different android os

Re-installation failed due to different application signatures (2013-04-20 14:27:32) reproduced Tags: workaround issues Folder Directory troubleshoot issues Category: Android I just installed the environment on another machine. When you load my app, the following occurs when the runtime:The workaround is to:Find the directory of the SDK, such as my, my directory is

Currently, there are too many android models on the market. It is very realistic and necessary to solve the problem of how to adapt your applications to different models. The solution documentation officially provided by android is analyzed and processed in three directions.(1) Support devices of Different Screen Sizes

　　Control of different text fonts in development is mainly the use of typeface objectsBecause it is a simple demo, are using the Android native components, although ugly, you can learn something is OK! (if there are errors or deficiencies, please enlighten me, thank you!) ）Let's take a look at the simple running effect.　　　　　　　　　　　　　　　That is, setting two buttons, one TextView, and clicking a

We all know that the rational use of system resources to reduce the number of systems that are not occupying too much is a question that every developer must think about. As we all know, an application is composed of a series of Activities with specific functions, they have their own attributes and behaviors. You can introduce the current process to a specific Activites by starting a shortcut in the Home, or start external Activities in other program processes. Some may ask, do you know how to s

better use two sets of resource images as much as possible; Question 2: When visual design is based on the interaction prototype, you can consider the mdpi, that is, the 320x133 blueprint for design, because Android generally uses DP as the unit, in our design, PX is usually the unit, which involves a unit conversion problem. In mdpi, the relationship between PX and DP is, in this way, the unit conversion can be easily performed when the coordinate

directly copy the code in this directory into my project's package, delete an unrelated class, directly use it, and of course I need to copy a resource file is Ids.xmlThe actual running effect, is the same as the above two ways, then its implementation by what difference, in fact, and the second way there is no big difference, basically is onitemtouchlistener plus gesture to achieve, but its logic may be more rigorous, design more excellent. In addition, there is a Itemselectionsupport class in

(R.layout.activity_main); Memptyview = (Emptyview) Findviewbyid (R.id.empty_view); Mtextview = (TextView) Findviewbyid (r.id.name); Memptyview.bindview (Mtextview);//Set BindViewMemptyview.buttonclick ( This,"LoadData");//What method to invoke when button is clickedLoadData (); }/** * Load data * / Private void LoadData() {memptyview.loading ();//Load in //2s results NewHandler (). postdelayed (NewRunnable () {@Override Public void Run() {Random r =New

Recently in the circle of friends "looking for the name of the house" and "Miles seek knife" this kind of small game comparison of fire, I tried to write a version of Android, Inside is a series of shape near the word, the realization principle is very simple: with a GridView and then each of the square can be made, Click on the correct item to change the number of rows and columns in the GridView.First, the game description:Look for

We often compile different libraries in different scenarios, and often cooperate with third parties. The other party provides static libraries, dynamic libraries, and configuration files, you may also need to provide the database to the other party and take this opportunity to summarize some of the situations used. The android. mk below is written in some templat

Project EnvironmentProject Build target:android 6.0Problem:When using the new Notification (int icon, charsequence tickertext, long when) constructor, Eclipse prompts: "The constructor Notification (int , Charsequence, long) is deprecated "The source code is as follows:/*** constructs a Notification object with the information needed to* has a status bar icon without the standard expanded view.** @param icon The resource ID of the the icon to put in the status bar.* @param tickertext the text th

All image settings in Android ViewPager listen to different images displayed in the same activity, See the previous article for monitoring all image settings in Android ViewPager. In order to save time, the two-layer menu only displays the corresponding image activity after clicking any image. The key point is how to pass parameters to the displayed activity for

of course I'm using 1.7.*************************************************************************************************************SDK (software Development (development) kit (kit refers to a lot of small pieces of a small piece of something similar to a medicine box is called kit, this refers to the tool bag))Java has SDK (that is, JDK), Android also has SDK (such as. 9.png tools, etc.)JDK (Java development Kit)JDK is the SDK for the Java language

Android calls between different processes AIDL implementation of communication services recent calls to different processes in Aidl Android have made some attempts to make calls between different applications:The steps are as follows:1: First write the service services in

This article translated from: http://developer.android.com/training/basics/supporting-devices/screens.html Android uses two attributes to classify the screen of a device: size and density. You should imagine the device screen size and density range for installing your app. For example, you should include some optional resources to optimize the display appearance of your applications on screens of different

To handle a wide range of resolutions and sizes. For images, Android uses DPI as the unit. If you select an image, right-click the image under win and you will see the DPI attribute. The higher the DPI, the finer the image. For a mobile phone or display device, a pixel is a point, so DPI = PPI. In turn, it is often said that the height and height of the phone screen PPI are equivalent to the DPI value taken into account when writing a program. The Ret

Android phone module 4.2 platform and 4.4 platform are different, android4.4 Android Phone Module Platform 4.2 Source code ModulePhone Contacts Source code pathSourcePath/package/app/Phone sourcePath/package/app/Contacts Generate apk path/System/app/Phone.apk/system/app/Contacts.apk Platform 4.4 Source code ModuleDialer InCallUI TeleService Source code pathSou

Today, someone asked me, Android system different resolution, different size of the phone, font size how to adapt it? In fact, the adaptation of the font and picture adaptation is a truth.OneThe principle is as follows:Suppose you need to adapt to 320x240,480x320 resolution. Create a new folder under the Res directory values-320x240, values-480x320. Then in the f

In the recent team project development app, there is an interface that uses WebView to display instead of native controls.The problem with developing this interface is that the fragmentation of Android results in many screen resolutions, with screens of different resolutions that are compatible with the size of the controls within the interface WebView.Because the Andro