Android Tech Blog

When I adding implementation 'com.google.firebase:firebase-perf-ktx:19.1.0' I cannot start … Read more Java.lang.nosuchmethoderror: No Static Method Registerdefaultinstance With Firebase Performance And Espresso Instrumented Tests

This is related to my previous question of 'How can I clear my app's localStorage on my And… Read more Programmatically Clear Phonegap/cordova App's Cache On Android To Simulate A Fresh Install?

I was working on a 'draw with mask' app. When the user drag on the screen , it cleans part … Read more How To Get The Draw Element Size On A Cavans?

I have app one of its activity will be like texts in arabic (textview) and below each text how its … Read more Text Voice Reading

I was trying to run the following instruction, Process p = Runtime.getRuntime().exec('/system/… Read more Not Able To Run Grep Command

My DatabaseHandler Class: public class DatabaseHandler extends SQLiteOpenHelper { private stat… Read more Android Sqlite Not Updating The Data

I created a new react native project by expo init projectname command. and run that by expo start … Read more React Native With Expo:run Project On Gennymotion Problem

I have a few Activities that use the exact same methods logout() and redirect() multiple times. Wo… Read more Is It Bad Practice To Pass The Instance Of An Activity As A Parameter And Finish() It From A Different Class?

Tested on android version 7.2 . Works fine when user queries 'Check saving balance from mybank… Read more Built In Intent "actions.intent.get_account" In App Actions Not Called By User Query "check Balance In Mybank"

So here's the deal, i have an Ionic App and i'm using Azure Mobile Services with JavaScript… Read more Save Base64 Image To Mobile Services Sql Or Blob Storage?

I'm building an Android app with C++ library, and I have a problem with sending file path. I ha… Read more How To Set File Path In Android Jni?

I have a RecyclerView that displays a list of images and text that are downloaded from the internet… Read more Recyclerview Mixing Up Items

In the MainActivity I have the NavigationDrawer which looks like this: private void displayView(int… Read more Clear Backstack / History Navigationdrawer Item Selected

I like to use a PPTP VPN in the Android emulator. My VPN provider is Witopia. The settings work on … Read more How To Enable Vpn Support In Android Emulator

I am working on a project in which I am using webview to open a website. I want the application to … Read more How To Automate A Flutter Application

I'm developing an application that includes a broadcast receiver. The broadcast receiver sets a… Read more Get The Intent That Woke Up My Activity

I have a problem after upgraded to Android Studio 3.0 canary 1 from Android Studio 2.3 db.execSQL(&… Read more Android Studio 3.0 Canary 1 : Sql Syntax Error

Asking this question because I did not find solution/suggestions after searching for hours. All ans… Read more Viewpageradapter: Youtube Video Playback Stopped Due To Unauthorized Overlay On Top Of Player

I'm building a SIP Softphone using PJSIP for android based on SWIG example. I enable log as des… Read more Enabling Log In Pjsip For Android Forces Close The App

I need to create ListView with Fragment at my Sample Screen Shot View. Screen Shots are I know it … Read more Create Listview With Fragment At Dynamically In Android

Am facing some problem with edit text, actually what I need is 1st 10 letters typed should be in re… Read more Edittext With Different Color In Android

I want to test a GPS application I am developing in my android tablet, so I need to send to it spoo… Read more Send Spoof Locations With Ddms Emulator Control To A Tablet Android Device

I've set up ExoPlayer to stream audio and it works beautifully on some devices I have (eg, my N… Read more Exoplayer Doesn't Play Audio On Devices Which Use Ffmpeg

I need to play a video from daylimotion in an Android WebView, I've tried with several approuch… Read more How To Play Dailymotion Video Inside A Webview In Android

In my Acitivty i keep on switching between the fragements depending upon the user data. Now lets sa… Read more Inter Fragment Communication After Fragment Creation

I'm wonder how to use WHERE clauses to get the data from MySQL and finally load to android list… Read more Retrieve Mysql Data Using Where Clauses

I posting this again, trying to make the question/problem clearer: ListView lv; List items; Locals… Read more Arrayadapter, Listview, Creating And Updating Contents

Today i got an update for my Canary Android studio and I have updated my android studio from 3.0 Ca… Read more Gradle Project Refresh Failed Error

I have two livedatas. I need to take subtraction on them, but how to do it with two livedatas? I… Read more Livedata Mathematical Operations

public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle… Read more Cannot Find Symbol Error On Android Studio

I'm building a quotes app and i want the app to display a text on the startup page of my app, b… Read more How Can I Display A Text Perday In My Android App

I'm looking for a quick way of getting all my friends's profile pictures. I'm using the… Read more Android Getting All User's Friend Profile Pictures Quickly

Hi M new to android.I faced a problem i.e in landscape mode i need a layout view which doesnot ha… Read more Screen Orientation

I know the question line is a bit ambiguous, but I could not think of a better one. My question is… Read more Connecting An Android Phone To A Local Server W/o A Third Device

I want to be able to tap on a notification when the device is locked and launch an activity without… Read more Launch Activity When User Taps On A Notification From The Lockscreen

I am trying to draw a circle for getting positing stuff work but I don't have any luck, I am us… Read more Positing In Android Using Indooratlas

I have a bug after loading my seek bars. The thumb doesn't match with the progress value. After… Read more Thumb Doesn't Match Up With Progress (seekbar)

On the dev site, it says if your applications are signed with the same certificate you can share da… Read more Access Database Of Another App

Is it possible to write data to specific blocks in memory on the NfcV (ISO 15693) tag? E.g. write d… Read more Android Nfcv (iso 15693) Tag

When I download a apk file I need to first save it before I can install. Is there anyway to dirctly… Read more Auto Install Android App

I have table say Student .I want to updated the values in the table and it does not have any primar… Read more How To Update The Values In Table Using Realm Android?

I need to add some text in a textview with some text with red color and some are black color with a… Read more Color Is Lost After Adding String Format

I'm using commons-lang3-3.0.1.jar, in order to utilise the StrSubstitutor class. Check this out… Read more Bizarre Behaviour When Using Apache Commons Lib In Android

i am getting the following Error when i try to send a Message: HTTP ERROR 500 Problem accessing /g… Read more Accessing /gcm-demo/sendall. Reason: Http Status Code: 401

I have a PreferenceActivity that loads two Fragments via the xml file for the headers. I don't … Read more Android Honeycomb, Get Instance Of Fragments?

I have a DrawerLayout with NavigationView as shown below Copy Read more Inflating A Custom View Below Header View In Navigation View Android

I am trying to add a 3rd party library to my project. But it keeps on giving this error: Error:(10,… Read more How To Add Library In Android Studio?

i'm ready to develop my second app for android, and I want to use the database. But I'm blo… Read more Java.lang.nullpointerexception Error On A Query

When i try to build my project i got error line custom_rules.xml:63 is: line 78 is : fork='${n… Read more Build Ant Error Compile Failed; At Line Fork="${need.javac.fork}"

So my problem right now is that right now I am long clicking an item in a ListView which brings up … Read more Passing Id Of Listview Item To Actionmode.callback Object

I am trying to get the serial number of my Lenovo Idea Tab running Android. I tried all the options… Read more How To Get Real Serial Number Of Lenovo Tab In Android

I'm developing a game using Xamarin/Monogame and I need to open the keyboard on a mobile device… Read more Open On-screen Keyboard For Xamarin/monogame

I am trying to listen to the phone state when contact is calling me but i am getting some error. Se… Read more Android: Broadcastreceiver

Following this polyline decoder class from @Kenny: int[] decodedZoomLevels = PolylineDecoder.decode… Read more How Can I Get Zoom Levels To Decode A Polyline From Google Maps Directions Api?

I have a WebView in which I load a page with a custom link (like app://action). I registered the ur… Read more How To Intercept Url Loads In Webview (android)?

I am quite new to Android. I need to make an app that displays a bunch videos in an overview that g… Read more Open Youtube App From My Android App. How To Pass The Id?

how to read from a zipfile in a folder which was selected by the ACTION_OPEN_DOCUMENT_TREE Intent ?… Read more How To Read From A Zipfile In A Folder Which Was Selected By The Action_open_document_tree Intent?

i want make custome view meter which is spred when the user record the voice?? Does anyone know of … Read more How To Make Custome Record View Meter?

I just installed Android Studio and whenever I start a project (even the default 'Hello world&#… Read more Android Studio 1.2.2 Classnotfoundexception Android.widget.viewstub

I'm using JSpreadSheet to read an xlsx file from the SDCard and try as I might I cannot get the… Read more Running Into Warnings And Errors Using Jspreadsheet

I am new on firebase and while working, everything turns out to be great except for one tiny thing,… Read more Sorting Firebase Database By Timestamp Under A Key