intent not loading next activity

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http://stackoverflow.com – what are the reasons that would affect my intent not to load the next activity i've fixed my manifest the intent is correct the button is okey and the activity is good basically i don't have any errors or i don't see any can anyone clear this things for me i need help..this is my intent if you would like to check it final Intent intent = new Intent(); intent.setClass(MainActivity.this, Home.class); btn_login.setOnClickListener(new OnClickListener() { public void onClick(View v) { startActivity(intent); }}); (HowTos)