为每个 Build Variant 使用不同的 manifestPlaceholder

I would guess that you are referring to Fabric ApiKey? :) I just spent hours trying to do it in a similar way with the placeholders and specifying the ApiKey in the gradle file although it does not seem possible as of com.android.tools.build:gradle:1.3.1. It is possible to specify a placeholder for a specific flavor but not for a flavor AND buildType.

只是为了纠正你的语法，你必须这样做(如果可能的话)将是类似的，但 manifestPlaceholders 对于变体是未知的.

Just to correct your syntax, the way you would have to do it (if it was possible) would be something like that but manifestPlaceholders are unknown to variants.

applicationVariants.all{ variant->
    if (variant.productFlavors.get(0).name.equals("someFlavor")) {
        if (variant.buildType.name.equals("release")) {
            manifestPlaceholders = [ apiKey:"RELEASE_KEY_1" ]
        } else {
            manifestPlaceholders = [ apiKey:"DEBUG_KEY" ]
        }
    } else {
        if (variant.buildType.name.equals("release")) {
            manifestPlaceholders = [ apiKey:"RELEASE_KEY_2" ]
        } else {
            manifestPlaceholders = [ apiKey:"DEBUG_KEY" ]
        }    
    }
}

您真正需要做的是将密钥保留在 AndroidManifest.xml 中并使用多个清单文件处理它

What you actually need to do is to keep the key in the AndroidManifest.xml and handle it with multiple manifest file

src/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools">    
    <application>    
        <meta-data
            android:name="io.fabric.ApiKey"
            android:value="DEBUG_KEY" tools:replace="android:value"/>
    </application>    
</manifest>

src/someFlavorRelease/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools">    
    <application>    
        <meta-data
            android:name="io.fabric.ApiKey"
            android:value="RELEASE_KEY_1" tools:replace="android:value"/>
    </application>    
</manifest>

src/someOtherFlavorRelease/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools">    
    <application>    
        <meta-data
            android:name="io.fabric.ApiKey"
            android:value="RELEASE_KEY_2" tools:replace="android:value"/>
    </application>    
</manifest>

manifestMerger 将处理替换，您最终将在每个场景中获得正确的密钥.我刚刚成功实施.我只是希望你真的指的是 Fabric 密钥！:)

The manifestMerger will handle the replacement and you will end up with the proper key in every scenario. I just implemented it successfully. I just hope you were really referring to the Fabric key! :)

希望这会有所帮助！

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