小编Tim*_*Web的帖子

我用了Play Billing Library两个subscriptions，一个三个月。对于3按月订阅，我想显示当月的价格1。\n例如，按月1订阅是$1,50，3按月订阅是$3($1对于1)。但我对货币有一些问题。

这是一个code:

long priceAmountMicros = skuDetails.getPriceAmountMicros(); //3000000\nString priceCurrency = skuDetails.getPriceCurrencyCode(); //USD\n\nfloat priceFloat = (float)priceAmountMicros / 3 / 1000000; //1\nString price = new DecimalFormat("#0.00").format(priceFloat);\n\nCurrency currency = Currency.getInstance(priceCurrency);\nString symbolCurrency = currency.getSymbol();//$\n\ntextView.setText(price + " " + symbolCurrency); //1.00 $ or 70.00 \xd1\x80\xd1\x83\xd0\xb1\n

该代码几乎可以工作。美元兑换成美元。欧元转换为\xc2\xa3等。某些货币存在一些问题，例如俄罗斯货币无法使用。RUB转换为\xd1\x80\xd1\x83\xd0\xb1，但我期望\xe2\x82\xbd

我从 Firebase Crashlytics 收到异常

Fatal Exception: java.lang.IllegalStateException: Fragment MyFragment{122418b (05b123e6-aa8d-4de4-8f7e-49c95018234b)} not attached to a context.
       at androidx.fragment.app.Fragment.requireContext(Fragment.java:774)
       at androidx.fragment.app.Fragment.getResources(Fragment.java:838)
       at com.timskiy.pregnancy.fragments.MyFragment$1$1.run(MyFragment.java:156)
       at android.os.Handler.handleCallback(Handler.java:907)
       at android.os.Handler.dispatchMessage(Handler.java:105)
       at android.os.Looper.loop(Looper.java:216)
       at android.app.ActivityThread.main(ActivityThread.java:7625)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:524)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:987)

片段中的错误行

imageView.setColorFilter(ContextCompat.getColor(getContext(), R.color.blue));

也试过

imageView.setColorFilter(getResources().getColor(R.color.blue));

我在 Activity 和 FragmentStatePagerAdapter 中使用 viewPager。我需要在片段中使用什么上下文来 setColorFilter？谢谢

更新应用程序后，我Firebase几乎在所有活动中都会出错。

Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.project.app/com.project.app.MainActivity}: java.util.ConcurrentModificationException
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2895)
   at android.app.ActivityThread.-wrap11()
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1616)
   at android.os.Handler.dispatchMessage(Handler.java:106)
   at android.os.Looper.loop(Looper.java:176)
   at android.app.ActivityThread.main(ActivityThread.java:6651)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:824)

Caused by java.util.ConcurrentModificationException
   at androidx.collection.SimpleArrayMap.put(SimpleArrayMap.java:482)
   at com.google.android.gms.measurement.internal.zzin.zza(com.google.android.gms:play-services-measurement-impl@@17.2.2:108)
   at com.google.android.gms.measurement.internal.zzid.onActivityCreated(com.google.android.gms:play-services-measurement-impl@@17.2.2:11)
   at android.app.Application.dispatchActivityCreated(Application.java:199)
   at android.app.Activity.onCreate(Activity.java:1034)
   at androidx.core.app.ComponentActivity.onCreate(ComponentActivity.java:81)
   at androidx.activity.ComponentActivity.onCreate(ComponentActivity.java:149)
   at androidx.fragment.app.FragmentActivity.onCreate(FragmentActivity.java:313)
   at androidx.appcompat.app.AppCompatActivity.onCreate(AppCompatActivity.java:106)
   at com.project.app.MainActivity.onCreate(MainActivity.java:74)
   at android.app.Activity.performCreate(Activity.java:7088)
   at android.app.Activity.performCreate(Activity.java:7079)
   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1215)
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2895)
   at android.app.ActivityThread.-wrap11()
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1616)
   at android.os.Handler.dispatchMessage(Handler.java:106)
   at android.os.Looper.loop(Looper.java:176)
   at android.app.ActivityThread.main(ActivityThread.java:6651)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
   at …