1

我在最新版本的 android studio 上执行此操作,最低 SDK 版本为 15 个依赖项:

> implementation fileTree(dir: 'libs', include: ['*.jar'])
> implementation 'com.android.support:appcompat-v7:28.0.0'
> implementation 'com.android.support.constraint:constraintlayout:1.1.3'
> testImplementation 'junit:junit:4.12' androidTestImplementation
> 'com.android.support.test:runner:1.0.2' androidTestImplementation
> 'com.android.support.test.espresso:espresso-core:3.0.2' implementation
> 'org.web3j:core:4.2.0-android' implementation
> 'com.android.support:multidex:1.0.3' implementation
> 'com.squareup.okhttp3:okhttp:3.14.0' implementation
> "io.reactivex.rxjava2:rxjava:2.2.2"

我的代码是:

public String createWallet() throws Exception {
        String path = Environment.getExternalStoragePublicDirectory(DIRECTORY_DOWNLOADS).getPath().toString();
        String fileName = WalletUtils.generateNewWalletFile("password", new File(path));
        return path + fileName;
}
4

2 回答 2

2

你可以在这里查看!

@serso 提供了一个函数“setupBouncyCastle()”,你必须把它放在你的类中并在 onCreat 中调用它。这将用随附的 Bouncy Castle 替换 Android 版本!就像他说的。^^

于 2019-04-04T21:00:06.753 回答
1

如果您正在准备发布版本,minifyEnabled 为 true 并面临此异常:

 java.security.NoSuchAlgorithmException: no such algorithm: ECDSA for provider BC

将这些行添加到 pro-gurd

-dontwarn java8.util.**
-dontwarn jnr.posix.**
-dontwarn com.kenai.**

#-keep class org.bouncycastle.**
-dontwarn org.bouncycastle.jce.provider.X509LDAPCertStoreSpi
-dontwarn org.bouncycastle.x509.util.LDAPStoreHelper

-keepclassmembers class org.web3j.protocol.** { *; }
-keepclassmembers class org.web3j.crypto.* { *; }

-keep class * extends org.web3j.abi.TypeReference
-keep class * extends org.web3j.abi.datatypes.Type

#-dontwarn java.lang.SafeVarargs
-dontwarn org.slf4j.**

谢谢米莫萨哈_

于 2021-03-11T13:33:12.767 回答