Android更新带进度条的通知栏

ゞ浴缸里的玫瑰 2024-02-17 16:03 2阅读 0赞

在网上查询了下，Android版本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，连源码下载都没有，有下载也需要积分，还不能用，真黑心啊！！之前自己也写过[自定义通知栏][Link 1][Notification][Link 1]，想了还是自己写吧。

因为在通知栏更新，需要访问网络下载，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
         * 实际工作中这个方法中serverVersion从服务器端获取，最好在启动画面的activity中执行
         */
        public void initGlobal(){
            try{
                Global.localVersion = getPackageManager().getPackageInfo(getPackageName(),0).versionCode; //设置本地版本号
                Global.serverVersion = 2;//假定服务器版本为2，本地版本默认是1
            }catch (Exception ex){
                ex.printStackTrace();
            }
        }
        /**
         * 检查更新版本
         */
        public void checkVersion(){
         
            if(Global.localVersion < Global.serverVersion){
                //发现新版本，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,建议立即更新使用.")
                     .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，可以传一些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

在Main中的用到的Global.java

package com.wsj.wsjdemo;
    
    public class Global {
    	 //版本信息
        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; // 下载完成
    	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:
    				// 下载完成，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();
    				// 开始下载
    				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;
    		// 这个参数是通知提示闪出来的值.
    		notification.tickerText = "开始下载";
    
    		// pendingIntent = PendingIntent.getActivity(this, 0, updateIntent, 0);
    
    		// 这里面的参数是通知栏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);
    			}
    		});
    	}
    	// 下载完成后打开安装apk界面
    		public static void installApk(File file, Context context) {
    			//L.i("msg", "版本更新获取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 {
    				// /*如果无法直接打开，就跳出软件列表给用户选择 */
    				type = "*/*";
    			}
    			return type;
    		}
    }

基本上注释写的清清楚楚，这其中用到了Xutils开源框架来下载文件。

如过你觉得看的麻烦[直接点击下载demo吧，不需要积分][demo].。。。

[Link 1]: http://blog.csdn.net/onceing/article/details/46911773
[demo]: http://download.csdn.net/detail/onceing/8968135