Android

Previously, it was not noticed that the getview of listview would be repeatedly executed multiple times. This time, due to the complicated layout, we went to the breakpoint tracking during the test and found that the same piece of data was

Copy codeThe Code is as follows: Intent intent = new Intent ("cn. pocketdigi. update. alarm "); Intent. setClass (this, AlarmReceiver. class ); PendingIntent pi = PendingIntent. getBroadcast (this, 0, intent, 0 ); // Set a PendingIntent object to

1. dip: device independent pixels (device independent pixel ).Different devices have different display effects, which are related to the hardware of the device. We recommend that you use this function to support WVGA, HVGA, and QVGA without pixels.

During Mobile Phone development, some time-consuming operations are often encountered. At this time, the progress bar will start to work in handy. This demo shows the ProgressBar progress bar and ProgressDialog progress box. 1. ProgressDialog

File: javastheventloop. java GB/GB2/GB3: 1. import android. OS. PowerManager; 2. Variable Declaration: private PowerManager. WakeLock mWakeLock; 3. Add the definition in the javastheventloop () {} constructor: PowerManager pm = (PowerManager)

Curl is a well-known software for implementing open source file transfer protocols, including HTTP, HTTPS, FTP, and other commonly used and uncommon protocols. In the official source code of the latest curl version, the android compilation file

The purpose of this article is to achieve the Guiding Effect of sliding left and right. So what is the guiding effect? In order to have a better user experience, the current application usually displays some guidance help pages at the beginning of

Background:In Android, data is stored in the following ways: Content Provider (implemented using SQLite), SQLite, SharedPreferences (implemented using XML), files, and networks. In today's project, you need to save a permanent data to your local

I checked a lot of information on the Internet, which is roughly the same. Everyone copied each other. It was very difficult and hard to understand. I would like to summarize it myself and find it if I needed it.The example in the Code is as follows:

I remember that I was very interested in the special effects in the system contact when I first came into contact with Android. It will be grouped based on the first letter of the contact's last name on the mobile phone, the current group is always

If you need to enable or cancel the shake Effect of sliding and unlocking Based on the touch vibration switch in the settings, you need to make the following changes. In the LockScreen method of the LockScreen. java class Copy codeThe Code is as

After the call, the dynamic wallpaper is actually displayed behind the Activity, while the Activity is transparent, so that you can see the following dynamic wallpaper. if the Activity is not transparent, nothing can be seen. Two interfaces are used

There are also a lot of articles on this aspect on the Internet. The basic idea is to solve this problem through thread + cache. Some optimizations are proposed below: 1. Use a thread pool 2. Memory Cache + File Cache 3. In the memory cache,

In android, the camera function system has been provided and can be directly used in apps. When a mobile phone downloads a photo app from android play, it determines whether the mobile phone supports the app. No. Download is not supported.There are

The Adapter in Android is very useful for customizing the display list, such as SimpleAdapter. Its constructor is: Public SimpleAdapter (Context context, List> data, int resource, String [] from, int []) The meanings of its parameters: 1. context,

In Android, there are two main ways for intent to pass objects: Bundle. putSerializable (Key, Object) and Bundle. putParcelable (Key, Object); of course, these objects have certain conditions. The former implements the Serializable interface, and

For example, I want to jump to interface B or interface C from interface.In this case, I need to write two intents. If you want to transfer the value involved, your Intent will write the method of adding the value twice. If I use one Bundle to

Copy codeThe Code is as follows: package com. aslibra. test; Import android. app. Activity;Import android. graphics. Rect;Import android. OS. Bundle;Import android. util. Log;Import android. view. Window;Import android. widget. ImageView; Public

Data is the core of Shenma platform, Shenma development environment, Shenma software program. For the development platform, if you have good support for data storage, it will greatly promote application development. Generally, there are three Data

Now there are more and more demands for maintaining and customizing Android, and more people are working on it. There are many bugs and unreasonable issues in the source code directly released by Google, especially native applications, such as Mms,