android.os.TransactionTooLargeException解决方案，Kotlin-编程知识

android.os.TransactionTooLargeException解决方案，Kotlin

首先，特意制造一个让Android发生TransactionTooLargeException的场景，一个Activity启动另外一个Activity，在Intent的Bundle里面塞入一个大的ArrayList:

import android.content.Intent
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import java.nio.charset.Charsetclass MainActivity : AppCompatActivity() {companion object {const val MY_KEY = "my_key"const val MY_BUNDLE = "my_bundle"}override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)val ctx = thisCoroutineScope(Dispatchers.IO).launch {val bytes = "z".toByteArray(Charset.defaultCharset())val count = 1024 * 1024val list = arrayListOf<ByteArray>()for (i in 0..count) {list.add(bytes)}val bundle = Bundle()bundle.putSerializable(MY_KEY, list)CoroutineScope(Dispatchers.Main).launch {val intent = Intent(ctx, MyTestActivity::class.java)intent.putExtra(MY_BUNDLE, bundle)startActivity(intent)}}}
}

被启动的MyTestActivity:

import android.os.Bundle
import android.util.Log
import androidx.appcompat.app.AppCompatActivityclass MyTestActivity : AppCompatActivity() {override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)val bundle = intent.getBundleExtra(MainActivity.MY_BUNDLE)Log.d("fly", "MyTestActivity onCreate size=${bundle?.getSerializable(MainActivity.MY_KEY, ArrayList::class.java)?.size}")}
}

MainActivity运行起来后，应用直接崩溃抛错：

!!! FAILED BINDER TRANSACTION !!! (parcel size = 12583376）

Caused by: android.os.TransactionTooLargeException: data parcel size 12583376 bytes

因为Bundle传输的数据总量大小不能超过1MB，且应用内的Activity/Frgment共享这1MB。

解决方案

两边改造，换用Binder，参考（ Android Bundle putBinder传输超过1MB数据，Kotlin-CSDN博客）：

import android.content.Intent
import android.os.Binder
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import java.nio.charset.Charsetclass MainActivity : AppCompatActivity() {companion object {const val MY_KEY = "my_key"const val MY_BUNDLE = "my_bundle"}override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)val ctx = thisCoroutineScope(Dispatchers.IO).launch {val bytes = "z".toByteArray(Charset.defaultCharset())val count = 1024 * 1024val list = arrayListOf<ByteArray>()for (i in 0..count) {list.add(bytes)}val bundle = Bundle()bundle.putBinder(MY_KEY, MyBinder(list))CoroutineScope(Dispatchers.Main).launch {val intent = Intent(ctx, MyTestActivity::class.java)intent.putExtra(MY_BUNDLE, bundle)startActivity(intent)}}}
}class MyBinder : Binder {private var data: ArrayList<ByteArray>? = nullconstructor(data: ArrayList<ByteArray>?) {this.data = data}fun getData(): ArrayList<ByteArray>? {return data}
}

import android.os.Bundle
import android.util.Log
import androidx.appcompat.app.AppCompatActivityclass MyTestActivity : AppCompatActivity() {override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)val bundle = intent.getBundleExtra(MainActivity.MY_BUNDLE)val binder = bundle?.getBinder(MainActivity.MY_KEY) as MyBinderLog.d("fly", "MyTestActivity onCreate size=${binder.getData()?.size}")}
}

MainActivity启动后，MyTestActivity成功收到通过Bundle传输的超大数据集：

Android TransactionTooLargeException排查定位-CSDN博客文章浏览阅读724次，点赞10次，收藏20次。文章浏览阅读422次。文章浏览阅读5.5k次。本文作者：Zhang Phil原文链接：Android Activity生命周期以及onSaveInstanceState、onRestoreInstanceState要点备忘一般的，当Android activity的生命周期进入onPause后，Android系统紧接着就要回调：protected void onSaveInstanceState_activity生命周期 onsaveinstane。https://blog.csdn.net/zhangphil/article/details/136745278