convert excel to android app

principle of technologyThe first way: Obfuscation strategyThe obfuscation strategy is a protection strategy that each application must add, and not only for protection, but also to reduce the size of the app installation package, so he is a feature that must be added before each app release, and now there are two common obfuscation strategies:1, the confusion of the codeAfter we decompile the APK, see the

, if we just want to decompile the Java source code for Android APK, we just need to convert the Dex file to a jar file using Dex2jar, and then use Jd-gui to interpret the code. Second, if we need to look at the Android resource file, we need to use the Android-apktool tool to decompile, the random

Top 10 tips to optimize Android App Performance No matter whether the hammer or eggplant mobile phone keeps popping up, the mobile phone market share of the Android system is still the largest, so the number of apps developed based on Android is also very large. So how can we develop a higher-performance

precautionsCheck the status of the battery and the network status before the overall update, wait for the best state to carry out large-scale operation;Let the user see electricity situation, such as update cycle, background operation;Recommendation IX: How to find layout display problemsWhen we create a UI for the layout alone, we create an app that abuses memory, and it has a nasty delay in the UI. To achieve a smooth, low-footprint UI, the first s

The context plays a very important role in the development of Android apps, Like starting an activity. You need to use the Context.startactivity method to convert an XML file to a view object, and you need to use the context object, so to speak, if you leave this class, Android is nowhere to go, how much do we know about such a class? 。 I will tell you how I feel

I mainly want to summarize the ideas about Android mobile app in the forum. I think they can be implemented or interesting, and they can be used if they are not creative in the future. I also hope to help you. If you have any good ideas, remember to comment and leave a spark of your thoughts !!!!! 1. Programming controls the short circuit of the cell phone battery and turns it into a grenade. in case of dan

(enter Linux on the ground floor)(2) Echo 3>/proc/sys/vm/drop_caches (Erase system cache)(3) top-d 1 | grep Com.baidu.BaiduMap (take Baidu map for example, print once per second resource utilization)What does each column above mean? Because of the way the compound query "pipe break" is used, you must have root privileges, otherwise grep commands are not recognized.Here we see that CMD does not show the title of the corresponding column, so we can use the top command alone to learn:As for the me

Reprint please indicate the source: a column of Maple Leaf In the previous article, we introduced the hot fixes in the Android community, and introduced several popular heat repair frameworks, as well as their pros and cons, and introduced the practice of thermal remediation in their own projects. At present, the main principle of heat repair is actually divided into two, one is through the use of DEX load order to achieve thermal repair function

Use android studio to detect app Memory leakage [reprinted] And androidapp In Android development, various memory leaks are inevitable. If you do not find and handle the vulnerabilities in time, the larger the memory usage, and various strange crash may occur due to memory leaks, the APP may even crash due to insuffici

. Use the Hierarchy Viewer tools tool that comes with the Android sdk/tools/.Another good tool is lint, which scans the application's source code for possible bugs and optimizes control results.Recommendation 10: How to fix the problemIf the layout shows a problem, you can consider simplifying the layout structure. You can convert the LinearLayout type to a relativelayout type, reducing the hierarchy of the

Android app-do not store data in the Application class, androidapplicationRecently, a serious problem was found during development. When we press the home Key of the application to run it in the background, after a while, when we open the application again, in, an NullPointException NULL pointer exception occurs. According to the logcat log, a global variable is located. Why? It turns out that we put a lot