Android

I. Basic principles and main methods (algorithms) and technologies used in software design Algorithm: After the image is read, put the data in the array. Grayscale uses the formula of final pixel = 0.3 * R + 0.59 * B + 0.11 * G. Use 255 to subtract

When we create a project, we will use WebView to open a web, hoping that the web can call some of our own methods. For example, when we enter a web page and click a button on the web, you want to determine whether the current mobile phone is logged

Zookeeper SQLite is a very popular embedded database that supports SQL queries and uses only a small amount of memory. Android integrates SQLite at runtime, so every Android application can use the SQLite database. Using SQLite is quite simple for

  Before this article, I wrote an articleApk is a plug-in mode switch topicSo what if your boss does not accept the installation method? Next, I will introduce another method, which is to package the resource file in the main program. The analysis

One method in the MonoBehavior class is StartCoroutine, which requires an interface to return the value of IEnumerator synergy, In Unity3d, the function of collaboration is to return results immediately without affecting the execution of other

In the development of cocos2d-x, we found that SetDesignResolutionSize (960366f, 640366f, kResolutionExactFit) is not adaptive. Later, debugging found that it was not an engine problem, but in appController, when the program is started, it gets the

Recently, I was debugging a mobile phone project on the android platform, and found that the mobile phone cannot enter the STANDBY state, resulting in high power consumption,1. Capture the kernel log in the STANDBY state of the system, that is,

The factory test tool I designed is a CS structure. There is a Server on the device side, and a Client on the PC side. The two perform the test through interaction.Communication Method Selection:1. stocket: because it is not based on ADB, you can

Recently, I started to make a video player because I am interested in it. SurfaceView in full screen mode is used to play the video, but some videos can be played well while others are stretched. The video seems to be squashed. I can see an example

I personally like horizontal screen watching when watching videos, so that the video image is large, so the screen is displayed by default when I make my own player. In this way, there is no problem when playing the video recorded on the Landscape

Start the opening animation class in android, which has been encapsulated and can be used by android Developers. In this class, you can: set the opening animation image resources, return the next Activity to be started, display the opening animation,

The SDK downloaded from the official website is actually a Installation tool, which does not have any content. It will take a long time to install it online. We can also download all the things that need to be installed from the download tool on the

Original article address: Http://www.unitymanual.com/4226.html While Unity is already quite convenient when making cross-platform games, we often need to append dedicated code to handle performance and functional differences between platforms,

Someone in the group asked me how to customize the Progressbar under the Android holo topic; I think I have previously made a custom Progressbar. By writing animations and styles myself, I can use any image as a progressbar to rotate; Share with

1. In the GridView, when an Item is selected, we want to make it highlighted or enlarged. We only need to pass the corresponding position in the setOnItemClickListener () method. package com.example.sgridview;import java.util.ArrayList;import

SharedPreferences is a lightweight storage class on the Android platform. It stores common configurations such as window status and usernames and passwords for Logon in some default greeting languages. Generally, the onSaveInstanceState in the

To record how threads securely access your Android database instance, I wrote this little note. Click here for the project code referenced in the articleSuppose you have compiled your own SQLiteOpenHelper. public class DatabaseHelper extends

  File Upload is a frequently used function in our projects. Generally, our servers may be web Servers. When we use a non-browser client to upload files, such as mobile phones (Android, we may need to splice the transmitted data in a standardized

1. Disable the mysql server firewall. 2. Add the jdbc package of mysql to the libs folder. 3. the ADT and SDK versions are 16 and less than 16, and those above 17 cannot be accessed. 4. The mobile phone and mysq server l can ping each other. 5. Add

I. IntroductionWe often feel Spring is very convenient when developing J2EE projects. Therefore, when developing android, we naturally want to see if there is a similar framework. This blog mainly talks about the popular android development