android phone motion sensor

Android sensor (SENSOR_TYPE_ORIENTATION) SENSOR_TYPE_ORIENTATION is not recommended after android 2.2 !!! Mobile phone status Numerical status Value Range Mobile phone horizontal placement, top pointing to North The value of x, y, and z is 0.

Let's take a look at the simulation of the shaking function, we are based on the mobile phone accelerometer to achieve this function, the implementation of the method is relatively simple.Mainactivity.java:Mainactivity.java: Packagecom.location.activity;Importandroid.app.Activity;ImportAndroid.content.Context;ImportAndroid.hardware.Sensor;ImportAndroid.hardware.SensorEvent;ImportAndroid.hardware.SensorEventListener;ImportAndroid.hardware.SensorManager

The coordinate system of the Android sensor is not the same as its 2D design, with coordinate systems such as:Once the sensor listener is registered with the Sensormanager object, an object of sensorevent can be obtained within the Onsensorchanged method.The Sensorevent object has an important member variable public final float[] values, which are defined as foll

Many of the game's games in Android use the technology of gravitational induction, which is a study of gravity sensing With the bottom left of the screen as the origin, the arrow is pointing in a positive direction. From-10 to 10, with floating-point numbers as a unit, imagine the following scenario: The value of (X,y,z) is (0,0,10) when the mobile screen is horizontally positioned upward (z-axis); The value of (X,y,z) is (0,0,-10) when the cell

two, acceleration sensors and linear acceleration sensors, which one should we choose, the accelerometer provides data that is the acceleration of the mobile phone under gravity, the data provided by the linear acceleration sensor is the acceleration of the mobile phone that excludes gravity, and can intuitively reflect the force of the mobile

be passed, and the method of the fragment object to invoke its value directly.The fragment lifecycle method is the same as the life cycle method of the activity and is bound, the old fragment object is destroyed when the fragment is switched, and the new fragment object is createdFrame Animation:A picture of the continuous switch to form an animation effect, Android phone's boot interface is made by frame animationHow to use frame animations yourself

desktop repeatedly; Send messages by letter in the application drawer. It is difficult to find the desired application and the location cannot be determined; There is no uniform interaction between the horizontal screen flip and the pull-down mode of the application drawer for desktop application shortcuts, increasing the cost of thinking. Avoid multi-entry and multi-interaction in application development. You need to find the target object at the specified position. Exit Software Press

verification information to the carrier's server via text message. After the server completes the registration, the registration result will be sent to the mobile phone via text message. The content delivered varies according to different conditions.If the server sends a text message that does not contain the phone number, the phone number cannot be obtained. If

how the 1.android coordinate system defines the x, y Z axis The direction of the x-axis is the horizontal direction of the screen from left to right, if the cell phone is not a square, the shorter side needs to be placed horizontally, the longer side needs to be placed vertically. The y-axis is directed from the bottom left corner of the screen to the top of the screen along the vertical direction of the

When playing games, the general use of a variety of sensors, in order to achieve a richer UI interaction, such as the detection of mobile phone shaking.How do you measure the shaking and shaking of your phone?Some information was found and improved to encapsulate this function into a class (Shakedetector) for future use.Http://blog.csdn.net/ZhengZhiRen/archive/2010/10/09/5930451.aspxThe shake detection is b

, the word limit makes long story unattractive, and the limitations of storing data also lead to additional parsing of strings at development time. A good thing is going to be on Amazon's hands, and maybe Amazon is just trying to use it, and opening it to developers is very polite.There are more or less similar problems with other APIs, and if you want to provide support for your Fire phone, you will have to endure Amazon's limitations. But for a lot

The garden today when using Android phone to install the game, encountered the prompt "Your device does not support the add-on attribute" situation, the software will not install after the hint. This article shares the solution of "Your device does not support add-on properties" When you install software using an Android phon