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android - Removing fragments from an activity

FragmantClass rSum = new FragmantClass();
getSupportFragmentManager().beginTransaction().remove(rSum).commit();       

I am trying to remove this fragment, when i load switch another fragment. The above fragment does not get removed. Here is the method i am calling to switch fragments.

public void switchContent(Fragment fragment) {
    FragmantClass rSum = new FragmantClass();
    getSupportFragmentManager().beginTransaction().remove(rSum).commit();
    mContent = fragment;
    getSupportFragmentManager()
        .beginTransaction()
        .replace(R.id.content_frame, fragment)
        .commit();
    getSlidingMenu().showContent();
}
question from:https://stackoverflow.com/questions/15857760/removing-fragments-from-an-activity

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by (71.8m points)
getSupportFragmentManager().beginTransaction().
remove(getSupportFragmentManager().findFragmentById(R.id.frame)).commit();

Try this, it should work.

public void switchContent(Fragment fragment) {
    getSupportFragmentManager().beginTransaction().
    remove(getSupportFragmentManager().findFragmentById(R.id.frame)).commit();
    mContent = fragment;
    getSupportFragmentManager()
        .beginTransaction()
        .replace(R.id.content_frame, fragment)
        .commit();
    getSlidingMenu().showContent();
}

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