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Articles on Trending Technologies
Technical articles with clear explanations and examples
Background ListView becomes black when scrolling in Android?
Before getting into listview example, we should know about listview, Listview is a collection of items pulled from arraylist, list or any databases. Most uses of listview is a collection of items in vertical format, we can scroll up/down and click on any item. Here is the simple solution to avoid Background ListView becomes black when scrolling. 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. ...
Read MoreHow to create a custom listview in android?
Before getting into listview example, we should know about listview, Listview is a collection of items pulled from arraylist, list or any databases. Most uses of listview is a collection of items in vertical format, we can scroll up/down and click on any item.What is custom listview?Custom listview works based on customAdapter. In this custom adapter we can pass custom object. We are passing subject data to listview as shown below −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 ...
Read MoreHow to display a list of images and text in a ListView in Android?
Before getting into listview example, we should know about listview, Listview is a collection of items pulled from arraylist, list or any databases. Most uses of listview is a collection of items in vertical format, we can scroll up/down and click on any item.What is custom listview?Custom listview works based on customAdapter. In this custom adapter we can pass custom object. We are passing subject data to listview as shown below.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 ...
Read MoreCan someone give one exact example of webview implementation in android
Before getting into webview implementation we should know what is webview. Webview is a extended of a view and it is used to show HTML content or web pages.Methods are available in webview.clearHistory() − it is used to clear webview historydestroy() − It is used to destroy internal state of webview.getUrl() −it is used to return current webview url.getTitle() − It is used to return current webview tittle.canGoBack() − It indicates about current webview has back history items.Using webview, it opens webview content in default android browsers. If you want to open inside of application. ShouldOverrideUrlLoading as shown below.private class ...
Read MorePass array to MySQL stored routine?
We need to create a stored procedure to display how to pass array to MySQL stored routine. Let us first create a table for our example. Creating a table mysql> create table FindDemo -> ( -> name varchar(100) -> ); Query OK, 0 rows affected (0.46 sec) Inserting some records into the table. mysql> insert into FindDemo values('John'), ('Smith'); Query OK, 2 rows affected (0.13 sec) Records: 2 Duplicates: 0 Warnings: 0 To display all records. mysql> select *from FindDemo; The following is ...
Read MoreEnhancing your logging experience with Timber in Android
Timber library is a extended library of android Log's. While developing android applications, most of developers prefer Android Logs. But here problem is about clean logs while deploy android project. To avoid this process using Timber library.This example demonstrate about how to integrate Timber 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 Timber library in build.gradle as shown belowapply plugin: 'com.android.application' android { compileSdkVersion 28 defaultConfig { applicationId "com.example.andy.myapplication" ...
Read MoreHow to handle fragmentation of auto increment ID column in MySQL?
Whenever we renumber, there might be a problem. There is a need to declare a unique ID for a column. In MySQL version 5.6 InnoDB, we can reuse the auto_increment ID by including the ID column in an INSERT statement and we can give any specific value that we want. The situations are as follows − Whenever we delete the ID with the highest number Whenever we start and stop MySQL server Whenever we insert a new record Example of ID auto increment using auto_increment variable. mysql> create table UniqueAutoId -> ( ...
Read MoreHow to create custom actionbar in android?
Before getting into example we should know what is action bar in android. Action bar just like header in android. Either we can use same action bar for all screen or we can change action bar for particular activity.This example demonstrate about how to create a custom action bar 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. Step 2 − Add the following code to src/MainActivity.javaimport android.os.Bundle; import android.support.v7.app.ActionBar; import ...
Read MoreMethods for tracking database schema changes in MySQL?
Whenever a table is present in a project with a single database, we can do database schema changes using schema version or migration. It aims to keep track of database schema changes or structural changes. The table creation to keep track of schema changes. mysql> create table SchemaDatabaseMethodDemo -> ( -> `WhenTime` timestamp not null default CURRENT_TIMESTAMP, -> `TheKey` varchar(200) not null, -> `Version` varchar(200), -> primary key(`TheKey`) -> )ENGINE=InnoDB; Query OK, 0 rows affected (0.45 sec) Inserting records into ...
Read MoreHow to Speed up Gradle build process in Android Studio?
Before getting info speed up gradle build, we should know that, what is gradle build.Before eclipse, we dont have any automation scripts to build java and XML code to android apk. So that we used commands to generate apk. To optimize this process, gradle build come into the picture. Gradle is automated script to build and generate apk using android studio. What is Gradle sync ? Gradle sync is automation process to download dependencies which are declare in gradle file. A simple example as shown below − How to speed Gradle Build in android? Step 1 − Open gradle.properties ...
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