如何交流两个Qt Android APK

Question

我正在尝试使用Intent交流两个Android（基于Qt）应用程序，但无法正常工作。

它们是两个应用程序，即桌面应用程序和返回应用程序，在这里您可以看到清单

---

桌面清单

    <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density" android:name="org.qtproject.qt5.android.bindings.QtActivity" android:label="Desktop" android:screenOrientation="landscape" android:launchMode="singleTop">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>

返回清单

    <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density" android:name="org.qtproject.qt5.android.bindings.QtActivity" android:label="Return" android:screenOrientation="landscape" android:launchMode="singleTop">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>

我正在尝试通过台式机应用程序使用此代码，试图调用return应用程序（均在Qt + Android中）

QString packageName="org.qtproject.qt5.android.bindings.QtActivity";
QString className="Return";
qDebug() << "Start app: " <<packageName <<", "<<className;
  QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod(
              "org/qtproject/qt5/android/QtNative", "activity",
              "()Landroid/app/Activity;");   //activity is valid

  if ( activity.isValid() )
  {
      // Equivalent to Jave code: 'Intent intent = new Intent();'
      QAndroidJniObject intent("android/content/Intent","()V");

      if ( intent.isValid() )
      {
          QAndroidJniObject jPackageName = QAndroidJniObject::fromString(packageName);
          QAndroidJniObject jClassName = QAndroidJniObject::fromString(className);

          if ( jPackageName.isValid() && jClassName.isValid() )
          {
              // Equivalent to Jave code: 'intent.setClassName("com.android.settings", "com.android.settings.DevelopmentSettings");'
              intent.callObjectMethod("setClassName",
                                      "(Ljava/lang/String;Ljava/lang/String;)Landroid/content/Intent;",
                                      jPackageName.object<jstring>(),jClassName.object<jstring>());

              jint flag = QAndroidJniObject::getStaticField<jint>(
                          "android/content/Intent",
                          "FLAG_ACTIVITY_NEW_TASK");

              intent.callObjectMethod("setFlags", "(I)V",flag);

              // Equivalent to Jave code: 'startActivity(intent);'
              QAndroidJniEnvironment env;
              activity.callMethod<void>(
                          "startActivity",
                          "(Landroid/content/Intent;)V",
                          intent.object<jobject>());
              if (env->ExceptionCheck()) {
                  qDebug() << "Intent not found!";
                  env->ExceptionClear(); // TODO: stupid method! Remove this!
              }
          } else {
              qDebug() << "Action is not valid";
          }
      } else {
          qDebug() << "Intent is not valid";
      }
  } else {
      qDebug() << "Activity is not valid";
  }

我总是收到“找不到意图！”

预先感谢， 塞尔吉奥