前言：在最近学习安卓通知功能的开发中，遇到了一些坑，困扰了我一些时间，搜集了大量资料写个博客总结一下，希望对大家有帮助。 

目录

一、启动项目闪退

1.1、问题详情

1.2、解决方法

二、点击通知无法跳转

2.1、问题详情

2.2、解决方法

三、通知功能完整代码

MainActivity

activity_main.xml

NotificationActivity 

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一、启动项目闪退

1.1、问题详情

完整报错如下：

Caused by: java.lang.IllegalArgumentException: com.example.myapplication: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent. Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles. at android.app.PendingIntent.checkPendingIntent(PendingIntent.java:461) at android.app.PendingIntent.getActivityAsUser(PendingIntent.java:577) at android.app.PendingIntent.getActivity(PendingIntent.java:563) at android.app.PendingIntent.getActivity(PendingIntent.java:527) at com.example.myapplication.MainActivity.onCreate(MainActivity.java:46) at android.app.Activity.performCreate(Activity.java:8980) at android.app.Activity.performCreate(Activity.java:8958) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1526) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4013) ... 13 more

1.2、解决方法

查阅了大量资料发现在创建PendingIntent的时候因为SDK的版本导致启动app闪退，需要根据不同系统版本创建带有不同flag的PendingIntent，代码如下：

PendingIntent pendingIntent;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S) {pendingIntent = PendingIntent.getActivity(this, 123, intent, PendingIntent.FLAG_IMMUTABLE);
} else {pendingIntent = PendingIntent.getActivity(this, 123, intent, PendingIntent.FLAG_ONE_SHOT);
}

二、点击通知无法跳转

2.1、问题详情

点击通知后无法进行跳转。

2.2、解决方法

需要在AndroidManifest.xml文件里面配置一下自己创建的实体类。

三、通知功能完整代码

MainActivity

package com.example.myapplication;import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.NotificationCompat;import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.view.View;public class MainActivity extends AppCompatActivity {private static final String TAG = "leo";public NotificationManager manager;public Notification notification;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){NotificationChannel channel = new NotificationChannel("leo","测试通知",NotificationManager.IMPORTANCE_HIGH);manager.createNotificationChannel(channel);}Intent intent = new Intent(this,NotificationActivity.class);PendingIntent pendingIntent;if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S) {pendingIntent = PendingIntent.getActivity(this, 123, intent, PendingIntent.FLAG_IMMUTABLE);} else {pendingIntent = PendingIntent.getActivity(this, 123, intent, PendingIntent.FLAG_ONE_SHOT);}notification = new NotificationCompat.Builder(this, "leo").setContentTitle("官方通知").setContentText("世界那么大，我想去看看").setSmallIcon(R.drawable.baseline_star_rate_24).setLargeIcon(BitmapFactory.decodeResource(getResources(),R.drawable.baseline_star_rate_24)).setColor(Color.parseColor("#ff0000")).setContentIntent(pendingIntent).setAutoCancel(true).build();}public void sendNotification(View view){manager.notify(1,notification);}public void cancelNotification(View view){manager.cancel(1);}}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="sendNotification"android:text="发出通知"></Button><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:onClick="cancelNotification"android:text="取消通知"></Button></LinearLayout>

NotificationActivity 

package com.example.myapplication;import android.app.Activity;
import android.os.Bundle;
import android.util.Log;import androidx.annotation.Nullable;public class NotificationActivity extends Activity {@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);Log.e("leo","onCreate：进步NotificationActivity");}
}

运行成功：