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Android 通知栏推送功能

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

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;@Overrideprotected 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() {@Overridepublic 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

<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"><Buttonandroid: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

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 {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_second);}
}

activity_second.xml

<?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"><TextViewandroid: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 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" /><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_lol_icon"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid: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

<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"><pathandroid: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>