11560-11669/com.example.app A/libc: Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x40 in tid 11669 (Thread-5), pid 11560 (com.example.app)
2020-10-16 13:09:08.678 11707-11707/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2020-10-16 13:09:08.678 11707-11707/? A/DEBUG: Build fingerprint: 'google/sdk_gphone_x86/generic_x86:10/QSR1.200715.002/6695061:userdebug/dev-keys'
2020-10-16 13:09:08.678 11707-11707/? A/DEBUG: Revision: '0'
2020-10-16 13:09:08.678 11707-11707/? A/DEBUG: ABI: 'x86'
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: Timestamp: 2020-10-16 11:09:08+0000
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: pid: 11560, tid: 11669, name: Thread-5 >>> com.example.app <<<
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: uid: 10133
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x40
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: Cause: null pointer dereference
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: Abort message: 'Check failed: throw_dex_pc < accessor.InsnsSizeInCodeUnits() (throw_dex_pc=21634, accessor.InsnsSizeInCodeUnits()=0) '
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: eax 00000000 ebx ecfeea74 ecx edfee140 edx f181b801
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: edi bfe10c88 esi d8b6a8a0
2020-10-16 13:09:08.679 11707-11707/? A/DEBUG: ebp bfe10a38 esp bfe109f0 eip ecf0ec29
2020-10-16 13:09:08.735 11707-11707/? A/DEBUG: backtrace:
2020-10-16 13:09:08.735 11707-11707/? A/DEBUG: NOTE: Function names and BuildId information is missing for some frames due
2020-10-16 13:09:08.735 11707-11707/? A/DEBUG: NOTE: to unreadable libraries. For unwinds of apps, only shared libraries
2020-10-16 13:09:08.735 11707-11707/? A/DEBUG: NOTE: found under the lib/ directory are readable.
2020-10-16 13:09:08.735 11707-11707/? A/DEBUG: NOTE: On this device, run setenforce 0 to make the libraries readable.
2020-10-16 13:09:08.735 11707-11707/? A/DEBUG: #00 pc 005c5c29 /apex/com.android.runtime/lib/libart.so (art::StackDumpVisitor::StartMethod(art::ArtMethod*, unsigned int)+41) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #01 pc 00491ec0 /apex/com.android.runtime/lib/libart.so (art::MonitorObjectsStackVisitor::VisitFrame()+80) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #02 pc 0058c8f8 /apex/com.android.runtime/lib/libart.so (_ZN3art12StackVisitor9WalkStackILNS0_16CountTransitionsE0EEEvb+2008) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #03 pc 005b6bfe /apex/com.android.runtime/lib/libart.so (art::Thread::DumpJavaStack(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, bool, bool) const+1022) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #04 pc 005b1fe9 /apex/com.android.runtime/lib/libart.so (art::Thread::DumpStack(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, bool, BacktraceMap*, bool) const+1017) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #05 pc 005ace61 /apex/com.android.runtime/lib/libart.so (art::Thread::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, bool, BacktraceMap*, bool) const+65) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #06 pc 005d2cd1 /apex/com.android.runtime/lib/libart.so (art::DumpCheckpoint::Run(art::Thread*)+929) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.736 11707-11707/? A/DEBUG: #07 pc 005cb034 /apex/com.android.runtime/lib/libart.so (art::ThreadList::RunCheckpoint(art::Closure*, art::Closure*)+1556) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #08 pc 005c9be4 /apex/com.android.runtime/lib/libart.so (art::ThreadList::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, bool)+1620) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #09 pc 005796f0 /apex/com.android.runtime/lib/libart.so (art::AbortState::DumpAllThreads(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, art::Thread*) const+448) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #10 pc 00564d30 /apex/com.android.runtime/lib/libart.so (art::Runtime::Abort(char const*)+1536) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #11 pc 000249b3 /apex/com.android.runtime/lib/libartbase.so (_ZNSt3__110__function6__funcIPFvPKcENS_9allocatorIS5_EES4_EclEOS3_+35) (BuildId: b3a3a0a741f44556d02d009140734527)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #12 pc 0000bac7 /system/lib/libbase.so (android::base::LogMessage::~LogMessage()+727) (BuildId: e6c80e0dfebf299cd41f1c732ad018a9)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #13 pc 001b85bc /apex/com.android.runtime/lib/libart.so (art::ThrowNullPointerExceptionFromDexPC(bool, unsigned int)+499) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #14 pc 00331cf1 /apex/com.android.runtime/lib/libart.so (art::interpreter::ThrowNullPointerExceptionFromInterpreter()+33) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #15 pc 0034055a /apex/com.android.runtime/lib/libart.so (void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*)+31834) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #16 pc 00145b52 /apex/com.android.runtime/lib/libart.so (ExecuteSwitchImplAsm+18) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #17 pc 0000170c [anon:dalvik-/system/framework/framework.jar-transformed-transformed-transformed-transformed]
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #18 pc 002f8f92 /apex/com.android.runtime/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.1175793267244191248+690) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #19 pc 002ffe19 /apex/com.android.runtime/lib/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+217) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #20 pc 0032c17e /apex/com.android.runtime/lib/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+958) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #21 pc 0033edd3 /apex/com.android.runtime/lib/libart.so (void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*)+25811) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #22 pc 00145b52 /apex/com.android.runtime/lib/libart.so (ExecuteSwitchImplAsm+18) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #23 pc 0032f624 /system/framework/framework.jar (android.database.AbstractCursor.moveToPosition)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #24 pc 002f8f92 /apex/com.android.runtime/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.1175793267244191248+690) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #25 pc 002ffe19 /apex/com.android.runtime/lib/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+217) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #26 pc 0032c17e /apex/com.android.runtime/lib/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+958) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #27 pc 0033edd3 /apex/com.android.runtime/lib/libart.so (void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*)+25811) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #28 pc 00145b52 /apex/com.android.runtime/lib/libart.so (ExecuteSwitchImplAsm+18) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #29 pc 0032f600 /system/framework/framework.jar (android.database.AbstractCursor.moveToNext)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #30 pc 002f8f92 /apex/com.android.runtime/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.1175793267244191248+690) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #31 pc 002ffe19 /apex/com.android.runtime/lib/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+217) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #32 pc 0032c17e /apex/com.android.runtime/lib/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+958) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #33 pc 0033ee45 /apex/com.android.runtime/lib/libart.so (void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*)+25925) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #34 pc 00145b52 /apex/com.android.runtime/lib/libart.so (ExecuteSwitchImplAsm+18) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #35 pc 0002834c [anon:dalvik-classes.dex extracted in memory from /data/local/tmp/perfd/sqlite-inspection.jar] (androidx.sqlite.inspection.SqliteInspector.querySchema)
2020-10-16 13:09:08.737 11707-11707/? A/DEBUG: #36 pc 002f8f92 /apex/com.android.runtime/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.1175793267244191248+690) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #37 pc 002ffe19 /apex/com.android.runtime/lib/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+217) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #38 pc 0032c17e /apex/com.android.runtime/lib/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+958) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #39 pc 0033b651 /apex/com.android.runtime/lib/libart.so (void art::interpreter::ExecuteSwitchImplCpp<false, false>(art::interpreter::SwitchImplContext*)+11601) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #40 pc 00145b52 /apex/com.android.runtime/lib/libart.so (ExecuteSwitchImplAsm+18) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #41 pc 00028010 [anon:dalvik-classes.dex extracted in memory from /data/local/tmp/perfd/sqlite-inspection.jar] (androidx.sqlite.inspection.SqliteInspector.handleGetSchema)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #42 pc 002f8f92 /apex/com.android.runtime/lib/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEbb.llvm.1175793267244191248+690) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #43 pc 002ffe19 /apex/com.android.runtime/lib/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+217) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #44 pc 0032c17e /apex/com.android.runtime/lib/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+958) (BuildId: fe49ff2b6f401678e4775fb2121e4ea4)
2020-10-16 13:09:08.738 11707-11707/? A/DEBUG: #45 pc 0033b651 /apex/com.android.runtime/lib/libart.so (voi
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