我在QT有一个
Android应用程序.
我想从一个按钮调用android设置.
我想从一个按钮调用android设置.
public void usb(View v){
Intent intent = new Intent();
intent.setClassName("com.android.settings","com.android.settings.DevelopmentSettings");
startActivity(intent);
}
解决方法
QAndroidJniObject可以从Qt C代码创建JNI对象.
QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative","activity","()Landroid/app/Activity;");
例如：创建一个新的Intent：@H_502_4@
QAndroidJniObject intent("android/content/Intent","()V");
然后你可以一步一步地从C语言中执行你的java代码….@H_502_4@
要回答您的具体问题,只需复制/粘贴此代码：@H_502_4@
QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative","()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>());
}
}
}
……然后投票！
