添加启动屏幕时，java webview URL未通过FCM更新
我按照this tutorial制作了一个简单的webview应用程序，其中webview的url可以从一个键和一个Firebase通知的值更新，webview加载一个静态url，但也加载FCM通知值中指定的新url
onNewIntent(getIntent());从包含键：webURL和存储在STR_KEY中的值：https://www.newurl.com/的mRegistrationBroadcastReceiver获取意图
一切正常，当应用程序位于后台和前台时，url会完美更新。。。在我在应用程序中添加启动屏幕之前，在本例中，当应用程序位于后台且FCM通知到达时，webview的url不会更新，但在前台时会更新
我最好的猜测是Intent intent = new Intent(getBaseContext(), MainActivity.class);丢失了，因为启动屏幕首先加载，而不是主要活动，但我是一个noob，这超出了我拥有的3个神经元
这是我的舱单：
<application
安卓:allowBackup="true"
安卓:icon="@mipmap/ic_launcher"
安卓:label="@string/app_name"
安卓:roundIcon="@mipmap/ic_launcher_round"
安卓:supportsRtl="true"
安卓:theme="@style/AppTheme">
<activity 安卓:name=".Splash">
<intent-filter>
<action 安卓:name="安卓.intent.action.MAIN" />
<category 安卓:name="安卓.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity 安卓:name=".MainActivity"></activity>
<service 安卓:name=".MyService">
<intent-filter>
<action 安卓:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
</application>
我的FCM服务：
import 安卓.content.Intent;
import 安卓.support.v4.content.LocalBroadcastManager;
import 安卓.util.Log;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
public class MyService extends FirebaseMessagingService {
public static final String STR_KEY = "webURL";
public static final String STR_PUSH = "pushNotification";
public static final String STR_MESSAGE = "message";
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
handleMessage(remoteMessage.getData().get(STR_KEY));
}
private void handleMessage(String message) {
Intent pushNotification = new Intent(STR_PUSH);
pushNotification.putExtra(STR_MESSAGE, message);
LocalBroadcastManager.getInstance(this).sendBroadcast(pushNotification);
}
@Override
public void onNewToken(String token) {
super.onNewToken(token);
sendRegistrationToServer(token);
}
private void sendRegistrationToServer(String token) {
Log.d("new Token", token);
}
}
我的主要活动：
public class MainActivity extends AppCompatActivity {
WebView webView;
private BroadcastReceiver mRegistrationBroadcastReceiver;
@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = findViewById(R.id.webView);
webView.getSettings().setPluginState(WebSettings.PluginState.OFF);
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
webView.getSettings().setUseWideViewPort(true);
webView.getSettings().setUserAgentString("Android Mozilla/5.0
AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30");
webView.getSettings().setAllowFileAccess(true);
webView.getSettings().setAllowContentAccess(true);
webView.getSettings().supportZoom();
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setSupportZoom(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("https://www.mywebsite.com/");
mRegistrationBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(STR_PUSH)) {
String message = intent.getStringExtra(STR_MESSAGE);
showNotification("New URL", message);
}
}
};
onNewIntent(getIntent());
}
@Override
protected void onNewIntent(Intent intent) {
webView.loadUrl(intent.getStringExtra(STR_KEY));
}
private void showNotification(String title, String message) {
Intent intent = new Intent(getBaseContext(), MainActivity.class);
intent.putExtra(STR_KEY, message);
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent contentIntent = PendingIntent.getActivity(getBaseContext(), 0,
intent, PendingIntent.FLAG_UPDATE_CURRENT);
Notification.Builder builder = new Notification.Builder(getBaseContext());
builder.setAutoCancel(true)
.setWhen(System.currentTimeMillis())
.setDefaults(Notification.DEFAULT_ALL)
.setSmallIcon(R.mipmap.ic_launcher_round)
.setContentTitle(title)
.setContentText(message)
.setContentIntent(contentIntent);
NotificationManager notificationManager = (NotificationManager)
getBaseContext().getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
String channelId = getString(R.string.normal_channel_id);
String channelName = getString(R.string.normal_channel_name);
NotificationChannel channel = new NotificationChannel(channelId,
channelName, NotificationManager.IMPORTANCE_DEFAULT);
channel.enableVibration(true);
channel.setVibrationPattern(new long[]{100, 200, 200, 50});
if (notificationManager != null) {
notificationManager.createNotificationChannel(channel);
}
builder.setChannelId(channelId);
}
if (notificationManager !=null) {
notificationManager.notify("", 0, builder.build());
}
}
@Override
protected void onPause() {
LocalBroadcastManager.getInstance(this).unregisterReceiver
(mRegistrationBroadcastReceiver);
super.onPause();
}
@Override
protected void onResume() {
super.onResume();
LocalBroadcastManager.getInstance(this).registerReceiver
(mRegistrationBroadcastReceiver, new IntentFilter("registrationComplete"));
LocalBroadcastManager.getInstance(this).registerReceiver
(mRegistrationBroadcastReceiver, new IntentFilter(STR_PUSH));
}
}
还有我的闪屏：
public class Splash extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
int SPLASH_TIME_OUT = 4000;
new Handler().postDelayed(() -> {
Intent homeIntent = new Intent(Splash.this, MainActivity.class);
startActivity(homeIntent);
finish();
}, SPLASH_TIME_OUT);
}
}
# 1 楼答案
我认为您应该在不使用布局文件的情况下实现启动屏幕，因为从专用启动屏幕活动启动第二个活动会有延迟
这篇文章可能会有所帮助
这样，启动屏幕将仅在应用程序处于加载状态时显示。因此，即使应用程序在后台运行，它也可以防止您的问题
# 2 楼答案