Android 通知栏推送功能

让消息在用户的通知栏上显示，并且点击后跳转到指定的页面

MainActivity.Java

java 复制代码

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.appcompat.app.AppCompatActivity;


public class MainActivity extends AppCompatActivity {

    private static final String CHANNEL_ID = "my_channel_id";
    private static final String CHANNEL_NAME = "My Channel";
    private static final String CHANNEL_DESCRIPTION = "This is my notification channel";
    Bitmap bitmap = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button buttonSendNotification = findViewById(R.id.btn_show_normal);
        buttonSendNotification.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int id = v.getId();
                if (id == R.id.btn_show_normal) {
                    sendNotification();
                }
            }
        });
    }

    private void sendNotification() {
        bitmap = BitmapFactory.decodeResource(this.getResources(), R.drawable.dzq);
        Intent intent = new Intent(this, SecondActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
            notificationChannel.setDescription(CHANNEL_DESCRIPTION);
            notificationManager.createNotificationChannel(notificationChannel);
        }

        Notification notification = null;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            notification = new Notification.Builder(this, CHANNEL_ID)
                    .setContentTitle("My Notification")
                    .setContentText("This is the body of my notification")
                    .setSmallIcon(R.drawable.ic_launcher_foreground)
                    .setLargeIcon(bitmap)
                    .setContentIntent(pendingIntent)
                    .setAutoCancel(true)
                    .build();
        }

        notificationManager.notify(0, notification);
    }
}

activity_main.xml

xml 复制代码

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_show_normal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="显示普通的Notification" />


</LinearLayout>

SecondActivity.Java

java 复制代码

import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

/**
 * Created by Jay on 2015/9/28 0028.
 */
public class SecondActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
    }
}

activity_second.xml

xml 复制代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SecondActivity">



    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="阿三大苏打实打实"
        android:layout_centerInParent="true"/>

</RelativeLayout>

AndoirdManifest.xml

xml 复制代码

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.xxh.mynotification" >

    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
    <uses-permission android:name="android.permission.VIBRATE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_lol_icon"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".SecondActivity"/>
    </application>

</manifest>

R.drawable.ic_launcher_foreground.xml

xml 复制代码

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="24"
    android:viewportHeight="24"
    android:tint="#000000">
  <group android:scaleX="0.6264"
      android:scaleY="0.6264"
      android:translateX="4.4832"
      android:translateY="4.4832">
    <path
        android:fillColor="@android:color/white"
        android:pathData="M7,15H5.5v-4.5H4V9h3V15zM13.5,13.5h-3v-1h2c0.55,0 1,-0.45 1,-1V10c0,-0.55 -0.45,-1 -1,-1H9v1.5h3v1h-2c-0.55,0 -1,0.45 -1,1V15h4.5V13.5zM19.5,14v-4c0,-0.55 -0.45,-1 -1,-1H15v1.5h3v1h-2v1h2v1h-3V15h3.5C19.05,15 19.5,14.55 19.5,14z"/>
  </group>
</vector>