MrBrown's Android

This tutorial will show you how to form an ATM Input EditText Let's see how to do this Create your xml with a EditText <EditText     android:id="@+id/id_edttext_amt"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:text="$0.00"     android:gravity="center"     android:inputType="number"/> Now in you activity, Implement TextWatcher for the EditText you need ATM type input private String current = ""; edtAtm.addTextChangedListener(new TextWatcher() {     @Override     public void beforeTextChanged(CharSequence s, int start, int count, int after{     }     @Override     public void onTextChanged(CharSequence s, int start, int before, int count) {         if(!s.toString().equals(current)){             edtAtm.removeTextChangedListener(this);   ...

Gesture? Gestures in android is defined as the movements of your fingers on android device screen and respond accordingly if there is any listener is implemented for gesture detection. In this article we can see how to do action by SwipeTop , SwipeBottom , SwipeRight , SwipeLeft . Let's Start Create a class  OnSwipeTouchListener public class OnSwipeTouchListener implements View.OnTouchListener { private final GestureDetector gestureDetector = new GestureDetector( new GestureListener()); public boolean onTouch( final View v, final MotionEvent event) { return gestureDetector .onTouchEvent(event); } private final class GestureListener extends GestureDetector.SimpleOnGestureListener { private static final int SWIPE_THRESHOLD = 100 ; private static final int SWIPE_VELOCITY_THRESHOLD = 100 ; @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { boolean resu...

This tutorial explains how to scan Bar-code or QR-code . We have many third party libraries and here we can see one among them zxing-android-embedded library How to use this Step 1: Add the dependency   implementation 'com.journeyapps:zxing-android-embedded:3.5.0' Step 2 : Initialize it in your activity IntentIntegrator qbScan = new IntentIntegrator(this);  Step 3: Call on button call or on any trigger qbScan.initiateScan(); For Portrait mode, in Manifest file   <activity     android:name="com.journeyapps.barcodescanner.CaptureActivity"     android:screenOrientation="portrait"     tools:replace="screenOrientation" /> _____________________________________________________________________________ Happy Coding...

Encryption is a simple way to encrypt and decrypt strings on Android This can be achieved by some third-party libraries, here we look about one among them How to use   1.  Add JitPack to your build file allprojects {   repositories {     ...     maven { url 'https://jitpack.io' }   } } 2.Add the gradle dependency compile 'com.github.simbiose:Encryption:2.0.1' 3.  Get an Encryption instance String key = "YourKey"; String salt = "YourSalt"; byte[] iv = new byte[16]; Encryption encryption = Encryption.getDefault(key, salt, iv); 4. Encrypt your text String encrypted = encryption.encryptOrNull("Text to be encrypt"); 5. Decrypt your text String decrypted = encryption.decryptOrNull(encrypted); for more ... ---------------------------------------------------------------------------------------------------------------- Happy Coding...

We will be taking a picture with this library and create a Bitmap and set it in an ImageView as follow public void onPictureTaken(CameraView cameraView, byte[] data) {      Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);      imageView.setImageBitmap(bitmap); } This will work fine on most of the devices however there are some exceptional devices too, where the picture orientation appears to be incorrectly rotated 90 degrees to the left when the device orientations is portrait. Solution to overcome this issue in your application  Trick :  Check if the  width > height  of the image then rotate by 90  Follow the steps: private static int fixOrientation(Bitmap bitmap) {         if (bitmap.getWidth() > bitmap.getHeight()) {             return 90;    ...

If your app need an underline for the text in TextView  Achieve it in simple way  - (By both xml and code part) xml It can be achieved if you are using a string resource xml file, which supports HTML tags like <b></b>, <i></i> and <u></u> <resources> <string name = "your_string_here" > This is an <u> underline </u> . </string> </resources> Code Way - 1 TextView textView = ( TextView ) view . findViewById ( R . id . textview ); SpannableString content = new SpannableString ( "Hello, Android !!!" ); content . setSpan ( new UnderlineSpan (), 0 , content . length (), 0 ); textView . setText ( content ); Way - 2 textview . setPaintFlags ( textview . getPaintFlags ()| Paint . UNDERLINE_TEXT_FLAG ); Way - 3 textview . setText ( Html . fromHtml ( "<u>Text to underline</u>" ));

What is the need through Wi-Fi? i. This will save your phone from irregular charges. ii. A remedy for short length USB cables  There are several methods to achieve this, here we can see how to do with the plugin. A better method through Android-Studio plugin Follow the steps to achieve this: 1 ) A plugin for Android studio exits , called    ADB WiFi Connect.      (There are some other plugin such as  WiFi ADB ULTIMATE,  Android wifi ADB ) 2) Go to file -> settings -> Plugins -> Browse Repositories 3) Look for  ADB WiFi Connect  , click on INSTALL , and then restart on prompt 4) You will see a new icon , which is your new plugin. Like in an image Now to make this work : 5) Go to your phone's developer option and enable DEBUGGING (must) 6) Also enable , ALLOW DEBUG OVER TCP/NETWORK 7) Attach your phone via USB , and make sure, both phone and your PC/laptop are connected to the same network (ei...

Are you fed up of Custom Views to set fonts? Or traversing the ViewTree to find TextViews? Sometime we want some other font for our Android application then you can add custom font in Android using Calligraphy library . Dependency Include the dependency Download (.aar) dependencies { compile ‘uk.co.chrisjenx:calligraphy:2.2.0’ } Add Fonts Add your custom fonts to assets/ . All font definitions are relative to this path. On Assets you should right-click New Directory, call it "fonts". In the finder put the .ttf  or .otf  font files in there. Create Class Create a class that extends Application and write this code public class App extends Application { @Override public void onCreate() { super.onCreate(); CalligraphyConfig.initDefault(new CalligraphyConfig.Builder() .setDefaultFontPath("your font path") .setFontAttrId(...