摘要：
1 import android.app.Activity; 2 import android.content.pm.PackageInfo; 3 import android.content.pm.PackageManager; 4 import android.content.pm.PackageManager.NameNotFoundException; 5 import android.content.pm.Signature; 6 import android.os.Bundle; 7 import android.util.Log; 8 9 public class MainA.. 阅读全文
