android 2 3 launcher

(new MyButton ());Button2.setOnClickListener (new MyButton ());Button3.setOnClickListener (new MyButton ());Button4.setOnClickListener (new MyButton ());Button5.setOnClickListener (new MyButton ());}Class MyButton implements OnClickListener {@ OverridePublic void onClick (View arg0 ){// TODO Auto-generated method stubSwitch (arg0.getId ()){Case R. id. button_alpha:Alpha ();Break;Case R. id. button_rotate:Rotata ();Break;Case R. id. button_scale:Scale ();Break;Case R. id. button_translate:Transl

acquisition layer includes obtaining local files, streaming media files, and sending the camera control information. The former only needs to read local files, and obtaining streaming media files requires obtaining media data from the Streaming Media Server. The streaming media file acquisition part includes the session negotiation part, data transmission part, and data buffer part. In the media information negotiation section, you need to use the RTSP Protocol [

An Android app can contain zero or multiple Acivity values. When your application contains multiple activities, you usually need to jump between them. In Android, Intent components are required to complete these operations.The best way to understand this important and abstract concept is to try it. The following example shows how to jump between two activities.1. Create a project named UsingIntent.

Viewfinderview customizes the view and implements a simple scanning interface. This article record my understanding of Android camera in the code process. Since I started to write a technical blog, there are many shortcomings in the first two articles. I wrote them as needed. It is estimated that it is difficult for everyone to have a clear understanding of what I wrote. This article tries to change the style and try to express my understanding, so th

action to match the activity to be invoked, To start it. than Intent.action_dial, you can invoke the phone dial panel. If multiple activity filters this ACTION, you are prompted to select one of the activity to display. 2. All existing Activiy are stored in the form of stacks. For example, the newest activity is on the top of the stack, If this activiy is closed, the actvity below it will be displayed. A activity is usually initiated by one activity

MainActivity is as follows: Package cc. testviewstudy3; import android. OS. bundle; import android. view. view; import android. view. view. onClickListener; import android. app. activity;/*** Demo Description: * learning about custom View (3) ** there are three methods to im

1. Example description Since Android 3.0, Android has introduced actoinbar. It must be said that before Android 3.0, the title bar of Android is really ugly and there is no function yet. In the past, the top columns of many applications were similar to Apple, for example. With the release and gradual expansi

settings: Setcontentview (R.layout.activity_main); Enter a new line of code to retrieve the button as follows: Thebutton = (Button) Findviewbyid (); Enter another period "." --eclipse displays a list of existing ID values. Currently we only add an ID value, select the ID name we set for the button-that is, "MyButton".You will use this method regularly to implement resource references in Java code. Now we should have the following line of code: Thebutton = (B

Android callback function 2: application instance and android callback function If you do not understand the android callback concept, see android callback function 1: Basic concepts. 1. Define Interfaces package com.app.util;public interface ZYJCallBack { public void data

40th days happy here-Android games hitting planes (3) adding enemy planes August 9. "The city is picturesque, and Shan Xiaowang is clear. The rain is transparent, and the bridges fall into the rainbow. ." The previous article has loaded bullets, sound effects, and background music for airplanes. This article mainly introduces enemy planes. Several functions used in this article are described as follows: 1.

Organized the use of methods and resources:Android developers are aware that the native simulator starts relatively slowly, does not operate smoothly, and there will be inexplicable problems. Of course many people will choose to use the Android phone directly to develop, but sometimes need to show the program on the projector when the phone is not very good to do it. Here we introduce a very good Android si

Android interview questions (2) and android interview questions 1. What is the difference between int and Integer? Java provides two different types: The reference type and the original type (or the built-in type ). Int Is the original data type of java, and Integer is the encapsulation class provided by java for int. Java provides encapsulation classes

some people will want to do something unclean. Learning and communication only It seems that every time you approve the root user, you have to go to the superuser list to see if there are any exceptions. Please do not use the root mobile phone to download software at will, or use any excuse to create any virus! Security issues after Android phone root (1) Security issues after Android mobile phone roo

Android External Storage stores store data files on the SD card. 1. When saving data, you must first judge the SD card status. Environment. getExternalStorageState () can be used to display the running status of the SD card. There are two statuses: MEDIA_UNKNOWN,MEDIA_REMOVED,MEDIA_UNMOUNTED,MEDIA_CHECKING,MEDIA_NOFS,MEDIA_MOUNTED,MEDIA_MOUNTED_READ_ONLY,MEDIA_SHARED,MEDIA_BAD_REMOVAL, OrMEDIA_UNMOUNTABLE. We generally use MEDIA_MOUNTED is operable

MainActivity: [java] package c. c; import android. app. activity; import android. content. contentValues; import android. content. intent; import android.net. uri; import android. OS. bundle; import android. provider. mediaStore; import