1

我想使用系统密钥为我的应用程序获取系统权限。我已经使用/build/target/product/security/中的testkey.x509.pem和testkey.pk8对 应用程序进行了签名（文件夹中没有其他密钥），但运行时检查显示我的应用程序不是系统应用程序。

为了检查我使用以下代码

/**
 * Match signature of application to identify that if it is signed by system
 * or not.
 * 
 * @param packageName
 *            package of application. Can not be blank.
 * @return <code>true</code> if application is signed by system certificate,
 *         otherwise <code>false</code>
 */
public boolean isSystemApp(String packageName) {
    try {
        // Get packageinfo for target application
        PackageInfo targetPkgInfo = mPackageManager.getPackageInfo(
                packageName, PackageManager.GET_SIGNATURES);
        // Get packageinfo for system package
        PackageInfo sys = mPackageManager.getPackageInfo(
                "android", PackageManager.GET_SIGNATURES);
        // Match both packageinfo for there signatures
        return (targetPkgInfo != null && targetPkgInfo.signatures != null && sys.signatures[0]
                .equals(targetPkgInfo.signatures[0]));
    } catch (PackageManager.NameNotFoundException e) {
        return false;
    }
}

我究竟做错了什么？

4

0 回答 0