Android开发通知详解适配8.0手机，解决华为手机一直有声音提示)

这里先引入一篇博客，讲解华为手机怎么取消进度条情况下一直提示有声音https://blog.csdn.net/fzkf9225/article/details/81119780

https://www.jianshu.com/p/8cec293cfa9a安卓8.0通知适配

接下来引入一个通知工具类：

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.content.Context;
import android.content.ContextWrapper;
import android.graphics.BitmapFactory;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v4.app.NotificationCompat;

public class NotificationUtil extends ContextWrapper {
    private NotificationManager mManager;
    public static final String sID = "channel_1";
    public static final String sName = "channel_name_1";

    public NotificationUtil(Context context) {
        super(context);
    }

     public void sendNotification(String title, String content,int total,int progress) {
        if (Build.VERSION.SDK_INT >= 26) {
            createNotificationChannel();
            Notification notification = getNotification_26(title, content,total,progress).build();
            getmManager().notify(1, notification);
        } else {
            Notification notification = getNotification_25(title, content,total,progress).build();
            getmManager().notify(1, notification);
        }
    }


    private NotificationManager getmManager() {
        if (mManager == null) {
            mManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        }
        return mManager;
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    public void createNotificationChannel() {
        NotificationChannel channel = new NotificationChannel(sID, sName, NotificationManager.IMPORTANCE_HIGH);
        getmManager().createNotificationChannel(channel);
    }

    public NotificationCompat.Builder getNotification_25(String title, String content,int total,int progress) {

        // 以下是展示大图的通知
        android.support.v4.app.NotificationCompat.BigPictureStyle style = new android.support.v4.app.NotificationCompat.BigPictureStyle();
        style.setBigContentTitle("BigContentTitle");
        style.setSummaryText("SummaryText");
        style.bigPicture(BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher_background));

        // 以下是展示多文本通知
        android.support.v4.app.NotificationCompat.BigTextStyle style1 = new android.support.v4.app.NotificationCompat.BigTextStyle();
        style1.setBigContentTitle(title);
        style1.bigText(content);

        return new NotificationCompat.Builder(getApplicationContext())
                .setContentTitle(title)
                .setContentText(progress*100/total+"%")
                .setSmallIcon(R.mipmap.download)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher_round))
                .setStyle(style)
                .setProgress(total,progress,false)
                .setAutoCancel(true);
    }
    @RequiresApi(api = Build.VERSION_CODES.O)
    public Notification.Builder getNotification_26(String title, String content,int total,int progress) {
        return new Notification.Builder(getApplicationContext(), sID)
                .setContentTitle(title)
                .setContentText(progress+"%")
                .setSmallIcon(R.mipmap.download)
                .setProgress(total,progress,false)
                .setAutoCancel(true);
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    public Notification.Builder getNotification_26(String title, String content) {
        return new Notification.Builder(getApplicationContext(), sID)
                .setContentTitle(title)
                .setContentText(content)
                .setSmallIcon(R.mipmap.download)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher_round))
                .setStyle(new Notification.BigPictureStyle().bigPicture(BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher_background)))
                .setNumber(1)
                .setAutoCancel(true);
    }


}