给用户第一印象---应用启动界面

妖狐艹你老母 2022-08-12 16:04 163阅读 0赞

作为与用户的第一次亲密接触

splash界面的作用：

1、展现App的Logo，给用户的第一印象；一般包括图标和应用名称，或者加一句标语

2、应用程序初始化的操作；如初始化网络，或者获取用户位置信息，设备信息等  
3、检查应用程序的版本；用于提醒版本更新等操作  
4、检查当前应用程序是否合法注册；

public class AppUtil {
    
    	/**
    	 * 获取应用程序名称
    	 */
    	public static String getAppName(Context context) {
    		try {
    			PackageManager packageManager = context.getPackageManager();
    			PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
    			int labelRes = packageInfo.applicationInfo.labelRes;
    			return context.getResources().getString(labelRes);
    		} catch (NameNotFoundException e) {
    			e.printStackTrace();
    		}
    		return null;
    	}
    
    	/**
    	 * [获取应用程序版本名称信息]
    	 * @param context
    	 * @return 当前应用的版本名称
    	 */
    	public static String getVersionName(Context context) {
    		try {
    			PackageManager packageManager = context.getPackageManager();
    			PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
    			return packageInfo.versionName;
    		} catch (NameNotFoundException e) {
    			e.printStackTrace();
    		}
    		return null;
    	}
    
    }

/** 弹出更新对话框
    	 */
    	private void showUpdate() {
    		Builder builder = new Builder(this);
    		builder.setTitle("发现新版本");
    		builder.setMessage(Update.DESCRIPTION);
    		builder.setPositiveButton("立即下载", new OnClickListener() {
    			public void onClick(DialogInterface dialog, int which) {
    				startService(new Intent(SplashActivity.this, UpdateService.class));
    				handler.sendEmptyMessage(ENTER_HOME);
    			}
    		});
    		builder.setNegativeButton("以后再说", new OnClickListener() {
    			public void onClick(DialogInterface dialog, int which) {
    				handler.sendEmptyMessage(ENTER_HOME);
    			}
    		});
    		builder.show();
    	};

/**通知栏后台下载apk的服务*/
    public class UpdateService extends Service {
    
    	// 标题
    	private int titleId = R.string.app_name;
    
    	// 文件存储
    	private File updateDir = null;
    	private File updateFile = null;
    
    	// 通知栏
    	private NotificationManager updateNotificationManager = null;
    	private Notification updateNotification = null;
    
    	private RemoteViews remoteViews;// 状态栏通知显示的view
    
    	@Override
    	public IBinder onBind(Intent intent) {
    		return null;
    	}
    
    	@Override
    	public int onStartCommand(Intent intent, int flags, int startId) {
    		System.out.println("开始下载");
    		// 创建文件
    		if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
    			updateDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath());
    			updateFile = new File(updateDir.getPath(), getResources().getString(titleId) + ".apk");
    		}
    
    		// 创建通知栏
    		this.updateNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    		this.updateNotification = new Notification();
    		this.updateNotification.flags |= Notification.FLAG_AUTO_CANCEL;
    		// 通知栏视图
    		remoteViews = new RemoteViews(getPackageName(), R.layout.notification_update);
    		remoteViews.setImageViewResource(R.id.iv_update_icon, R.drawable.ic_launcher);
    		updateNotification.contentView = remoteViews;
    		updateNotification.icon = R.drawable.ic_launcher;// 设置通知消息的图标
    		updateNotification.tickerText = "正在下载。。。";// 设置通知消息的标题
    		// 发出通知
    		updateNotificationManager.notify(0, updateNotification);
    
    		// 下载apk
    		FinalHttp http = new FinalHttp();
    		String url = Update.APKURL;
    		http.download(url, updateFile.getAbsolutePath(), new AjaxCallBack<File>() {
    			@Override
    			public void onFailure(Throwable t, int errorNo, String strMsg) {
    				// 下载失败
    				remoteViews.setTextViewText(R.id.tv_update_text, "下载失败");
    				remoteViews.setProgressBar(R.id.pb_update_progress, 100, 30, false);
    				updateNotification.contentView = remoteViews;
    				updateNotificationManager.notify(0, updateNotification);
    				// 停止服务
    				stopSelf();
    				super.onFailure(t, errorNo, strMsg);
    			}
    
    			@Override
    			public void onLoading(long count, long current) {
    				int progress = (int) (current * 100 / count);
    				remoteViews.setTextViewText(R.id.tv_update_text, "已下载" + progress + "%");
    				remoteViews.setProgressBar(R.id.pb_update_progress, 100, (int) progress, false);
    				updateNotification.contentView = remoteViews;
    				updateNotificationManager.notify(0, updateNotification);
    				super.onLoading(count, current);
    			}
    
    			@Override
    			public void onSuccess(File t) {
    				// 点击安装PendingIntent
    				Uri uri = Uri.fromFile(t);
    				Intent installIntent = new Intent(Intent.ACTION_VIEW);
    				installIntent.setDataAndType(uri, "application/vnd.android.package-archive");
    				PendingIntent updatePendingIntent = PendingIntent.getActivity(UpdateService.this, 0, installIntent, 0);
    
    				updateNotification.defaults = Notification.DEFAULT_SOUND;// 铃声提醒
    				remoteViews.setTextViewText(R.id.tv_update_text, "下载完成，点击安装");
    				remoteViews.setProgressBar(R.id.pb_update_progress, 100, 100, false);
    				updateNotification.contentView = remoteViews;
    				updateNotification.setLatestEventInfo(getApplicationContext(), "APP", "下载完成，点击安装", updatePendingIntent);
    				updateNotificationManager.notify(0, updateNotification);
    				// 停止服务
    				stopSelf();
    				super.onSuccess(t);
    			}
    		});
    		return super.onStartCommand(intent, flags, startId);
    	}
    
    }

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[13929726567989.png]: http://img.tuyiyi.com/images/201402/13929726567989.png