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Before getting into example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you don't need to establish any kind of connections for it like JDBC, ODBC etc.This example demonstrate about How to get particular id records using regexp in Android sqliteStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all ... Read More
This example demonstrate about How to enable Web view session storage in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken web view to show tutorialspoint.com.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.app.ProgressDialog; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.webkit.WebChromeClient; import android.webkit.WebSettings; import android.webkit.WebView; import android.widget.EditText; public class MainActivity extends AppCompatActivity { @RequiresApi(api ... Read More
This example demonstrate about How to disable wifi in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken a text view to disable wifi.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.net.wifi.WifiManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView textView; @RequiresApi(api = Build.VERSION_CODES.N) @Override ... Read More
The add() method of the LongStream.Builder class in Java adds an element to the stream being built. The method returns this builder.The syntax is as followsdefault LongStream.Builder add(long i)Here, i is the input.To use the LongStream.Builder class in Java, import the following packageimport java.util.stream.LongStream;Create LongStream.Builder and add some elementsLongStream.Builder builder = LongStream.builder();Add some elements in the streambuilder.add(150L); builder.add(200L); builder.add(500L); builder.add(250L);The following is an example to implement LongStream.Builder add() method in JavaExample Live Demoimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream.Builder builder = LongStream.builder(); builder.add(150L); builder.add(200L); ... Read More
Before getting into the example, we should know what PriorityBlockingQueue is. It is an unbounded queue and follows the same order as a priority queue. The main usage of priority blocking queue is, it going to handle out of memory error.This example demonstrates about How to use remainingCapacity() in android PriorityBlockingQueueStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken a text view to show PriorityBlockingQueue ... Read More
Web site owners use the /robots.txt file to give instructions about their site to web robots; this is called The Robots Exclusion Protocol. This file is a simple text-based access control system for computer programs that automatically access web resources. Such programs are called spiders, crawlers, etc. The file specifies the user agent identifier followed by a list of URLs the agent may not access.For example#robots.txt Sitemap: https://example.com/sitemap.xml User-agent: * Disallow: /admin/ Disallow: /downloads/ Disallow: /media/ Disallow: /static/This file is usually put in the top-level directory of your web server.Python's urllib.robotparser module provides RobotFileParser class. It answers questions about whether ... Read More
In this section we will see the lrint() and llring() in C++. At first let us discuss about the lrint().The lrint() function is used to round the fractional given value in the argument to an integral value using current rounding mode. The current mode is determined by using fesetround().>=This lrint() function takes the double or float or integer value as input parameter, and returns the long int value by rounding the fractional part into an integral part.Example#include #include #include using namespace std; main() { int x = 40; long int res; fesetround(FE_DOWNWARD); // setting ... Read More
Before getting into an example, we should know what service is in android. Service is going to do back ground operation without interacting with UI and it works even after activity destroy.START_STICKY - If service is started with START_STICKY return type, it going to work in back ground even if activity is not foreground if android forcefully closed service due to memory problem or some other cases, it will restart service without interaction of the user.This example demonstrates How to implementing START_STICKY for a service.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and ... Read More
For returned record set order, you need to use FIND_IN_SET() function. For an example, let us create a table.mysql> create table returnRecordSetOrderDemo -> ( -> Id int, -> Name varchar(20) -> ); Query OK, 0 rows affected (1.01 sec)Insert some records in the table using insert command.The query is as follows.mysql> insert into returnRecordSetOrderDemo values(100, 'John'); Query OK, 1 row affected (0.13 sec) mysql> insert into returnRecordSetOrderDemo values(130, 'Carol'); Query OK, 1 row affected (0.13 sec) mysql> insert into returnRecordSetOrderDemo values(103, 'Bob'); Query OK, 1 row affected (0.17 sec) mysql> insert into returnRecordSetOrderDemo values(134, 'Sam'); Query OK, ... Read More
In this section, we will see how to convert C++ string (std::string) to const char* or char*. These formats are C style strings. We have a function called c_str(). This will help us to do the task. It returns a pointer to an array that contains a null-terminated sequence of characters (i.e., a C-string) representing the current value of the string object.Following is the declaration for std::string::c_str.const char* c_str() const;This function returns a pointer to an array that contains a null-terminated sequence of characters (i.e., a C-string) representing the current value of the string object. If an exception is thrown, ... Read More