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我一直在尝试对我的应用实施应用内购买，但由于某种原因，每次我尝试开始测试购买时，应用都会退出到主屏幕。

08-04 18:01:00.659: W/dalvikvm(10597): threadid=17: thread exiting with uncaught exception (group=0x40fd32a0)
08-04 18:01:00.659: D/AndroidRuntime(10597): Shutting down VM
08-04 18:01:00.659: W/dalvikvm(10597): threadid=1: thread exiting with uncaught exception (group=0x40fd32a0)

这是我的 logcat，我没有收到错误，所以我不知道我在这里做错了什么..

这是可能导致错误的.java：

package com.mitonanetherlands.buttonchooser;

import java.util.ArrayList;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.IntentSender.SendIntentException;
import android.content.ServiceConnection;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import com.android.vending.billing.IInAppBillingService;
import com.mopub.mobileads.MoPubView;

public class BuyPremium extends Activity {

    public static int calculateInSampleSize(BitmapFactory.Options options,
            int reqWidth, int reqHeight) {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {

            // Calculate ratios of height and width to requested height and
            // width
            final int heightRatio = Math.round((float) height
                    / (float) reqHeight);
            final int widthRatio = Math.round((float) width / (float) reqWidth);

            // Choose the smallest ratio as inSampleSize value, this will
            // guarantee
            // a final image with both dimensions larger than or equal to the
            // requested height and width.
            inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
        }

        return inSampleSize;
    }

    public static Bitmap decodeSampledBitmapFromResource(Resources res,
            int resId, int reqWidth, int reqHeight) {

        // First decode with inJustDecodeBounds=true to check dimensions
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeResource(res, resId, options);

        // Calculate inSampleSize
        options.inSampleSize = calculateInSampleSize(options, reqWidth,
                reqHeight);

        // Decode bitmap with inSampleSize set
        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeResource(res, resId, options);
    }

    MoPubView ad1;
    SharedPreferences completedLevels;
    Bundle querySku = new Bundle();
    Bundle skuDetails;
    String sku;
    String price;
    Bundle buyIntentBundle;
    IInAppBillingService mService;
    ServiceConnection mServiceConn = new ServiceConnection() {
        @Override
        public void onServiceDisconnected(ComponentName name) {
            mService = null;
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            mService = IInAppBillingService.Stub.asInterface(service);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.buypremium);

        ImageView thankyou = (ImageView) findViewById(R.id.thankyou);
        thankyou.setImageBitmap(decodeSampledBitmapFromResource(getResources(),
                R.drawable.thank_you, 450, 600));
        ad1 = (MoPubView) findViewById(R.id.adviewpremium);
        ad1.setAdUnitId("d95782d0c22011e295fa123138070049");
        ad1.loadAd();
        bindService(new Intent(
                "com.android.vending.bulling.InAppBillingService.BIND"),
                mServiceConn, Context.BIND_AUTO_CREATE);

        Button backtomain = (Button) findViewById(R.id.BackToMenu);
        backtomain.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                startActivity(new Intent(
                        "com.mitonanetherlands.buttonchooser.MAINMENU"));
            }
        });

        Button BuyPremium = (Button) findViewById(R.id.BuyButton);
        BuyPremium.setOnClickListener(new View.OnClickListener() {

            @SuppressWarnings("unused")
            @Override
            public void onClick(View arg0) {
                ArrayList<String> skuList = new ArrayList<String>();
                skuList.add("pemiumUpgrade");

                querySku.putStringArrayList("premium_apartment_life", skuList);
                Thread myThread = new Thread(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            Bundle skuDetails = mService.getSkuDetails(3,
                                    getPackageName(), "inapp", querySku);
                        } catch (RemoteException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                });
                myThread.start();
                int response = skuDetails.getInt("RESPONSE_CODE");
                if (response == 0) {
                   ArrayList<String> responseList 
                      = skuDetails.getStringArrayList("DETAILS_LIST");

                   for (String thisResponse : responseList) {
                      JSONObject object = null;
                    try {
                        object = new JSONObject(thisResponse);
                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                      try {
                        String sku = object.getString("productId");
                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                      try {
                        String price = object.getString("price");
                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                   }
                }
                try {
                    Bundle buyIntentBundle = mService.getBuyIntent(3, getPackageName(), sku, "inapp","Premium is aangekocht!");
                } catch (RemoteException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                PendingIntent pendingIntent = buyIntentBundle.getParcelable("BUY_INTENT");
                try {
                    startIntentSenderForResult(pendingIntent.getIntentSender(), 1001, new Intent(), Integer.valueOf(0),Integer.valueOf(0), Integer.valueOf(0));
                } catch (SendIntentException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

        });


    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        ad1.destroy();
        if (mServiceConn != null) {
            unbindService(mServiceConn);
        }
    }
    @SuppressWarnings("unused")
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
       if (requestCode == 1001) {     
        int responseCode = data.getIntExtra("RESPONSE_CODE", 0);
          String purchaseData = data.getStringExtra("INAPP_PURCHASE_DATA");
          String dataSignature = data.getStringExtra("INAPP_DATA_SIGNATURE");

          if (resultCode == RESULT_OK) {
             try {
                JSONObject jo = new JSONObject(purchaseData);
                String sku = jo.getString("productId");
                Toast.makeText(this,"You have bought the " + sku + ". Excellent choice!", Toast.LENGTH_LONG).show();
                SharedPreferences.Editor editor = completedLevels.edit();
                editor.putBoolean("Paid", true).commit();

              }
              catch (JSONException e) {
                    Toast.makeText(this,"Failed to Parse data", Toast.LENGTH_LONG).show();
                 e.printStackTrace();
              }
          }
       }
    }
}

有任何想法吗？

4

1 回答 1

0

您的代码中有几件事可能出错了。

保证会使您的应用程序崩溃的一件事：

Bundle skuDetails = null;

public void onClick(View arg0) {
    int response = skuDetails.getInt("RESPONSE_CODE");
}

NullPointerException每当您单击时，这是有保证的。您打算让线程skuDetails已经分配了一些东西，但没有：

  • 它使用自己的局部变量：Bundle skuDetails = mService.get..
  • 即使您从线程中使用正确的变量，它也不会skuDetails在此时完成分配值。它并行运行，无法保证何时完成。

您在这里要做的是在该后台线程中进行所有处理（启动线程后在 onclick 中完成的所有操作）或使用AsyncTask在后台读取和处理（doInBackground）然后使用 UI 线程中处理的数据来做最后的步骤 ( onPostExecute(data returned from doInBackground))。

还有其他有问题的事情。例如mService，仍然可能是null或null再次，因为服务未绑定。

IInAppBillingService mService = null;
bindService(...); -> causes assignment to `mService` at unknown time in future.

无法保证 mService 何时可以安全使用。应用程序初始化后的一段时间，但仍然可能是在用户按下按钮之后，您的线程可能会因为NullPointerException. 检查您是否没有访问null.

于 2013-08-04T17:20:48.657 回答