在 Gradle 使用构建类型在一个设备上运行使用 ContentProvider 的同一个应用程序

我更喜欢西里尔和瑞乔瓦蒂的混合物。我认为更简单，你只有两个修改。

build.gradle看起来像:

android {
...
productFlavors {
production {
packageName "package.name.production"
resValue "string", "authority", "package.name.production.provider"
buildConfigField "String", "AUTHORITY", "package.name.production.provider"
}


testing {
packageName "package.name.debug"
resValue "string", "authority", "package.name.debug.provider"
buildConfigField "String", "AUTHORITY", "package.name.debug.provider"
}
}
...
}

还有 AndroidManifest.xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="package.name" >


<application
...>


<provider android:name=".contentprovider.Provider" android:authorities="@string/authority" />


</application>
</manifest>

在 xml 中使用 ${applicationId}占位符，在代码中使用 BuildConfig.APPLICATION_ID占位符。

您将需要扩展构建脚本，以启用除清单之外的 xml 文件中的占位符。您可以使用每个构建变体的源目录来提供 xml 文件的不同版本，但是维护将变得非常麻烦。

AndroidManifest.xml

可以在清单中立即使用 applicationId 占位符:

<provider
android:name=".provider.DatabaseProvider"
android:authorities="${applicationId}.DatabaseProvider"
android:exported="false" />

注意 ${applicationId}位。这在构建时被替换为正在构建的构建变量的实际 applicationId。

用密码

ContentProvider 需要在代码中构造权限字符串。

public class DatabaseContract {
/** The authority for the database provider */
public static final String AUTHORITY = BuildConfig.APPLICATION_ID + ".DatabaseProvider";
// ...
}

请注意 BuildConfig.APPLICATION_ID位。它是一个生成的类，具有正在构建的构建变量的实际 applicationId。

Res/xml/files，例如 syncAdapter.xml，Accountauthenticator.xml

如果希望使用 Sync Adapter，则需要在 res/xml/目录中的 xml 文件中为 ContentProvider 和 AccountManager 提供元数据。这里不支持 applicationId 占位符。但是您可以自己扩展构建脚本来侵入它。

<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android"
android:accountType="${applicationId}"
android:allowParallelSyncs="false"
android:contentAuthority="${applicationId}.DatabaseProvider"
android:isAlwaysSyncable="true"
android:supportsUploading="true"
android:userVisible="true" />


<account-authenticator xmlns:android="http://schemas.android.com/apk/res/android"
android:accountType="${applicationId}"
android:icon="@drawable/ic_launcher"
android:label="@string/account_authenticator_label"
android:smallIcon="@drawable/ic_launcher" />

再次注意 ${applicationId}。这只有在您将下面的 gradle 脚本添加到模块的根目录并从 build.gradle 应用它时才有效。

建造，分级

应用模块 build.gradle 脚本中的额外构建脚本。

apply plugin: 'com.android.application'
apply from: './build-processApplicationId.gradle'


android {
compileSdkVersion 21
// etc.

Build-processApplicationId. gradle

下面是 res/xml/占位符构建脚本的工作源代码。Github提供了一个更好的文档版本。欢迎改进和扩展。

def replace(File file, String target, String replacement) {
def result = false;


def reader = new FileReader(file)
def lines = reader.readLines()
reader.close()


def writer = new FileWriter(file)
lines.each { line ->
String replacedLine = line.replace(target, replacement)
writer.write(replacedLine)
writer.write("\n")
result = result || !replacedLine.equals(line)
}
writer.close()


return result
}


def processXmlFile(File file, String applicationId) {
if (replace(file, "\${applicationId}", applicationId)) {
logger.info("Processed \${applicationId} in $file")
}
}


def processXmlDir(File dir, String applicationId) {
dir.list().each { entry ->
File file = new File(dir, entry)
if (file.isFile()) {
processXmlFile(file, applicationId)
}
}
}


android.applicationVariants.all { variant ->
variant.mergeResources.doLast {
def applicationId = variant.mergedFlavor.applicationId + (variant.buildType.applicationIdSuffix == null ? "" : variant.buildType.applicationIdSuffix)
def path = "${buildDir}/intermediates/res/${variant.dirName}/xml/"
processXmlDir(new File(path), applicationId)
}
}

Xml

在我看来，没有必要为资源字符串添加占位符支持。对于上面的用例，至少它是不需要的。然而，您可以轻松地更改脚本，不仅替换 res/xml/目录中的占位符，而且替换 res/values/目录中的占位符。

这篇文章的答案对我很有用。

Http://www.kevinrschultz.com/blog/2014/03/23/using-android-content-providers-with-multiple-package-names/

我使用3种不同的口味，所以我创建了3个清单与内容提供商在每种口味凯文舒尔茨说:

productFlavors {
free {
packageName "your.package.name.free"
}


paid {
packageName "your.package.name.paid"
}


other {
packageName "your.package.name.other"
}
}

您的主要舱单不包括供应商:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- Permissions -->
<application>
<!-- Nothing about Content Providers at all -->
<!-- Activities -->
...
<!-- Services -->
...
</application>

还有你们每种口味的清单，包括供应商。

免费:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" >
<application>
<!-- Content Providers -->
<provider
android:name="your.package.name.Provider"
android:authorities="your.package.name.free"
android:exported="false" >
</provider>
</application>
</manifest>

付费:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" >
<application>
<!-- Content Providers -->
<provider
android:name="your.package.name.Provider"
android:authorities="your.package.name.paid"
android:exported="false" >
</provider>
</application>
</manifest>

其他:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" >
<application>
<!-- Content Providers -->
<provider
android:name="your.package.name.Provider"
android:authorities="your.package.name.other"
android:exported="false" >
</provider>
</application>
</manifest>

格拉德，建造

android {
compileSdkVersion 23
buildToolsVersion "23.0.1"


defaultConfig {
applicationId "com.example.awsomeapp"
minSdkVersion 9
targetSdkVersion 23
versionCode 1
versionName "1.0.0"
}


productFlavors
{
prod {
applicationId = "com.example.awsomeapp"
}


demo {
applicationId = "com.example.awsomeapp.demo"
versionName = defaultConfig.versionName + ".DEMO"
}
}


buildTypes {
release {
signingConfig signingConfigs.release
debuggable false
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}


debug {
applicationIdSuffix ".debug"
versionNameSuffix = ".DEBUG"
debuggable true
}
}


applicationVariants.all { variant ->
variant.outputs.each { output ->
// rename the apk
def file = output.outputFile;
def newName;
newName = file.name.replace(".apk", "-" + defaultConfig.versionName + ".apk");
newName = newName.replace(project.name, "awsomeapp");
output.outputFile = new File(file.parent, newName);
}


//Generate values Content Authority and Account Type used in Sync Adapter, Content Provider, Authenticator
def valueAccountType = applicationId + '.account'
def valueContentAuthority = applicationId + '.authority'


//generate fields in Resource string file generated.xml
resValue "string", "content_authority", valueContentAuthority
resValue "string", "account_type", valueAccountType


//generate fields in BuildConfig class
buildConfigField "String", "ACCOUNT_TYPE", '"'+valueAccountType+'"'
buildConfigField "String", "CONTENT_AUTHORITY", '"'+valueContentAuthority+'"'


//replace field ${valueContentAuthority} in AndroidManifest.xml
mergedFlavor.manifestPlaceholders = [ valueContentAuthority: valueContentAuthority ]
}
}

Xml

<?xml version="1.0" encoding="utf-8"?>
<account-authenticator xmlns:android="http://schemas.android.com/apk/res/android"
android:accountType="@string/account_type"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:smallIcon="@drawable/ic_launcher" />

Sync _ Adapter.xml

<?xml version="1.0" encoding="utf-8"?>
<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android"
android:contentAuthority="@string/content_authority"
android:accountType="@string/account_type"
android:userVisible="true"
android:allowParallelSyncs="false"
android:isAlwaysSyncable="true"
android:supportsUploading="true"/>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0.0" package="com.example.awsomeapp">


<uses-permission android:name="android.permission.GET_ACCOUNTS"/><!-- SyncAdapter and GCM requires a Google account. -->
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
<uses-permission android:name="android.permission.USE_CREDENTIALS"/>


<!-- GCM Creates a custom permission so only this app can receive its messages. -->
<permission android:name="${applicationId}.permission.C2D_MESSAGE" android:protectionLevel="signature"/>
<uses-permission android:name="${applicationId}.permission.C2D_MESSAGE"/>


<application....
.......


<!-- Stub Authenticator -->
<service
android:name="com.example.awsomeapp.service.authenticator.CAuthenticatorService"
android:exported="true">
<intent-filter>
<action android:name="android.accounts.AccountAuthenticator"/>
</intent-filter>
<meta-data android:name="android.accounts.AccountAuthenticator" android:resource="@xml/authenticator"/>
</service>
<!--  -->


<!-- Sync Adapter -->
<service
android:name="com.example.awsomeapp.service.sync.CSyncService"
android:exported="true"
android:process=":sync">
<intent-filter>
<action android:name="android.content.SyncAdapter"/>
</intent-filter>
<meta-data android:name="android.content.SyncAdapter" android:resource="@xml/sync_adapter" />
</service>
<!--  -->


<!-- Content Provider -->
<provider android:authorities="${valueContentAuthority}"
android:exported="false"
android:name="com.example.awsomeapp.database.contentprovider.CProvider">
</provider>
<!--  -->
</application>
</manifest>

密码:

public static final String CONTENT_AUTHORITY = BuildConfig.CONTENT_AUTHORITY;
public static final String ACCOUNT_TYPE = BuildConfig.ACCOUNT_TYPE;