Android

I have witnessed many upgrades in the blog Park. You also want to notify users of new features by updating your software. Yes.This article is a must-have knowledge for android Developers. It is specially compiled and summarized for everyone. It is

I am developing a map program. I am more willing to use this method than using XML to write Android interfaces,Instead of using the MapView provided by Android, you can use the Google Maps JavaScript API that you have been familiar with before,Load

  The outline of this article is as follows: 1. AppWidget framework class 2. How to Use widgets in Android 3. Main Types of AppWidget framework 4. DEMO 1. AppWidget framework class 1. AppWidgetProvider: inherits from BroadcastRecevier and receives

Command to package the so file into the apkUse the original code of the android SDK to develop the APK and package the so file into the apk. This can only provide the user with an apk.1. Meaning full-code so packaging.A) create a project and use

Download and learn the source code of the Android UI component instance, which is helpful to your learning. The following is the information in the download package.1. Display GIF animated GIF view on AndroidGifView is a view that does not display

In android, the APP uses SmsManager. java provides a series of methods to send text messages, and there are many types of content to be sent, such as sendTextMessage, sendMultipartTextMessage, and sendDataMessage, in this article, we will take one

First, you can use the following code to test whether your machine has the speech recognition function:[Java]PackageManager pm = getPackageManager ();List activities = pm. queryIntentActivities (New Intent (RecognizerIntent. ACTION_RECOGNIZE_SPEECH)

AudioManager has the following method:IsWiredHeadsetOn ();If the headset is inserted, true is returned; otherwise, false is returned;Of course, you must add a permission. Otherwise, false is always returned. I started to catch up with the source

1. ramdisk. the imgfile gzip is compressed, so use the gunzip command to decompress it. but gunzip extension .gz can be decompressed normally, otherwise it will be ignored. (source file type) ramdisk. img: gzip compressed data, from Unix 2. after

Use canvas today. when the drawBitmap method draws an image, it finds a problem. When it is made in version 2.1, It is center-centered. When it is used in version 2.2, it finds the same image, but it cannot be centered. After reading the code, I

Recently, the video is decoded to generate yuv data and then jpg images. The previous scheme is yuv-rgb-bmp-jpg, which is very slow. The calculation time is about Ms, multiple clicks on a photo may lead to video screen latency. Therefore, you can

SmsActivity. java [Java]Package com. example. lession01_sms; Import java. util. ArrayList; Import android.net. Uri;Import android. OS. Bundle;Import android. app. Activity;Import android. app. PendingIntent;Import android. content. Intent;Import

Intent.It is mainly used for interaction and communication between various components of an application, and also for interaction between activities/services within the application.For example, you can call an external program in an application,

Animation type Android animation consists of four types In XMLAlpha gradient transparency animation effectScale scaling AnimationAnimated effect of moving the translate positionRotate screen transfer rotation animation effect Java codeAlphaAnimation

By convention, I wrote it above: maybe in the process of learning Android, everyone will learn a lot of basic knowledge like me, and a lot of knowledge points can also be said 123, however, these isolated points are too fragmented after all.

What is JSON: JSON is JavaScript Object Natation. It is a lightweight data exchange format. Like XML, it is a widely used solution for client-side interaction with the server. JSON Object: The Object in JSON starts with "{" and ends. every item in

The json string to the json object universal converter (implemented in java) is one hundred lines of code, which is very lightweight and compact. For general application scenarios, resource consumption is very low and the speed is fast enough,

  1. px (pixels) pixels-is a pixel, which is the actual pixel unit on the screen. Dip or dp (device independent pixels) device independent pixels, related to the device screen. Sp (scaled pixels-best for text size): similar to dp, it mainly deals

In Android Application Development, Status Notification (Status Notification) is often used, such as push messages provided by Sina Weibo and Netease News, and the progress of updating the software background, as shown in:   I read a lot of blog

The android orm ing framework allows you to operate databases like hibernate. The following code is extracted from the Internet for your reference only.   Package com. cng. utils; Import java. SQL. SQLException; Import android. content.