I’m assuming you want to communicate with the remote server through API.To Send POST and GET request to the server, means to create a connection between the server and Android Application.There are many libraries to make HTTP request for example Retrofit,Volley etc, These powerful libraries make it easy to consume JSON or XML data.You can … Read more
Based on the logcat output that you have provided, the first thing you need to address is the fact that your mMap variable is null. My guess is that you’re either calling displayLocation() before the onMapReady(…) callback has fired, or your class isn’t equipped to handle the callback at all. If you’re using the Google … Read more
Well, Your app is crashes because of java.lang.RuntimeException:java.lang.NumberFormatException: Invalid double: “” that means you are trying to convert empty string to Double. So, Because the EditText is empty your app is crashes and I have re-write your code so that you can copy-paste. Here is your MainActivity.Java package com.blogspot.techtutorialsajen.androiddevelopmentpractice; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; … Read more
JUnit in version 4.x is a test framework which uses annotations to identify methods that specify a test. Typically a JUnit test is a method contained in a class which is only used for testing. This is called a Test class. To write a test with the JUnit 4.x framework you annotate a method with … Read more
Collections.rotate will do that you want String[] daysArr = { “Mon”, “Tue”, “Wed”, “Thu”, “Fri”, “Sat” }; List<String> daysList = Arrays.asList(daysArr); String input = “Fri”; int index = daysList.indexOf(input); if (index > 0) { Collections.rotate(daysList, -index); } System.out.println(daysList); Hope it helps! solved How to arrange the datas to display in array by given string of … Read more
largeHeap = “true” does not increase the heap size to or by 64 MB: Most apps should not need this and should instead focus on reducing their overall memory usage for improved performance. Enabling this also does not guarantee a fixed increase in available memory, because some devices are constrained by their total available memory. … Read more
SQLiteException: no such column: _idmoneyreasonDAte: […] while compiling: SELECT _idmoneyreasonDAte FROM MONEY_TABLE You are selecting all values of a column (called _idmoneyreasonDAte) that doesn’t exist in the table MONEY_TABLE. The bug is here: public String getData() { // TODO Auto-generated method stub String[] columns= new String[]{ KEY_ID + KEY_MONEY + KEY_REASON + KEY_DATE }; Cursor … Read more
After changing the package name application giving error ” java.lang.NullPointerException: Attempt to get length of null array” [duplicate] solved After changing the package name application giving error ” java.lang.NullPointerException: Attempt to get length of null array” [duplicate]
You have to achive this through the tileMode. put this image file on your drawable folder then drawable/dot_background.xml: <?xml version=”1.0″ encoding=”utf-8″?> <bitmap xmlns:android=”http://schemas.android.com/apk/res/android” android:src=”https://stackoverflow.com/questions/48047303/@drawable/actual_pattern_image” android:tileMode=”repeat” /> then set this xml as background on your view hope this will help help you solved How to fill with dots in a view? [closed]
You shouldn’t be messing with camera stuff in your Google Cardboard application since most google cardboard units cover the camera lense. It’s not a feature you’ll see adopted anytime soon since different devices have the camera in different places making it unreliable to create a universal headset from. Edit: Looks like the original google cardboard … Read more
You may need to put both columns in the union all: select cr_amount,Null as ‘db_amount’,created from table_credit union all select Null,db_amount,created from table_debit order by created 1 solved Read data from two tables
I couldn’t find any Android 24 when I try to update my SDK from Android Studio; 24 is an API level. It corresponds with Android 7.0. is there any drawback of compiling using Android 24? No. Is it already stable? It is neither “stable” nor “not stable”. It is a JAR exposing a set of … Read more
So here is your code in Java: public class MainActivity extends AppCompatActivity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.increase).setOnClickListener(this) findViewById(R.id.decrease).setOnClickListener(this) } public void increaseInteger() { display(Integer.parseInt(integer_number.getText().toString()) + 1); } public void decreaseInteger() { display(Integer.parseInt(integer_number.getText().toString()) – 1); } private fun display(int number) { integer_number.setText(String.valueOf(number)); } @Override protected void onClick(View v) { … Read more
Your back button closes the activity because that’s the normal behaviour. What you need to do if you want to use the back button to act as a Go back button for your WebView is: @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { yourWebView.goBack(); return true; } return super.onKeyDown(keyCode, event); … Read more
XML attributes are not compulsory. You use it according to your own convinience and need. Yes this XML will be parsed with all of the parsers. If at all the XML is valid then it will be parsed by any XML parser correctly whether it be in iOS or Android. solved Are XML attributes compulsory? … Read more