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++?
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! ;-)
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>());
}
来源:https://stackoverflow.com/questions/25024615/open-android-settings-from-qt-appcom-android-settings