Android

Preface This chapter is the developer Guide (Dev Guide)/Developing/Tools/aidl, version Android2.3 r1, translated from "Mobile cloud _ Wenbin", welcome to its blog: "http://blog.csdn.net/caowenbin ", thanks again for "Mobile cloud _ Wenbin "! We look

In the apk, sometimes the root permission is required, such as updating system files such as system files through the apk, to avoid upgrading the firmware or directly accessing certain devices in the apk. The following method is used to obtain the

Ding Lang suggestion: before learning this instance, Please master the Activity lifecycle related events and methods, so that the learning effect will be better. This instance is for reference only and is not a perfect product. Due to time and

The APIs that have been being called recently are found to be unsuccessful and have been entangled for a long time. For more information, see tutorials and official documents, three steps are required. 1. Apply for App_ID 2. Enter the package name. 3

I have been learning about android wifi for a week. Today, I will post my daily learning achievements for future reference, from the framework to the adaptation layer of wpa_supplicant (wifi. c) There are many posts on the Internet, and they are not

[Java] [java] recently I have been studying service controls. The front-end service and the service bound to the local control are easy to understand, and I have hardly encountered any problems, however, when remotely calling the service, the system

Android file storage-use SharedPreferences to save user preference setting parameters and read setting parameters   What file storage technologies does Android SDK support? 1. Use SharedPreferences to save key-value data 2. Stream file storage

Android development and use of local memory, built-in memory cards and external memory cards ------------------------------------------ about android memory Introduction: android development often involves data caching, which requires us to

Error: java.net. connectException: failed to connect /***. ***. ***. * ** (port 80): connect failed: EHOSTUNREACH (No route to host) Error: java.net. connectException: failed to connect /***. ***. ***. * ** (port 80): connect failed: EHOSTUNREACH

Android bitmap compressWith the development of mobile phone hardware, android camera functions become more and more powerful, and can find high-resolution images.In some scenarios, you need to take photos and upload them to the service. However,

1. Because you need to delete files, you need the following permissions: 2. Core code [Java]Package com. example. deleteyoumi; Import java. io. File; Import android. OS. Bundle;Import android. OS. Handler;Import android. OS. Message;Import android.

1. view the mechanism of SMS re-sending: main log: the re-transmission will be performed in hanldeSmsSent () only when the sending fails due to radio off or no service. The result is RESULT_ERROR_RADIO_OFF/RESULT_ERROR_NO_SERVICE, in either case,

Strings. xml [Html]  lession01_sms Settings enter the mobile phone number enter the sent content send SMS   lession01_sms Settings enter the mobile phone number enter the sent content send SMS   Layout file: activity_sms.xml [Html]Xmlns:

Recently, I implemented a function in android. I drew a simulated hour hand in the activity and touched the hour hand and minute hand to adjust the time. In fact, it was quite simple to start with, but it took me nearly a week to implement it all...

Save & Restore State is similar to the previous example Android ApiDemo example parsing (9): App-> Activity-> Persistent State to implement the UI, but the functions and implementation methods are slightly different. (9) The EditText value in the UI

6. Write ListView for PlayListUse the List View (ListView) to display the playback list. Create an xml layout file named list_selector.xml in the drawable folder, which is used to gradient the background of the list items.List_selector.xml Android:

The screen of a mobile phone is relatively small. Sometimes you need to use a text box (TextView or its subclass) to display a long line of text. One way is to cut the text, use... . A common practice is to use Marquee to scroll text. This example

My android SDK is android4.0.4 of the A10 solution. Because the company develops a device based on this platform, it needs to remove the software that comes with android and the software that comes with the manufacturer. To learn how to crop the

Premise: You have a root android phone with busybox and superuser Guidance:This article describes how to defend against a simple virus ". The reason for writing this blog is that there are countless users who feel that root has no risks, or the

The Android platform api does not specifically provide a simple mechanism for skin replacement. This may be because foreign software focuses more on functions and ease of use and is not popular with skin replacement. The system does not provide