FAQs in Android Google map development
These days I want to study Google map and have encountered some problems in the development process. I found many friends also encountered similar problems when searching for information on the Internet. There is no definite solution. Here I will briefly talk about my problems and solutions.
Introduction of Google map,
These are the most basic, and library and permission
Recently, I've been trying to get native MAC addresses from the NDK with C + + on Android, but with the IOCTL (SIOCGIFHWADDR), the return value is less than 0, which means that the interface information is not available. At first I thought it was my own missing access rights, so I have been increasing uses-permission, and later found that no matter how this is th
Android 6.0 dynamic permission request 1. OverviewThe permissions applied before Android 6.0 (API 23) are all granted at the time of installation, and the runtime app no longer needs to ask the user. Permissions are categorized on Android 6.0 or later, and some permissions that involve user privacy can be dynamically g
Android get contacts and android contacts
In getting started with Android, record the problems encountered in learning and some personal summaries.The contact database path is/data/com. android. providers. contacts/database/contacts2.db.Permission issues:
easier to use.1. Git installationInstall Git on Ubuntu 8.04 as long as you set the correct source for the update, and then use the apt-get on it, there is any dependency problem, let it solve it itself. Where curl is a file transfer tool that works under the command line using URL syntax, which is used when installing repo later.Java codesudo apt-get install Git-core curl
sudo apt-
Whether it is PC-side software or Android software, sometimes when sold without outright buyout or purchase of copyright, then you need a set of selling, and to ensure that the software is forbidden to copy.The software on the PC side can be added to the code to detect the hard drive serial number. In this case, it is not possible to copy to another computer because the hard drive serial number is identified incorrectly. Then in
hardware function of the call, there is no such device_id
Permissions: Get device_id need read_phone_state permission, but if we just to get it, no other call function, then this permission is a bit large to small use
BUG: On a small number of mobile devices, the implementation has a loophole, will return garb
ViewTreeObserver.OnGlobalLayoutListener() { /** * the result is pixels */ @Override public void onGlobalLayout() { Rect r = new Rect(); myLayout.getWindowVisibleDisplayFrame(r); int screenHeight = myLayout.getRootView().getHeight(); int heightDifference = screenHeight - (r.bottom - r.top); Log.e("Keyboard Size", "Size: " + heightDifference);
packaged APK file) Common error: Apktool The following information is often present during anti-compilation1.Input file is not found or is not readable.2.Destination directory (C:\Users\user\a) already exists. Use-f switch if you want to overwrite it.3.Exception in thread "main" Brut.androlib.AndrolibException:Could not decode ARS C fil .....Solution:1 and 2 is because the Apktool upgrade to more than 2.0, the use of the way has been replaced by: Apktool D [-S]-f-o, parameter specific meaning c
mark, which can usually be directly assigned a constant0You can.
Function: returns the applicationinfo object.
For more information about packagemanger, seeObtain Application (Package) Information in Android ----- use of packagemanager (1)>
Use of task,I will not go into details here. You can take a closer look at the SDK and recommend a blog here to help you understand it.
Process, task, and service information of the
Note:The original study of Android development summary, at that time written very meticulous, a lot of small things are written in, space is very large, it is suggested that students need to jump according to the directory.Technology this thing updates quickly, some content may have a better solution or tool, here I no longer note. Please understand.Reading objectsFirst Contact Java/android programming, hop
Get started with Android: GridView (jiugong figure), androidgridview
This article from http://blog.csdn.net/hellogv/
Both the GridView and ListView are commonly used multi-control la S, and the GridView is the first choice to implement the jiugong diagram! This article describes how to use the GridView to implement the jiugong diagram. The most widely used method on the Internet is to implement an ImageAdap
Android location service Introduction and how to get location information through the LocationManager objectZookeeper
1. location-Based Services (LBS), also known as Location-Based Services, integrates multiple technologies such as GPS positioning, mobile communication, and navigation, it provides comprehensive application services related to spatial locations. Location-Based Services are developing rapidly
Get your hands on Android Studio 1.3, handsandroidGet yourhands on Android Studio 1.3
Posted by Jamal Eason, Product Manager, Android
Previewed earlier this summer at Google I/O, Android Studio 1.3 is now available on the stable release channel. we appreciated the early feed
How to get the native phone number on Android, and now Android provides an API to read the number that was cured on the early SIM card,
Copy Code code as follows:
Private String Getphonenumber () {
Telephonymanager Mtelephonymgr;
Mtelephonymgr = (Telephonymanager) getsystemservice (Context.telephony_service);
return Mtelephonymgr.getline1number ();
}
Set android:shareduserid= "Android.uid.system" in Androidmanifest.xml
The Android API has the Systemclock.setcurrenttimemillis () function to modify the system time, but no matter how you call the function is useless, whether the simulator or the real machine, in the Logcat will always get "unable to Open alarm driver:permission denied ". This function requires root pe
Unique identification code This is useful in Web applications, such as checking for duplicate registrations.Import Android.provider.Settings.Secure;Private String android_id = secure.getstring (GetContext (). Getcontentresolver (), secure.android_id);We will use the unique identification code of the device more or less in the course of the project, we hope to get a stable and reliable device unique identification code. Today we will cover several ways
Prompt box} else { Toast.maketext (Mainactivity.this, "Get video thumbnail failed", Toast.length_short). Show ();//popup Message Prompt}}});}}Note: If your Android emulator version is an Android 2.x system, the file path should be changed to/mnt/sdcard/music1.mp4 or/sdcard/ Music1.mp4, it's important to note that you should open your emulator and look at the fil
video if (bitmap!=null) { Imageview.setimagebitmap (bitmap);//Set ImageView display picture Toast.maketext (mainactivity.this, "Get video thumbnail success", toast.length_ Short). Show ()//Get video thumbnail successfully, pop up message prompt box}else{toast.maketext (mainactivity.this, "Get video thumbnail failed", Toast.length_short). Show () ;//
@ Weibo daily release Android and IOS Open Source project Introduction4. AppLibraries for DevelopersDevappsdirect23code or more three are all open Source Library Rollup app,libraries for developers and devappsdirect for development prerequisites.5. OtherAndroid [email protected] CodeProjects hosted on Google Code, most of which currently have a copy on GitHubLIBRARIES [email protected] WeeklyWeekly Android
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