how to reduce data usage on android

Intent.It is mainly used for interaction and communication between various components of an application, and also for interaction between activities/services within the application.For example, you can call an external program in an application, call the call directly, or switch between activities in the application.It can be said that it is the essence of loose coupling of the Android architecture.Intent describes the actions, actions involving

) key functionsContext. startactivity () B) ExampleIntent intent =New intent ("com. Android. Browser", "com. Android. browser. browseractivity");Startactivity (intent ); 3. Intent CompositionIntent parameters can be multiple or fewer. The system filters out one or more interfaces suitable for rules based on different parameter combinations. 1) Caller: The following rules can be both specified or specified.C

Two optimization methods: 1. Large background image: 9.pngand 9png can not only save the APK package capacity, but also effectively save the stack memory. 2 Tips 1: use multi-resolution image design [hdpi, mdpi, ldpi, xhdpi]. UI pictures are designed with multiple specifications, such as hdpi, mdpi, ldpi, and xhdpi, which is also officially recommended. The advantage of this method is that it can reduce the peak memory and avoid memory overflow first.

Android serialization object interface Parcelable usage method, androidparcelable What is Parcelable? Parcelable defines the interfaces for writing data to Parcel and reading data from Parcel. An object (represented by a class). To encapsulate it in a message, you must implement this interface to implement this interfa

In Android Application Development, preferences, which are used as the configuration environment, are widely used. I will introduce the usage of sharedpreferences in Android in detail. Let's take a look at the effect of the configuration screen. Is the preferences page. Click set IP address to pop up the Setting Dialog Box: To facilitate sharedpreferences ma

Android-Async-Http usage recordIntroduction: Android-Async-Http is an open-source network request class library for Android. Official Project address: http://loopj.com/android-async-http /. Network requests are nothing more than retrieving

Android Sensor usage, androidsensor Use of sensor Senso in Android 1. Sensor Type Android has a variety of sensors. Currently, Android SDK supports light sensors, rotating vector sensors, pressure sensors, gyroscope sensors, acceleration sensors, Gravity Sensors, direction s

The previous article briefly introduced the implementation of Aurora push in Java server, if interested can look at the Aurora push use instance (a) Java service side. This article describes the implementation of the Aurora push in the Android client.The Jpush Android SDK is the ability to run long in the background as Android Serivice, thereby creating and maint

This example describes the ContentProvider usage of the Android content provider. Share to everyone for your reference, specific as follows: Personcontentprovider content provider Class Package com.ljq.db; Import Android.content.ContentProvider; Import Android.content.ContentUris; Import android.content.ContentValues; Import Android.content.UriMatcher; Import Android.database.Cursor; Import Android.da

class instance in JS, the second parameter is the category name exposed in JS, the reference Java object in JS is the nameIn native Java code such as the following:Mwebview.getsettings (). Setjavascriptenabled (True); Mwebview.addjavascriptinterface (new Javascriptinterface (this) , "Android"); class javascriptinterface{ Context mcontext; /** instantiate the interface and set the context * /javascriptinterface (context c) { mcontext =

Preface: A colleague consulted me about the implementation of Android DES Encryption, a simple implementation, today to sum up. Several other encryption methods:RSA encryption of Android data encryptionAES encryption of Android data encryptionDes encryption of

prompted as follows Error:but Intel Execute Disable Bit (XD) is not turned on ... (Need to turn on the system Data Execution protection function DEP, the afternoon tangled for a long time to find out.) Official website: Windows * Hosts may need to enable DEP (Data execution Prevention) in addition to Intel XD) Command line instruction: Bcdedit.exe/set NX OptIn on, requires restart Second, Download Inte

) Save the Key-value pair via the commit () method of the Sharedpreferences.editor interface (the Commit method is equivalent to the commit operation in the database transaction). 4. The process of storing data and reading data: Storing data information 1) Open a profile named configuration file, open it if it exists, or create a new configuration file named conf

Android ViewPager usage summary, androidviewpager Android-support-v4.jar is a software package provided by Google to us that is compatible with Android devices of lower versions, which contains only available APIs in Android 3.0 and above. ViewPager is one of them. With it,

here. The activity set here will return the original activityIntent intent = new Intent (context, context. getClass ());// Here we set the activity startup mode, which has four types respectively. Here we use FLAG_ACTIVITY_SINGLE_TOP to use the original activity instance instead of creating a new one when returning the result.// The current activity should be at the top of the current activity stack at this timeIntent. setFlags (Intent. FLAG_ACTIVITY_SINGLE_TOP );PendingIntent pi = PendingInten

= (RadioButton) Findviewbyid (R.id.usa_button); Find Radiogroup RG = (radiogroup) Findviewbyid (r.id.rbtngroup) by ID; Just listen to the Radiogroup rg.setoncheckedchangelisteNER (new Oncheckedchangelistener () {@Override public void oncheckedchanged (radiogroup group, int checkedid) { TODO auto-generated Method Stub if (R.id.china_button = = Checkedid) {mytextview.settext ("your Chosen country Home is: "+ chinabtn.gettext (). toString ()); else if (R.id.uk_button = = Checke

Android.os.Bundle; Import Android.widget.Toast; public class Testgesture extends activity implements ongestureperformedlistener{Gesturelibrary mlibrary; @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.main); Gestureoverlayview gestures = (gestureoverlayview) Findviewbyid (r.id.gestures); Gestures.addongestureperformedlistener (this); Mlibrary = Gesturelibraries.fromrawresource (this, r.raw.gestures);