Not Able To Debug App In Android Studio

Question

I am making an app in Android Studio  now trying to debug it through adb  When I click on the word Android and the logo on the bottom bar  logcat comes up and recognizes my device  Then I see this      What do I need to do to my app to make it  debuggable    FYI was developing this app in Eclipse before and adb worked fine

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Also make sure you re not using other applications that might be using ADB too  like Eclipse for example

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lt application android debuggable  true  gt   lt  application gt    This no longer works  No need to use debuggable  true  in manifest    Instead  you should set the Build Variants to  debug     In Android Studio  go to BUILD -  Select Build Variant  Now try debugging  Thanks

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This worked for me    Close Android Studio  Open the shell  and write   adb kill-server  adb start-server

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I tested all ways and non of them worked      finally had to change the adb port and it worked  first kill adb server like below   adb kill-server   then restart it using another port  adb -P 5038 start-server

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If you enable    lt application android debuggable  true  gt   lt  application gt    In the application manifest xml make sure you disable it when generating the final signed apk since this can serve as a security loop hole for attackers   Only use it if only one of your applications does not show the logs  However before considering that option try this   Navigate to tools in the android studio    Tools   gt android   gt disable adb integration and again enable it

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One case where you can be unable to debug an application in Android Studio is when you have the  release  build variant selected  Happened to me - Gradle builds a release version of the app  which is not debuggable  and then Android Studio fails at trying to connect the debugger

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Restart the adb server  from android studio  Tools -   Troubleshhot Device Connection

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Be sure to enable developer mode and USB debugging on the device or emulator    Easy to forget when setting up a new one

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I did clean build using below command   Surprisingly worked      sh gradlew clean build   Hopefully someone get help

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In my case  I was trying to debug from a QA build  Change the build variant to Debug and it should work  To change the build variant  click the menu on the left bottom named  quot Build Variants quot   In case this menu is not available in your IDE you can do the following   Double click your shift button and you should see a search window popping  Type  quot Build Variants quot  as shown below   3  Now change your build to debug from QA or Release

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In my case near any line a red circle appeared with a cross and red line with a message   No executable code found at line      like in Android studio gradle breakpoint No executable code found at line   A problem appeared after updating of build gradle  We included Kotlin support  so a number of methods exceeded 64K  Problem lines   buildTypes       debug           minifyEnabled true   Change them to   buildTypes       debug           minifyEnabled false         debuggable true   Then sync a gradle with a button  Sync Project with Gradle Files   If after restarting of your application you will get an error   Error The number of method references in a  dex file cannot exceed 64K  Learn how to resolve this issue at https   developer android com tools building multidex html   then  like in The number of method references in a  dex file cannot exceed 64k API 17 add the following lines to build gradle   android        defaultConfig                           Enabling multidex support          multiDexEnabled true                  dependencies       implementation  com android support multidex 1 0 2      UPDATE  According to https   developer android com studio build multidex html do the following to enable multidex support below Android 5 0  Else it won t start in these devices   Open AndroidManifest and find tag  lt application gt   Near android name  is a reference to an Application class  Open this class  Extend Application class with MultiDexApplication so   public class MyApplication extends MultiDexApplication           If no Application class set  write so    lt application         android name  android support multidex MultiDexApplication   gt           lt  application gt

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Make sure you have enabled the ADB integration   In Menu  Tools -  Android -  Enable ADB integration   v1 0

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What worked for me in Android Studio 3 2 1  Was   RUN - gt  Attach debugger to Android Process -- gt  com my app

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I solved this issue after doing the following steps   Go to Tools   android   Disable ADB integration and enable it again   After that  unplug USB from device and plug in again    Finally press shift   F9

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Sync your project with Gradle files and that shall help

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I was able to fix it by going to Run -  Edit Configurations  selecting my project  selecting the Debugger tab  then changing  Debug type  from  Auto  to  Dual

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Over the years I have visited this thread many times and there was always a different response that helped me  This time I figure out that it s my USB hub that was preventing debugger to work properly  As strange as it sounds  instead of having a phone connected to my computer via a USB hub  I had to connect it directly to my mac and debugging started to work

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lt application android debuggable  true  gt   lt  application gt    That above code is not longer a solution  You need to enable debugging inside your build gradle file  If you have different buildTypes make sure you set  debuggable true  in one of the build types  Here is a sample code from one of my projects   buildTypes       debug           debuggable true            release           debuggable false             I have deleted other lines inside the buildTypes which are not relevant to this question from my gradle file here   Also Make sure you select the correct build variant in your android studio while doing the debugging

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This worked for me in Android Studio 3 6 3  Settings - gt  Build  Execution  Deployment - gt  Debugger - gt  Android Debug Bridge - gt  Enable  Use libs backend

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For me  it happened when I used Proguard  so by trying all the solutions I cleaned my project and pressed the debug button on Android Studio and it started debugging

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This solved my problem  Uninstall app from device and run it again via Android studio

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In my case I had the same problem because I try to debug signed apk  In my gradle config I made differents build variants  and try to debug release build with production keystore jks

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You also should have Tools- Android- Enable ADB Integration active

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Check  if you re app-project is selected in the drop-down menu next to the debug-button  Sometimes Android Studio just resets this selection

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This occasionally happens to me and I have yet to figure out why  None of the already posted solutions have worked for me  The only thing that works for me is to    Uninstall application from device  Clean Project   Build -  Clean Project   Rebuild and install

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There is a Debug icon on the toolbar  It looks like a little  bug  and is located right next to the Run icon  which looks like a play button   Try launching the application with that     Edit  The following is deprecated when using Android Studio with Gradle     There is also a debug flag in the AndroidManifest xml file  It is located under the application tag  and should be set to  true   as follows    lt application android debuggable  true  gt   lt  application gt

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I also randomly had this problem even after debugging many times in Android Studio  One day the debugger just wouldn t attach  I just had to quit Android Studio and reopen it and the debugger started working again

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Attach debugger to Android process  icon shoud be used in case when you set custom  android process  in your Manifest file   In my case I should select suitable process and click OK button just after  Wait for debugger  dialog appears

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In my case  Had to remove the proguard in debug Build Type by completely clearing the text file proguard-rules pro and making minifyEnabled false in build gradle file    debug               debuggable true             minifyEnabled false             proguardFiles getDefaultProguardFile  proguard-android txt     proguard-rules pro

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Here s a little oops that may catch some  It s pretty easy to accidentally have a filter typed in for the logcat output window  the text box with the magnifying glass  and forget about it  That which will potentially filter out all output and make it look like nothing is there

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If your Application used to be debuggable  and suddenly it s no more debuggable Here is my solution   disable and enable USB debug switch in your phone  Uninstall your application  click Run in Android Studio

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Another thing to be careful of  I did this so I know  duh   Be sure not to enable Proguard for debug

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In my case  i forgot minifyEnabled true and shrinkResources true in my debug buildType  I change these values to false  it s worked again

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I had same problem and I tried almost all kinds of solutions via Google  But I couldn t solve it  Finally  I found the solution  This is Android Studio Bug    Do not click Run  Alt   F10      just click Debug  Shift   F9    Then Android Studio will show you the Warnning Message with ADB  Then Just click  OK    You can see log in logcat console  And Packages will be shown on DDMS Devices

[android] Not Able To Debug App In Android Studio

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