Question

我正在尝试this tutorial 但是不断收到这个错误：

08-21 14：12：49.599：E / AndroidRuntime（714）： java.lang.NoClassDefFoundError： com.akiraapps.LicenseCheck $ MyLicenseCheckerCallback

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.provider.Settings.Secure;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;

import com.google.android.vending.licensing.AESObfuscator;
import com.google.android.vending.licensing.LicenseChecker;
import com.google.android.vending.licensing.LicenseCheckerCallback;
import com.google.android.vending.licensing.Policy;
import com.google.android.vending.licensing.ServerManagedPolicy;


public class LicenseCheck extends Activity {

    private static final String BASE64_PUBLIC_KEY = "no";

    private static final byte[] SALT = new byte[] { no};

    private TextView mStatusText;
    private Button mCheckLicenseButton;

    private LicenseCheckerCallback mLicenseCheckerCallback;
    private LicenseChecker mChecker;
    // A handler on the UI thread.
    private Handler mHandler;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.main);

        mStatusText = (TextView) findViewById(R.id.status_text);
        mCheckLicenseButton = (Button) findViewById(R.id.check_license_button);
        mCheckLicenseButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                doCheck();
            }
        });

        mHandler = new Handler();

        // Try to use more data here. ANDROID_ID is a single point of attack.
        String deviceId = Secure.getString(getContentResolver(), Secure.ANDROID_ID);

        // Library calls this when it's done.
        mLicenseCheckerCallback = new MyLicenseCheckerCallback();
        // Construct the LicenseChecker with a policy.
        mChecker = new LicenseChecker(
            this, new ServerManagedPolicy(this,
                new AESObfuscator(SALT, getPackageName(), deviceId)),
            BASE64_PUBLIC_KEY);
        doCheck();
    }

    protected Dialog onCreateDialog(int id) {
        final boolean bRetry = id == 1;
        return new AlertDialog.Builder(this)
            .setTitle(R.string.unlicensed_dialog_title)
            .setMessage(bRetry ? R.string.unlicensed_dialog_retry_body : R.string.unlicensed_dialog_body)
            .setPositiveButton(bRetry ? R.string.retry_button : R.string.buy_button, new DialogInterface.OnClickListener() {
                boolean mRetry = bRetry;
                public void onClick(DialogInterface dialog, int which) {
                    if ( mRetry ) {
                        doCheck();
                    } else {
                        Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(
                                "http://market.android.com/details?id=" + getPackageName()));
                            startActivity(marketIntent);                        
                    }
                }
            })
            .setNegativeButton(R.string.quit_button, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    finish();
                }
            }).create();
    }

    private void doCheck() {
        mCheckLicenseButton.setEnabled(false);
        setProgressBarIndeterminateVisibility(true);
        mStatusText.setText(R.string.checking_license);
        mChecker.checkAccess(mLicenseCheckerCallback);
    }

    private void displayResult(final String result) {
        mHandler.post(new Runnable() {
            public void run() {
                mStatusText.setText(result);
                setProgressBarIndeterminateVisibility(false);
                mCheckLicenseButton.setEnabled(true);
            }
        });
    }

    private void displayDialog(final boolean showRetry) {
        mHandler.post(new Runnable() {
            public void run() {
                setProgressBarIndeterminateVisibility(false);
                showDialog(showRetry ? 1 : 0);
                mCheckLicenseButton.setEnabled(true);
            }
        });
    }    

    private class MyLicenseCheckerCallback implements LicenseCheckerCallback {
        public void allow(int policyReason) {
            System.out.println("Allow");
            if (isFinishing()) {
                // Don't update UI if Activity is finishing.
                return;
            }
            // Should allow user access.
            displayResult(getString(R.string.allow));
        }

        public void dontAllow(int policyReason) {
            System.out.println("dontAllow");
            if (isFinishing()) {
                // Don't update UI if Activity is finishing.
                return;
            }
            displayResult(getString(R.string.dont_allow));
            // Should not allow access. In most cases, the app should assume
            // the user has access unless it encounters this. If it does,
            // the app should inform the user of their unlicensed ways
            // and then either shut down the app or limit the user to a
            // restricted set of features.
            // In this example, we show a dialog that takes the user to Market.
            // If the reason for the lack of license is that the service is
            // unavailable or there is another problem, we display a
            // retry button on the dialog and a different message.
            displayDialog(policyReason == Policy.RETRY);
        }

        public void applicationError(int errorCode) {
            System.out.println("applicationError");
            if (isFinishing()) {
                // Don't update UI if Activity is finishing.
                return;
            }
            // This is a polite way of saying the developer made a mistake
            // while setting up or calling the license checker library.
            // Please examine the error code and fix the error.
            String result = String.format(getString(R.string.application_error), errorCode);
            displayResult(result);
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mChecker.onDestroy();
    }

}

我按照教程将LVL设置为库项目，这些导入似乎没问题。

为什么会出现此错误？为什么它找不到内部阶级？如果我右键单击并说出show definition，它会跳转到内部类。

Answer 1

我有同样的问题。

以下步骤解决了问题

采用标准库示例
将library.jar文件从库项目中删入到libs文件夹

Answer 2

所以这个SO Answer就是修复它的原因我创建了一个名为libs的文件夹，并从随管理器下载的许可包中包含的库项目中删除了library.jar文件

我不明白的是每this answer这应该是为我做的因为我正在使用ADT 20.0.3

基本上它归结为我直接从android下载的一个例子，并且卡住了几个小时试图弄清楚出了什么问题，这看起来好像这一步应该在自述文件/帮助文档中或者我做错了什么

如果您知道为什么这是答案以及如何更好地做到这一点请回答并且我会改变您的答案。

Answer 3

我有完全相同的例外，上述建议均不适合我。

然而，通过确保您的LVL项目是一个图书馆项目（右键单击项目 - ＆gt;属性 - ＆gt; android并勾选“Is Libary”checkbo），我得到了我的工作。

要在您的应用程序项目中包含它，请删除对此的任何其他引用并应用更改。然后，如果还没有导航到（右键单击应用程序项目 - ＆gt;属性 - ＆gt; android），并在库部分单击添加并选择您的LVL项目。应用更改。好又干净的项目。

希望这有助于某人。

内部类MyLicenseCheckerCallback的noclassdeferror

3 个答案: