Android development of OpenGL ES 3D Space and Gldrawarrays

1. Four pyramid: consisting of 4 triangles. Square Body: composed of 6 triangles. Difficulty: When building the vertex coordinates of a 3D space, you must always have the center coordinate of the object (0.0f,0.0f,0.0f) to rotate the object around

Android automatically disables all child controls in the layout

Use scene: Disable all the child controls in the layout, so that the interface can only see, but can not edit, if a control to set up is certainly very troublesome, so think of a good method. You can extend more controls as needed, as long as you

Two-time return key exit code in Android

The code is as follows Private long exittime; @Override public boolean onKeyDown (int keycode, keyevent event) { if (keycode = = Keyevent.keycode_back && event.getaction () = = Keyevent.action_down) { if ((System.currenttimemillis ()-Exittime)

Android application Development UI Control Imageswitcher use

This article will talk about the use of Imageswitcher controls in Androidui development. Imageswitcher controls are similar to ImageView and can be used to display pictures, but Imageswitcher can be seen by name, mainly for the toggle display of

Android tweened Animation effect

The Android SDK offers three types of animations, motion tweens, frame-by-step animations, and interpolation property animations. The first animation effect-tweened animation is described below. Motion tweens can be applied to view, allowing

Set up the Android Startup interface method in the Androidmanifest.xml file

like Android Login program and android HelloWorld program, but it is not always correct to run a correct program, depressed for a long time, and finally in one Test after the success of the Android The program in the emulator that runs the self

Android am PM command

The AM PM command in the ADB shell, some of its own insights and most of its website translations. By the AM command, am full name Activity Manager, you can use AM to simulate the behavior of various systems, such as initiating a activities,

The fragment of Android Foundation and the interaction of activity

The following small series for you to introduce the relationship between fragment and activity. Need a friend to come over and refer to the next Today we continue to explain the characteristics of the fragment component, primarily with the

android dialog box pop-up location and transparency settings specific implementation method

For example, above or below the screen. To achieve this effect. You need to get the Window object for the dialog box, there are several ways to get the Window object. The easiest thing to do is to get the window object directly through the

Development in Android local video player

In the local video section of the Android local video player development, we were able to search for local video and display pictures, titles, and lengths of each video, and of course, if you needed to add other lengths and widths of video, for

Android intercepts video frames and converts them to bitmap

Mainactivity is as follows Package cn.testmediametadataretriever; Import Java.io.File; Import Java.io.FileOutputStream; Import Android.media.MediaMetadataRetriever; Import Android.os.Bundle; Import android.os.Environment; Import

Android List dialog box and progress Dialog

Main.xml Mainactivity Import android.app.Activity; Import Android.app.AlertDialog.Builder; Import Android.app.Dialog; Import Android.app.ProgressDialog; Import Android.content.DialogInterface; Import

The ArcTo method of path in Android

Declared as: void Android.graphics.Path.arcTo (RECTF oval, float startangle, float sweepangle); The method is to draw an arc of the path. The first parameter is a RECTF type. What is this parameter? First of all, how does this arc come from? It

Do you know the "point nine" in Android?

"Point Nine" is a special form of image in the application development of the Android platform, the file name extension is:. 9.png The smart phone has the function of automatic horizontal screen, the same interface will be in the mobile phone (or

Android Modify the default save path for camera photos

Camera The default save path for the photo is to be modified by opening the Storage.java Will: public static void updatedefaultdirectory (activity activity, Boolean stillcapture) { String DefaultPath = Storagemanager.getdefaultpath ();

Develop the Android Calendar tutorial

First, create Android Project In the New dialog box, enter the APP attribute, and the SDK version is all up to date, not version compatible. Theme Select Holo Dark. Next, use the default settings Next, use the

Android Mask return key and home key

Mask return key code: Public boolean onKeyDown (int keycode,keyevent event) { switch (keycode) { case KeyEvent.KEYCODE_HOME:return true; Case KeyEvent.KEYCODE_BACK:return true; Case KeyEvent.KEYCODE_CALL:return true; Case

Using double buffering technology to realize the application of Android artboard

Double buffering technology is when the user interface is complete, there will be a buffer to save the results of user operations. Why use double buffering technology? Take the Android game development, the interface is all repaint each time, also

The use of the Android GridView

The GridView is to display the control horizontally, and then display it vertically effect as shown above, look at the GridView layout file This is how to display the GridView, the following XML file is the GridView inside how to

How does Android implement data sharing between applications?

It is not important for an application to expose its own data to the outside world, to see how it is stored, to use a database or to use a file, or to access it online. It is important for the outside world to deal with this set of standards and a

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