LanderlYoung

ArrayMap ClassCastException Deep Analyze

preface

I'm a developer of 企鹅FM. Our app constantly report ClassCastException on ArrayMap, some stack trace looks like this.

Intent i = new Intent(ACTION);
i.putExtra(KEY, VALUE); // crashes here

LanderlYoung

#!/usr/bin/env python
# encoding: utf-8

from __future__ import print_function

'''
analyze /proc/<pid>/smaps

doc
http://liutaihua.github.io/2013/04/25/process-smaps-analysis.html

LanderlYoung

Installing and running shadowsocks on Ubuntu Server

16.10 yakkety and above

1. Install the the shadowsocks-libev package from apt repository.

    sudo apt update
    sudo apt install shadowsocks-libev
   

2. Save ss.json as /etc/shadowsocks-libev/config.json.

LanderlYoung

ADB=${ANDROID_HOME}/platform-tools/adb
HPROF_CONV=${ANDROID_HOME}/platform-tools/hprof-conv

# customized functions
# dump droid heap
function droid_hd() {
    PACKAGE_NAME=$1

    TIME=$(date +"%Y%m%d_%H%M%S")
    FILE_NAME="${PACKAGE_NAME}-${TIME}-heap.hprof"

LanderlYoung

class ViewModel_1 {
    val name = LiveData<String>()
    val gender = LiveData<Boolean>()
    val loading = LiveData<Boolean>()

    val errorMessage = LiveEvent<String>()

    fun follow() {
        api.follow(xxx)
    }

LanderlYoung

sealed class LiveEvent<T> : LiveData<T>() {
    private var version = 0

    /**
     *  override hashCode and equals,
     *  so-that, [LiveData.removeObserver] still can work
     */
    private inner class ObserverWrapper<T>(
        private val other: Observer<T>
    ) : Observer<T> {

LanderlYoung

String httpGet(String url) throws IOException {
    URL u = new URL(url);
    URLConnection conn = u.openConnection();
    InputStream input = conn.getInputStream();

    byte[] buffer = new byte[1024];
    int len = input.read(buffer);
    input.close();

    return new String(buffer, 0, len);

LanderlYoung

/*
 * Copyright (C) 2018 Square, Inc.
 * Copyright (C) 2019 taylorcyang@tencent.com
 * Copyright (C) 2019 landerlyoung@gmail.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0

LanderlYoung

#! /usr/bin/env kscript


@file:DependsOn("com.xenomachina:kotlin-argparser:2.0.7")
@file:DependsOn("me.tongfei:progressbar:0.7.1")

import com.xenomachina.argparser.ArgParser
import com.xenomachina.argparser.InvalidArgumentException
import com.xenomachina.argparser.SystemExitException
import com.xenomachina.argparser.default

LanderlYoung

#! /usr/bin/env bash

#--------------------
# Standard options:
export COMMON_FF_CFG_FLAGS=
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --prefix=PREFIX"

# Licensing options:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-gpl"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-version3"