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我想知道在Android的電池技術。我用廣播接收器完成並完成了Javacode。但是當我使用java類來獲取Qt中的電池時,意圖不會從java代碼運行。所以我決定讓它運行在Qt中。錯誤,但我不知道爲什麼
QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative", "activity", "()Landroid/app/Activity;");
if (activity.isValid())
{
QAndroidJniObject callConstant = QAndroidJniObject::getStaticObjectField<jstring>("android/content/Intent", "ACTION_BATTERY_CHANGED");
QAndroidJniObject callIntent("android/content/Intent", "(Ljava/lang/String;)V", callConstant.object());
QAndroidJniObject param = QAndroidJniObject::fromString("technology") ;
mySubstring = callIntent.callObjectMethod("getStringExtra"
,"(Ljava/lang/String;)Ljava/lang/String;"
,param.object()) ;
if(callIntent.isValid())
{
activity.callObjectMethod("startActivity", "(Landroid/content/Intent;)V", callIntent.object<jobject>());
//activity.callMethod<void>("startActivity","(Landroid/content/Intent;)V", callIntent.object<jobject>());
}
}
兩條線使程序停止非常糟糕。我仍然沒有找到
activity.callObjectMethod("startActivity", "(Landroid/content/Intent;)V", callIntent.object<jobject>());
//activity.callMethod<void>("startActivity","(Landroid/content/Intent;)V", callIntent.object<jobject>());
Pro週末愉快! 。