How to pass an object class as a parameter?

Question

public void onClick(View v) { switch (v.getId()) { case R.id.btnGallery: Intent intent = new Intent(this, ClassName1.class); startActivity(intent); break; case R.id.btnNew: intent = new Intent(this, ClassName2.class); startActivity(intent); break; case R.id.btnPrice: intent = new Intent(this, ClassName3.class); startActivity(intent); break; case R.id.btnCallBack: intent = new Intent(this, ClassName4.class); startActivity(intent); break; ... } }

Since there is a lot of monotonous work (call activity), I would like to optimize.

Something like that:

 public void classUsing (String s) { Intent intent = new Intent(this, s.class); startActivity(intent); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btnGallery: classUsing(ClassName1); break; case R.id.btnNew: classUsing(ClassName2); break; case R.id.btnPrice: classUsing(ClassName3); break; ... } }

How to transfer the class name as an argument to another method and use it there?

You could just startActivity(intent) for cases and that's all.
It will be much more concise than writing a separate method.

Accepted Answer · 2016-07-12T10:27:12

<ИмяКласса>.class is of type Class . You can pass a class as an argument to a method like this:

 public void doSomething(Class clazz) { Intent i = new Intent(context, clazz); }

Use method:

 doSomething(Class1.class);

Thanks, but how to actually transfer the name of the class? because case R.id.btnGallery: classUsing (ClassName); break; causes an error - user208111

How to pass an object class as a parameter?

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