Android Tech Blog

It seems to be a common problem, but after hours of trying random solutions provided as answers to … Read more Nullpointerexception When Accessing A Fragment's Textview In An Activity

When I create a new project selecting all defaults for a new project in Android Studio .2.5 it is n… Read more Android Framework Is Detected In The Project

I want to know how to detect hard or soft 'BACK Button' on device? I searched but mostly I … Read more How To Detect Hard/soft Back Button On Android Device?

In my android application, I am using a custom dialog. When I try to show the dialog, it causes an… Read more Android-show Custom Dialog

Background Google has recently published a new version of Android, which has a contact app that loo… Read more How To Mimic The Listview Stickey-items Like On Lollipop's Contacts App?

I have an Activity with two ImageViews set to full screen 320 x 480. I need to play an animation bu… Read more 750 Frame Transparent Png Animation In Imageview At 23fps

I need to pass the string curDate between NewDateFragment and NewEventFrament, i see many peoples u… Read more Pass String Between Two Fragments Without Using An Activity

I have been using Genymotion on OS X 10.8 but after I updated it to Mavericks, the Genymotion devic… Read more Error On Loading Genymotion Device On Os X Mavericks

I had to completely rewrite the question. I have a react native android app. When I built the apk f… Read more React Native Build Error: Package Android.support.annotation Does Not Exist

Here is my goal 1. I have only one ID send from the server with list of string separated comma … Read more Php: Insert Separated Comma String Value With As Multiple Array Value Into Mysql

I'm using the Android Paging 3 library in my project in order to load my data page by page. In … Read more Android Paging (3) Load All Pages At Once

I've been working on an app for some time, and have been testing it on many devices. Suddenly, … Read more Getexternalfilesdir() Returns Null (not A Permissions Issue)

I'm developing an app which is to be offered to many different potential customers. The idea is… Read more Android Studio: Core App With Different Wrapper For Every Customer

I have a TextView and FrameLayout inside a LinearLayout. I can't make the TextView below the fr… Read more Android - Can't Make The Textview Below The Framelayout

I am trying to get all contacts which have mobile numbers. I am able to fetch the contacts.But the … Read more How To Get Non Duplicated Phone Numbers From Android Contacts Content Provider

I have a dual-mode (BR/EDR + BLE) device running a GATT server. The address is public and same for … Read more Connectgatt On Samsung Galaxy S7 Creates Connection Over Bluetooth Classic Instead Of Ble

I don't know how it convert to the unit of pixels. For example, if I assign 10sp to my font siz… Read more Scale-independent Pixel

After yesterday's update it won't build or run project with these 2 PNG images as backgroun… Read more Android Studio Crash (aapt.exe Returns 42) When I Put Png File In Drawable Folder

i want to show image in imageview without using id. i will place all images in raw folder and open … Read more Android Show Image By Path

I have a layout activity_main.xml: Solution 1: Inside OnCreate() method define this Butt… Read more How Get Button Coordinate?

As described, my List item is a FrameLayout, there are two views inside. ColorView is a custom view… Read more Android Child View Height Not Match Parent In Listview Item

I am looking for a cron expression library in java. Something that can parse cron expressions and r… Read more Cron Library For Java

Im very new to android studio. I'm trying to make a signup page with email and password authent… Read more W/system: Ignoring Header X-firebase-locale Because Its Value Was Null

I have a Phonegap packaged application that opens a PDF Viewer when a button is pressed. I did it w… Read more Android Webview Prevent Page Reload

I'm using an AutoCompleteTextView to suggest user some words from my sqlite db as they type the… Read more How To Get String From Selected Item Of Simplecursoradapter?

I created the database in Firebase and tried to show the marker in the map. Still not working. what… Read more Retrieve Location From Firebase And Put Marker On Google Map

Hi I'm writing an Android Wear app that allows the user to control a music player from their wa… Read more Android Wear Notification Not Showing

I am getting following exception in different areas of my project. And worst thing is I have no ide… Read more Java.lang.exceptionininitializererror | Caused By: Com.b.a.c.b: 'com.b.a.b.a' Requires The 'sequence' Attribute

I'm hoping someone can find this problem. I had an app that was fully working in server commun… Read more Android Http Client Problems

if i start an emulator using the android SDK r12 it does not show up in the adb devices list win7 6… Read more Emulator Not Showing In Adb Devices

I want to implement an activity that has a fragment! when I click on Fragment1 , Fragment2 is calle… Read more Android Error: "commit Already Called" When Remove A Fragment

which code I have to put for allowing to take pictures using camera and uploading images from galle… Read more Webview App Permission For Capturing Images Using Camera And Uploading Images From Gallery

I Want to create a design like this image . I want independent scroll on both left and right side … Read more Scroll View Is Not Working Properly Android

I have a C++ Android application that I'm trying to debug with ndk-gdb. The application does u… Read more Running Ndk-gdb With Package Not Found Error On Motorola Phone

I'm following this tutorial to make and app with action bar for 2.3.x devices. But i cannot imp… Read more Appcompat V7 And Actionbaractivity

I'm developping a simple application based on WiFi Direct for Android that has to connect two d… Read more Android Wi-fi Direct: Onpeersavailable

I have successfully used TabLayout with AppCompatActivity with a CoordinatorLayout that looks close… Read more How Do I Implement Appcompatactivity With Navigationdrawer And Multiple Fragments Reusing Same Tablayout?

I am new to Gson parsing ,did some examples , but this time my json is much complex it looks like t… Read more Parsing Nested Json Objects With Gson

Anyone looking at this the below is the correct answer and I had everything setup correctly. I stil… Read more Basic Firebase Database Save

Hi In the below code I am display textview with checkboxes.Now When I am selecting single value it&… Read more How To Get The The Multiple Checkbox Values Using Custom Adapter In Android

In my application i am recording input from the microphone and at a certain point i am playing a so… Read more Recording Audio And Playing Audio At The Same Time

I am developing an app which picks an image from the gallery and then sets that image as the wallpa… Read more How To Fit The Whole Image On Screen As Wallpaper

I am writing a program that is using an android phone as a remote control via TCP/IP. The phone hos… Read more Find Ip Addresses Connected To The Android Hotspot From Java Code

Can any one please let me know whether Polymer supports Android lower versions i.e. from 2.2 I have… Read more Does Polymer Support Lower Android Versions?

The data in firebase is like the following I want to get the data tagged as userId as list or an … Read more Cannot Read Data In Firebase Database As List

I am new to android. Currently working on Caller Id app like 'truecaller'. I am showing cal… Read more Custom Dialog Box Hides Behind Another Activity

I've added the android-support-v7-appcompat,android-support-v7-mediarouter library project to b… Read more Error Inflating Class Android.support.v7.app.mediaroutebutton

I am writing a service application in Android. In this application, I am receiving commands from Ma… Read more My If Statement Doesn't Work

I know that home button cannot be stopped or override. Is there a way to extend the home button in … Read more Can We Add A Counter When Home Button Is Clicked In Android?

I'm developing an app in which some data is getting loaded from Firebase and is shown in the Re… Read more How To Place Adview Below The Recyclerview? Please See Details

I want to put a switch button into MenuItem with showAsAction='never' but it's not work… Read more Android - Set Switch Button Into Action Bar With Showasaction="never"

Wrote app for an android device whose installed Android version is Lollipop 5.1 (AZPEN A1040 tablet… Read more Xamarin Visual Studio 2015 Apk Fails To Install: Error "parsing The Package"

I am currently trying to apply a covariant return type in the following situation (code is truncate… Read more Java/android Studio - Covariant Return Type - Method In "subclass" Clashes With Method In "baseclass": Attempting To Use Incompatible Return Type

Am new for android development. I tried to create a new workspace with Target SDK as API 21 and Com… Read more Got An Error While Building A Project In New Workspace

I'm developing an Android & iOS App with cordova. Current Version there is 2.2.0. I've … Read more Android App Crashes When Push Is Received And App Is Closed

Solution 1: Create a class which extends PreferenceCategory. public class CustomPreferenceCategory… Read more How To Change Title Text-color In Preference Category

I have a range slider for prices of food , and based on the min and max of the slider , I want to d… Read more Querying By Range In Firebase

As the title says, Dagger2 is not generating the Dagger* prefixed classes for my Android project. I… Read more Dagger2 Is Not Generating Dagger* Classes

So i am trying to build an HTML5 app with the Intel xdk.Now when i build the code below as a HTML5 … Read more Speechsynthesisutterance Not Working In An Html5 App Built For Android

In my mobile app on android, user points a place where he wants to go and the path is then generate… Read more How To Get Notified When To Turn Using Google Maps?

I am a newbie to Open Street Map. I made some research and found that we can download and store the… Read more Open Street Map Working Offline Android

I was trying to create a button similar in look to the round buttons over here - http://livetools.u… Read more Create A 3d Shaped Button In Android

I am using push notification service of Parse.com. According to the doc: override onPushReceive to… Read more How To Override Onpushreceive() Of Parsepushbroadcastreceiver?