My Webview App keeps crashing for messenger chat

问题

Everything works as it should except messenger. Code

if (url.startsWith("www.messenger.com")) {
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                startActivity(intent);
                return true;
            }

For messenger even for this general intent code it doesnt show the option to open with messenger

if (url.startsWith("intent")){
                Intent sendIntent = new Intent();
                sendIntent.setAction(Intent.ACTION_VIEW);
                if (sendIntent.resolveActivity(getPackageManager()) != null) {
                    startActivity(sendIntent);
                }
                return true;
            }

With protocol Error logs:

2020-08-28 17:21:24.098 16802-16802/com.mesports.ga E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.mesports.ga, PID: 16802
    android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=intent://user/102700191461284/?intent_trigger=mme&ref=c4254e87a85bef8dd4c3e74bc771d099dda9c6bb22e340c644&nav=discover&source=customer_chat_plugin&source_id=1507329&metadata={"referer_uri":"https:\/\/m-esports.ga\/f2d7b535e73be5c"} }
        at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2014)
        at android.app.Instrumentation.execStartActivity(Instrumentation.java:1675)
        at android.app.Activity.startActivityForResult(Activity.java:4586)
        at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:676)
        at android.app.Activity.startActivityForResult(Activity.java:4544)
        at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:663)
        at android.app.Activity.startActivity(Activity.java:4905)
        at android.app.Activity.startActivity(Activity.java:4873)
        at com.mesports.ga.MainActivity$MyWebviewClient.shouldOverrideUrlLoading(MainActivity.java:194)
        at android.webkit.WebViewClient.shouldOverrideUrlLoading(WebViewClient.java:77)
        at org.chromium.android_webview.AwContentsClientBridge.shouldOverrideUrlLoading(chromium-Monochrome.aab-stable-418308173:16)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:326)
        at android.os.Looper.loop(Looper.java:160)
        at android.app.ActivityThread.main(ActivityThread.java:6762)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

even by using http and https protocols it is showing the same error

Here's the android manifest file

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mesports.ga">
    <uses-permission  android:name="android.permission.INTERNET"></uses-permission>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity"
            android:screenOrientation="portrait">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>
        </activity>
    </application>

</manifest>

回答1:

You need to register your activity in manifest file

回答2:

I finally figured out how to do it with WebView.

First, get Your Messenger URL from Page Settings-> Messaging. As shown in the below image.

After that handle the "intent:" case to be opened by an external browser. Use "https://" with your messenger URL.

if(url.startsWith("intent:"))
            {
                Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("https://m.me/***********"));
                startActivity(i);
                return true;
            }

And, you are done. Phew!

来源：https://stackoverflow.com/questions/63628794/my-webview-app-keeps-crashing-for-messenger-chat