The source code of the live broadcast platform, the relevant code for the realization of the sliding progress bar displayed in the notification bar
private NotificationManager notificationManager;
private NotificationCompat.Builder builder;
private NotificationClickReceiver notificationClickReceiver;
public class DownloadManager {
private static final String TAG = "DownloadManager";
private Context mContext;
private String downloadUrl;
private String savePath;
private DownloadRecord downloadRecord;
/**
* 下载
*
* @param context 上下文
* @param downloadUrl 下载地址
* @param savePath 下载后保存到本地的路径
*/
public void download(Context context, String downloadUrl, String savePath) {
this.mContext = context;
this.downloadUrl = downloadUrl;
this.savePath = savePath;
try {
downloadRecord = Downloader.createRecord(downloadUrl, savePath,
new DownloadListenerAdapter() {
@Override
public void onTaskStart(DownloadRecord record) {
Log.d(TAG, "onTaskStart");
initNotification();
}
public void onTaskPause(DownloadRecord record) {
Log.d(TAG, "onTaskPause");
}
public void onTaskCancel(DownloadRecord record) {
Log.d(TAG, "onTaskCancel");
}
public void onProgressChanged(DownloadRecord record, int progress) {
Log.d(TAG, "onProgressChanged progress=" + progress);
updateNotification(progress);
}
@Override
public void onTaskSuccess(DownloadRecord record) {
Log.d(TAG, "onTaskSuccess");
showInstall();
}
@Override
public void onTaskFailure(DownloadRecord record, Throwable throwable) {
Log.e(TAG, "onTaskFailure error=" + throwable);
updateNotification(-1);
}
});
} catch (Exception x) {
Log.e(TAG, "download error=" + x);
}
}
/**
* 初始化通知
*/
private void initNotification() {
try {
notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
// Android8.0及以后的方式
if (Build.VERSION.SDK_INT >= 26) {
// 创建通知渠道
NotificationChannel notificationChannel = new NotificationChannel("download_channel", "下载",
NotificationManager.IMPORTANCE_DEFAULT);
notificationChannel.enableLights(false); //关闭闪光灯
notificationChannel.enableVibration(false); //关闭震动
notificationChannel.setSound(null, null); //设置静音
notificationManager.createNotificationChannel(notificationChannel);
}
builder = new NotificationCompat.Builder(mContext, "download_channel");
builder.setContentTitle("已下载(0%)") //设置标题
.setSmallIcon(mContext.getApplicationInfo().icon) //设置小图标
.setLargeIcon(BitmapFactory.decodeResource(mContext.getResources(),
mContext.getApplicationInfo().icon)) //设置大图标
.setPriority(NotificationCompat.PRIORITY_MAX) //设置通知的优先级
.setAutoCancel(false) //设置通知被点击一次不自动取消
.setSound(null) //设置静音
.setContentText("正在下载 点击取消") //设置内容
.setProgress(100, 0, false) //设置进度条
.setContentIntent(createIntent()); //设置点击事件
notificationManager.notify(100, builder.build());
} catch (Exception x) {
Log.e(TAG, "initNotification error=" + x);
}
}
/**
* 刷新通知
*
* @param progress 百分比，此值小于0时不刷新进度条
*/
private void updateNotification(int progress) {
if (builder == null) {
return;
}
if (progress >= 0) {
builder.setContentTitle("已下载(" + progress + "%)");
builder.setProgress(100, progress, false);
}
if (downloadRecord == null || downloadRecord.getState() == DownloadRecord.STATE_FAILURE) {
builder.setContentText("下载失败 点击重试");
} else if (progress == 100) {
builder.setContentText("下载完成 点击安装");
builder.setAutoCancel(true);
}
notificationManager.notify(100, builder.build());
}
/**
* 设置通知点击事件
*
* @return 点击事件
*/
private PendingIntent createIntent() {
Intent intent = new Intent(mContext.getPackageName() + ".upgrade.notification");
intent.setPackage(mContext.getPackageName());
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
return pendingIntent;
}
/**
* 注册通知点击监听
*/
private void registerReceiver() {
notificationClickReceiver = new NotificationClickReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(mContext.getPackageName() + ".upgrade.notification");
mContext.registerReceiver(notificationClickReceiver, intentFilter);
}
/**
* 处理通知栏点击事件
*/
public class NotificationClickReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (!(mContext.getPackageName() + ".upgrade.notification").equals(action)) {
return;
}
if (downloadRecord != null) {
int state = downloadRecord.getState();
Log.d(TAG, "onReceive state=" + state);
switch (state) {
case DownloadRecord.STATE_CREATE:
case DownloadRecord.STATE_PENDING:
case DownloadRecord.STATE_RUNNING:
case DownloadRecord.STATE_PAUSE:
// 关闭通知栏
notificationManager.cancel(100);
break;
case DownloadRecord.STATE_SUCCESS:
// 显示安装确认弹窗
showInstallAlert(true);
break;
case DownloadRecord.STATE_FAILURE:
// 重新下载
download(mContext, this.downloadUrl, this.savePath);
break;
default:
break;
}
}
}
}
}
The above is the source code of the live broadcast platform. The relevant code of the sliding progress bar is displayed in the notification bar. For more content, please pay attention to the future articles.