package access helper android

Recently in the writing of an Android project, I wrote a androidapplication global variable, which wrote some methods to get the application package name and system, but I every time when the call is an empty exception, I think I should write all write, what singleton mode, has not found the reason, Take the time to study today, it turns out I made a mistake before, originally application and Activity,serv

1. Develop Android applications to use hardware to access services ~ /Android-2.3_r1/packages/experimental/Freg ---- AndroidManifest. java ---- Android. mk ---- Src ---- Shy/luo/freg ---- Freg. java ---- Res ---- Layout ---- Main. xml ---- Values ---- String. xml ---- Drawable ----Icon.png Freg. java

Three kinds are used:Mode_private/mode_append: The two are each start to re-write, one is the append mode. But the access rights are the same for both.Mode_world_readable: Global readable mode, can be read by other applications, not recommendedMode_world_writeable: Global writable mode, can be read by other applications, not recommendedThe code tests are as follows: Packagecom.swust.access;ImportJava.io.FileOutputStream;Importandroid.app.Activity;Impo

The main channels of app monetization are advertising, value-added services, online trading. Recent projects need to be connected to Google's AdMob ad platform, which is a summary for other developers to refer to.The first step: Download Google Play services Lib via Android SDK manager, how to download, Baidu, to download the other people provideOnce downloaded, reference the LIB project to the test project study to invoke the API for Google Play serv

1, the previous example of the app in order to be able to ask Iledservice interface, Import the Classes.jar into the application, but we do not want to put classes into the APK package, so that our APK program will be very large (unzip the APK will find that there are classes.dex and classes2.dex the two optimized packages)So here's how to modify the compilation options:In Android StudioFile->project struct

1. data file access operationWe can access the data to the default storage address for Android app data, with the address: installation package/data/data/1) Write data to the filePublic FileOutputStream Openfileoutputstream (String name, int mode)Where the parameter name is the file name, mode is the data write method

Android access to Facebook share Register as a fackbook developer first. Https://developers.facebook.com Login to Facebook Developer backend and click "Apps", "Add a New app", enter the app name "Teshshare" and select category to create the app650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/54/7E/wKiom1SEYwuA2wgAAABoJ6Ic9Fg362.jpg "title=" 1.png " alt= "Wkiom1seywua2wgaaaboj6ic9fg362.jpg"/>

Xfire generates webservice. Android uses ksoap2 to access the webservice server. xfireksoap21. Preparations I ran a notebook program. Desktop Connection Network. The notebook and my mobile phone are connected to the router at the same time. If you do not have a vro or wifi, you can find another notebook and download a wifi sharing genie from the notebook. If you don't have a notebook, find a mobile phone. E

Map applications use Com.google.android.maps this package. Used by the Mapview control. But before you need to apply for a development API key, this key will be tied to the current computer user. And then through the key to the official application can get a development of the API key First run cmd, in the DOS interface, enter Keytool-list-v-keystore C:usersbystander.androiddebug.keystore command, and then let you enter the KeyStore password,

File access PermissionsAndroid 's file access control is the same as Linux. File access permissions: Who can access this file. Use drwxrwxrwx This is a character controlFirst letterD: Indicates folder-: Indicates fileEach of the following three letters is divided into a groupFirst group : rwx is the permission of the

　　　　　　　　File permissions:----------A total of 10 identifiersThe first-:d--> indicates that the folder l--> represents a shortcut-represented as a fileSection (2-4): Indicates the current user right rw-readable writable rwx readable writable executableSection (5-7): Indicates the current user group's permissionsParagraph (8-10): Represents a permission other than the current groupAs shown in the following:Private file permissions:-rw-rw----Binary 110 110 0 binary 660Readable file permissions:-rw-

Xfire generates webservice. Android uses ksoap2 to access the webservice client. xfireksoap2 Use adt to create an Android application project Confirm the information Create Interface Delete the original component Click hello world Click delete to open the xml file. The following page is displayed: Switch to view mode and add textview and button

First, let's understand the mechanism of the listener. There are two types of event-handling mechanisms for Android: listening and callbacks. A monitoring-based event handling Mainly involved in three types of objects: EventSource (event source), event (events), EventListener (event listener) The flow chart of the listening mechanism handling events is as follows (delegate: delegation): 1: Need to add permissions in the Androidmanifest.xml list

All the people of the Earth know:A)/data/app/directory itself to Su's access rights, so can not new File ("/data/app");Maybe you don't know.OfB)When the initial installation, the file is guaranteed to exist:Data/app + [package name].apkAfter overwriting the installation n times, the file name is:Data/app + [package name]-n.apkEnter the/data/app/directory with ADB

New Android project in 1.eclipse, add Mainactivity.java code: Packagecom.example.test;ImportCom.unity3d.player.UnityPlayer;Importcom.unity3d.player.UnityPlayerActivity;ImportAndroid.os.Bundle; Public classMainactivityextendsunityplayeractivity {protected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate); } Public voidSend () {Unityplayer.unitysendmessage ("AAA", "Androidcallback", "Okokoko"); }}mainactivityExport the

[Learn Android while working on projects] mobile phone security guard 07-mobile phone anti-theft access restriction, android07- Password restrictions are required when you enter the mobile phone but the anti-theft interface last time. The first time you enter the mobile phone, a dialog box is displayed prompting you to set the password. When you enter the mobile phone again, you are required to enter the pa

context GetContext () { return context; }}As you can see, the code in MyApplication is very simple. Here we rewrite the OnCreate () method of the parent class and get an application-level context by calling the Getapplicationcontext () method, and then provide a static GetContext () method, The context you just acquired is returned here.Next we need to tell the system that the MyApplication class should be initialized when the program starts, rather than the default application class. This

savedinstancestate) {//TODO auto-generated Method Stub Super. OnCreate (savedinstancestate); Setcontentview (R.layout.activity_main); Et_username= (EditText) This. Findviewbyid (R.id.et_username); Et_pwd= (EditText) This. Findviewbyid (R.ID.ET_PWD); Cb_checked= (CheckBox) This. Findviewbyid (r.id.cb_checked); Bt_login= (Button) This. Findviewbyid (R.id.bt_login); Bt_login.setonclicklistener ( This); Map This); if(Map! =NULL) {Et_username.settext (Map.get ("Username")); Et_pwd.sett

Package Com.example.sharedemo01;import Android.app.activity;import Android.content.context;import Android.content.sharedpreferences;import Android.content.sharedpreferences.editor;import Android.os.Bundle; Import Android.util.log;public class Mainactivity extends Activity {@Overrideprotected void OnCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main);// Save data to sharedpreferences,//the fi

This example for you to share the Android access to mobile phone location for your reference, the specific content as follows 1, under the project SRC Create ... service pack, then new Gpsservice class Package com.zebra.mobilesafe.service; Import java.io.IOException; Import Java.io.InputStream; Import Android.app.Service; Import android.content.