memory allocation/Recycle by yourself, so be careful.
In Android development, how can we effectively detect memory usage and Memory leakage?
Three methods are introduced here:
1. Program Log information
During garbage collection, the program prints a Log information logcat window. For example:
D/dalvikvm( 9050): GC_CONCURRENT freed 2049K, 65% free 3571K/9991K, external 4703K/5261K, paused 2ms+2ms
Note that the "3571 K/9991K" value in this messa
Create Android Application project: Create Android project using Eclipse's Android plugin ADT, project name Gpio, copy the project catalog to the packages/apps/folder after creation is complete, and delete the Gen folder under the project directory, without deleting the words will cause the class to repeat the error.Src/com
My classmates run javah com.cn. ndk22.Ndk22. Activity in the ndk22/bin/classes project. The. h file appears.
I am in the bin/classes directory and cannot access it,
: Error: unable to access android. app. Activity
Android. app. Activity not found
As shown in
So I went to the ndk/src directory in cmd and ran j
Http://www.ard9.com/gsjj/204.htmlFor the Android platform, the size of the icon at different resolutions have different requirements, for the current mainstream hdpi that WVGA level, usually hdpi app icon size is 72x72, and the standard mdpi that HVGA is 48x48, For the current HTC and Motorola introduced some of the QVGA used by ldpi, icon for 32x32For the
Android Tutorial is about to startSay this opened the blog, has been trying their own app, found that the TM is really uncomfortable, not easy to use, well, it was intended to give up, but see the phone there is another pit, simply re-do a bar.The original God Reply app address http://app.sohu.com/app/info?app_id=24203
Chapter 2 use C # To compile the Baidu map Android mobile app (Lecture 1 ),
Category: C #, Android; date:3.5 Example 5 -- Multi-map presentation I. Introduction
Map controls start with v2.3.5 and support multiple instances. That is, developers can create multiple map objects on a single page and operate on these objects without interfering with each other.
File N
1. Bloggers ' DailySay a long time did not update the blog, the words disappeared for a long period, say ... Your sister's, can not be so two.Well, say ... What the hell is going on, I'm not really%¥¥%* 0 ... Well, yes, that's what it's all about.One day I turn on the phone (your sister, not every day in the mobile phone), specifically to open a category folder, found inside their own before a lot of pits (in fact, they have been to do the app, but al
This article introduces some of the relevant knowledge of Android app startup, including app startup, app startup and App startup optimization!
App application startup mode
1. Cold start
When the application is started, the bac
Android issue highlights forty-seven: Error: Execution failed for task #39;: app: packageRelease #39;.) Unable to compute hash
The jna-related warnings are listed above when you encounter this problem during obfuscation compiling when using the jna jar package.You need to develop compilation rules in the proguard-rules.pro to ignore the jna-related package warnings.
-keep class com.sun.jna.** { *; }-dontw
Use Android-Debug-Database to view the App Database in the browser.
Usage reference:Http://www.jianshu.com/p/89ccae3e590bSource Code address:Https://github.com/amitshekhariitbhu/Android-Debug-DatabaseFeatures:
Add dependency:Add the following code in your build. gradle:1 debugCompile 'com. amitshekhar.
hijacking domain name IP mappings vi/etc/hosts192.168.0.105 m.ai9475.com In this way, the server's DNS hijacking is basically configured , the next step is to set up the DNS corresponding IP on the phone,
Open Network settings, Wi-Fi connection, modify network, advanced, static IP mode, modify the first NS IP, the second available normal public network DNS
Such as:Last Note: After you modify the hosts, you need to restart the DNSMASQ
, my application is integrated into the system/APP and cannot be seen in the launcher Application List.
Broadcastreceiver is one of the five important components in Android. Of course, there are two ways to implement broadcastreceiver: one is to write a class that inherits broadcastreceiver and runs it in androidmanifest. XML file registration; another method is to directly register broadcastreceiver in the
Wang Jia Lin: committed to hardware and software cloud integration, familiar with Android, HTML5, hadoop Tel: 18610086859 Email: jialingege@126.com hiheartfirst@gmail.com
HTML5YesDevice(Terminal devices) andCloudThe intersection of (cloud computing) is a perfect blend of design and technology.
HTML5Not only representativeCloud(Cloud computing ),HTML5More importantly, the source of power comes fromD
This morning to apply for a morning channel account, this job is too cumbersome, the application is the enterprise account, need business license and other relevant information, if the application of personal words estimated need ID card related information. The following post-mainstream domestic channels, not complete, but basically covers the majority.360 Mobile Open PlatformAddress: http://dev.360.cn/Pea PodsAddress: http://open.wandoujia.com/Baidu Mobile AssistantAddress: http://app.baidu.co
How does Android open another APP, androidapp?
As we all know, in an APP, The startactivity function is used to jump from one page to another.
Similarly, the redirection between applications is also true. There are three scenarios for direct jump of an application. To facilitate the description, I add two applications A and B. The requirement is to click A button
In the development of Android, sometimes due to some exceptions caused by the application error, occasionally crash due to errors, resulting in a drop in user experience, in order to solve this problem, we have to deal with such an exception: The code is as follows: Crashhandler.javaImport Android.content.context;import android.content.Intent;
Import Android.content.pm.packageinfo;import Android.content.pm.packagemanager;import Android.content.pm.pac
Android App Development-Wizards CSDN Blog client's get comment listThe previous blog introduces the details of the blog's Business logic implementation, this blog introduces the last feature of the CSDN blog client, to get a list of comments, the implementation of this feature is not the same as the previous access to the article list and the detailed content of the article, CSDN Blog to get comments throug
Address: http://blog.csdn.net/ariesjzj/article/details/7419776
This method is suitable for debugging the. So library used by the app in Android, especially when a problem occurs after loading the database. If GDB is directly loaded into the symbol table of the Dynamic Link Library, the symbol address is incorrect. In this article, an app is used as an example. Th
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