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////////////////////2016/04/25//////////////////////
///////////////////by XBW///////////////////////////
//////////////////环境 eclipse api22///////////
做点贡献，发几个小demo，每次启动某个app都会遇到app升级，这是怎么实现的呢，先上图吧，
有图有真相，
这截图真大，没睡了，
结构。
Config.java
package com.example.update;
public class Config {
public static String mysql_url_update="http://127.0.0.1/androidapp/appupdate/update.txt";//服务器端更新url；
}
FileUtil.java
package com.example.update;
import java.io.File;
import java.io.IOException;
import android.os.Environment;
public class FileUtil {
public static File updateDir = null;
public static File updateFile = null;
public static final String Application = "konkaUpdateApplication";
public static boolean isCreateFileSucess;
public static void createFile(String app_name) {
if (android.os.Environment.MEDIA_MOUNTED.equals(android.os.Environment.getExternalStorageState())) {
isCreateFileSucess = true;
updateDir = new File(Environment.getExternalStorageDirectory()+ "/" +Application +"/");
updateFile = new File(updateDir + "/" + app_name + ".apk");
if (!updateDir.exists()) {
updateDir.mkdirs();
}
if (!updateFile.exists()) {
try {
updateFile.createNewFile();
} catch (IOException e) {
isCreateFileSucess = false;
e.printStackTrace();
}
}
}else{
isCreateFileSucess = false;
}
}
}
GetVersion.java
package com.example.update;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
public class GetVersion {
// 获取当前版本的版本号
public String getVersion(Context context) {
try {
PackageManager packageManager = context.getPackageManager();
PackageInfo packageInfo = packageManager.getPackageInfo(
context.getPackageName(), 0);
return packageInfo.versionName;
} catch (NameNotFoundException e) {
e.printStackTrace();
return "版本号未知";
}
}
}
IsNeedUpdate.java
package com.example.update;
import android.content.Context;
public class IsNeedUpdate {
private UpdateInfo info;
public IsNeedUpdate(Context context){
UpdateInfoService updateInfoService = new UpdateInfoService(
context);
try {
info = updateInfoService.getUpDateInfo();
} catch (Exception e) {
// TODO 自动生成?? catch ??
e.printStackTrace();
}
}
public boolean isNeedUpdate(Context context) {
GetVersion version=new GetVersion();
//版本更新检测使用浮点型存在小版本问题，浮点型不能识别v 1.2.1这种小版本
//double webVersion=Double.parseDouble(info.getVersion());
// double localVersion=Double.parseDouble(version.getVersion(context));
//采用比较字典序大小检测版本更新
if (info.getVersion().compareTo(version.getVersion(context))>0) {
return true;
} else {
return false;
}
}
public String getDescribe(){
return info.getDescription();
}
public String getUrl(){
return info.getUrl();
}
}
ShowUpdateDialog.java
package com.example.update;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.os.Environment;
import android.text.method.ScrollingMovementMethod;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
public class ShowUpdateDialog{
private UpdateInfo info;
//更新窗口
public Dialog showUpdateDialog(final Context context,String msg,final String url) {
LayoutInflater layoutInflater =LayoutInflater.from(context);
RelativeLayout layout = (RelativeLayout)layoutInflater.inflate(R.layout.dialog, null );
final Dialog dialog = new AlertDialog.Builder(context).create();
dialog.show();
dialog.getWindow().setContentView(layout);
TextView tex=(TextView)layout.findViewById(R.id.dialog_text);
TextView tex1=(TextView)layout.findViewById(R.id.textView_title);
tex.setMovementMethod(ScrollingMovementMethod.getInstance());
tex.setText(msg);
tex1.setText("更新提示");
//确定按钮
Button btnOK = (Button) layout.findViewById(R.id.dialog_ok);
btnOK.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
//services.service();
Intent intent = new Intent(context,UpdateServices.class);
intent.putExtra("Key_App_Name",context.getString(R.string.app_name));
intent.putExtra("Key_Down_Url",url);
context.startService(intent);
} else {
Toast.makeText(context, "SD卡不可用，请插入SD卡",
Toast.LENGTH_SHORT).show();
}
dialog.dismiss();
}
});
//关闭按钮
ImageButton btnClose = (ImageButton) layout.findViewById(R.id.dialog_close);
btnClose.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
return dialog;
}
//不更新窗口
public Dialog showDialog(final Context context) {
LayoutInflater layoutInflater =LayoutInflater.from(context);
RelativeLayout layout = (RelativeLayout)layoutInflater.inflate(R.layout.dialog, null );
final Dialog dialog = new AlertDialog.Builder(context).create();
dialog.show();
dialog.getWindow().setContentView(layout);
TextView tex=(TextView)layout.findViewById(R.id.dialog_text);
TextView tex1=(TextView)layout.findViewById(R.id.textView_title);
GetVersion version=new GetVersion();
tex.setText("您使用的是最新版:"+version.getVersion(context)+"版本");
tex1.setText("更新提示");
Button btnOK = (Button) layout.findViewById(R.id.dialog_ok);
btnOK.setVisibility(View.INVISIBLE);
//关闭按钮
ImageButton btnClose = (ImageButton) layout.findViewById(R.id.dialog_close);
btnClose.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
return dialog;
}
}
UpdateInfo.java
package com.example.update;
public class UpdateInfo
{
private String version;
private String description;
private String url;
public String getVersion()
{
return version;
}
public void setVersion(String version)
{
this.version = version;
}
public String getDescription()
{
return description;
}
public void setDescription(String description)
{
this.description = description;
}
public String getUrl()
{
return url;
}
public void setUrl(String url)
{
this.url = url;
}
}
UpdateInfoService.java
package com.example.update;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import android.content.Context;
public class UpdateInfoService {
public UpdateInfoService(Context context) {
}
public UpdateInfo getUpDateInfo() throws Exception {
String path = Config.mysql_url_update;
StringBuffer sb = new StringBuffer();
String line = null;
BufferedReader reader = null;
UpdateInfo updateInfo = new UpdateInfo();
try {
// 创建??个url对象
URL url = new URL(path);
// 通過url对象，创建一个HttpURLConnection对象（连接）
HttpURLConnection urlConnection = (HttpURLConnection) url
.openConnection();
// 通过HttpURLConnection对象，得到InputStream
reader = new BufferedReader(new InputStreamReader(
urlConnection.getInputStream()));
// 使用io流读取文??
while ((line = reader.readLine()) != null) {
sb.append(line);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (reader != null) {
reader.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
String info = sb.toString();
updateInfo.setVersion(info.split("&")[1]);
updateInfo.setDescription(info.split("&")[2]);
updateInfo.setUrl(info.split("&")[3]);
return updateInfo;
}
}
才发现csdn博客还有长度限制，发了好几次都被截断了，这样吧，
直接传送demo，或者去我小站看一下吧
小站demo下载不需要积分哦
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原文地址：http://blog.csdn.net/xbw12138/article/details/51245455
