Android 8.0系统通知栏适配Demo

package com.example.notificationtest; import android.annotation.TargetApi; import android.app.Notification; import android.app.NotificationChannel; import android.app.NotificationManager; import android.content.Intent; import android.graphics.BitmapFactory; import android.os.Build; import android.provider.Settings; import android.support.v4.app.NotificationCompat; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { String channelId = "chat"; String channelName = "聊天消息"; int importance = NotificationManager.IMPORTANCE_HIGH; createNotificationChannel(channelId, channelName, importance); channelId = "subscribe"; channelName = "订阅消息"; importance = NotificationManager.IMPORTANCE_DEFAULT; createNotificationChannel(channelId, channelName, importance); } } @TargetApi(Build.VERSION_CODES.O) private void createNotificationChannel(String channelId, String channelName, int importance) { NotificationChannel channel = new NotificationChannel(channelId, channelName, importance); channel.setShowBadge(true); NotificationManager notificationManager = (NotificationManager) getSystemService( NOTIFICATION_SERVICE); notificationManager.createNotificationChannel(channel); } public void sendChatMsg(View view) { NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { NotificationChannel channel = manager.getNotificationChannel("chat"); if (channel.getImportance() == NotificationManager.IMPORTANCE_NONE) { Intent intent = new Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS); intent.putExtra(Settings.EXTRA_APP_PACKAGE, getPackageName()); intent.putExtra(Settings.EXTRA_CHANNEL_ID, channel.getId()); startActivity(intent); Toast.makeText(this, "请手动将通知打开", Toast.LENGTH_SHORT).show(); } } Notification notification = new NotificationCompat.Builder(this, "chat") .setContentTitle("收到一条聊天消息") .setContentText("今天中午吃什么？") .setWhen(System.currentTimeMillis()) .setSmallIcon(R.drawable.icon) .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.icon)) .setAutoCancel(true) .build(); manager.notify(1, notification); } public void sendSubscribeMsg(View view) { NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); Notification notification = new NotificationCompat.Builder(this, "subscribe") .setContentTitle("收到一条订阅消息") .setContentText("地铁沿线30万商铺抢购中！") .setWhen(System.currentTimeMillis()) .setSmallIcon(R.drawable.icon) .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.icon)) .setAutoCancel(true) .setNumber(2) .build(); manager.notify(2, notification); } }