前台服务 通知遇到的问题
大家好，我这复习Service时候，看到了 前台服务，于是写了一下，首先新建一个 服务：
public class QianService extends Service {
@Nullable
@Override
public IBinder onBind(Intent intent) {
Log.d("info","前台服务 onBind");
return null;
}
@Override
public void onCreate() {
super.onCreate();
Log.d("info","前台服务 onCreate");
// 初始化
NotificationManager messageNotificatioManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
//
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));
builder.setContentTitle("服务标题");
builder.setContentText("哈哈哈哈 测试服务");
builder.setWhen(System.currentTimeMillis());
builder.setChannelId("5996773");
Intent notificationIntent = new Intent(this, MainActivity2.class);
PendingIntent pt = PendingIntent.getActivity(this, 0, notificationIntent, 0);
builder.setContentIntent(pt);
Notification notification = builder.build();
startForeground(1, notification);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d("info","前台服务 onStartCommand");
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("info","前台服务 onDestroy");
}
}
第二步 ，在AndroidMainfest.xml注册：
<!-- 前台服务-->
<service android:name=".service.QianService"
android:enabled="true"
android:exported="true"></service>
第三步 ，然后运行，开启 服务：
//前台服务 通知栏提示
Intent intent = new Intent(this,QianService.class);
startService(intent);
就这样，然后我发现，打开服务后，闪退了，额 思考一下， 哦 我似乎没有开启权限；
如下是我的 开启通知权限方法：
public class UtilsNew {
//监测通知权限
public static boolean isPermissionOpen(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
return NotificationManagerCompat.from(context).getImportance() != NotificationManager.IMPORTANCE_NONE;
}
return NotificationManagerCompat.from(context).areNotificationsEnabled();
}
public static void openPermissionSetting(Context context) {
try {
Intent localIntent = new Intent();
localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//直接跳转到应用通知设置的代码：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
localIntent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
localIntent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());
context.startActivity(localIntent);
return;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
localIntent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
localIntent.putExtra("app_package", context.getPackageName());
localIntent.putExtra("app_uid", context.getApplicationInfo().uid);
context.startActivity(localIntent);
return;
}
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
localIntent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
localIntent.addCategory(Intent.CATEGORY_DEFAULT);
localIntent.setData(Uri.parse("package:" + context.getPackageName()));
context.startActivity(localIntent);
return;
}
//4.4以下没有从app跳转到应用通知设置页面的Action，可考虑跳转到应用详情页面,
if (Build.VERSION.SDK_INT >= 9) {
localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
localIntent.setData(Uri.fromParts("package", context.getPackageName(), null));
context.startActivity(localIntent);
return;
}
localIntent.setAction(Intent.ACTION_VIEW);
localIntent.setClassName("com.android.settings", "com.android.setting.InstalledAppDetails");
localIntent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());
} catch (Exception e) {
e.printStackTrace();
System.out.println(" cxx pushPermission 有问题");
}
}
}
然后呢，我再试测试，发现 哦 不行啊，提示错误：
Permission Denial: startForeground from pid=27589, uid=10168 requires android.permission.FOREGROUND_。。。。
于是乎 搜了一下，哦 ，需要在 AndroidManifest.xml添加权限：
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
测试之后 发现，额 为何还是 闪退，哈哈哈哈 好吧， 最后一次了：
如下 添加一个 channel即可：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel("5996773", "安卓10a", NotificationManager.IMPORTANCE_DEFAULT);
channel.enableLights(true);//是否在桌面icon右上角展示小红点
channel.setLightColor(Color.GREEN);//小红点颜色
channel.setShowBadge(false); //是否在久按桌面图标时显示此渠道的通知
messageNotificatioManager.createNotificationChannel(channel);
}
下面我再 贴上 服务类的完整代码吧：
package com.example.androidstudy.service;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Build;
import android.os.IBinder;
import android.util.Log;
import com.example.androidstudy.R;
import androidx.annotation.Nullable;
import androidx.core.app.NotificationCompat;
public class QianService extends Service {
@Nullable
@Override
public IBinder onBind(Intent intent) {
Log.d("info","前台服务 onBind");
return null;
}
@Override
public void onCreate() {
super.onCreate();
Log.d("info","前台服务 onCreate");
// 初始化
NotificationManager messageNotificatioManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel("5996773", "安卓10a", NotificationManager.IMPORTANCE_DEFAULT);
channel.enableLights(true);//是否在桌面icon右上角展示小红点
channel.setLightColor(Color.GREEN);//小红点颜色
channel.setShowBadge(false); //是否在久按桌面图标时显示此渠道的通知
messageNotificatioManager.createNotificationChannel(channel);
}
//
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));
builder.setContentTitle("服务标题");
builder.setContentText("哈哈哈哈 测试服务");
builder.setWhen(System.currentTimeMillis());
builder.setChannelId("5996773");
Intent notificationIntent = new Intent(this, MainActivity2.class);
PendingIntent pt = PendingIntent.getActivity(this, 0, notificationIntent, 0);
builder.setContentIntent(pt);
Notification notification = builder.build();
startForeground(1, notification);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d("info","前台服务 onStartCommand");
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("info","前台服务 onDestroy");
}
}
希望能给大家带来 作用，因为这个小问题吧， 困扰了我好一会儿，