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Articles by Chandu yadav
Page 63 of 81
How to use volley string request in android?
This example demonstrate about How to use simple volley request 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 text view to show response.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.widget.TextView; import android.widget.Toast; import com.android.volley.Request; import com.android.volley.RequestQueue; import com.android.volley.Response; import com.android.volley.VolleyError; import com.android.volley.toolbox.StringRequest; import com.android.volley.toolbox.Volley; public class MainActivity extends AppCompatActivity ...
Read MoreInterfacing a simple keyboard with 8085 Microprocessor
A keyboard is a very common input device. We assume that there are only eight keys for the simple keyboard. Whenever a key is pressed on this keyboard by the user, the microprocessor immediately identifies which key is pressed. The action which is to be performed by the processor depends on that particular key that gets pressed. An example to be cited as on a particular keyboard for calculator the addition operation gets performed when we press the ‘+’ key. Moreover, a microprocessor does not get directly communicated by the input device it is done via the input port. The ...
Read MoreHow to disable wifi in android?
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 MoreGet the returned record set order in MySQL IN clause?
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 MoreHow can I make a table in MySQL called “order”?
As you know, order is a keyword in MySQL, you cannot give table name order directly. You need to use backtick around the table name order. Backtick allow a user to consider the keyword as table or column name.The syntax is as followsCREATE TABLE `order` ( yourColumnName1 dataType, yourColumnName2 dataType, yourColumnName3 dataType, . . . . N );Let us create a table. The query to create a table is as followsmysql> create table `order` - > ( - > Id int, - > Price int - > ); ...
Read MoreMemory Write (MW) machine cycle in 8085 Microprocessor
In the last three clock cycles the instructions ‘MVI M, 25H’ are the example for Memory Write machine cycle. We have shown the Waveforms for MW machine cycle are shown in fig below.The address which is sent out from the register pair in a Memory Write machine cycle is completely dependent on the MW machine cycle under the consideration as it is shown in the chart below.Reg. pairExampleSPWe push the information above the top of the stack in PUSH BHLWe save register C in the memory which is pointed by HL in MOV M, CBCWe save register A register in the ...
Read MoreHow to get the second last record from a table in MySQL?
To get the record before the last one i.e. the second last record in MySQL, you need to use subquery.The syntax is as followsSELECT *FROM (SELECT *FROM yourTableName ORDER BY yourIdColumnName DESC LIMIT 2) anyAliasName ORDER BY yourIdColumnName LIMIT 1;Let us first create a table. The query to create a table is as followsmysql> create table lastRecordBeforeLastOne - > ( - > Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, - > Name varchar(20) DEFAULT 'John', - > Age int DEFAULT 18 - > ); Query OK, 0 rows affected (0.79 sec)Now you can insert some ...
Read MoreMemory speed requirement in 8085 Microprocessor
At the end of the state T2 in a machine cycle, 8085 processor senses the Ready input pin. If it is logic 0, 8085 processors enter the Twait state, else it enters to the T3 state. The Ready input is permanently fixed to logic 1. The memory chips and the Input Output ports in the system same speed with 8085. Else appropriate number of wait states should be generated by the external circuit. In fact, in the ALS kit the Ready pin should be fixed to logic 1As an example, we check up if the 27128A-20 16K×8 EPROM chip are used ...
Read MoreHow android YouTube app Play Video from Intent
In some situations, we should open you tube application from our application to show some specific video. This example demonstrate about How android YouTube app Play Video from Intent.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 text view. When you click on text view, it will open YouTube application.Step 3 − Add the following code to src/MainActivity.javapackage com.example.andy.myapplication; import android.content.ActivityNotFoundException; import android.content.Intent; import android.net.Uri; ...
Read MoreWhat MySQL databases do I have permissions on?
To check this, you can use SHOW command. The syntax is as follows −show grants\GLet us implement the above syntax to display the permissions you have −mysql> SHOW GRANTS\GThis will produce the following output −*************************** 1. row *************************** Grants for root@%: GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT, TRIGGER, CREATE TABLESPACE, CREATE ROLE, DROP ROLE ON *.* TO `root`@`%` WITH GRANT OPTION *************************** 2. row *************************** Grants for root@%: ...
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