Android Video Acquisition and image thumbnails

1. There are two ways to get a video Thumbnail (1) through the content provider (2) create a thumbnail manually (1) The disadvantage is that you must update the media library to see the thumbnail of the latest video. [Java] Copy codeThe Code is as

Solution to black screen display during Android Activity switching (redirection)

When two activities jump, because the second Activity loads a large amount of data at startup, a short black screen time will appear before the second Activity starts, A simple solution to this problem is to set the theme of the second Activity to

Android encapsulation instance code for capturing web page information

Copy codeThe Code is as follows: package cn. mypic; Import java. io. BufferedInputStream;Import java. io. BufferedReader;Import java. io. File;Import java. io. FileNotFoundException;Import java. io. FileOutputStream;Import java. io.

How to implement automatic shutdown for android

[Java] Copy codeThe Code is as follows: private void shutdown (){ Try { Process process = runtime.getruntime(cmd.exe c ("su "); DataOutputStream out = new DataOutputStream ( Process. getOutputStream ()); Out. writeBytes ("reboot-p \ n "); Out.

Android checkbox listView (multiple-choice, all-selected, reversed) specific implementation method

Layout file: [Html] Copy codeThe Code is as follows: Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: orientation = "horizontal"> Android: id = "@ + id/TV"Android: layout_width = "fill_parent"Android:

Parsing and sharing of init. rc files in Android

Parsing init. rc is performed in parse_config (): [system/core/init/init_parser.c. For details about the phase that occurs in the entire process of init, see Android init process Startup Process Analysis. I. parsing process 1. Scan the token in init.

Android obtains the city instance code through the current latitude and longitude

Copy codeThe Code is as follows: package com. yy; Import java. io. InputStreamReader; Import java.net. HttpURLConnection; Import java.net. URL; Import javax. xml. parsers. SAXParser;Import javax. xml. parsers. SAXParserFactory; Import org. xml. sax.

Source code of the Gridview instance that implements multi-row and horizontal scrolling paging in Android

Functional requirements: (1) For example, 2X2 is displayed on each page, 2XN in total, and image + text is displayed on each item (click a link ). If a single row is horizontally rolled, you can use Horizontalscrollview. For multi-row horizontal

Android control ListView usage (read the contact sample code)

Sample Code: This is a code for reading contacts: Copy codeThe Code is as follows: package com. ui. domain; Import java. util. ArrayList; Import java. util. List; Import android. app. Activity; Import android. database. Cursor; Import android.

Understanding Android Gesture Recognition to improve APP user experience

For touch screens, the native messages are nothing more than pressing, lifting, and moving. We only need to simply reload onTouch or set the touch listener setOnTouchListener for processing. However, to improve the user experience of our apps,

Introduction to reading files and reading Chinese Characters in Android

1. How to display the content of assets/license.txt (Chinese? (1) Method 1: InputStream. available () to get the number of bytes, and then read it once. Copy codeThe Code is as follows: private String readUserAgreementFromAsset (String assetName

How to Use Android Selector and Shape

1. background selector (IN res/drawable/, usage: android: background = "@ drawable/XXX ") Copy codeThe Code is as follows: 2. text color selector (IN res/color/, usage: android: textColor = "@ color/XXX ")Copy codeThe Code is as follows: Note:

Three-Level cache Policy for images in android (memory/file/Network)

1. Introduction Currently, images are inevitably used in android applications. Some images can be changed and need to be pulled from the network at each startup, there are many such scenarios in advertising spaces and pure image applications (such

How to call the system Email to send emails in Android Development (multiple call methods)

We all know that calling other programs in Android for relevant processing is almost all using Intent, so Email is no exception. In Android, there are three types of Intent for calling Email:Intent. ACTION_SENDTO send without attachmentIntent.

Android preset default voicemail number implementation

Some SIM cards are not preset with the VoiceMail number at the factory, but the operator requires that the preset VM number be read from the mobile phone according to PLMN. This section describes how to preset VM number in xml format and how to

Android Metro menu Implementation ideas and code

Let's continue with the android menu today. Previously we introduced: I believe everyone is familiar with the Metro style. Here we will implement this effect on the Android platform, Implementation ideas: Animation is used to achieve the moving

Android sets the search engine as Yahoo China and cannot find the solution

This problem is caused by a change in the yahoo search interface. Please modify Donottranslate-all_search_engines.xml (x: \ 6575gb2 \ v2.12 \ alps \ mediatek \ source \ frameworks \ banyan \ res \ values) 41753 is definedCopy codeThe Code is as

Android deletes all files under a folder (folder files, etc)

1. Because you need to delete files, you need the following permissions:: 2. Core code Copy codeThe Code is as follows: package com. example. deleteyoumi; Import java. io. File; Import android. OS. Bundle; Import android. OS. Handler; Import

Full Special Effects of contacts in Android system (I) Grouping navigation and extrusion animation (with source code)

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

Android boot auto-start Principle and Implementation case (with source code)

Principle: The Android system registers registration events (Intent) in the system by applications to respond to various types of messages generated by the system. The Android system provides a large number of APIS for application management. You

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