Android版本更新（Service下载 Notification进度条）

功能：版本更新、文件后台下载以及Notification显示进度条。

效果图：

主要代码：

package com.ljp.download; import java.io.File; import android.app.ActivityGroup;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button; import com.ljp.download.service.AppUpgradeService;import com.ljp.version.R; public class MainActivity extends ActivityGroup {     private Button button1;     private String mDownloadUrl = "http://gdown.baidu.com/data/wisegame/ba226d3cf2cfc97b/baiduyinyue_4920.apk";    private String apkUpdateMsg = "1.内容1\n2.内容2\n3.内容3";    private Dialog updateVersionDialog;     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.layout_main);        button1 = (Button) findViewById(R.id.button1);        button1.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                showDialog();            }        });    }    private void showDialog() {        updateVersionDialog = new AlertDialog.Builder(MainActivity.this).setTitle("有新版本需要更新").setMessage(apkUpdateMsg)                .setPositiveButton("现在更新", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        downLoadApk();                    }                }).setNegativeButton("以后再说", new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int whichButton) {                        dialog.dismiss();                    }                }).create();        updateVersionDialog.show();     }     /**     * 文件下载     */    private void downLoadApk() {        Intent intent = new Intent(MainActivity.this, AppUpgradeService.class);        intent.putExtra("mDownloadUrl", mDownloadUrl);        startService(intent);        updateVersionDialog.dismiss();    }  }

package com.ljp.download.service; import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.net.URLEncoder;import java.util.HashMap;import java.util.Map; import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.IBinder;import android.os.Message;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.ProgressBar;import android.widget.RemoteViews;import android.widget.TextView;import android.widget.Toast; import com.ljp.download.DownloadUtils;import com.ljp.download.MainActivity;import com.ljp.version.R;/** * 程序版本更新Service * @author yingjun10627 * */public class AppUpgradeService extends Service {    private NotificationManager mNotificationManager = null;    private Notification mNotification = null;    private PendingIntent mPendingIntent = null;     private String mDownloadUrl;    private File destDir = null;    private File destFile = null;     public static final String downloadPath = "/winner";    public static final int mNotificationId = 111;    private static final int DOWNLOAD_FAIL = -1;    private static final int DOWNLOAD_SUCCESS = 0;     private Handler mHandler = new Handler() {        @Override        public void handleMessage(Message msg) {            switch (msg.what) {            case DOWNLOAD_SUCCESS:                Toast.makeText(getApplicationContext(), "下载成功", Toast.LENGTH_LONG).show();                install(destFile);                mNotificationManager.cancel(mNotificationId);                break;            case DOWNLOAD_FAIL:                Toast.makeText(getApplicationContext(), "下载失败", Toast.LENGTH_LONG).show();                mNotificationManager.cancel(mNotificationId);                break;            default:                break;            }        }     };     @Override    public int onStartCommand(Intent intent, int flags, int startId) {        if(intent==null){             stopSelf();             return super.onStartCommand(intent, flags, startId);        }        mDownloadUrl = intent.getStringExtra("mDownloadUrl");        if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {            destDir = new File(Environment.getExternalStorageDirectory().getPath() + downloadPath);            if (destDir.exists()) {                File destFile = new File(destDir.getPath() + "/" + URLEncoder.encode(mDownloadUrl));                if (destFile.exists() && destFile.isFile() && checkApkFile(destFile.getPath())) {                    install(destFile);                    stopSelf();                    return super.onStartCommand(intent, flags, startId);                }            }        } else {            return super.onStartCommand(intent, flags, startId);        }        mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        mNotification = new Notification();        Intent completingIntent = new Intent();        completingIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);        completingIntent.setClass(getApplicationContext(), AppUpgradeService.class);        // 创建Notifcation对象，设置图标，提示文字,策略        mPendingIntent = PendingIntent.getActivity(AppUpgradeService.this, R.string.app_name, completingIntent,                PendingIntent.FLAG_UPDATE_CURRENT);        mNotification.icon = R.drawable.ic_launcher;        mNotification.tickerText = "开始下载";        mNotification.contentIntent = mPendingIntent;         mNotification.contentView = new RemoteViews(getPackageName(), R.layout.app_upgrade_notification);        mNotification.contentView.setProgressBar(R.id.app_upgrade_progressbar, 100, 0, false);        mNotification.contentView.setTextViewText(R.id.app_upgrade_title, "正在下载...");        mNotification.contentView.setTextViewText(R.id.app_upgrade_text, "当前进度：0%");        mNotificationManager.cancel(mNotificationId);        mNotificationManager.notify(mNotificationId, mNotification);        new AppUpgradeThread().start();        return  super.onStartCommand(intent, flags, startId);     }          /**     * 用于监听文件下载     */    private DownloadUtils.DownloadListener downloadListener = new DownloadUtils.DownloadListener() {        @Override        public void downloading(int progress) {            System.out.println(progress);            mNotification.contentView.setProgressBar(R.id.app_upgrade_progressbar, 100, progress, false);            mNotification.contentView.setTextViewText(R.id.app_upgrade_text, "当前进度：" + progress + "%");            mNotificationManager.notify(mNotificationId, mNotification);        }         @Override        public void downloaded() {            mNotification.contentView.setViewVisibility(R.id.app_upgrade_progressbar, View.GONE);            mNotification.defaults = Notification.DEFAULT_SOUND;            mNotification.contentIntent = mPendingIntent;            mNotification.contentView.setTextViewText(R.id.app_upgrade_title, "下载完成");            mNotificationManager.notify(mNotificationId, mNotification);            if (destFile.exists() && destFile.isFile() && checkApkFile(destFile.getPath())) {                Message msg = mHandler.obtainMessage();                msg.what = DOWNLOAD_SUCCESS;                mHandler.sendMessage(msg);            }            mNotificationManager.cancel(mNotificationId);        }    };     /**     * 用于文件下载线程     * @author yingjun10627     *     */    class AppUpgradeThread extends Thread {        @Override        public void run() {            if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {                if (destDir == null) {                    destDir = new File(Environment.getExternalStorageDirectory().getPath() + downloadPath);                }                if (destDir.exists() || destDir.mkdirs()) {                    destFile = new File(destDir.getPath() + "/" + URLEncoder.encode(mDownloadUrl));                    if (destFile.exists() && destFile.isFile() && checkApkFile(destFile.getPath())) {                        install(destFile);                    } else {                        try {                            DownloadUtils.download(mDownloadUrl, destFile, false, downloadListener);                        } catch (Exception e) {                            Message msg = mHandler.obtainMessage();                            msg.what = DOWNLOAD_FAIL;                            mHandler.sendMessage(msg);                            e.printStackTrace();                        }                    }                }            }            stopSelf();        }    }     /**     * apk文件安装     *      * @param apkFile     */    public void install(File apkFile) {        Uri uri = Uri.fromFile(apkFile);        Intent intent = new Intent(Intent.ACTION_VIEW);        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        intent.setDataAndType(uri, "application/vnd.android.package-archive");        startActivity(intent);    }     /**     * 判断文件是否完整     *      * @param apkFilePath     * @return     */    public boolean checkApkFile(String apkFilePath) {        boolean result = false;        try {            PackageManager pManager = getPackageManager();            PackageInfo pInfo = pManager.getPackageArchiveInfo(apkFilePath, PackageManager.GET_ACTIVITIES);            if (pInfo == null) {                result = false;            } else {                result = true;            }        } catch (Exception e) {            result = false;            e.printStackTrace();        }        return result;    }     @Override    public IBinder onBind(Intent intent) {        return null;    } }

package com.ljp.download; import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.zip.GZIPInputStream; import org.apache.http.Header;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.params.BasicHttpParams;import org.apache.http.params.HttpConnectionParams;import org.apache.http.params.HttpParams; public class DownloadUtils {    private static final int CONNECT_TIMEOUT = 10000;    private static final int DATA_TIMEOUT = 40000;    private final static int DATA_BUFFER = 8192;               public interface DownloadListener {        public void downloading(int progress);        public void downloaded();    }     public static long download(String urlStr, File dest, boolean append, DownloadListener downloadListener) throws Exception {        int downloadProgress = 0;        long remoteSize = 0;        int currentSize = 0;        long totalSize = -1;         if (!append && dest.exists() && dest.isFile()) {            dest.delete();        }         if (append && dest.exists() && dest.exists()) {            FileInputStream fis = null;            try {                fis = new FileInputStream(dest);                currentSize = fis.available();            } catch (IOException e) {                throw e;            } finally {                if (fis != null) {                    fis.close();                }            }        }         HttpGet request = new HttpGet(urlStr);         if (currentSize > 0) {            request.addHeader("RANGE", "bytes=" + currentSize + "-");        }         HttpParams params = new BasicHttpParams();        HttpConnectionParams.setConnectionTimeout(params, CONNECT_TIMEOUT);        HttpConnectionParams.setSoTimeout(params, DATA_TIMEOUT);        HttpClient httpClient = new DefaultHttpClient(params);         InputStream is = null;        FileOutputStream os = null;        try {            HttpResponse response = httpClient.execute(request);            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {                is = response.getEntity().getContent();                remoteSize = response.getEntity().getContentLength();                Header contentEncoding = response.getFirstHeader("Content-Encoding");                if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {                    is = new GZIPInputStream(is);                }                os = new FileOutputStream(dest, append);                byte buffer[] = new byte[DATA_BUFFER];                int readSize = 0;                int temp=0;                while ((readSize = is.read(buffer)) > 0) {                    os.write(buffer, 0, readSize);                    os.flush();                    totalSize += readSize;                    if (downloadListener != null) {                        downloadProgress = (int) (totalSize * 100 / remoteSize);                        if(downloadProgress>=temp){                           temp++;                           downloadListener.downloading(downloadProgress);                        }                    }                }                if (totalSize < 0) {                    totalSize = 0;                }            }        } finally {            if (os != null) {                os.close();            }            if (is != null) {                is.close();            }        }         if (totalSize < 0) {            throw new Exception("Download file fail: " + urlStr);        }         if (downloadListener != null) {            downloadListener.downloaded();        }         return totalSize;    }}

Service启动方式说明：

START_STICKY：如果service进程被kill掉，保留service的状态为开始状态，但不保留递送的intent对象。随后系统会尝试重新创建service，由于服务状态为开始状态，所以创建服务后一定会调用onStartCommand(Intent,int,int)方法。如果在此期间没有任何启动命令被传递到service，那么参数Intent将为null。

START_NOT_STICKY：“非粘性的”。使用这个返回值时，如果在执行完onStartCommand后，服务被异常kill掉，系统不会自动重启该服务。

START_REDELIVER_INTENT：重传Intent。使用这个返回值时，如果在执行完onStartCommand后，服务被异常kill掉，系统会自动重启该服务，并将Intent的值传入。

START_STICKY_COMPATIBILITY：START_STICKY的兼容版本，但不保证服务被kill后一定能重启。

更多相关文章

随机推荐