私は "getActivity（）。getPackageName（）"でproguardを有効にしている間にクラッシュしていますが、有効にしなくてもうまく動作します

Question

パッケージ名でjsoupを使用してプレイストアでバージョン名を取得しようとしています。 prograudを有効にしてビルドapkを生成するとき。パッケージ名を取得中にエラーをスローします。

私はこのコードを使用して、プレイストアからバージョン名を取得しています。

@Override 
protected String doInBackground(Void... params) { 

    String newVersion = null; 
    try { 
     Log.e("newVersion","newVersion"); 

     newVersion = Jsoup.connect("https://play.google.com/store/apps/details?id=" + getActivity().getPackageName() + "&hl=it") 
       .timeout(30000) 
       .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6") 
       .referrer("http://www.google.com") 
       .get() 
       .select("div[itemprop=softwareVersion]") 
       .first() 
       .ownText(); 

     Log.e("Jsoup.connect","Jsoup.connect"); 

     return newVersion; 
    } catch (Exception e) { 
     return newVersion; 
    } 
} 

と私のエラーは、次のとおりです。

E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1 Process: com.iroid.android.gk4success_staffnurse, PID: 14673 
java.lang.RuntimeException: An error occurred while executing doInBackground() 
    at android.os.AsyncTask$3.done(AsyncTask.java:318) 
    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354) 
    at java.util.concurrent.FutureTask.setException(FutureTask.java:223) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:242) 
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) 
    at java.lang.Thread.run(Thread.java:762) 
Caused by: java.lang.ExceptionInInitializerError 
    at org.a.b.i.a(Unknown Source) 
    at org.a.b.i$b.<clinit>(Unknown Source) 
    at org.a.b.f$a.<init>(Unknown Source) 
    at org.a.b.f.<init>(Unknown Source) 
    at org.a.c.l.b(Unknown Source) 
    at org.a.c.l.a(Unknown Source) 
    at org.a.c.b.a(Unknown Source) 
    at org.a.c.f.a(Unknown Source) 
    at org.a.a.a.a(Unknown Source) 
    at org.a.a.b$c.e(Unknown Source) 
    at org.a.a.b.a(Unknown Source) 
    at com.iroid.android.gk4success_staffnurse.f.a$9.a(Unknown Source) 
    at com.iroid.android.gk4success_staffnurse.f.a$9.doInBackground(Unknown Source) 
    at android.os.AsyncTask$2.call(AsyncTask.java:304) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)  
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)  
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)  
    at java.lang.Thread.run(Thread.java:762)  
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.io.Reader.read(char[])' on a null object reference 
    at java.util.Properties$LineReader.readLine(Properties.java:435) 
    at java.util.Properties.load0(Properties.java:354) 
    at java.util.Properties.load(Properties.java:342) 
    at org.a.b.i.d(Unknown Source) 
    at org.a.b.i.<clinit>(Unknown Source) 
    at org.a.b.i.a(Unknown Source)  
    at org.a.b.i$b.<clinit>(Unknown Source)  
    at org.a.b.f$a.<init>(Unknown Source)  
    at org.a.b.f.<init>(Unknown Source)  
    at org.a.c.l.b(Unknown Source)  
    at org.a.c.l.a(Unknown Source)  
    at org.a.c.b.a(Unknown Source)  
    at org.a.c.f.a(Unknown Source)  
    at org.a.a.a.a(Unknown Source)  
    at org.a.a.b$c.e(Unknown Source)  
    at org.a.a.b.a(Unknown Source)  
    at com.iroid.android.gk4success_staffnurse.f.a$9.a(Unknown Source)  
    at com.iroid.android.gk4success_staffnurse.f.a$9.doInBackground(Unknown Source)  
    at android.os.AsyncTask$2.call(AsyncTask.java:304)  
    at java.util.concurrent.FutureTask.run(FutureTask.java:237)  
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)  
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)  
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)  
    at java.lang.Thread.run(Thread.java:762)  

誰もがこのエラーを解決する方法を教えてくださいことはできますか？

Answer 1

このProguardに関連Jsoupエラーのようです。あなたのproguardファイルで

、

-keeppackagenames org.jsoup.nodes 

OR

-keep public class org.jsoup.** { 
public *; 
} 

Answer 2

newVersion変数を空の文字列として宣言してください。

String newVersion = "";