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mmap内存映射具体流程如下：

1、用户进程调用内存映射函数库mmap，当前进程在虚拟地址空间中，寻找一段空闲的满足要求的虚拟地址。

2、此时内核收到相关请求后会调用内核的mmap函数，注意，不同于用户空间库函数。内核mmap函数通过虚拟文件系统定位到文件磁盘物理地址，既实现了文件地址和虚拟地址区域的映射关系。 此时，这片虚拟地址并没有任何数据关联到主存中。

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Android 开发日常相关整理

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apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion build_versions.target_sdk
    buildToolsVersion build_versions.build_tools_sdk

    defaultConfig {
        applicationId "com.wangmh.mhproject"
        minSdkVersion build_versions.min_sdk
        targetSdkVersion build_versions.target_sdk
        versionCode build_versions.version_code
        versionName build_versions.version_name

        multiDexEnabled true

        buildConfigField "String", "GIT_SHA", "\"${commitSha()}\""
        buildConfigField "String", "BUILD_DATE", "\"${buildDate()}\""

        sourceSets {
            main {
                jniLibs.srcDirs = ['libs']
            }
        }

        ndk {
            abiFilters 'armeabi'
        }

        android.applicationVariants.all { variant ->
            renameAPK(variant, defaultConfig)
        }

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    signingConfigs {
        debug {
//            storeFile file("../debug.keystore")
//            storePassword "android"
//            keyAlias "androiddebugkey"
//            keyPassword "android"
        }
//        release {
//            storeFile file("../debug.keystore")
//            storePassword "android"
//            keyAlias "androiddebugkey"
//            keyPassword "android"
//        }
    }

//    buildTypes {
//        debug {
//            minifyEnabled false
//            zipAlignEnabled false
//            shrinkResources false
//            debuggable true
//            signingConfig signingConfigs.debug
//            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
//        }
//
//        release {
//            minifyEnabled false
//            zipAlignEnabled false
//            shrinkResources false
//            debuggable true //当前版本打开debug日志
//            signingConfig signingConfigs.release
//            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
//        }
//    }

    flavorDimensions "default"
//    productFlavors {
//        develop {
////            resValue "string", "app_name", "小特助手dev"
//            versionNameSuffix "-Dev"
//            applicationIdSuffix ".dev"
//
//            buildConfigField "String", "BASE_URL", "\"https://aimart-public.sicaudm.com/\""
//            buildConfigField "String", "BASE_H5_URL", "\"https://aimart-public.sicaudm.com/\""
//
//            manifestPlaceholders = [
//                    PACKAGE_NAME : "com.zkj.aimart.dev"
//            ]
//        }
//        prod {
////            resValue "string", "app_name", "小特助手"
//
//            buildConfigField "String", "BASE_URL", "\"https://aimart.zkj.com/\""
//            buildConfigField "String", "BASE_H5_URL", "\"https://aimart.zkj.com/\""
//
//            manifestPlaceholders = [
//                    PACKAGE_NAME : "com.zkj.aimart",
//            ]
//        }
//    }

    androidExtensions {
        experimental = true
    }

    dexOptions {
        javaMaxHeapSize "4g"
    }

    compileOptions {
        sourceCompatibility build_versions.jvmTarget
        targetCompatibility build_versions.jvmTarget
    }
    kotlinOptions {
        jvmTarget = build_versions.jvmTarget
    }

}

dependencies {
    // Kotlin
    implementation deps.kotlin.stdlib
    // Support
    implementation deps.x.multidex
    implementation deps.x.design
    implementation deps.x.android_ktx
    implementation deps.x.app_compat
    implementation deps.x.recyclerview
    implementation deps.x.constraintlayout
    implementation deps.x.viewpager2

    // Dagger2
    implementation deps.dagger.runtime
    kapt deps.dagger.compiler
    implementation deps.dagger.android
    implementation deps.dagger.android_support
    kapt deps.dagger.android_processor

    // RxJava2
    implementation deps.rx.java
    implementation deps.rx.kotlin
    implementation deps.rx.android

    // AutoDispose
    implementation deps.autodispose.runtime
    implementation deps.autodispose.lifecycle
//    implementation deps.autodispose.lifecycle_ktx
    implementation deps.autodispose.android
//    implementation deps.autodispose.android_ktx
    implementation deps.autodispose.android_arch
//    implementation deps.autodispose.android_arch_ktx

    // OkIO
    implementation deps.okio
    // OkHttp
    implementation deps.okhttp.runtime
    implementation deps.okhttp.logging_interceptor

    // Retrofit
    implementation deps.retrofit.runtime
    implementation deps.retrofit.adapter_rxjava
    implementation deps.retrofit.converter_moshi

    // Timber
    implementation deps.timber

    // Arch Lifecycle
    implementation deps.lifecycle.runtime
    implementation deps.lifecycle.extensions
    implementation deps.lifecycle.java8
    kapt deps.lifecycle.compiler

    // Moshi - JSON library
    implementation deps.moshi.runtime
    kapt deps.moshi.kotlin_codegen

    // xcodescanner_zbar
    implementation deps.xcodescanner

    // AMap
    implementation deps.amap.map
    implementation deps.amap.location

    // AndroidAutoSize
    implementation deps.autosize

    // RxPermissions
    implementation deps.rxpermissions

    // BaseRecyclerViewAdapterHelper
    implementation deps.recyclerviewadapter

    // SmartRefreshLayout && SmartRefreshHeader
    implementation deps.smartrefresh.layout
    implementation deps.smartrefresh.header

    // Android Picker View
    implementation deps.pickerview

    // xinge push
//    implementation deps.xg.xg
//    implementation deps.xg.jg
//    implementation deps.xg.wup
//    implementation deps.xg.mid
//    implementation deps.xg.xiaomi
//    implementation deps.xg.meizu
//    implementation deps.xg.huawei

    // WebView框架
//    implementation project(':shangouh5module')

    implementation 'com.yanzhenjie:permission:1.0.8'
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation deps.qrcode_zxing
//    implementation deps.qrcode_zbar

    implementation deps.glide.glide
    kapt deps.glide.compiler

    implementation deps.numberbutton
    implementation deps.androidutilcode

    //蒲公英sdk主要是更新
//    implementation deps.updatesdk

    implementation project(':baseLib')
    implementation project(':mainLib')
    implementation project(':userLib')
}

def commitSha() {
    def value = ''
    try {
        def git = new File(project.rootDir, ".git")
        def head = new File(git, "HEAD")
        def ref = new File(git, head.text
                .replace("\n", "")
                .split(" ")[1])
        value = ref.text.substring(0, 7)

        // value = 'git rev-parse --short HEAD'.execute([], project.rootDir).printText.trim()
    } catch (Exception e) {
        e.printStackTrace()
    }
    return value
}

static def buildDate() {
    return new Date().format("yyyy-MM-dd")
}

/**
 * 修改打包apk名称
 * @param variant
 * @param defaultConfig
 * @return
 */
def renameAPK(variant, defaultConfig) {
    variant.outputs.all { output ->
        def applicationName = "youxuan_helper"
        applicationName += "_${variant.buildType.name}"
        def formattedDate = new Date().format('yyyyMMdd')
        def fileName = applicationName + "_v" + defaultConfig.versionName + "_" + formattedDate + ".apk"
        outputFileName = fileName
    }
}

Posted on Edited on In
日常开发所用工具
  • Android Studio
  • IDEA
  • GIT
  • SourceTree
  • MWeb
  • Sublime Text 3
  • VScode
  • iTerm
  • TeamViewer
  • Charles
  • Postman
  • Dash
  • Google Chrome
  • Firefox
  • CheatSheet
  • Alfred
  • Paste
  • XMind
  • 奇妙清单
  • 1Password
  • Mounty
  • 其他：Email类软件、解压缩、系统工具等

Posted on Edited on In

Glide/Picasso/UIL/Fresco

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//用来阻止滑动加载图片
        mCommonRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
                if (newState == RecyclerView.SCROLL_STATE_DRAGGING || newState == RecyclerView.SCROLL_STATE_SETTLING) {
                    sIsScrolling = true;
                    if (!isRemoving()) {
                        Glide.with(INewsyunBaseFragment.this).pauseRequests();
                    }
                } else if (newState == RecyclerView.SCROLL_STATE_IDLE) {
                    if (sIsScrolling) {
                        if (!isRemoving()) {
                            Glide.with(INewsyunBaseFragment.this).resumeRequests();
                        }

                    }
                    sIsScrolling = false;
                }
            }
        });