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Diagnostic Tools

How to set Fiddler listening for the network calls of the applications

Nov 30, 2017
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Diagnostic Tools

Go here and download Fiddler and then install it.
Check your local IP of your PC here.
Menu => Tools => Options: Tab “Connections” settings should be as below:

OkHttpClient – Get real request/response headers log

Request headers:

I: .Sending request http://www.some_site.com/some_file.js Headers:
Host: www.some_site.com
Connection: Keep-Alive
Accept-Encoding: gzip
User-Agent: okhttp/3.8.1
If-Modified-Since: Thu, 14 Sep 2017 11:35:41 GMT

Response headers:

I: . 200 – OK => Received networkResponse for http://www.some_site.com/some_file.js in 141.2ms
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StrictMode – Detects things you might be doing by accident

Dec 11, 2015
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Diagnostic Tools

Useful diagnostic tool. It helps to find and fix performance issues, object leaks and other runtime issues.

if (BuildConfig.DEBUG) {
 StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
       .detectAll()
       .penaltyLog()
       .build());
 StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
       .detectAll()
       .penaltyLog()
       .penaltyDeathOnNetwork()
       .build());
}

Example in logs:

D: StrictMode policy violation; ~duration=19 ms: 
        android.os.StrictMode$StrictModeDiskReadViolation: 
                policy=543 violation=2
at android.os.StrictMode$AndroidBlockGuardPolicy.onReadFromDisk(StrictMode.java:1137)
at android.app.SharedPreferencesImpl.awaitLoadedLocked(SharedPreferencesImpl.java:202)
at android.app.SharedPreferencesImpl.getBoolean(SharedPreferencesImpl.java:259)
at .MyApplication.notificationToggleCheck(MyApplication.java:54)
at .MyApplication.onCreate(MyApplication.java:35)
...

http://developer.android.com/reference/android/os/StrictMode.html