android app 版本更新

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android app 的版本更新（自己的app 要求是这样，进入首页，如果服务器上面有新的版本，进入首页，就会自动弹出一alertDialog，提示用户更新，接下来我会把文档写细点）

第一步：获得服务器的版本号

我这里是一个方法：在onCreate里面写一个方法

//获得版本号
initVersion();

第二步：写异步网络请求方法（这里是我自己独特的网络请求框架，你们应该也有自己的网络请求框架）

private void initVersion() {
AbstractCommonData acd = DataConvertFactory.getInstanceEmpty();
acd.putStringValue("url", App.BASEURL + "/index.php/Webservice/getUpdatedVersionWS?client=2");
acd.putObjectValue("iservice", new IServiceLogic() {
@Override
public AbstractCommonData doSuccess(AbstractCommonData acd) {
// TODO Auto-generated method stub
// Log.e("---------", "-----a1---" + acd);
VersionNum = acd.getDataValue("data").getFloatValue("android_version");
apkurl = acd.getDataValue("data").getStringValue("android_url");
//Log.e("---------", "-----aaaaaa-apkurl--" + apkurl);
updateVersion();
return null;
}
@Override
public AbstractCommonData doError(AbstractCommonData acd) {
// TODO Auto-generated method stub
return null;
}
});
ServiceController.addService(acd, this);
}

第三步：获得本地的版本号和服务器的版本号

/**
* 获取本地版本号
*
* @return
*/
public int getlocalVersion() {
int localversion = 0;
try {
PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), 0);
localversion = info.versionCode;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return localversion;
}

/** 这里是获得上面异步网络请求的参数，完成复制
* 获取服务器版本号
*
* @return
*/
public int getServiceVersion() {
int serviceversion = VersionNum.intValue();
return serviceversion;
}

第四步：弹出框，弹出是否版本更新（代码）

/**
* 版本更新
*
* @param
*/
public void updateVersion() {
if (getServiceVersion() > getlocalVersion()) {
android.app.AlertDialog.Builder builder = new android.app.AlertDialog.Builder(IndexActivity.this);
builder.setTitle("检查到新版本");
builder.setMessage("是否更新");
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
startService(new Intent(IndexActivity.this, UpdateService.class));
}
});
builder.create().show();
} else {
Toast.makeText(IndexActivity.this, "当前没有新版本", Toast.LENGTH_SHORT).show();
}
}

第五步：启动service ，开启下载(下载地址我写死了，可以更改)

UpdateService .java

package service;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.util.Log;
import android.widget.RemoteViews;
import android.widget.Toast;

import com.example.myproject.IndexActivity;
import com.example.myproject.R;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import frg.HelpFragment;

public class UpdateService extends Service {
private String apkurl = "http://www.xwjiang.com/estudy.apk";
private String apkPath;
private String apkName;
private boolean canceled = false;
private NotificationManager manager;
private Notification notification;
@Override
public IBinder onBind(Intent intent) {
return null;
}

@Override
public void onCreate() {
super.onCreate();
Log.e("-----a----", "-----a1---" +apkurl);
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
apkPath = Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/update";
apkName = "tools.apk";
registerBroader();
setUpNotifiction();
new Thread(new DownApkRunnable()).start();
} else {
Toast.makeText(UpdateService.this, "SD卡不存在", Toast.LENGTH_SHORT)
.show();
}
}

/**
* 创建通知
*/
private void setUpNotifiction() {
manager = (NotificationManager) getSystemService(Service.NOTIFICATION_SERVICE);
int icon = R.drawable.ic_launcher;
CharSequence tickerText = "开始下载";
long when = System.currentTimeMillis();
notification = new Notification(icon, tickerText, when);

RemoteViews contentView = new RemoteViews(getPackageName(),
R.layout.notify_update_layout);
contentView.setTextViewText(R.id.name, "易思达正在下载中");

Intent canceledIntent = new Intent("canceled");
canceledIntent.putExtra("canceled", "canceled");
PendingIntent canceledPendingIntent = PendingIntent.getBroadcast(
UpdateService.this, 1, canceledIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
contentView.setOnClickPendingIntent(R.id.cancle, canceledPendingIntent);
notification.contentView = contentView;

Intent intent = new Intent(UpdateService.this, HelpFragment.class);
PendingIntent contentIntent = PendingIntent.getActivity(
UpdateService.this, 0, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
notification.contentIntent = contentIntent;

manager.notify(0, notification);// 发送通知
}

/**
* 取消接收者
*
* @author renzhiwen 创建时间 2014-8-16 下午4:05:24
*/
class CanceledReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
if ("canceled".equals(intent.getStringExtra("canceled"))) {
canceled = true;
manager.cancel(0);
stopSelf();
}
}

}

/**
* 注册广播
*/
public void registerBroader() {
IntentFilter filter = new IntentFilter();
filter.addAction("canceled");
registerReceiver(new CanceledReceiver(), filter);
}

/**
* 下载apk
*
* @author renzhiwen 创建时间 2014-8-16 下午3:32:34
*/
class DownApkRunnable implements Runnable {

@Override
public void run() {
downloadApk();
}

}

private int laterate = 0;

private void downloadApk() {
try {
URL url = new URL(apkurl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
int length = conn.getContentLength();
int count = 0;
File apkPathFile = new File(apkPath);
if (!apkPathFile.exists()) {
apkPathFile.mkdir();
}
File apkFile = new File(apkPath, apkName);
InputStream in = conn.getInputStream();
FileOutputStream os = new FileOutputStream(apkFile);
byte[] buffer = new byte[1024];
do {
int numread = in.read(buffer);
count += numread;
int progress = (int) (((float) count / length) * 100);// 得到当前进度
if (progress >= laterate + 1) {// 只有当前进度比上一次进度大于等于1，才可以更新进度
laterate = progress;
Message msg = new Message();
msg.what = 1;
msg.arg1 = progress;
handler.sendMessage(msg);
}
if (numread <= 0) {// 下载完毕
handler.sendEmptyMessage(2);
canceled = true;
break;
}
os.write(buffer, 0, numread);
} while (!canceled);// 如果没有被取消
in.close();
os.close();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.toString();
e.printStackTrace();
}

}

Handler handler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:// 更新进度
int progress = msg.arg1;
if (progress < 100) {
RemoteViews contentView = notification.contentView;
contentView.setTextViewText(R.id.tv_progress, progress
+ "%");
contentView.setProgressBar(R.id.progressbar, 100, progress,
false);
} else {// 下载完成，停止服务
stopSelf();
}
manager.notify(0, notification);
break;
case 2:// 安装apk
manager.cancel(0);
installApk();
break;

default:
break;
}
}
};

/**
* 安装apk
*/
private void installApk() {
File apkFile = new File(apkPath, apkName);
if (!apkFile.exists()) {
return;
}
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(Uri.parse("file://" + apkFile.toString()),
"application/vnd.android.package-archive");
startActivity(intent);
}
}

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