显示签名信息

在某些情况下（例如获取 Google API 密钥），你需要找到密钥库指纹。Gradle 有一个方便的任务，显示所有签名信息，包括密钥库指纹：

./gradlew signingReport

这是一个示例输出：

:app:signingReport
Variant: release
Config: noneVariant: debug
Config: debug
Store: /Users/user/.android/debug.keystore
Alias: AndroidDebugKey
MD5: 25:08:76:A9:7C:0C:19:35:99:02:7B:00:AA:1E:49:CA
SHA1: 26:BE:89:58:00:8C:5A:7D:A3:A9:D3:60:4A:30:53:7A:3D:4E:05:55
Valid until: Saturday 18 June 2044Variant: debugAndroidTest
Config: debug
Store: /Users/user/.android/debug.keystore
Alias: AndroidDebugKey
MD5: 25:08:76:A9:7C:0C:19:35:99:02:7B:00:AA:1E:49:CA
SHA1: 26:BE:89:58:00:8C:5A:7D:A3:A9:D3:60:4A:30:53:7A:3D:4E:05:55
Valid until: Saturday 18 June 2044Variant: debugUnitTest
Config: debug
Store: /Users/user/.android/debug.keystore
Alias: AndroidDebugKey
MD5: 25:08:76:A9:7C:0C:19:35:99:02:7B:00:AA:1E:49:CA
SHA1: 26:BE:89:58:00:8C:5A:7D:A3:A9:D3:60:4A:30:53:7A:3D:4E:05:55
Valid until: Saturday 18 June 2044Variant: releaseUnitTest
Config: none```