CODEWITHSUNDEEP
androidc++qtandroid-settingsqtandroidextras
Dany19
Dany19

Reputation: 551

open android settings from QT app(com.android.settings)

I have an android application in QT. I would like to call android settings from a button.

I used this code in Java :

public void usb(View v){
    Intent intent = new Intent();  
    intent.setClassName("com.android.settings", "com.android.settings.DevelopmentSettings");  
    startActivity(intent);  
}

Is there a way to call android settings using QT C++?

Upvotes: 6

Views: 4114

Answers (4)

Jiri Zaloudek
Jiri Zaloudek

Reputation: 39

Combined both of your solutions and rewritten to QT6:

                QJniObject activity = QJniObject::callStaticObjectMethod("org/qtproject/qt/android/QtNative", "activity", "()Landroid/app/Activity;");
            if (activity.isValid()) {
                QJniObject param = QJniObject::fromString("package:com.package.appName");
                // Equivalent to Jave code: 'Uri uri = Uri::parse("...");'
                QJniObject uri = QJniObject::callStaticObjectMethod("android/net/Uri", "parse", "(Ljava/lang/String;)Landroid/net/Uri;", param.object<jstring>());
                if (!uri.isValid()) {
                    qWarning("Unable to create Uri object");
                    return;
                }
                QJniObject packageName = QJniObject::fromString("android.settings.APPLICATION_DETAILS_SETTINGS");

                QJniObject intent("android/content/Intent","(Ljava/lang/String;)V", packageName.object<jstring>());
                if (!intent.isValid()) {
                    qWarning("Unable to create Intent object");
                    return;
                }
                intent.callObjectMethod("addCategory", "(Ljava/lang/String;)Landroid/content/Intent;", QJniObject::fromString("android.intent.category.DEFAULT").object<jstring>());
                intent.callObjectMethod("setData", "(Landroid/net/Uri;)Landroid/content/Intent;", uri.object<jobject>());

                QtAndroidPrivate::startActivity(intent.object<jobject>(), 10101);
            }

tho I wander if there is an possibility to access directly permission page of specific permission, ie: i want to get into app permissions/Camera permission

Upvotes: 0

Daniel Nicoletti
Daniel Nicoletti

Reputation: 189

The accepted answer does not work with custom Android Settings Applications, and also failed on my new Android One phone, besides that, it opens on the Developer page.

Below is a working code (Qt 5.12) that opens the default settings appplication on first page and can easily be changed to open on other pages:

const QAndroidJniObject ACTION_SETTINGS = QAndroidJniObject::getStaticObjectField("android/provider/Settings",
                                                                                  "ACTION_SETTINGS",
                                                                                  "Ljava/lang/String;");
if (ACTION_SETTINGS.isValid()) {
    const QAndroidIntent intent(ACTION_SETTINGS.toString());
    QtAndroid::startActivity(intent.handle(), 10101);
}

Upvotes: 2

Sergey S
Sergey S

Reputation: 930

This is how you can open details of specific application (by package id) in Application Manager using Qt:

QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative", "activity", "()Landroid/app/Activity;");   //activity is valid
if (activity.isValid())
{
    QAndroidJniObject param = QAndroidJniObject::fromString("package:com.example.mycoolapp");
    // Equivalent to Jave code: 'Uri uri = Uri::parse("...");'
    QAndroidJniObject uri = QAndroidJniObject::callStaticObjectMethod("android/net/Uri", "parse", "(Ljava/lang/String;)Landroid/net/Uri;", param.object<jstring>());
    if (!uri.isValid()) {
        qWarning("Unable to create Uri object");
        return;
    }
    QAndroidJniObject packageName = QAndroidJniObject::fromString("android.settings.APPLICATION_DETAILS_SETTINGS");

    QAndroidJniObject intent("android/content/Intent","(Ljava/lang/String;)V", packageName.object<jstring>());
    if (!intent.isValid()) {
        qWarning("Unable to create Intent object");
        return;
    }
    intent.callObjectMethod("addCategory", "(Ljava/lang/String;)Landroid/content/Intent;", QAndroidJniObject::fromString("android.intent.category.DEFAULT").object<jstring>());
    intent.callObjectMethod("setData", "(Landroid/net/Uri;)Landroid/content/Intent;", uri.object<jobject>());

    activity.callObjectMethod("startActivity","(Landroid/content/Intent;)V",intent.object<jobject>());
}

Upvotes: 0

jpo38
jpo38

Reputation: 21514

QAndroidJniObject makes it possible to create JNI objects from Qt C++ code.

For example: to get the activity:

QAndroidJniObject activity =  QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative", "activity", "()Landroid/app/Activity;");

For example: to create a new Intent:

QAndroidJniObject intent("android/content/Intent","()V");

You can then step by step translate execute your java code from C++....

To answer your specific question, just copy/paste this code:

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 param1 = QAndroidJniObject::fromString("com.android.settings");
        QAndroidJniObject param2 = QAndroidJniObject::fromString("com.android.settings.DevelopmentSettings");

        if ( param1.isValid() && param2.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;",param1.object<jobject>(),param2.object<jobject>());

            // Equivalent to Jave code: 'startActivity(intent);'
            activity.callObjectMethod("startActivity","(Landroid/content/Intent;)V",intent.object<jobject>());
        }
    }
}

...and then vote up! ;-)

Upvotes: 19

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