paramsensor, int paramint) {TODO auto-generated Method Stub}};}First use the superimposed two pictures, one as the pointer, the other as the background four directions LXML file:Android:layout_width= "Match_parent"android:layout_height= "Match_parent" >Android:id= "@+id/compass_img"Android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"Android:layout_centerinparent= "true"android:src= "@drawable/compass"/>Android:id= "@+id/arrow_img
Simple tutorial for Android-46th guns (a compass for custom controls)Preface
As an innovative developer, you will sooner or later find that the built-in controls cannot satisfy your imagination.
With the ability to expand existing views, build composite controls, and create unique new views, you can create a beautiful user interface that best suits your applicati
Android practice simple tutorial-62nd guns (electronic Sensor exact Compass)
Here we use the sensor provided by the mobile phone to implement a simple small example of the electronic compass. You can learn how to use the SensorManager class, SensorEventListener and its overw
As mentioned above, the first parameter value passed back by the horizontal sensor represents the angle from which the mobile phone rotates around the Z axis, that is, the angle between the top of the mobile phone and the north. In the program, you can check the angle to implement the compass application. In fact, the idea is very simple. First prepare an image, which directs the pointer to the north. Then,
As mentioned above, the first parameter value passed back by the horizontal sensor represents the angle from which the mobile phone rotates around the Z axis, that is, the angle between the top of the mobile phone and the north. In the program, you can check the angle to implement the compass application. In fact, the idea is very simple. First prepare an image, which directs the pointer to the north. Then,
The compass has always been an indispensable and important role.
The idea of developing a compass is very simple. The program first prepares a picture of the compass so that the pointer on the picture points to the north, and then develops the sensor in the detection direction, the program detects the number of degrees
I just followed the video to learn the operation examples of sensors in Android, and made a very simple compass application using the direction sensor... Sensor functions are rarely used in work projects, so many of them don't know. Now I want to learn more about it as a step-by-step approach...
First paste the software for final operation
The image material use
Recently, when playing an app, found just entered his page, his page of the child controls are flying from the right side, feel good, the way to imitate a. It's much more comfortable to watch than to stay there!Still Feel good! Anyway, I think it's better than a stiff-looking! You guys think that!Looking at what we are imitating:Almost, just fine-tune it!The point code, in fact, is very simple:Create a new Anim folder to create a new two XMLJust put t
Step 1:Create a new project Compass and import a Compass image to the res/drawable-hdpi directory.
Step 2:Design the application UI, main. xml
Copy codeThe Code is as follows: Android: orientation = "vertical"
Android: layout_width = "fill_parent"
Android: layout_height =
data to the actual gravity coordinate. Generally, it can be set to null by default.
The third is an array of 3, indicating that the data obtained from the accelerometer is in onsensorchanged.
The fourth is an array of 3, which indicates the data obtained from the magnetic sensor.In onsensorchanged
Well, the basic logic is like this. The following is an example of a simple test direction, which can monitor the user's direction at all times.
.
The second is a conversion matrix, which converts the magnetic field data to the actual gravity coordinate. Generally, it can be set to null by default.
The third is an array of 3, indicating that the data obtained from the accelerometer is in onSensorChanged.
The fourth is an array of 3, indicating that the data obtained from the magnetic sensor is in onSensorChanged.
Well, the basic logic is like this. The following is an example of a simple test
This example shows how to add a simple single-page navigation, and then shows how to display all the phone numbers dialed on page 1th in page 2nd.
(1) Understand the basic architecture of the Android app through this example.
(2) This example to understand the implementation of Android multi-screen navigation basic t
, the proposed name-n is added, otherwise it is named by the activity name. -T can not be modified, the target ID of the project is actually the version of the Android API, we can view the project's Project.Properties, as a benchmark, as follows:[Email protected] ballgame]$ tail project.properties ... # project target.target=android-4Enter the original project ballgame directory and enter the following comm
The latest version of the SDK adds the phrase "type_orientation this constant is deprecated. Use Sensormanager.getorientation () instead. This means that the method has been canceled, and the developer uses sensormanager.getorientation () to get the original data.In fact, the Android get direction is obtained by the magnetic field sensor and the accelerometer sensor, as for the specific algorithm SDK has been encapsulated. In other words, there are tw
pendingintent = pendingintent.getactivity (context, 0, Intent,0); Remoteviews remoteviews=Newremoteviews (Context.getpackagename (), r.layout.example_appwidget); //binds the event handler to the button,//The first parameter is used to specify the ID of the bound processor control; //The second parameter is used to specify which pendingintent will be specified when the event occurs.remoteviews.setonclickpendingintent (R.id.widgetbuttonid, pendingintent); //Update AppwidgetAppwidgetmanager.update
The following original, transfer please indicate the source, thank you for your cooperation!Introduction: NAT123 is a very powerful tool, and the use of the very simple, really to help users ignore the internal and external network of the construction station services.Here is a brief introduction of how to build an intranet WCF service with NAT123, and then use an Android
Android practice simple tutorial-48th gun (App guide page effect implementation), androidapp
Kids shoes that often use apps will find that the first time they enter the APP, there will be a boot page, which can include some APP usage introductions or other information. Next
Inter-Program communication is one of the best features of Android programs. When a feature already exists in another app and is not a core feature of the program, there is absolutely no need to re-write it.This section describes some common ways to send and receive content between different programs by using intent APIs and Actionprovider objects.Lessons
Send a
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