best social media apps for android

directory requires Write_external_storage permissions. Starting with Android 4.4, the directory will not be accessible to other apps, so this permission is no longer needed, and you can claim this permission only on the lower version of the Android device by adding the Maxsdkversion property, as follows:...> "android.permission.WRITE_EXTERNAL_STORAGE"

Guo XiaoxingWeibo: Guo Xiaoxing's Sina WeiboEmail:[email protected]Blog: http://blog.csdn.net/allenwellsGithub:https://github.com/allenwells In Android 4.4 and later systems, services that print pictures and text directly from Android apps, including printing pictures, HTML pages, and creating custom printed documents, are available. Print a picture

Tent.getparcelableextra (intent.extra_key_event); if (Keyevent.keycode_media_play = = Event.getkeycode ()) {//Handle Key Press. } } }}Because there may be multiple programs that are also listening to which control buttons, it is necessary to deliberately control which receiver in the code is currently responding, that is, the need for timely registration monitoring and cancellation of listening, as follows:AudioManager am = mContext.getSystemService(Context.AUD

: nullnull); mPreviewState = K_STATE_BUSY; // switch shutterBtnConfig();}2.5 Stop previewing and releasing the cameraWhen the program is finished using the camera, it is necessary to do the cleanup action. In particular, the camera object must be released, otherwise it may cause other apps to crash, including new instances of our own application. After the previewed surface is destroyed, you can stop the preview and release the cam

empty, the installation is unsuccessful.Preferexternal:The program is installed on the external storage media, but the system does not guarantee that the program will be installed on the external storage media, and when the external storage media is not available or empty, the program will be installed in memory. If the program uses the forward-locking mechanism

notification view message; The notification message should be exactly what you entered in the Firebase console:650) this.width=650; "Src=" https://s3.amazonaws.com/blog.xamarin.com/wp-content/uploads/2017/04/18134903/11- Notification-text.png "class=" AlignCenter size-full wp-image-31081 "width="-/>Congratulations, you just sent and received the first FCM push notification!Learn MoreThis simple example involves only the work that you can do with FCM and push notifications in Visual Studio. To l

According to the latest news, the number of Android apps has successfully surpassed Apple, and will be the first to break the 1 million mark. But in many many applications, but latent too many "uninvited guests". Because of the interests of the drive and the lack of relevant laws, criminals will be virus, Trojan inside the mobile phone app to spread, resulting in mobile phone crashes, personal information l

Currently, Jimu mainly provides simple development tools for Android applications, and its service objects are not limited to people who do not understand Java and other programming languages, developers can also use Jimu tools to quickly customize appropriate App modules. Linkton Ye, founder of Jimu, said: "Although a large number of App generation tools are available on the market, they only provide fixed templates for users to fill in the conten

Android software typically communicates with the server using a WiFi network. WiFi is not always reliable, for example, an open network or a weak encrypted network, the user can listen to network traffic, the attacker may set up their own wifi phishing. In addition, you can also listen for network data in the Android system after root access.The most dangerous way to transmit sensitive data unencrypted plai

, multi-function Internet Message expansion service. It is a Multipurpose Internet Mail Expansion protocol that was first applied to the e-mail system in 1992, but was later applied to the browser. A MIME type is a type of file that sets an extension that is opened by an application, and the browser automatically opens with the specified application when the extension file is accessed. Many are used to specify some client-customized file names, as well as some ways to open

policy.Scenario: If the software starts each time to read the skin files on the SD card, the speed will be slower. A good practice is to provide a skin settings interface, the user chose which skin, the skin file extracted to the "/data/data/[package Name]/skin" path, so that does not need to read across the memory, faster, And do not need to go to the zip archive every time to read, do not rely on the SD card files, even if the skin compression package files are deleted is not related.Implemen

Android software typically communicates with the server using a WiFi network. WiFi is not always reliable, for example, an open network or a weak encrypted network, the user can listen to network traffic, the attacker may set up their own wifi phishing. In addition, you can also listen for network data in the Android system after root access.Transmit sensitive data in plaintext without encryptionThe most da

In some applications, in order to implement the application of the APK resource into the reuse, or use reflection to get the resources of the application, it needs to be obtained by reflection reflection, but the resource class also comes with this method, and the function is more powerful Note that the resources mentioned here are static resources, that is, media files Android.content.res.Resources.class public int Getidentifier (string name, Strin

databases. Content provider is the preferred method for sharing data between applications. You can configure your own content Provider to allow other applications to access, or you can access the content Provider provided by other applications. Android devices contain several local content provider to provide useful databases, such as media libraries and contact information. Intent: A powerful messaging

, URI, file, resource ID, and so on. Basically meet most of the needs. Although loading local pictures is not as complex as network pictures, I recommend using glide to load local pictures. Because it is memory friendly, but also "secretly" to help us do a lot of things. For example, memory cache, bitmap multiplexing, fixed photo direction, and so on. Of course, in order to meet a variety of needs, just loading pictures is not enough, you also need to make a variety of images, that is, transform