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Invalid call, number of argument mismatch, got 2 need 1, found definitions ('Ljava/lang/String,[Ljava/lang/Class;',) in class b'java/lang/Class' method b'getMethod'
#738
Closed
Sahil-pixel opened this issue
Dec 6, 2024
· 3 comments
I want to Get the Method class and retrieve the 'printInt' method using reflection
Running on Ubuntu Pyjnius (1.6.1)
python file
fromjniusimportautoclass# Step 1: Load the Java Class classClass=autoclass('java.lang.Class')
JInteger=autoclass('java.lang.Integer')
Array=autoclass('java.lang.reflect.Array')
String=autoclass('java.lang.String')
parameter_types=Array.newInstance(Class, 1)
# Step 2: Create a list to represent the parameter types array#parameter_types = [None] # Create a list with a size of 1 (similar to new Class<?>[1] in Java)# Step 3: Assign the int.class (primitive type representation in Java) to the first elementparameter_types[0] =Class.forName('java.lang.Integer')
# Step 4: Use the array (e.g., pass it to a reflective method)Example=autoclass('org.Example') # Load your Example classexample_instance=Example() # Create an instance of the Example class# Get the Method class and retrieve the 'printInt' method using reflection#Method = autoclass('java.lang.reflect.Method')method=example_instance.getClass().getMethod(String("printInt"), parameter_types)
# Invoke the method with the appropriate arguments#method.invoke(example_instance, 42)
i got some Error
method = example_instance.getClass().getMethod(String("printInt"), parameter_types)
File "jnius/jnius_export_class.pxi", line 846, in jnius.JavaMethod.call
jnius.JavaException: Invalid call, number of argument mismatch, got 2 need 1, found definitions ('Ljava/lang/String,[Ljava/lang/Class;',) in class b'java/lang/Class' method b'getMethod'
The text was updated successfully, but these errors were encountered:
I know that but i want to do that test for another application. Please let me know how we use Pyjnius for reflection
To implement
socket = (BluetoothSocket) device.getClass().getMethod("createRfcommSocket", new Class[] {int.class}).invoke(device, 1);
Line using pyjnius edufolly/flutter_bluetooth_serial#154 (comment)
I want to Get the Method class and retrieve the 'printInt' method using reflection
Running on Ubuntu Pyjnius (1.6.1)
python file
Example.java
i got some Error
method = example_instance.getClass().getMethod(String("printInt"), parameter_types)
File "jnius/jnius_export_class.pxi", line 846, in jnius.JavaMethod.call
jnius.JavaException: Invalid call, number of argument mismatch, got 2 need 1, found definitions ('Ljava/lang/String,[Ljava/lang/Class;',) in class b'java/lang/Class' method b'getMethod'
The text was updated successfully, but these errors were encountered: