Android tutorial (13) -- Activity Switching

In this chapter, we will learn how to switch between activities. So many of the previous tutorials are operated in an Activity-View, so we may feel quite depressed. Go straight to the topic. In Android software development, an application is usually

Android reads doc files

Reading doc files in Android requires a third-party jar package tm-extractors-0.4.jar, the reading process is very simple Similar to common file stream operations, the following is a simple example: Package com. word. read; Import java. io.

AndroidStudio Initial Experience: Solving Execution failed for task': TestAndroid: c

Execution failed for task': TestAndroid: compiledebug '.There are various reasons. For specific reasons, please compile it in cmd to see what went wrong.Enter the project's gradle file directory and typeGradlew compileDebug -- stacktraceYou can

How to confirm the installation location of an application

Some applications can be installed on the SD card, but some applications cannot. There are certain rules. How to judge?6575/6577/6589 Android GB2, ICS, ICS2, JB, JB2[Solution]Google's default PackageManager management installation package mechanism

Set wifi and gprs

/*** Determine whether the gprs network is enabled** @ Param inContext* @ Return boolean*/Public boolean isuplsactive (Context context){ConnectivityManager = (ConnectivityManager) context. GetSystemService (Context. CONNECTIVITY_SERVICE

Android (1) _ introduction and development environment construction

What is 3G3rd Generation. 3G is a new generation mobile communication system that combines wireless communication with multimedia communication such as the Internet. 3G is only a communication technology standard, in line with this standard

Android programming experience-JSON usage experience

Note the following issues when using JSON: [Java] JSONObject jsonObject = new JSONObject ();Try {JsonObject. put ("test", "test 1 ");JsonObject. put ("test", 100 );} Catch (JSONException e ){// TODO Auto-generated catch blockE. printStackTrace

Android intercepts and deletes the SMS.

Directly give the code: [Html]Package com. zte. android. greenweb. launcher. service; Import org. json. JSONException;Import org. json. JSONObject; Import android. content. BroadcastReceiver;Import android. content. Context;Import android. content.

Add the Back key to the Android Action Bar

Add the Back key or other functions to the Action Bar to check the effect.   [Java]/* Display the back key on the left of the App icon */ActionBar actionBar = getActionBar ();ActionBar. setDisplayHomeAsUpEnabled (true ); /* Display the back key on

Data storage and access 3_scard

Use the openFileOutput () method of Activity to save files. The files are stored in the mobile phone space. Generally, the mobile phone storage space is not very large, and it is okay to store some small files, it is not feasible to store large

Android-AppWidget desktop plugin Learning

2013-05-30 Introduction: Learn about AppWidget. Body: This article only shows a Simple plug-in on the desktop. Manifest. xml configuration: Place a receiver and configure [Html]Android: name = ". Test3_AppWidget"Android: label = "Test3"Android:

Differences between android: padding and android: margin

Android: layout_marginLeft indicates the margin between the control and the edge parent control, Android: paddingLeft refers to the internal content of the control, such as the margin between text and the control.   For example: When the buttons

Android hardware accelerator and Its problem summary

I found that a screen appeared on a certain page on my mobile phone. Some widgets were stretched too much to cover other widgets, which was ugly. This phenomenon has a high probability. After analysis, it is found that, once this phenomenon occurs,

Android rolling Tab

View results:     If you are interested in the effect, please be patient. It is not complicated.Android-support-v4.jar support is required. --------------------------------------------------------------------------------Main layout file

Build an Android Development Environment (Full Version)

 Build an Android Development Environment 1. PreparationThe Android system is mainly developed based on the java language. Before you start, you must prepare the following operating environment and programs:  Decompress the downloaded package.2 ADT

Android Local Video Player Development-NDK compilation FFmpeg

In the search local video section of Android local video player development, we can search for a local video and display the image, title, and duration of each video, of course, if you need to add other methods such as the Video length and width,

Important attributes of android ListView

The first is the stackFromBottom attribute. After this attribute is set, the list you prepared will display the bottom of your list, with values true and false. Android: stackFromBottom = "true" The second is the transciptMode attribute. You need

Message push chat implementation for Android

One day, I found that Baidu had a cloud push package. I think Baidu's server is still relatively stable. What's more stable than our own server, it took me a few days to write a small chat tool. The right tool should be a trainer. In the future, if

Android Study Notes 05: Layout

1. Layout Introduction To adapt to various interface styles and meet development needs, Android provides five layout Methods: LinearLayout (linear layout), FrameLayout (Framework layout), and RelativeLayout (relative layout) absoluteLayout (absolute

Problems with ViewPager and LayoutInflater

The problem is as follows:1. How should I configure ViewPager? (Imitation function boot page) * A layout is required. The layout contains android. support. v4.view. ViewPager, and several imageviews that represent vertices (using XML to implement

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