Service class onstartcommand in Android

During Android development, every time startservice (intent) is called, The onstartcommand (intent, Int, INT) method of the service object will be called, and some processing will be done in the onstartcommand method. Then we noticed that this

Android video playback (3)

Package CN. c; import Java. io. file; import android. app. activity; import android. content. intent; import android.net. uri; import android. OS. bundle; import android. OS. environment; import android. view. view; import android. widget. button;

Android uses bitly to compress URLs

Requirements:Use bitly to compress the URL Official documentation:Http://dev.bitly.com/links.html#v3_shorten Notes:1. encode the original URL (longurl) to be compressedThat is, edcodelongurl = urlencoder. encode (longurl, "UTF-8 "); 2. The data

Android asynchronous image loading method 2 (1)

mainactivity. Java: Package com.cn. perfectlistview; import Java. util. arraylist; import android. app. activity; import android. OS. bundle; import android. widget. listview; // solution: // 1 listview asynchronously loads network images // 2 when

Android asynchronous image loading method 1 (4)

Main. XML is as follows: Listviewitem. XML is as follows:  

Android finger plotting (1)

Package cn. c; import java. io. outputStream; import android. app. activity; import android. content. intent; import android. graphics. bitmap; import android. graphics. bitmap. compressFormat; import android. graphics. bitmapFactory; import android.

Android video playback (4)

Package cn. c; import java. io. file; import android. app. activity; import android. content. intent; import android.net. uri; import android. OS. bundle; import android. OS. environment; import android. view. view; import android. widget. button;

Android video playback (2)

Package cn. c; import java. io. file; import java. io. IOException; import android. app. activity; import android. media. mediaPlayer; import android. media. mediaPlayer. onCompletionListener; import android. media. mediaPlayer. onErrorListener;

AsyncTask instance in Android

Mainactivity is as follows: Package com. example. asynctasktest; import java. io. byteArrayOutputStream; import java. io. inputStream; import org. apache. http. httpEntity; import org. apache. http. httpResponse; import org. apache. http. httpStatus;

Android video playback (1)

Package cn. c; import java. io. file; import android. app. activity; import android. media. mediaPlayer; import android. media. mediaPlayer. onCompletionListener; import android. media. mediaPlayer. onErrorListener; import android. media.

Common Bitmap operations in Android (II. Code)

Package com. testbitmapscale; import java. io. file; import java. io. fileInputStream; import java. io. fileOutputStream; import java. io. IOException; import java. io. inputStream; import java. util. iterator; import com. testbitmapscale. r.

Handler common methods in Android

Package com. example. testhandler; import android. OS. bundle; import android. OS. handler; import android. OS. message; import android. app. activity; // Handler common methods: // 1 post () // 2 postDelayed () // 3 sendMessage () // 4

Android asynchronous image loading method 1 (3)

Utils. Java is as follows: Package cn. loadImages; import java. io. inputStream; import java. io. outputStream; import android. graphics. bitmap; import android. graphics. bitmapFactory; public class Utils {public static void copyStream (InputStream

Android asynchronous image loading method 2 (3)

Main. xml is as follows:   Listviewitem. xml is as follows:  

Android asynchronous image loading method 1 (1)

MainActivity. java is as follows: Package cn. ideallistview; import java. util. arrayList; import android. app. activity; import android. OS. bundle; import android. view. view; import android. view. view. onClickListener; import android. widget.

Android asynchronous image loading method 2 (2)

Filecache. Java is as follows: Package com.cn. loadImages; import java. io. file; import java. io. fileNotFoundException; import java. io. fileOutputStream; import java. io. IOException; import java. io. inputStream; import java. io. outputStream;

SharedPreferences for data storage in Android

As a mature mobile phone system, Android provides multiple storage methods for data storage, such as SQLite, SharedPreferences, File, and ContentProvider.,This article mainly introduces SharedPreferences, which is called SP for short. SP is a more

Android-based network access (I) Selection of Apache httpclient and httpurlconnection in Android

On the official blog, android engineers talked about how to choose apache client and httpurlconnection:See http://android-developers.blogspot.com/2011/09/androids-http-clients.html for more informationHere we will summarize the following points.1)

Show pictures after taking pictures on Android

MainActivity is shown as follows: package cn.testcamera;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import

[Android sharing] reducing the power consumption of android apps

First, let's take a look at the main usage of android phones:Obviously, most of the electricity is consumed by network connections, GPS, and sensors. In short, it consumes a lot of power in the following situations:1. Transmission of large data

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