Java解决方案不是问题:
public boolean killCall(Context context) {
try {
// Get the boring old TelephonyManager
TelephonyManager telephonyManager =
(TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
// Get the getITelephony() method
Class classTelephony = Class.forName(telephonyManager.getClass().getName());
Method methodGetITelephony = classTelephony.getDeclaredMethod("getITelephony");
// Ignore that the method is supposed to be private
methodGetITelephony.setAccessible(true);
// Invoke getITelephony() to get the ITelephony interface
Object telephonyInterface = methodGetITelephony.invoke(telephonyManager);
// Get the endCall method from ITelephony
Class telephonyInterfaceClass =
Class.forName(telephonyInterface.getClass().getName());
Method methodEndCall = telephonyInterfaceClass.getDeclaredMethod("endCall");
// Invoke endCall()
methodEndCall.invoke(telephonyInterface);
} catch (Exception ex) { // Many things can go wrong with reflection calls
Log.d(TAG,"PhoneStateReceiver **" + ex.toString());
return false;
}
return true;
}
但如何在Delphi中制作相同的解决方案?
不幸的是我没有找到解决这个问题的指南。
答案 0 :(得分:7)
不幸的是,由于Delphi的Android Bridge框架中存在一个已知错误,因此目前无法直接使用Delphi代码:
QC #120233 Android Jlang_Class interface is missing 19 methods
QP #RSP-12686 Android Jlang_Class interface is missing 19 methods
getDeclaredMethod()
是缺少的方法之一,如果没有它,您将无法访问ITelephony
接口。因此,您只需要在Java代码中编写应用程序的这一部分,将其包装在.jar
文件中,并根据Embarcadero的文档导入到您的Delphi代码中作为外部API:
Using a Custom Set of Java Libraries In Your RAD Studio Android Apps
西雅图的 更新:,大部分缺失的方法现已添加到Jlang_Class
。但是,getDeclaredMethod()
不是其中之一,但幸运的是getDeclaredMethods()
已被添加,因此您应该能够为此编写一个小包装器,例如:
function getdeclaredMethod(Cls: Jlang_Class; const Name: JString): JMethod;
var
Arr: TJavaObjectArray<JMethod>;
Meth: JMethod;
I: Integer;
begin
Result := nil;
Arr := Cls.getDeclaredMethods;
for I := 0 to Arr.Length-1 do
begin
Meth := Arr.Items[I];
if Meth.getName.compareTo(Name) = 0 then
begin
Result := Method;
Exit;
end;
end;
raise Exception.CreateFmt('method not found: %s', [Name]);
end;
然后你可以这样做:
function killCall(context: JContext): Boolean;
var
obj: JObject;
telephonyManager: JTelephonyManager;
classTelephony: Jlang_Class;
methodGetITelephony: JMethod;
telephonyInterface: JObject;
telephonyInterfaceClass: Jlang_Class;
methodEndCall: JMethod;
begin
try
// Get the boring old TelephonyManager
obj := context.getSystemService(TJContext.JavaClass.TELEPHONY_SERVICE);
telephonyManager := TJTelephonyManager.Wrap((obj as ILocalObject).GetObjectID);
// Get the getITelephony() method
classTelephony := TJlang_Class.JavaClass.forName(telephonyManager.getClass.getName);
methodGetITelephony := getDeclaredMethod(classTelephony, StringToJString('getITelephony'));
// Ignore that the method is supposed to be private
methodGetITelephony.setAccessible(True);
// Invoke getITelephony() to get the ITelephony interface
telephonyInterface := methodGetITelephony.invoke(telephonyManager);
// Get the endCall method from ITelephony
telephonyInterfaceClass := TJlang_Class.JavaClass.forName(telephonyInterface.getClass.getName);
methodEndCall := getDeclaredMethod(telephonyInterfaceClass, StringToJString('endCall'));
// Invoke endCall()
methodEndCall.invoke(telephonyInterface);
Result := True;
except
on E: Exception do // Many things can go wrong with reflection calls
begin
//
Result := False;
end;
end;
end;