要在安卓屏幕上显示通知LED,你可以使用以下步骤和代码示例:
private static final int REQUEST_NOTIFICATION_PERMISSION = 123;
private void checkNotificationPermission() {
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (notificationManager != null && !notificationManager.isNotificationPolicyAccessGranted()) {
Intent intent = new Intent(android.provider.Settings.ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS);
startActivityForResult(intent, REQUEST_NOTIFICATION_PERMISSION);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_NOTIFICATION_PERMISSION) {
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (notificationManager != null && notificationManager.isNotificationPolicyAccessGranted()) {
// 权限已授予,可以显示通知LED
enableNotificationLed();
}
}
}
private void enableNotificationLed() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
String channelId = "your_channel_id";
String channelName = "Your Channel Name";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel notificationChannel = new NotificationChannel(channelId, channelName, importance);
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (notificationManager != null) {
notificationManager.createNotificationChannel(notificationChannel);
}
}
}
private void showNotification() {
String channelId = "your_channel_id";
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.drawable.your_notification_icon)
.setContentTitle("Notification Title")
.setContentText("Notification Text")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(notificationId, builder.build());
}
以上步骤和代码示例将帮助你在安卓屏幕上显示通知LED。
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