android创建通知栏（java版）
import android.app.Application;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.os.Build;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* 应用程序
*/
public class BaseApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
createNotificationChannel();
}
/**
* 创建通知栏渠道
*/
private void createNotificationChannel() {
/**
* 在API 26+ 创建NotificationChannel
*/
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
List> list = new ArrayList<>();
HashMap hashMap;
hashMap = new HashMap<>();
hashMap.put("name", "聊天");
hashMap.put("description", "聊天消息通知");
hashMap.put("channel", Constant.notifyChannelChat);
list.add(hashMap);
hashMap = new HashMap<>();
hashMap.put("name", "订阅");
hashMap.put("description", "订阅消息通知");
hashMap.put("channel", Constant.notifyChannelSubscription);
list.add(hashMap);
hashMap = new HashMap<>();
hashMap.put("name", "推荐");
hashMap.put("description", "推荐消息通知");
hashMap.put("channel", Constant.notifyChannelRecommend);
list.add(hashMap);
hashMap = new HashMap<>();
hashMap.put("name", "新闻");
hashMap.put("description", "新聞消息通知");
hashMap.put("channel", Constant.notifyChannelNews);
list.add(hashMap);
hashMap = new HashMap<>();
hashMap.put("name", "其他");
hashMap.put("description", "其他消息通知");
hashMap.put("channel", Constant.notifyChannelOther);
list.add(hashMap);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
for (int i = 0; i < list.size(); i++) {
HashMap map = list.get(i);
String textName = MapUtil.getMapValue(map, "name");
String textDescription = MapUtil.getMapValue(map, "description");
String textChannel = MapUtil.getMapValue(map, "channel");
NotificationChannel channelOther = new NotificationChannel(textChannel, textName, NotificationManager.IMPORTANCE_DEFAULT);
channelOther.setDescription(textDescription);
notificationManager.createNotificationChannel(channelOther);
}
}
}
}
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import java.util.HashMap;
import java.util.Map;
/**
* 主界面
*/
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.btn_notification).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Map map = new HashMap<>();
map.put("channel", "1");
map.put("title", "张三");
map.put("content", "你最近还好吗");
map.put("big_text", "-------------------------------------------------------------");
// https://developer.android.com/training/notify-user/build-notification?hl=zh-cn#java
NotificationUtil.sendNotification(MainActivity.this, map);
}
});
}
}
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationManagerCompat;
import android.text.TextUtils;
import java.util.Map;
import java.util.Random;
/**
* 通知栏工具类
*/
public class NotificationUtil {
public static void sendNotification(Context context, Map map) {
if (context != null && map != null) {
String channel = MapUtil.getMapValue(map, "channel", "0");
String channelId = Constant.notifyChannelOther;
switch (channel) {
case "0":
channelId = Constant.notifyChannelOther;
break;
case "1":
channelId = Constant.notifyChannelChat;
break;
case "2":
channelId = Constant.notifyChannelNews;
break;
case "3":
channelId = Constant.notifyChannelRecommend;
break;
case "4":
channelId = Constant.notifyChannelSubscription;
break;
}
String title = MapUtil.getMapValue(map, "title");
String content = MapUtil.getMapValue(map, "content");
// 设置通知内容，构造函数要求您提供通道ID。这是与Android 8.0（API级别26）及更高版本兼容所必需的，但旧版本会忽略这一点
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, channelId)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle(title)
.setContentText(content)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setAutoCancel(true)
.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));
String bigText = MapUtil.getMapValue(map, "big_text");
// 如果bigText的值不为空
if (!TextUtils.isEmpty(bigText)) {
// 如果您希望通知更长，可以通过添加样式模板来启用可扩展通知
mBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(bigText));
}
// 为应用中的活动创建明确的意图
Intent intent = new Intent(context, NotificationClickReceiver.class);
intent.setAction(NotificationClickReceiver.noticeClick);
intent.putExtras(MapUtil.getBundle(map));
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, new Random().nextInt(1000), intent, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(pendingIntent);
// 显示通知，注意：从Android 8.1（API级别27）开始，应用程序无法每秒发出超过一次的通知。
// 如果您的应用在一秒钟内发布了多个通知，则它们都会按预期显示，但每秒只有第一个通知发出声音
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(new Random().nextInt(1000), mBuilder.build());
}
}
}
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Toast;
/**
* 监听通知栏点击事件
*/
public class NotificationClickReceiver extends BroadcastReceiver {
public final static String noticeClick = "android.intent.action.noticeClick";
@Override
public void onReceive(Context context, Intent intent) {
if (context != null && intent != null && intent.getAction() != null && intent.getAction().equals(noticeClick)) {
// 通知栏被点击
Bundle bundle = intent.getExtras();
if (bundle != null) {
Toast.makeText(context, "收到消息", Toast.LENGTH_SHORT).show();
}
}
}
}
import android.os.Bundle;
import android.text.TextUtils;
import java.util.Map;
/**
* Map工具类
*/
public class MapUtil {
/**
* 根据map的key取map的值
*/
public static String getMapValue(Map map, String key) {
if (map != null && !TextUtils.isEmpty(key) && map.containsKey(key)) {
return map.get(key);
} else {
return "";
}
}
/**
* 根据map的key取map的值，当map的值为空时取传过来的默认值
*/
public static String getMapValue(Map map, String key, String defaultValue) {
if (map != null && !TextUtils.isEmpty(key) && map.containsKey(key)) {
String value = map.get(key);
if (value != null) {
return value;
} else {
return defaultValue;
}
} else {
return defaultValue;
}
}
/**
* 把map转换成bundle
*/
public static Bundle getBundle(Map map) {
Bundle bundle = new Bundle();
if (map != null) {
for (Map.Entry entry : map.entrySet()) {
String key = entry.getKey();
if (!TextUtils.isEmpty(key)) {
bundle.putString(key, entry.getValue());
}
}
}
return bundle;
}
}
/**
* 常量类
*/
public class Constant {
// 通知渠道ID：聊天
public final static String notifyChannelChat = "chat";
// 通知渠道ID：订阅
public final static String notifyChannelSubscription = "subscription";
// 通知渠道ID：推荐
public final static String notifyChannelRecommend = "recommend";
// 通知渠道ID：新闻
public final static String notifyChannelNews = "news";
// 通知渠道ID：其他
public final static String notifyChannelOther = "other";
}
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