Android版本更新

package test.bwie.com.checkedversion;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.util.Xml;
import android.widget.Toast;

import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest;

import org.xmlpull.v1.XmlPullParser;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends Activity {
private String newVersion_result = null;
private AlertDialog alert;
private AlertDialog alertDialog;
private List<Info> info = new ArrayList<>();
private AlertDialogUtils alertUtils = new AlertDialogUtils();
private Handler myHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
newVersion_result = (String) msg.obj;
try {
info = parseXml(newVersion_result);
int oldVersion = oldVersion();
if (oldVersion != 0 && info.get(0).getVersion_code() != 0) {
if (oldVersion < info.get(0).getVersion_code()) {
update(info.get(0).getDownloadUrl());
}
if (oldVersion == info.get(0).getVersion_code()) {
Toast.makeText(MainActivity.this, "当前已经是最高版本", Toast.LENGTH_LONG).show();
}

} else {
Toast.makeText(MainActivity.this, "获取版本信息失败！！！", Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
e.printStackTrace();
}

}
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//查询最新版本
newVersion();
}

/**
* Pull解析XML文件
*
* @param data
* @return
* @throws Exception
*/
public List<Info> parseXml(String data) throws Exception {
List<Info> mList = null;
Info beauty = null;
// 由android.util.Xml创建一个XmlPullParser实例
XmlPullParser xpp = Xml.newPullParser();
InputStream inputStream = new ByteArrayInputStream(data.getBytes());
// 设置输入流 并指明编码方式
xpp.setInput(inputStream, "UTF-8");
// 产生第一个事件
int eventType = xpp.getEventType();

while (eventType != XmlPullParser.END_DOCUMENT) {
switch (eventType) {
// 判断当前事件是否为文档开始事件
case XmlPullParser.START_DOCUMENT:
mList = new ArrayList<Info>(); // 初始化books集合
break;
// 判断当前事件是否为标签元素开始事件
case XmlPullParser.START_TAG:
if (xpp.getName().equals("oschina")) { // 判断开始标签元素是否是book
beauty = new Info();
} else if (xpp.getName().equals("versionCode")) {
eventType = xpp.next();//让解析器指向name属性的值
// 得到name标签的属性值，并设置beauty的name
beauty.setVersion_code(Integer.valueOf(xpp.getText()));
} else if (xpp.getName().equals("versionName")) {
eventType = xpp.next();//让解析器指向name属性的值
// 得到name标签的属性值，并设置beauty的name
beauty.setVersionName(xpp.getText());
} else if (xpp.getName().equals("downloadUrl")) { // 判断开始标签元素是否是book
eventType = xpp.next();//让解析器指向age属性的值
// 得到age标签的属性值，并设置beauty的age
beauty.setDownloadUrl(xpp.getText());
}
break;

// 判断当前事件是否为标签元素结束事件
case XmlPullParser.END_TAG:
if (xpp.getName().equals("oschina")) { // 判断结束标签元素是否是book
mList.add(beauty); // 将book添加到books集合
beauty = null;
}
break;
}
// 进入下一个元素并触发相应事件
eventType = xpp.next();
}
return mList;

}

//安装apk
protected void installApk(File file) {
Intent intent = new Intent();
//执行动作
intent.setAction(Intent.ACTION_VIEW);
//执行的数据类型
intent.setDataAndType(Uri.fromFile(file), "application/vnd.Android.package-archive");
startActivity(intent);
}

/*
* 进入程序的主界面
*/
private void LoginMain() {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
//结束掉当前的activity
this.finish();
}

/**
* 提示是否更新的对话框
*/
public void update(String apk_path) {

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("更新");
builder.setMessage("检测到有最新版本，是否更新？");
builder.setPositiveButton("更新", new AlertDialog.OnClickListener() {

public void onClick(DialogInterface dialogInterface, int i) {
updateVersion(info.get(0).getDownloadUrl(), Environment.getExternalStorageDirectory().getPath() + "/update.apk");

}
});
builder.setNegativeButton("暂不更新", new AlertDialog.OnClickListener() {

public void onClick(DialogInterface dialogInterface, int i) {

alert.cancel();
}
});
alert = builder.create();
alert.show();

}

/**
* 得到当前版本
*
* @return
*/
public int oldVersion() {
int version_code = 0;
//得到版本码和版本名
try {
version_code = this.getPackageManager().getPackageInfo("test.bwie.com.checkedversion", 0).versionCode;
String versionName = this.getPackageManager().getPackageInfo("test.bwie.com.checkedversion", 0).versionName;
Toast.makeText(MainActivity.this, "当前版本是：" + versionName, Toast.LENGTH_SHORT).show();
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return version_code;
}

/**
* 获取新版本
*/
public void newVersion() {
HttpUtils hu = new HttpUtils();
hu.send(HttpRequest.HttpMethod.GET, "http://www.oschina.net/MobileAppVersion.xml", new RequestCallBack<String>() {
@Override
public void onSuccess(ResponseInfo<String> responseInfo) {
String result = responseInfo.result;
Log.d("tag", result);
Message msg = new Message();
msg.obj = result;
myHandler.sendMessage(msg);
}

@Override
public void onFailure(HttpException e, String s) {
Toast.makeText(MainActivity.this, "获取新版本信息失败！！！", Toast.LENGTH_LONG).show();
Log.d("tag", e.toString());

}
});

}

/**
* 更新版本
*
* @param url
* @param path
*/
public void updateVersion(String url, String path) {
HttpUtils hu = new HttpUtils();
hu.download(url, path, new RequestCallBack<File>() {
@Override
public void onLoading(long total, long current, boolean isUploading) {
Toast.makeText(MainActivity.this, "正在更新，请稍后", Toast.LENGTH_LONG).show();
super.onLoading(total, current, isUploading);
}

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@Override
public void onSuccess(ResponseInfo<File> responseInfo) {
AlertDialog.Builder ab = new AlertDialog.Builder(MainActivity.this);
ab.setMessage("更新包已下载完成，是否安装？");
ab.setPositiveButton("安装", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
update_apk();
alertDialog.cancel();
}
});
ab.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
alertDialog.cancel();
Toast.makeText(MainActivity.this, "已取消安装", Toast.LENGTH_SHORT).show();
}
});
alertDialog = ab.create();
alertDialog.show();
}

@Override
public void onFailure(HttpException e, String s) {
Toast.makeText(MainActivity.this, "下载失败", Toast.LENGTH_SHORT).show();
}
});
}

/**
* 安装apk
*/
public void update_apk() {
File apkfile = new File(
Environment.getExternalStorageDirectory() + "/update.apk");
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(apkfile),
"application/vnd.android.package-archive");
startActivity(intent);
}
}

package test.bwie.com.checkedversion;

/**
* Created by HCM on 2016/7/27.
*/
public class Info {
private int version_code;//版本号
private String versionName;//版本名称
private String downloadUrl;//下载apk的路径

public int getVersion_code() {
return version_code;
}

public void setVersion_code(int version_code) {
this.version_code = version_code;
}

public String getVersionName() {
return versionName;
}

public void setVersionName(String versionName) {
this.versionName = versionName;
}

public String getDownloadUrl() {
return downloadUrl;
}

public void setDownloadUrl(String downloadUrl) {
this.downloadUrl = downloadUrl;
}

@Override
public String toString() {
return "Info{" +
"version_code=" + version_code +
", versionName='" + versionName + '\'' +
", downloadUrl='" + downloadUrl + '\'' +
'}';
}
}