Android更新带进度条的通知栏

时间：2023-03-09 06:17:45
Android更新带进度条的通知栏

在网上查询了下。Android版本号更新通知栏带进度条，醉了，基本都是复制过来。有的代码不全，连源代码下载都没有。有下载也须要积分，还不能用，真黑心啊！！之前自己也写过自己定义通知栏Notification，想了还是自己写吧。

由于在通知栏更新，须要訪问网络下载。就写了个服务，在服务中实现了下载个更新。

先看MainActivity代码：

package com.wsj.wsjdemo;

import android.os.Bundle;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.content.Intent;

import android.view.Menu;

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        initGlobal();

        checkVersion();

    }

    /**

     * 初始化全局变量

     * 实际工作中这种方法中serverVersion从服务器端获取。最好在启动画面的activity中运行

     */

    public void initGlobal(){

        try{

            Global.localVersion = getPackageManager().getPackageInfo(getPackageName(),0).versionCode; //设置本地版本号号

            Global.serverVersion = 2;//假定服务器版本号为2。本地版本号默认是1

        }catch (Exception ex){

            ex.printStackTrace();

        }

    }

    /**

     * 检查更新版本号

     */

    public void checkVersion(){

        if(Global.localVersion < Global.serverVersion){

            //发现新版本号，提示用户更新

            AlertDialog.Builder alert = new AlertDialog.Builder(this);

            alert.setTitle("软件升级")

                 .setMessage("发现新版本号,建议马上更新使用.")

                 .setPositiveButton("更新", new DialogInterface.OnClickListener() {

                     public void onClick(DialogInterface dialog, int which) {

                         //开启更新服务UpdateService

                         //这里为了把update更好模块化，能够传一些updateService依赖的值

                         //如布局ID，资源ID，动态获取的标题,这里以app_name为例

                         Intent updateIntent =new Intent(MainActivity.this, UpdateService.class);

                         updateIntent.putExtra("app_name",R.string.app_name);

                         updateIntent.putExtra("downurl","http://www.subangloan.com/Contract/App/Android/caijia_unsign_signed.apk");

                         startService(updateIntent);

                     }

                 })

                 .setNegativeButton("取消",new DialogInterface.OnClickListener(){

                     public void onClick(DialogInterface dialog, int which) {

                         dialog.dismiss();

                     }

                 });

            alert.create().show();

        }else{

            //清理工作，略去

            //cheanUpdateFile(),文章后面我会附上代码

        }

    }

}

activity_main.xml文件：什么都没有就一个简单界面

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" />

</LinearLayout>

在Main中的用到的Global.java

package com.wsj.wsjdemo;

public class Global {

	 //版本号信息

    public static int localVersion = 0;

    public static int serverVersion = 0;

    public static String downloadDir = "app/download/";

}

写的服务实现UpdateService.java

package com.wsj.wsjdemo;

import java.io.File;

import java.io.IOException;

import java.text.DecimalFormat;

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 android.app.Notification;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.app.Service;

import android.content.Context;

import android.content.Intent;

import android.net.Uri;

import android.os.Handler;

import android.os.IBinder;

import android.os.Message;

import android.widget.RemoteViews;

public class UpdateService extends Service {

	private static String down_url; // = "http://192.168.1.112:8080/360.apk";

	private static final int DOWN_OK = 1; // 下载完毕

	private static final int DOWN_ERROR = 0;

	private String app_name;

	private NotificationManager notificationManager;

	private Notification notification;

	private Intent updateIntent;

	private PendingIntent pendingIntent;

	private String updateFile;

	private int notification_id = 0;

	long totalSize = 0;// 文件总大小

	/***

	 * 更新UI

	 */

	final Handler handler = new Handler() {

		@SuppressWarnings("deprecation")

		@Override

		public void handleMessage(Message msg) {

			switch (msg.what) {

			case DOWN_OK:

				// 下载完毕。点击安装

				Intent installApkIntent = getFileIntent(new File(updateFile));

				pendingIntent = PendingIntent.getActivity(UpdateService.this, 0, installApkIntent, 0);

				notification.contentIntent = pendingIntent;

				notification.flags |= Notification.FLAG_AUTO_CANCEL;

				notification.setLatestEventInfo(UpdateService.this, app_name, "下载成功，点击安装", pendingIntent);

				notificationManager.notify(notification_id, notification);

				stopService(updateIntent);

				break;

			case DOWN_ERROR:

				notification.setLatestEventInfo(UpdateService.this, app_name, "下载失败", pendingIntent);

				break;

			default:

				stopService(updateIntent);

				break;

			}

		}

	};

	@Override

	public IBinder onBind(Intent arg0) {

		return null;

	}

	@Override

	public int onStartCommand(Intent intent, int flags, int startId) {

		if (intent != null) {

			try {

				app_name = intent.getStringExtra("app_name");

				down_url = intent.getStringExtra("downurl");

				// 创建文件

				File updateFile = FileUtils.getDiskCacheDir(getApplicationContext(), "xxxx.apk");

				if (!updateFile.exists()) {

					try {

						updateFile.createNewFile();

					} catch (IOException e) {

						e.printStackTrace();

					}

				}

				// 创建通知

				createNotification();

				// 開始下载

				downloadUpdateFile(down_url, updateFile.getAbsolutePath());

			} catch (Exception e) {

				e.printStackTrace();

			}

		}

		return super.onStartCommand(intent, flags, startId);

	}

	/***

	 * 创建通知栏

	 */

	RemoteViews contentView;

	@SuppressWarnings("deprecation")

	public void createNotification() {

		notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

		notification = new Notification();

		notification.icon = R.drawable.ic_launcher;

		// 这个參数是通知提示闪出来的值.

		notification.tickerText = "開始下载";

		// pendingIntent = PendingIntent.getActivity(this, 0, updateIntent, 0);

		// 这里面的參数是通知栏view显示的内容

		notification.setLatestEventInfo(this, app_name, "下载：0%", pendingIntent);

		// notificationManager.notify(notification_id, notification);

		/***

		 * 在这里我们用自定的view来显示Notification

		 */

		contentView = new RemoteViews(getPackageName(), R.layout.notification_item);

		contentView.setTextViewText(R.id.notificationTitle, "正在下载");

		contentView.setTextViewText(R.id.notificationPercent, "0%");

		contentView.setProgressBar(R.id.notificationProgress, 100, 0, false);

		notification.contentView = contentView;

		updateIntent = new Intent(this, MainActivity.class);

		updateIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

		pendingIntent = PendingIntent.getActivity(this, 0, updateIntent, 0);

		notification.contentIntent = pendingIntent;

		notificationManager.notify(notification_id, notification);

	}

	/***

	 * 下载文件

	 */

	public void downloadUpdateFile(String down_url, String file) throws Exception {

		updateFile = file;

		HttpUtils HttpUtils = new HttpUtils();

		HttpUtils.download(down_url, file, new RequestCallBack<File>() {

			@Override

			public void onSuccess(ResponseInfo<File> responseInfo) {

				// 下载成功

				Message message = handler.obtainMessage();

				message.what = DOWN_OK;

				handler.sendMessage(message);

				installApk(new File(updateFile), UpdateService.this);

			}

			@Override

			public void onFailure(HttpException error, String msg) {

				Message message = handler.obtainMessage();

				message.what = DOWN_ERROR;

				handler.sendMessage(message);

			}

			@Override

			public void onLoading(long total, long current, boolean isUploading) {

				super.onLoading(total, current, isUploading);

				double x_double = current * 1.0;

				double tempresult = x_double / total;

				DecimalFormat df1 = new DecimalFormat("0.00"); // ##.00%

				// 百分比格式。后面不足2位的用0补齐

				String result = df1.format(tempresult);

				contentView.setTextViewText(R.id.notificationPercent, (int) (Float.parseFloat(result) * 100) + "%");

				contentView.setProgressBar(R.id.notificationProgress, 100, (int) (Float.parseFloat(result) * 100), false);

				notificationManager.notify(notification_id, notification);

			}

		});

	}

	// 下载完毕后打开安装apk界面

		public static void installApk(File file, Context context) {

			//L.i("msg", "版本号更新获取sd卡的安装包的路径=" + file.getAbsolutePath());

			Intent openFile = getFileIntent(file);

			context.startActivity(openFile);

		}

		public static Intent getFileIntent(File file) {

			Uri uri = Uri.fromFile(file);

			String type = getMIMEType(file);

			Intent intent = new Intent("android.intent.action.VIEW");

			intent.addCategory("android.intent.category.DEFAULT");

			intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

			intent.setDataAndType(uri, type);

			return intent;

		}

		public static String getMIMEType(File f) {

			String type = "";

			String fName = f.getName();

			// 取得扩展名

			String end = fName

					.substring(fName.lastIndexOf(".") + 1, fName.length());

			if (end.equals("apk")) {

				type = "application/vnd.android.package-archive";

			} else {

				// /*假设无法直接打开。就跳出软件列表给用户选择 */

				type = "*/*";

			}

			return type;

		}

}

基本上凝视写的清清楚楚，这当中用到了Xutils开源框架来下载文件。

如过你认为看的麻烦直接点击下载demo吧。不须要积分.。

。。

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