Android编译出错

在编译Android系统的时候出的问题：
target Java: CtsVerifier (out/target/common/obj/APPS/CtsVerifier_intermediates/classes)
cts/apps/CtsVerifier/src/com/android/cts/verifier/PassFailButtons.java:191: onCreateDialog(int,android.os.Bundle) in android.app.Activity cannot implement onCreateDialog(int,android.os.Bundle) in com.android.cts.verifier.PassFailButtons.PassFailActivity; attempting to assign weaker access privileges; was public
    private static <T extends android.app.Activity & PassFailActivity>
                    ^
1 error
make: *** [out/target/common/obj/APPS/CtsVerifier_intermediates/classes-full-debug.jar] Error 41
make: *** Waiting for unfinished jobs....
有人遇到过吗？请问这有啥办法吗？

sudo update-alternatives --config javac，选择jdk1.6.0，而不是openjdk。

root@ubuntu:/opt/EmbedSky/TQ3358_andriod/TQ3358_Android4.0_v1.0# java -version
java version "1.6.0_30"
Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
Java HotSpot(TM) Client VM (build 20.5-b03, mixed mode, sharing)