android studio logcat does not show the reason of crashes when i run my app on a real phone

Question

I have a strange problem. when I run my app on Genymotion with android 4.1, everything is good and Logcat works fine and shows everything. but when I run the same app on a real phone(Huawei honour 7 with Android 6), and my app gets crash, logCat does not show the reason for that crash. in the other word, log cat does not show Exceptions. can anyonehelp me?thanks

maybe be useful:

logCat After a crash:

build.gradle(module app)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "my.application.id"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    ....
}

Some times android Studio can't detect the android phone, you can install driver of that phone to your system. — Abhishek kumar, Feb 05 '18 at 11:15
How do you installing your app to the phone .??By android studio debug or another source @Hadi — Abhishek kumar, Feb 05 '18 at 11:17
@Abhishekkumar but when i myself print a log by Log.i, logCat shows that log. but does not show Exceptions like NullPointException, fileNotFoundException, sslException , etc — Hadi, Feb 05 '18 at 11:19
At right side of the logcat select Show only Selected application. — Abhishek kumar, Feb 05 '18 at 11:22
@Abhishekkumar I have tried that but the result was the same. — Hadi, Feb 05 '18 at 11:23
Check on regex and select error , if not then close android studio and again open. — Abhishek kumar, Feb 05 '18 at 11:26
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/164557/discussion-between-abhishek-kumar-and-hadi). — Abhishek kumar, Feb 05 '18 at 11:46

Abhishek kumar · Answer 1 · 2018-02-05T16:35:19.067

8

Best way to fix this to invalidate caches, may it will worked for you.

Go to FILE -> click "INVALIDATE CACHES/RESTART" then a dialog box will pop-up, Select "INVALIDATE CACHES/RESTART" button.

Android studio will automatically restart and rebuild the index.

or,

You can do the following things.

Restart logcat
Change from verbose to debug/error.
The last (Checked the regex ) Change the regex to show selected options only.

or, Look into this Logcat not showing errors from my Huawei P9 phone

edited Feb 05 '18 at 16:35

answered Feb 05 '18 at 11:45

Abhishek kumar

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i tried all but now workd. the post edited. I've attached a screen of logcat after a crash. – Hadi Feb 05 '18 at 14:24
i tried all but not worked. the post edited. I've attached a screen of logcat after a crash. – Hadi Feb 05 '18 at 15:45
thanks my friend. my problem solved with https://stackoverflow.com/questions/42691076/logcat-not-showing-errors-from-my-huawei-p9-phone/43557441. thanks a lot. – Hadi Feb 05 '18 at 16:10
2

Welcome, @Hadi , on my first comment i already told its phone issue BTW, Happy Coding.. – Abhishek kumar Feb 05 '18 at 16:34

android studio logcat does not show the reason of crashes when i run my app on a real phone

1 Answers1