Android

In android development, data paging is often required. For example, if you want to display a news list or a blog list, it is impossible to display all of the information when loading for the first time, in this case, the paging method is used to

Recently I learned how to operate sensors, but many books directly talk about how to set values and do not know how to distinguish the XYZ direction of different types of sensors, this article focuses on the lower-direction resolution and the small

When the phone call recording, photography, recorder, etc. all need to use the size of the T-card Hu judgment:[Java]Public static boolean isAvaiableSpace (int sizeMb ){If (android. OS. Environment. getExternalStorageState (). equals (android. OS.

Recently, I have been playing the rtmp protocol on android and compiled ffmpeg into several. after dynamically linking the so Library (how to compile ffmpeg source code in android later), you can reference the header file and directly write your own

When it comes to array sorting, many people write Bubble Sorting by themselves, which is difficult and difficult. The official team provides us with a very simple way to sort arrays quickly and well.First, implement the interface

Start to learn how to draw. First, draw the basic elements of the image, including the drawing of the dot, line, and path. The code example is as follows:1. package com. mike. activity;2.3. import android. R;4. import android. app. Activity;5.

Many developers say they do not know how to convert Drawable and Bitmap of Android. The following two simple and efficient methods are provided by Android123.1. Bitmap to Drawable Bitmap bm = xxx; // xxx is obtained based on your

Proportional scaling of the image. The first parameter is the image path, and the second parameter is the maximum value of the final image (the largest value in width and height ).[Java] // The limit value MaxSize * (2/3) = the actual use value of

In iGUI, you cannot see the control if Enable is set to false, but it is not removed. Today I will talk about how to add and delete the iGUI control in unity dynamically. 1. Add: iGUI. iGUIRoot. addElement ("iGUIProgressBar "); 2. Remove: iGUI.

In game development, there are inevitably many scheduled tasks and animation effects.These cannot be completed in one process.Under normal circumstances, I will think of using threads. But how can we use so many threads for so many scheduled tasks

Embed printable Resources Defines a plotting resource in XML, which can be embedded into another plotting resource with a specified distance. This type of resource can be used when the View object requires a lower background than its actual boundary.

A Real-time folder is a desktop component used to display data information provided by a ContentProvider. To create a real-time folder, you must have two support options. On the one hand, you need to define an Activity for creating real-time folders.

[SQL] // Set the column headers to show in the toolSqlite>. headers on // Select all rows from a tableSelect * from table1; // Count the number of rows in a tableSelect count (*) from table1; // Select a specific set of columnsSelect col1, col2 from

1. SituationGenerally, we develop more than one app, and these apps have some common modules, such as some util methods orCustom Controls. We usually copy this part of code to different projects for reuse, which brings us a lot of trouble.That is,

1. inheritance relationship Java. lang. Object |____ Android. OS. Logoff 2. class overview This class is used to return a message loop to the thread. By default, there is no message loop associated with the thread. Calling the prepare () method in

[Java] to use javamail, you must first download three JAR packages and import the project activation. jar additonnal. jar mail. jar. Import method: project-> properties-> java build path-> libraries-> add external jars Then, add the network access

Introduction to Handler, logoff, and MessageQueueHandler is used for asynchronous message processing, but Handler does not create a thread. Generally, Handler is used for communication between scheduled tasks and threads.It is most commonly used in

Previous Android RoboGuice User Guide (1): describes the basic usage of robot Guice. Roboguice is a Dependency Injection development kit developed by Android and Google Guice, the basic flowchart for developing applications using

I. Handler definition:It mainly accepts data sent by sub-threads and uses this data with the master thread to update the UI.Explanation: When an application is started, Android will first enable a main thread (that is, the UI thread). The main

1. vibrator system structure and porting content The vibrator is responsible for controlling the vibration function of the reference phone. The Vibrator System in Android is a small system dedicated to this function and provides the vibration