Android

Android provides the invalidate method to refresh the interface, but invalidate cannot be called directly in the thread, because it violates the single-thread model: Android UI operations are not thread-safe, these operations must be called in the

[Problem] In the official Android SDK installation package, the following error occurs: Failed to fetch URL https://dl-ssl.google.com/android/repository/repository.xml, reason: https SSL error. You might want to force download through HTTP in the

Create a linearlayout in the activity, create a scrollhorizon object (scrollhorizon inherited from viewgroup), and call the createlayout function in scrollhorizon to load the myview (inherited from view) object, call the deleteallview function to

Call the Speech Recognition Activity in the system through recognizerintent. action_recognize_speech, And the recognition result is returned through onactivityresult. Below isCode. /** * fire an intent to start the speech recognition activity. *

  When Android comes to the database, it comes to think of SQLite and SQLite.SqlitedatabaseAndSqliteopenhelper In the Android system, we provide a class named sqliteopenhelper, which is used to manage database versions. This class is an abstract

Nilly View Profile More options Dec 15 2009, PM From: Nilly @ Oriolesoftware.com>Date: Tue, 15 Dec 2009 03:13:44-0800 (PST)Local: Tues, Dec 15 2009 pmSubject: Re: Android for omap3 with

1. terms and concepts Terms Description Remarks Screen Size) It refers to the actual physical size of the mobile phone, such as the commonly used 2.8 inch, 3.2 inch, 3.5 inch, 3.7 inch. The diagonal line length of the

A long time ago my own android game project, today with eclipse re-open reported a bunch of errors, are related to @ override, Google find a solution (http://blog.csdn.net/skylen/archive/2011/02/21/6198699.aspx ): Source code

1. Generate a gesture (refer to the built-in gesturebuilder) 1) Add    Android: Id ="@ + ID/gesture"    Android: layout_width ="Fill_parent"    Android: layout_height ="Fill_parent"   /> 2) gestureoverlayview registers ongesturelistener to

Implement a simple browser function: :     You see, you can add a net... Control Code: Package org. example. browserintent; Import org. example. browserintent. R; Import Android. App. activity;Import Android. content. intent;Import android.net.

1. Android screen Conversion Descriworientationlistener. Java Msensormanager. getdefasensensor (sensor.Type_accelerometer); // Use g-sensor. Rotation implementation (see G-sensor and screen rotation: http://blog.csdn.net/jaylin2013/article/details/56

  Obtain data from the input stream and return it in a byte array. The input stream can be either from the androi D local orSince the network. Public class streamto/*** Get data from the input stream* @ Paraminpu* @ Return* @ Throwsexc*/ Public

Android. OpenGL-----Class:Gldebughelper: A help class for debugging OpenGL ES programsGLU: class that provides GL Public ToolsGlutils: A Tool class that connects OpenGL ES and Android APIs. It provides texture image operations.Matrix: matrix

This is the first post I wrote in csdn. In addition, I was a real newbie shortly after I joined the work, so I hope you can provide more guidance. Here we want to share a solution to adding two click events to a listview. The effect is like clicking

Before analyzing the android message mechanism, let's take a look at the Code: Public class mainactivity extends activity implements view. onclicklistener {private textview statetext; private button BTN; @ override public void oncreate (bundle

Some projects in our work need to display the form at the top layer, such as the phone number displayed in the pop-up window of an incoming call or the text message intercepted. We want to put the data at the top layer, activity cannot meet our

1. Gallery allows you to drag an image to achieve a dazzling effect, as shown in the following figure. You can drag the image to the left and right: 2. layout code 3. Use a class inherited from baseadapter to act as a container Public class

Many engines can be found on the Internet. The jpct-AE engine can quickly solve the problem. For specific code, refer to the official demo. I wrote a few days ago, but now I have learned something. Class myrenderer implements glsurfaceview. Renderer

After studying the results of the Treeview for a while, I 'd like to share this with you and hope to give some good suggestions. This idea is: organize data according to the structure similar to the "Tree", and implement the listview directly on the

When running an android applet, the following message is displayed:No compatible targets were found do you wish to a add new Android virtual device? No compatible targets (programs) are found. Do you want to add an AVD? The main cause of this