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Android FM module learning-4 source code analysis (5) In the previous chapters, we analyzed several main class files of the FM module. What we want to analyze today is: FMTransceiver. java Public class FmTransceiver {/* Primary FM States: * FM will be in one of the 4 states at any point of time * '0'-FMState_Turned_Off * '1'-FMState_Rx_Turned_On * '2'-FMState_T

the android simulator. There is a script file build. Sh that is responsible for scheduling. All the examples in this book will have a build. Sh script file. to execute this script file, you need to ask the user to selectSource codeCompile to that platform and select 6-11 from the menu. You can enter 1, 2, or 3 to select the compilation platform. If you press the Enter key directly, the default value is 1st

In the previous article, we introduced how to create and respond to option menus in Android. Today we will explore sub-menus and Icon menus.Sub menu A sub-Menu provides a natural way to organize menu items. It is widely used in GUI Design of windows and other operating systems. Android also supports sub-menus. You can easily create and respond to sub-menus through the addsubmenu (INT groupid, int Itemid, i

cannot be scaled, and the other four blocks can be scaled ), so it is called 9.png. 3. Use Draw9Patch. jar to create a 9. PNG Image to define the stretch area.9. PNG format. Below we use the Draw9Patch provided by Google (run the Draw9Patch under the android-sdk-windowsools directory. bat. 9. PNG image.Step 1: Prepare the image to be stretched.A very small image. I want to fill in the content of the articl

1. contentprovider1. What is contentproviderContentprovider is one of the four Android components used Program To other programs.When sharing data Code Encapsulated as a method without directly exposing the data to improve security.You can register a contentobserver for contentprovider to monitor data modification in real time.2. How to create and access contentprovider *****Define the class to inherit contentprovider and register the After the progra

Android UI operations are not thread-safe, and only the main thread can operate the UI. At the same time, the main thread has a certain time limit on UI operations (up to 5 seconds ). To perform some time-consuming operations (such as downloading and opening large files), Android provides some column mechanisms. The articles in the "android basics 02-thread secur

Registration allows the application to disable listening for broadcasts that cannot or do not need to be processed. Generally, the application can register in onResume () of the Activity and register in onPause () cancel (stop listening) in the callback method ). 2> static registration: add the A simple example:1 package com. qimu. intent; 2 3 import android. app. activity;

All of the following controls only show the code of this control. The operation will be added to the original control. 1. TextView (text box ): TextView is used to display text to users. This is the most basic view. Running effect: Android: background: Set the background color Android: text sets the display content Android: textColor: Set the font col

Android, Java applications invoke the hardware Abstraction Layer module through the Jni method, on Android from hardware to application: Step-by-step 3-Hardware abstraction layer access to hardware driversWe have compiled the hardware Abstraction Layer module, the following will start to write a Jni method for the HAL layer to provide services for the upper layer

implement landing page and jump and simple registration pageFirst, let's look at the XML code for the layout login.xml　　Let's look at the first line, which is mainly about XML version information and encoding format. The next is the point, the code is written, we can see how the layout of the code is also easy to debug, then this time need to click on the graphical layout below, this is a visual editing window, we write the XML code is what it looks like, You can see it here, so this is very con

Android Camera Real-Time Filter (4), androidcameraImplementation of custom algorithms based on PS special effects on Android platform Created with Rapha rjl 2.1.2 Start Image Bitmap Get pixel getPixels

Source: http://www.imooc.com/code/1353In life, we often need to make judgments before deciding whether to do something. For example, if your test score is greater than 90, reward an IPHONE 5S. You can use the if condition statement to implement situations where you need to determine the condition before the condition is met.Syntax: Execution process:Such as:Note: If the IF condition is set when the execution statement is only one, it is possible to omit the curly brace drop! But if there are mul

Open-source Android development framework ------- PowerFramework experiences (4) Database Management DBFarmer and. netframework open-source DBFarmer is a collection of PowerFramework database management tools. Objects can be stored. Parameters added with setter and getter are included in the database. Each parameter serves as an item, and the int type id or _ id is used as the primary key. The database name

When you get to this article, you must have encountered the problem of not finding the latest photos when you need to use a local album in the Android4.4 version. Before Android4.4 in the need to obtain the phone local picture information, only need to send a broadcast update album information, but the system updated to 4.4 after the broadcast is invalid and error.The broadcast is as follows:Sendbroadcast (New Intent (intent.action_media_mounted, Uri.parse ("file://" + Environment.getexternalsto

based on actual business needs) 3) then, randomly calculate the latitude and longitude offset for this region and take an average value, 4) locate the map to obtain the current latitude and longitude, and find the offset of the corresponding region, 5) Merge the offset and display the map Advantages: Convenient and supports mainstream map suppliers Disadvantages: Only small-scale correction is supported. I

combine with RadioButton to show the effect of multiple choices? Let's look at the XML and we'll know:1 XML version= "1.0" encoding= "Utf-8"?>2 LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 android:orientation= "vertical"4 Android:layout_width= "Fill_parent"5 Android:layout_height= "Fill_parent"6 >7 Radiogroup8 Android:

settings: Setcontentview (R.layout.activity_main); Enter a new line of code to retrieve the button as follows: Thebutton = (Button) Findviewbyid (); Enter another period "." --eclipse displays a list of existing ID values. Currently we only add an ID value, select the ID name we set for the button-that is, "MyButton".You will use this method regularly to implement resource references in Java code. Now we should have the following line of code: Thebutton = (B

decoding and selection components, and supports synchronization between mainstream audio and video decoder and multi-channel media streams.4. User InterfaceMainly provides interaction interfaces between users and playersFFmpeg: it provides a complete solution for recording, conversion, and streaming audio and video. This article from: http://freewxy.iteye.com/blog/738790 Design of Streaming Media Player Based on