Android版本更新

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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 + '\'' +                '}';    }}
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