.
Second, code writing
When you're ready, you can finally start writing our Hello Android, and before we start writing the code, we'll look at a few files:
Res/layout/main.xml app main form layout file, what your application looks like in this definition, there are design and text two modes
Res/values/strings.xml can be understood as a i18n file, which is used to hold various strings of program call
respect for the original:http://blog.csdn.net/yuanzeyao/article/details/41809423As an Android developer, I believe you should have heard about the limit of Android methods to 65K, and as the application function continues to enrich, someday you will encounter an exception:Conversion to Dalvik format failed:unable toexecute dex:method ID not in [0, 0xFFFF]: 65536S
: @ com.android.dx.command.dexer.Main.main (main.java:199) at Com.android.dx.command.Main.main (main.java:103)That's right. The number of Dex file methods in your app exceeds the maximum limit of 65536, so simply put, the app is bursting.So let's see why this error is caused:In the Android system. All the code for an App
This example describes the Android Desktop plugin app widget usage. Share to everyone for your reference, specific as follows:
application window Widget App Widgets
The application window widget (widget) is a tiny application view that can be embedded in other applications (such as the desktop) and receive periodic updates. You can use an
in the values/directory describe multiple resources. For a file in this directory, each child of the element defines a single resource. For example, the A element creates an R.string resource and a element creates an R.color resource.Because each resource are defined with their own XML element, you can name the file whatever you want and place different res Ource types in one file. However, for clarity, your might want to place unique resource types in different files. For example, here is s
different applications than the device unique IDs.This is often used to identify a unique ID in an app (that is, the Installtion ID), or to track the number of installs of an app.I've created a new tool class in my program to get this UUID.ImportJava.io.File;ImportJava.io.FileOutputStream;Importjava.io.IOException;ImportJava.io.RandomAccessFile;ImportJava.util.U
()
. Text ("volumes"));
Asserttrue ("Unable to detect Sound",
soundvalidation.exists ());
Getuidevice (). Presshome ();
Image
This is actually just a simple toy code, it does not make any sense, but the official as a guide, which also uses some of the most common interface. Further study in the future Uiautomator
SummarizeAdvantages:1. All operations can be automated, easy to operate;2. Do not need to be tested to sign the program, and, you can test all the equipme
your app here.Finally, you must tell Google that your application complies with their terms and compliance with U.S. export laws. It doesn't matter, as long as your app is on the market, it has to comply with U.S. export laws.6th step: Activate APKPlease switch to the "APK Files" tab and click on the Save button (in the top right corner). Make sure that at least one of the APK is active before you click th
[Reprint] How to make an Android app not be killed? FinishingOriginal Address:How to make an Android app not be killed? FinishingDrifting brocade Maple Reference: http://blog.csdn.net/windskier/article/details/6560925http://blog.csdn.net/zmyde2010/article/details/6756368Http://blog.sina.com.cn/s/blog_514048cb0100wi2j.h
There are a number of scenarios and requirements that you need to use a unique identifier for your mobile device.In Android, there are several ways to get such an ID.1. The IMEI: only valid for Android phones:
12
(telephonymanager)getsystemservice(telephony_servicetelephonymgr. Getdeviceid
With this approach, you need to
This article excerpt from:Https://blog.safaribooksonline.com/2014/01/16/advertising-id-android-kitkat/?utm_source=tuicool Beginning in August, Google would replace the Android ID with the new Google advertising ID.Because advertising ID is part of the Google Play Services pl
"Only for technical exchanges, without permission to prohibit the reprint"Usually app-server uses the HTTP protocol to tell the app what it needs to display the picture, text. This is one of the most common protocols. Another kind of client-side protocol, such as the news app, clicks on a focus story and app jumps to t
Apple app evaluation is very easy, direct request AppStore A link just fine, Android Market so much, request a link definitely not. Had always thought very troublesome, also did not study carefully, today unexpectedly found originally very simple. On the code:Uri uri = uri.parse ("market://details?id=" +new Intent (Intent.action_view, URI); Try { catch (acti
sequence numbers.
4. the last 1-digit (SP) is usually "0", which is the Verification Code and is currently in use.
The IMEI code is unique and attached to the logo on the back of the mobile phone. It is read and written to the memory of the mobile phone. It is also the "file" and "ID card number" of the mobile phone in the manufacturer ".
Application scenarios:
When the application needs to encrypt the information submitted by the user, because the I
, static variable, static method signature, instance method signature change the parent class of the current class inheritance change inherited interface list change the static initialization method of class using dynamic resource ID re-layout
Support for Cold swap (API 21 or higher): This swap is a bit slow because although a new apk is not needed, it has to restart the entire app when the code struct
Android reflection call resource and id
This topic describes how to call resources and id Using Reflection.
Raise questions:
An app has an advertisement called an app wall. An app wall pops up an Activity in your
overlays the main content when the drawer//opens Mdrawerlayout.setdrawershadow (R.D
Rawable.drawer_shadow, Gravitycompat.start);
Mdrawertoggle = new Actionbardrawertoggle (this, mdrawerlayout, R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close) {/** Called when a drawer has settled in a completely the state. */Public VO ID ondrawerclosed (view view) {Invalidateoptionsmenu ();//creates call to//Onprepa Reoptionsmenu ()}/**
This example shows how to add a simple single-page navigation, and then shows how to display all the phone numbers dialed on page 1th in page 2nd.
(1) Understand the basic architecture of the Android app through this example.
(2) This example to understand the implementation of Android multi-screen navigation basic technology.
This example is just to give us a
the tail on the APK.Google also found this security vulnerability, in the new version of the system, will be in the APK installation, check the actual size of the APK, to see if this value and the size of the APK header record of the compression package, is equal, the difference will be error said installation failed.TwoWe continue to talk about the app installation process. The Android system uses PMS to
", " Org.anddev.android.testproject "); In this way, we can do the same. int indentify = Getresources (). Getidentifier (Org.loveandroid.androidtest:drawable/icon ", null,null); 3. Carry out the package public static int Getresourceid (Context context,string name,string type,string packagename) {Resources THEMERESOURCEs=null;Packagemanager Pm=context.getpackagemanager ();try {themeresources=pm.getresourcesforapplication (packagename);Return Themeresources.getidentifier (name, type, packagenam
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