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Android

Cannot resolve; Android Studio

I am getting two types of errors. Cannot resolve Symbol and cannot resolve method. Can anyone explain to me what these errors are and how I resolve them please?

final TextView factLabel = (TextView) findViewById(R.id.factTextView); Button showFactButton = (Button) findById(R.id.showFactButton); View.OnClickListener listener = new View.OnClickListener() { @Override public void onClick(View v) { String fact = ""; // Randomly select a fact.

            // Update the label with our dynamic fact
            factLabel.setText(fact);
        }
    };