前言
热修复就不用多说了吧，以前公司发布一个新版本，上线以后发现一点小bug，项目里面如果没有集成热修复，不得已只能重新打包，签名，发版，十几个渠道呀，呵呵。现在有了热修复，小问题再也不用重新打包了，又可以愉快地玩耍了。
源码下载;https://github.com/baojie0327/HotFixTinker
什么是Tinker
Tinker是微信官方的Android热补丁解决方案，它支持动态下发代码、So库以及资源，让应用能够在不需要重新安装的情况下实现更新。当然，你也可以使用Tinker来更新你的插件。
它主要包括以下几个部分：
- gradle编译插件: tinker-patch-gradle-plugin
- 核心sdk库: tinker-android-lib
- 非gradle编译用户的命令行版本: tinker-patch-cli.jar
为什么使用Tinker
当前市面的热补丁方案有很多，其中比较出名的有阿里的AndFix、美团的Robust以及QZone的超级补丁方案。但它们都存在无法解决的问题
| -- | Tinker | QZone | AndFix | Robust |
|---|---|---|---|---|
| 类替换 | yes | yes | no | no |
| So替换 | yes | no | no | no |
| 资源替换 | yes | yes | no | no |
| 全平台支持 | yes | yes | yes | yes |
| 即时生效 | no | no | yes | yes |
| 性能损耗 | 较小 | 较大 | 较小 | 较小 |
| 补丁包大小 | 较小 | 较大 | 一般 | 一般 |
| 开发透明 | yes | yes | no | no |
| 复杂度 | 较低 | 较低 | 复杂 | 复杂 |
| gradle支持 | yes | no | no | no |
| Rom体积 | 较大 | 较小 | 较小 | 较小 |
| 成功率 | 较高 | 较高 | 一般 | 最高 |
总的来说:
- AndFix作为native解决方案，首先面临的是稳定性与兼容性问题，更重要的是它无法实现类替换，它是需要大量额外的开发成本的；
- Robust兼容性与成功率较高，但是它与AndFix一样，无法新增变量与类只能用做的bugFix方案；
- Qzone方案可以做到发布产品功能，但是它主要问题是插桩带来Dalvik的性能问题，以及为了解决Art下内存地址问题而导致补丁包急速增大的。
特别是在Android N之后，由于混合编译的inline策略修改，对于市面上的各种方案都不太容易解决。而Tinker热补丁方案不仅支持类、So以及资源的替换，它还是2.X－8.X(1.9.0以上支持8.X)的全平台支持。利用Tinker我们不仅可以用做bugfix,甚至可以替代功能的发布。Tinker已运行在微信的数亿Android设备上，那么为什么你不使用Tinker呢？
Tinker的已知问题
由于原理与系统限制，Tinker有以下已知问题：
- Tinker不支持修改AndroidManifest.xml，Tinker不支持新增四大组件(1.9.0支持新增非export的Activity)；
- 由于Google Play的开发者条款限制，不建议在GP渠道动态更新代码；
- 在Android N上，补丁对应用启动时间有轻微的影响；
- 不支持部分三星android-21机型，加载补丁时会主动抛出
"TinkerRuntimeException:checkDexInstall failed"； - 对于资源替换，不支持修改remoteView。例如transition动画，notification icon以及桌面图标。
上面的介绍来自Tinker的官网https://github.com/Tencent/tinker/wiki
集成Tinker
1 在项目的gradle.properties里添加Tinker的版本,写这篇文章的时候，最新的版本号是1.9.2
TINKER_VERSION=1.9.2
2 在项目的build.gradle中，添加tinker-patch-gradle-plugin的依赖
dependencies {
classpath 'com.android.tools.build:gradle:2.3.3'
classpath "com.tencent.tinker:tinker-patch-gradle-plugin:${TINKER_VERSION}"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
3 在app的build.gradle下，添加tinker的库依赖，有3个
compile("com.tencent.tinker:tinker-android-lib:${TINKER_VERSION}") { changing = true }
provided("com.tencent.tinker:tinker-android-anno:${TINKER_VERSION}") { changing = true }
compile "com.android.support:multidex:1.0.1"
4 在app的gradle文件app/build.gradle，添加tinker的相关配置
apply plugin: 'com.android.application'
//Tinker相关配置start======================================
def gitSha() {
try {
// String gitRev = 'git rev-parse --short HEAD'.execute(null, project.rootDir).text.trim()
String gitRev = "${versionName}"
if (gitRev == null) {
throw new GradleException("can't get git rev, you should add git to system path or just input test value, such as 'testTinkerId'")
}
return gitRev
} catch (Exception e) {
throw new GradleException("can't get git rev, you should add git to system path or just input test value, such as 'testTinkerId'")
}
}
def javaVersion = JavaVersion.VERSION_1_7
//Tinker相关配置end======================================
android {
compileSdkVersion 26
buildToolsVersion "27.0.1"
compileOptions {
sourceCompatibility javaVersion
targetCompatibility javaVersion
}
//recommend
dexOptions {
jumboMode = true
}
//设置签名
signingConfigs {
release {
try {
storeFile file("./keystore/release.keystore")
storePassword "testres"
keyAlias "testres"
keyPassword "testres"
} catch (ex) {
throw new InvalidUserDataException(ex.toString())
}
}
debug {
storeFile file("./keystore/debug.keystore")
}
}
defaultConfig {
applicationId "com.jackson.hotfixtinker"
minSdkVersion 15
targetSdkVersion 26
versionCode project.versionCode as int
versionName project.versionName
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
//Tinker相关配置start======================================
/**
* you can use multiDex and install it in your ApplicationLifeCycle implement
*/
multiDexEnabled true
/**
* buildConfig can change during patch!
* we can use the newly value when patch
*/
buildConfigField "String", "MESSAGE", "\"I am the base apk\""
// buildConfigField "String", "MESSAGE", "\"I am the patch apk\""
/**
* client version would update with patch
* so we can get the newly git version easily!
*/
buildConfigField "String", "TINKER_ID", "\"${getTinkerIdValue()}\""
buildConfigField "String", "PLATFORM", "\"all\""
//Tinker相关配置end======================================
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.release
}
}
sourceSets {
main {
jniLibs.srcDirs = ['libs']
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile("com.tencent.tinker:tinker-android-lib:${TINKER_VERSION}") { changing = true }
provided("com.tencent.tinker:tinker-android-anno:${TINKER_VERSION}") { changing = true }
compile "com.android.support:multidex:1.0.1"
testCompile 'junit:junit:4.12'
}
// 配置开始walle===========================
walle {
apkOutputFolder = new File("${project.buildDir}/outputs/channels")
apkFileNameFormat = '${appName}-${packageName}-${channel}-${buildType}-v${versionName}-${versionCode}-${buildTime}-${flavorName}.apk'
//configFile与channelFile两者必须存在一个，否则无法生成渠道包。两者都存在时优先执行configFile
channelFile = new File("${project.getProjectDir()}/channel")
//configFile = new File("${project.getProjectDir()}/config.json")
}
// 配置结束walle===========================
//Tinker相关配置start======================================
def bakPath = file("${buildDir}/bakApk/")
/**
* you can use assembleRelease to build you base apk
* use tinkerPatchRelease -POLD_APK= -PAPPLY_MAPPING= -PAPPLY_RESOURCE= to build patch
* add apk from the build/bakApk
*/
ext {
//for some reason, you may want to ignore tinkerBuild, such as instant run debug build?
tinkerEnabled = true
//for normal build
//old apk file to build patch apk
tinkerOldApkPath = "${bakPath}/app-release-1214-16-59-56.apk"
//proguard mapping file to build patch apk
tinkerApplyMappingPath = "${bakPath}/app-release-1214-16-59-56-mapping.txt"
//resource R.txt to build patch apk, must input if there is resource changed
tinkerApplyResourcePath = "${bakPath}/app-release-1214-16-59-56-R.txt"
//only use for build all flavor, if not, just ignore this field
tinkerBuildFlavorDirectory = "${bakPath}/app-1214-16-59-56"
}
def getOldApkPath() {
return hasProperty("OLD_APK") ? OLD_APK : ext.tinkerOldApkPath
}
def getApplyMappingPath() {
return hasProperty("APPLY_MAPPING") ? APPLY_MAPPING : ext.tinkerApplyMappingPath
}
def getApplyResourceMappingPath() {
return hasProperty("APPLY_RESOURCE") ? APPLY_RESOURCE : ext.tinkerApplyResourcePath
}
def getTinkerIdValue() {
return hasProperty("TINKER_ID") ? TINKER_ID : gitSha()
}
def buildWithTinker() {
return hasProperty("TINKER_ENABLE") ? TINKER_ENABLE : ext.tinkerEnabled
}
def getTinkerBuildFlavorDirectory() {
return ext.tinkerBuildFlavorDirectory
}
if (buildWithTinker()) {
apply plugin: 'com.tencent.tinker.patch'
tinkerPatch {
/**
* necessary，default 'null'
* the old apk path, use to diff with the new apk to build
* add apk from the build/bakApk
*/
oldApk = getOldApkPath()
/**
* optional，default 'false'
* there are some cases we may get some warnings
* if ignoreWarning is true, we would just assert the patch process
* case 1: minSdkVersion is below 14, but you are using dexMode with raw.
* it must be crash when load.
* case 2: newly added Android Component in AndroidManifest.xml,
* it must be crash when load.
* case 3: loader classes in dex.loader{} are not keep in the main dex,
* it must be let tinker not work.
* case 4: loader classes in dex.loader{} changes,
* loader classes is ues to load patch dex. it is useless to change them.
* it won't crash, but these changes can't effect. you may ignore it
* case 5: resources.arsc has changed, but we don't use applyResourceMapping to build
*/
ignoreWarning = false
/**
* optional，default 'true'
* whether sign the patch file
* if not, you must do yourself. otherwise it can't check success during the patch loading
* we will use the sign config with your build type
*/
useSign = true
/**
* optional，default 'true'
* whether use tinker to build
*/
tinkerEnable = buildWithTinker()
/**
* Warning, applyMapping will affect the normal android build!
*/
buildConfig {
/**
* optional，default 'null'
* if we use tinkerPatch to build the patch apk, you'd better to apply the old
* apk mapping file if minifyEnabled is enable!
* Warning:
* you must be careful that it will affect the normal assemble build!
*/
applyMapping = getApplyMappingPath()
/**
* optional，default 'null'
* It is nice to keep the resource id from R.txt file to reduce java changes
*/
applyResourceMapping = getApplyResourceMappingPath()
/**
* necessary，default 'null'
* because we don't want to check the base apk with md5 in the runtime(it is slow)
* tinkerId is use to identify the unique base apk when the patch is tried to apply.
* we can use git rev, svn rev or simply versionCode.
* we will gen the tinkerId in your manifest automatic
*/
tinkerId = getTinkerIdValue()
/**
* if keepDexApply is true, class in which dex refer to the old apk.
* open this can reduce the dex diff file size.
*/
keepDexApply = false
/**
* optional, default 'false'
* Whether tinker should treat the base apk as the one being protected by app
* protection tools.
* If this attribute is true, the generated patch package will contain a
* dex including all changed classes instead of any dexdiff patch-info files.
*/
isProtectedApp = false
/**
* optional, default 'false'
* Whether tinker should support component hotplug (add new component dynamically).
* If this attribute is true, the component added in new apk will be available after
* patch is successfully loaded. Otherwise an error would be announced when generating patch
* on compile-time.
*
* <b>Notice that currently this feature is incubating and only support NON-EXPORTED Activity</b>
*/
supportHotplugComponent = false
}
dex {
/**
* optional，default 'jar'
* only can be 'raw' or 'jar'. for raw, we would keep its original format
* for jar, we would repack dexes with zip format.
* if you want to support below 14, you must use jar
* or you want to save rom or check quicker, you can use raw mode also
*/
dexMode = "jar"
/**
* necessary，default '[]'
* what dexes in apk are expected to deal with tinkerPatch
* it support * or ? pattern.
*/
pattern = ["classes*.dex",
"assets/secondary-dex-?.jar"]
/**
* necessary，default '[]'
* Warning, it is very very important, loader classes can't change with patch.
* thus, they will be removed from patch dexes.
* you must put the following class into main dex.
* Simply, you should add your own application {@code tinker.sample.android.SampleApplication}
* own tinkerLoader, and the classes you use in them
*
*/
loader = [
//use sample, let BaseBuildInfo unchangeable with tinker
"tinker.sample.android.app.BaseBuildInfo"
]
}
lib {
/**
* optional，default '[]'
* what library in apk are expected to deal with tinkerPatch
* it support * or ? pattern.
* for library in assets, we would just recover them in the patch directory
* you can get them in TinkerLoadResult with Tinker
*/
pattern = ["lib/*/*.so"]
}
res {
/**
* optional，default '[]'
* what resource in apk are expected to deal with tinkerPatch
* it support * or ? pattern.
* you must include all your resources in apk here,
* otherwise, they won't repack in the new apk resources.
*/
pattern = ["res/*", "assets/*", "resources.arsc", "AndroidManifest.xml"]
/**
* optional，default '[]'
* the resource file exclude patterns, ignore add, delete or modify resource change
* it support * or ? pattern.
* Warning, we can only use for files no relative with resources.arsc
*/
ignoreChange = ["assets/sample_meta.txt"]
/**
* default 100kb
* for modify resource, if it is larger than 'largeModSize'
* we would like to use bsdiff algorithm to reduce patch file size
*/
largeModSize = 100
}
packageConfig {
/**
* optional，default 'TINKER_ID, TINKER_ID_VALUE' 'NEW_TINKER_ID, NEW_TINKER_ID_VALUE'
* package meta file gen. path is assets/package_meta.txt in patch file
* you can use securityCheck.getPackageProperties() in your ownPackageCheck method
* or TinkerLoadResult.getPackageConfigByName
* we will get the TINKER_ID from the old apk manifest for you automatic,
* other config files (such as patchMessage below)is not necessary
*/
configField("patchMessage", "tinker is sample to use")
/**
* just a sample case, you can use such as sdkVersion, brand, channel...
* you can parse it in the SamplePatchListener.
* Then you can use patch conditional!
*/
configField("platform", "all")
/**
* patch version via packageConfig
*/
configField("patchVersion", "1.0")
}
//or you can add config filed outside, or get meta value from old apk
//project.tinkerPatch.packageConfig.configField("test1", project.tinkerPatch.packageConfig.getMetaDataFromOldApk("Test"))
//project.tinkerPatch.packageConfig.configField("test2", "sample")
/**
* if you don't use zipArtifact or path, we just use 7za to try
*/
sevenZip {
/**
* optional，default '7za'
* the 7zip artifact path, it will use the right 7za with your platform
*/
zipArtifact = "com.tencent.mm:SevenZip:1.1.10"
/**
* optional，default '7za'
* you can specify the 7za path yourself, it will overwrite the zipArtifact value
*/
// path = "/usr/local/bin/7za"
}
}
List<String> flavors = new ArrayList<>();
project.android.productFlavors.each { flavor ->
flavors.add(flavor.name)
}
boolean hasFlavors = flavors.size() > 0
def date = new Date().format("MMdd-HH-mm-ss")
/**
* bak apk and mapping
*/
android.applicationVariants.all { variant ->
/**
* task type, you want to bak
*/
def taskName = variant.name
tasks.all {
if ("assemble${taskName.capitalize()}".equalsIgnoreCase(it.name)) {
it.doLast {
copy {
def fileNamePrefix = "${project.name}-${variant.baseName}"
def newFileNamePrefix = hasFlavors ? "${fileNamePrefix}" : "${fileNamePrefix}-${date}"
def destPath = hasFlavors ? file("${bakPath}/${project.name}-${date}/${variant.flavorName}") : bakPath
from variant.outputs.first().outputFile
into destPath
rename { String fileName ->
fileName.replace("${fileNamePrefix}.apk", "${newFileNamePrefix}.apk")
}
from "${buildDir}/outputs/mapping/${variant.dirName}/mapping.txt"
into destPath
rename { String fileName ->
fileName.replace("mapping.txt", "${newFileNamePrefix}-mapping.txt")
}
from "${buildDir}/intermediates/symbols/${variant.dirName}/R.txt"
into destPath
rename { String fileName ->
fileName.replace("R.txt", "${newFileNamePrefix}-R.txt")
}
}
}
}
}
}
project.afterEvaluate {
//sample use for build all flavor for one time
if (hasFlavors) {
task(tinkerPatchAllFlavorRelease) {
group = 'tinker'
def originOldPath = getTinkerBuildFlavorDirectory()
for (String flavor : flavors) {
def tinkerTask = tasks.getByName("tinkerPatch${flavor.capitalize()}Release")
dependsOn tinkerTask
def preAssembleTask = tasks.getByName("process${flavor.capitalize()}ReleaseManifest")
preAssembleTask.doFirst {
String flavorName = preAssembleTask.name.substring(7, 8).toLowerCase() + preAssembleTask.name.substring(8, preAssembleTask.name.length() - 15)
project.tinkerPatch.oldApk = "${originOldPath}/${flavorName}/${project.name}-${flavorName}-release.apk"
project.tinkerPatch.buildConfig.applyMapping = "${originOldPath}/${flavorName}/${project.name}-${flavorName}-release-mapping.txt"
project.tinkerPatch.buildConfig.applyResourceMapping = "${originOldPath}/${flavorName}/${project.name}-${flavorName}-release-R.txt"
}
}
}
task(tinkerPatchAllFlavorDebug) {
group = 'tinker'
def originOldPath = getTinkerBuildFlavorDirectory()
for (String flavor : flavors) {
def tinkerTask = tasks.getByName("tinkerPatch${flavor.capitalize()}Debug")
dependsOn tinkerTask
def preAssembleTask = tasks.getByName("process${flavor.capitalize()}DebugManifest")
preAssembleTask.doFirst {
String flavorName = preAssembleTask.name.substring(7, 8).toLowerCase() + preAssembleTask.name.substring(8, preAssembleTask.name.length() - 13)
project.tinkerPatch.oldApk = "${originOldPath}/${flavorName}/${project.name}-${flavorName}-debug.apk"
project.tinkerPatch.buildConfig.applyMapping = "${originOldPath}/${flavorName}/${project.name}-${flavorName}-debug-mapping.txt"
project.tinkerPatch.buildConfig.applyResourceMapping = "${originOldPath}/${flavorName}/${project.name}-${flavorName}-debug-R.txt"
}
}
}
}
}
}
注意
直接运行运行Tinker示例可能会出现缺少TinkerId问题解决
问题描述：can’t get git rev, you should add git to system path or just input test value, such as ‘testTinkerId’
产生原因：由于tinker生成补丁的版本号，用的是git的版本号，如果你不是通过git下载的tinker源代码，或者没有配置系统的git路径，或者没有commit一次，都有可能出现呢上面的问题。
解决办法：
-
方法一：不使用git的版本号作为tinkerId，改为使用versionNmae
修改gitSha方法返回值 方法二：使用git的版本号，解决无法获取到版本号的问题。
下载和安装git
配置AS的git路径和系统git路径
-
AS配置：File–>Settings–>Version Control–>Git–>Path to Git executable
AS配置git路径点击Test，出现当前git版本号，表示AS的git路径配置成功。
git配置成功 -
系统配置：系统环境变量和Java环境配置一样，在此就不赘述了。配置成功后，在控制台数据 git –version,检测是否配置成功。
系统git配置
注意：
配置完系统的git环境变量，如果你的AS处于开启的状态，请重启后进行gradle编译。
我按照第二种方法并没有成功，第一种成功了，可以放心使用。
5 自定义Application类
按照Tinker官方的建议，由Tinker自动生成Application,我们需要创建一个MyApplicationLike，继承自DefaultApplicationLike,然后将我们自己的Application中所有逻辑放在MyApplicationLike中的onCreate中。最后需要将我们项目中之前的Application类删除,如下：
package com.jackson.hotfixtinker; /**
* 2017-12-07
* Copyright (c) 2017 KL Co.Ltd. All right reserved.
*/
import android.annotation.TargetApi;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.support.multidex.MultiDex;
import com.jackson.hotfixtinker.tinker.MyLogImp;
import com.jackson.hotfixtinker.tinker.SampleApplicationContext;
import com.jackson.hotfixtinker.tinker.TinkerManager;
import com.tencent.tinker.anno.DefaultLifeCycle;
import com.tencent.tinker.lib.tinker.Tinker;
import com.tencent.tinker.lib.tinker.TinkerInstaller;
import com.tencent.tinker.loader.app.DefaultApplicationLike;
import com.tencent.tinker.loader.shareutil.ShareConstants;
/**
* class description here
* @author Jackson
* @version 1.0.0
* since 2017 12 07
*/
@SuppressWarnings("unused")
@DefaultLifeCycle(application = "com.jackson.hotfixtinker.MyApplication", // 自定义生成
flags = ShareConstants.TINKER_ENABLE_ALL,
loadVerifyFlag = false)
public class MyApplicationLike extends DefaultApplicationLike {
public static MyApplicationLike myApplication;
public MyApplicationLike(Application application, int tinkerFlags, boolean tinkerLoadVerifyFlag, long applicationStartElapsedTime, long applicationStartMillisTime, Intent tinkerResultIntent) {
super(application, tinkerFlags, tinkerLoadVerifyFlag, applicationStartElapsedTime, applicationStartMillisTime, tinkerResultIntent);
}
@Override
public void onCreate() {
super.onCreate();
myApplication = this;
//将我们自己的MyApplication中的所有逻辑放在这里，例如初始化一些第三方
}
/**
* install multiDex before install tinker
* so we don't need to put the tinker lib classes in the main dex
*
* @param base
*/
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
@Override
public void onBaseContextAttached(Context base) {
super.onBaseContextAttached(base);
//you must install multiDex whatever tinker is installed!
MultiDex.install(base);
SampleApplicationContext.application = getApplication();
SampleApplicationContext.context = getApplication();
// Tinker管理类，保存当前对象
TinkerManager.setTinkerApplicationLike(this);
// 崩溃保护
TinkerManager.initFastCrashProtect();
//should set before tinker is installed
TinkerManager.setUpgradeRetryEnable(true);
//optional set logIml, or you can use default debug log
TinkerInstaller.setLogIml(new MyLogImp());
//installTinker after load multiDex
//or you can put com.tencent.tinker.** to main dex
TinkerManager.installTinker(this);
Tinker tinker = Tinker.with(getApplication());
}
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public void registerActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks callback) {
getApplication().registerActivityLifecycleCallbacks(callback);
}
/**
* 获取SampleApplication实例
* @return
*/
public static MyApplicationLike getMyApplication(){
return myApplication;
}
}
这个com.jackson.hotfixtinker.MyApplication是我们真正的Application，在AndroidManifest.xml去注册
6 添加Tinker相关的类，参照官方实例
7 在AndroidManifest.xml添加读写sd卡的权限
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
8 这一步我当时忘掉了，导致式中不能修复成功。添加的Tinker相关类下，有个SampleResultService类，是一个Service，所以要对这个Service注册。
9 添加加载补丁代码，测试
public class MainActivity extends AppCompatActivity {
TextView mTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//加载补丁包
TinkerInstaller.onReceiveUpgradePatch(getApplicationContext(), Environment.getExternalStorageDirectory().getAbsolutePath() + "/patch_signed_7zip.apk");
mTextView= (TextView) findViewById(R.id.text);
mTextView.setText("bug！！");
Tinker tinker = Tinker.with(getApplicationContext());
Log.d("hbj",tinker.isTinkerLoaded()+"---");
}
@Override
protected void onResume() {
super.onResume();
Utils.setBackground(false);
}
@Override
protected void onPause() {
super.onPause();
Utils.setBackground(true);
}
}
我们在onCreate（）方法里加载修复补丁包，名字patch_signed_7zip.apk，放在了根目录下，当然，Tinker官方建议补丁包不要以.apk结尾，以防止运营商劫持。
我们来模拟一下bug修复过程：
我们在MainActivity下放了一个TextView，显示的是 “bug！！”,我们按照正常的app打包签名流程，将打包签名好的app安装到手机上。这里只讲release版本，debug版本类似。
-
安装后的app如图所示，出现了bug
现在我们就要修复bug并生成补丁包了。
-
我们正常打包完毕后，会在 build--bakApk目录下生成两个文件，如图所示：
当你开了混淆， minifyEnabled false，是生成三个文件的，不过是一样的。
上述三个文件非常重要，千万不要丢了，最好保存在本地。
-
把这三个文件对应到app下的build.gradle下，如图：
修复bug
mTextView.setText("修复！！");运行补丁命令获取补丁包
运行补丁命令，单击AS右侧顶部gradle–>双击tinkerPatchRelease，如图:
-
如图会在下面的目录生成补丁包
image.png - 将补丁包拷贝到手机根目录下，重启app，你就会发现bug修复了。
注意：
1 真实开发过程中补丁包是要下载到手机中的
2 一定要重启app才能修复，因为tinker是不支持即时修复的
3 如果还没有修复，把app的去哪先目录打开，看是否授权了读取存储的权限，真实项目里是要动态申请的
源码下载
https://github.com/baojie0327/HotFixTinker
关于Tinker的后续问题，将在下一篇文章讨论http://www.jianshu.com/p/f6c92d99f8b9。
