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you need to access an external storage device, you need to request Android.permission.WRITE_EXTERNAL_STORAGE permissions, or the code will fail. The specific steps are shown below.① needs to add the appropriate permissions in the Androidmanifest.xml file of the HelloWorld application, as shown in the following code:② to add some code to create the file in the original code, as follows:public class Mainacti
Previous topic Android Development Network Request Communication Topic (i): Request communication based on HttpURLConnection we explained how to use HttpURLConnection to achieve basic text data transfer. Generally in the actual development we can be used to transfer XML or JSON-formatted data. Today we will explain another way of HTTP network request: HttpClient, and implement file upload and download.Here
I. how to correctly start the simulator (skip this step before Android 1.5): I will not talk about how to integrate android in eclipse, I don't want to talk nonsense here. To correctly start the simulation, you must first create an AVD (Android Virtual Device). You can create multiple avds, however, each of your started simulators must have an AVD so that you can
manifest file, then, the Layout Editor of the ADT will render your current Layout based on the Theme. That is to say, if the MainActivity you set has a Theme. light (others can also be used), then Theme is what you see in the visual layout manager. light. It is only used to show you what you see is what you get.② Abstract layout labels Use abstract layout labels (Include, viewstub, merge) Mainly to op
1. When importing a new Android project, a red exclamation point appears on the project name, and the program cannot run. Cause: the package path pointed to in classpath in the project is incorrect. Solution: Right-click the project name and select properties, and then select the libraries option in Java bulid path. The path marked with red X is the Error Path. After deletion, use add external jars to add the correct path. Click OK and refresh it in p
? Other mobile phones may be powerless, but powerful android phones can share files with computers through WIFI. android phones have WIFI functions, and most laptops and computers now have self-carried WIFI functions, wifi is fast and easy to use. Let's talk about how to share it! To share files with your computer through wifi, follow these steps: 1. first, make sure that the mobile phone has been connected
the sdk is located. This folder is empty. I realized that this may be the cause. I don't know why, back up the previously installed sdk, and why is this folder empty, check the backup sdk and the folder is empty. How can this problem be solved? Google build-tools accidentally found the download link of sdk build-tools. Try again, decompress it to the build-tools Folder, and restart Android SDK Manager, une
command to assign the file to the maximum operation permissions, but the system is still prompted to do not have permission. On the internet there are said to use the ADB pull command can, but tried still not, as follows:WORKAROUND: I am not rooted in the case, the need to export the file to use the command copy to the SDcard directory, and then install the "x-plore" F
changes to the Hosts file when updating the Android SDK are still unable to update, it must be extremely painful at this time. The Hosts file replaced the various IP, still can't solve!!!!!!!!!!!!!!? The first step:Open the software and wait for the server to connectStep Two:Switch to this tab after successful connectionNote: address 127.0.0.1 Port 8580 Step T
For example, to implement File Association, you must first modify AndroidManifest. xml. The example is as follows: Package = "com. android. sample" android: versionCode = "1"Android: versionName = "1.0" type = "codeph" text = "/codeph">Android: debuggable = "true">
ComponentName cn =NewComponentName (context, metadatareceiver.class); Activityinfo info = Context.getpackagemanager (). Getreceiverinfo (CN, Packagemanager.get_meta_data); Info.metaData.getString ("Meta_name");Layout.xml① adding Tools:context to a layout or control LinearLayout xmlns:android = "HTTP +/ Schemas.android.com/apk/res/android " xmlns:tools = "Http://schemas.android.com/tools" android:layout_width = "match_parent" android:layout_
Problem:Cause: The Android SDK environment variables are not configured properlyWorkaround:(1) switch to the Tools folder under the Android SDK, then execute the android command to launch the Android SDK manager, my Android SDK fo
Problem:Cause: The Android SDK environment variables are not configured properlyWorkaround:(1) switch to the tools directory under the Android SDK, then run the Android command to launch the Android SDK manager, my Android SDK dir
-get update again.Reinstall the package again, or you have the same error.Some people say you need to check Update Manager, settings (software source), update "Recommended Updates", open my, look at, have been selected.But "Unsupported Updates" is also selected, kill this.Then, in the Ubuntu software, settings (software source), Update Manager, switch "Download from" from "Chinese server" to "master server"
Sometimes, we need to test software in the intranet environment, the intranet will be more trouble when the domain name resolution, Android phone directly modify the hosts file can bring convenience.The purpose of the Hosts file is actually to say that the domain name resolves to an IP address, such as the presence of 192.168.4.77 in your hosts
The following are all converted from the android game programming entry-level classic. For details, refer to the source. game programming must not only use mobile phone memory but also access external storage space, mainly access the SD card. Read the resource file first. We know that assets/and Res/folders are used to store files that can be used in applications. Assets/is used to store files (such as con
Android Studio created simulator error emulator:ERROR:This AVD ' s configuration is missing a kernel file!! The solutionThere are two reasons: 1 No, workaround via SDK Mangager download2 cannot be found, the workaround is to look at the system environment variable path (This situation most occurs when Android studio and Eclipseadt exist simultaneously)The reason
this step, you do not need to set up WiFi, go to cell phone settings-wireless and network-WiFi settings and select your own wireless network to connect. The computer must be connected to a wireless network, and the Wi-Fi network connected to the mobile phone must be the same. Otherwise, the computer cannot be connected. 2. Install the file browser named estrongs file Explorer (ES
How to install the apk file androidapk on the Android Simulator 1. Run SDK Manager, select a simulator, and run the simulator. SDK Manager Application 2. Copy the apk file to the platform-tools directory (default: D: \ tools \ and
experiment, even if I add a few "./" does not affect the open folder. Looking at the bottom of the cocos2d-x, found that the Android part is called the NDK in the Aassetmanager_open method, only can see the header file cannot see the source code. and then we searched Google for information about the function, and there was no gain,StackOverflowQuestions.Indeed, the great God answered, and quoted on GitHub
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