[1.4.0-optimize] 代码优化

Author: crazyqiang

app/src/main/java/org/ninetripods/mq/study/jetpack/datastore/ktx/DataStoreKt.kt

@@ -36,6 +36,7 @@ val Context.bookDataStorePt: DataStore<BookProto.Book> by dataStore(
                 context,
                 BOOK_PREFERENCES_NAME
             ) { sharedPrefs: SharedPreferencesView, currentData: BookProto.Book ->
+                //从SP中取出数据
                 val bookName: String = sharedPrefs.getString(KEY_BOOK_NAME, "") ?: ""
                 val bookPrice: Float = sharedPrefs.getFloat(KEY_BOOK_PRICE, 0f)
 
@@ -52,5 +53,4 @@ val Context.bookDataStorePt: DataStore<BookProto.Book> by dataStore(
             }
         )
     }
-
 )

app/src/main/java/org/ninetripods/mq/study/jetpack/datastore/proto/BookSerializer.kt

@@ -1,20 +1,24 @@
 package org.ninetripods.mq.study.jetpack.datastore.proto
 
+import androidx.datastore.core.CorruptionException
 import androidx.datastore.core.Serializer
+import com.google.protobuf.InvalidProtocolBufferException
 import org.ninetripods.mq.study.BookProto
 import java.io.InputStream
 import java.io.OutputStream
 
 object BookSerializer : Serializer<BookProto.Book> {
+    override val defaultValue: BookProto.Book = BookProto.Book.getDefaultInstance()
 
     override suspend fun readFrom(input: InputStream): BookProto.Book {
-        return BookProto.Book.parseFrom(input)
+        try {
+            return BookProto.Book.parseFrom(input)
+        } catch (exception: InvalidProtocolBufferException) {
+            throw CorruptionException("Cannot read proto.", exception)
+        }
     }
 
     override suspend fun writeTo(t: BookProto.Book, output: OutputStream) {
         t.writeTo(output)
     }
-
-    override val defaultValue: BookProto.Book = BookProto.Book.getDefaultInstance()
-
 }

lib_protobuf/build.gradle

@@ -32,6 +32,9 @@ android {
             //protoc版本参见：https://repo1.maven.org/maven2/com/google/protobuf/protoc/
             artifact = "com.google.protobuf:protoc:3.18.0"
         }
+        // Generates the java Protobuf-lite code for the Protobufs in this project. See
+        // https://github.com/google/protobuf-gradle-plugin#customizing-protobuf-compilation
+        // for more information.
         generateProtoTasks {
             all().each { task ->
                 task.builtins {