从QT应用程序打开android设置（com.android.settings） [英] open android settings from QT app(com.android.settings)

问题描述

我有一个Android应用程序在QT。
我想从一个按钮调用android设置。

我在Java中使用了这个代码：

  public void usb View v）{
 Intent intent = new Intent（）; 
 intent.setClassName（com.android.settings，com.android.settings.DevelopmentSettings）; 
 startActivity（intent）;有没有办法使用QT C ++调用Android设置？
有没有办法使用QT C ++调用android设置？
 
 
解决方案
 QAndroidJniObject可以从Qt C ++代码创建JNI对象。
 
 
 
示例：获取活动：
  QAndroidJniObject activity = QAndroidJniObject :: callStaticObjectMethod（org / qtproject / qt5 / android / QtNative ，activity，（）Landroid / app / Activity;）; 
  
例如：创建一个新的Intent：
  QAndroidJniObject intent（android / content / Intent，（）V）; 
  
然后，您可以一步一步翻译从C ++ ....执行您的Java代码.... 
 
 
 
要回答您的具体问题，只需复制/粘贴此代码：
  QAndroidJniObject = QAndroidJniObject :: callStaticObjectMethod（org / qtproject / qt5 / android / QtNative，activity，（）Landroid / app / Activity;）; // activity is valid 
 if（activity.isValid（））
 {
 //相当于Jave代码：'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（））
 {
 //相当于Jave代码：'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>（））; 
 
 //相当于Jave代码：'startActivity（intent）;'
 activity.callObjectMethod（startActivity，（Landroid / content / Intent;）V，intent.object< jobject>（））; 
} 
} 
} 
  
 ...向上！ ;  - ）
 
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++?
解决方案
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! ;-)

                        
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