我最近在我的应用程序中添加了 Android 的 LVL 复制保护,结果至少可以说是不稳定的。
我在开发人员控制台中手动设置的每个测试响应似乎都按预期工作。但是,当我设置“正常响应”时,问题就出现了。周三,我第一次上传了这个应用程序,在它上市后不久,它按预期报告了 LICENSED。
但是,昨天下午没有任何警告,我的应用程序突然告诉我我没有获得许可。到目前为止,我没有对开发人员的控制台或代码进行任何更改。发现这一点后,我立即取消发布,直到找到解决方案。我已经尝试清除应用程序的缓存和 Google Play 的缓存。
所以,我不知道我在这里做错了什么。我通过 Eclipse 中的 APK 在手机上安装了自己的应用程序,而不是从市场上购买自己的应用程序。要进行 LVL 的现场测试,我是否必须实际购买自己的应用程序,或者上传到开发者页面就足够了?我的 LVL 代码实际上是示例页面的副本,我在版本中这样做是为了在进一步优化之前尝试开始工作。我把它贴在这里,剪掉了一些可识别的信息。
public class Main extends Activity {
private static final byte[] SALT = { <salt> };
private static final String B64 = "<base 64 key>";
private dbHelper db = new dbHelper(this);
private int requestCode;
LicenseCheckerCallback mLCC;
LicenseChecker mC;
Handler mH;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
checkL();
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == 1) {
startActivity(new Intent(Main.this, MainProfiler.class)); //callback for profile setup
finish();
}
}
protected void checkL() {
String a = Settings.Secure.getString(getContentResolver(), Settings.Secure.ANDROID_ID);
mH = new Handler();
mLCC = new settingsResolved();
mC = new LicenseChecker(
this,
new ServerManagedPolicy(this, new AESObfuscator(SALT, getPackageName(), a)),
B64);
mC.checkAccess(mLCC);
}
protected class settingsResolved implements LicenseCheckerCallback {
@Override
public void allow(int reason) {
//the application is licensed properly
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
//authorize access
startFromCallback();
}
@Override
public void dontAllow(int reason) {
//the application is not licensed properly
Log.e("Main", "LVL Failed!");
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
failFromCallback(reason);
}
@Override
public void applicationError(int errorCode) {
//an error occurred
Log.e("Main", "LVL Error!");
if (isFinishing()) {
// Don't update UI if Activity is finishing.
return;
}
errorFromCallback(errorCode);
}
}
private void startProcedure() {
if (db.getRunOnce()) { //this is the first run
Intent i = new Intent(Main.this, ProfileSetup.class);
i.putExtra("NewProfile", true);
startActivityForResult(i, requestCode);
} else { //this is not the first run
startActivity(new Intent(Main.this, MainProfiler.class));
finish();
}
}
private void failureState(int reason) {
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("LVL Error");
adb.setCancelable(false);
adb.setMessage(<license refused message>));
adb.setPositiveButton("Exit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
if (reason != Policy.NOT_LICENSED) {// not NOT_LICENSED, meaning the error is not due to a licensing issue
adb.setNegativeButton("Check Again", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
checkL();
}
});
} else {
adb.setNegativeButton("Google Play", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse("market://details?id=<package name>"));
startActivity(i);
finish();
}
});
}
adb.create().show();
}
private void applicationError(int errorCode) {
AlertDialog.Builder adb = new AlertDialog.Builder(this);
adb.setTitle("LVL Error");
adb.setCancelable(false);
adb.setMessage(<application error message>);
adb.setPositiveButton("Exit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
adb.create().show();
}
private void startFromCallback() {
mH.post(new Runnable() {
public void run() {
Log.i("LVL", "License Pass!");
startProcedure();
}
});
}
private void failFromCallback(final int reason) {
mH.post(new Runnable() {
public void run() {
failureState(reason);
}
});
}
private void errorFromCallback(final int errorCode) {
mH.post(new Runnable() {
public void run() {
applicationError(errorCode);
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mC != null) {
mC.onDestroy();
}
}
}