@Override protected void onSaveInstanceState(@NonNull Bundle outState) { // If there's an animation in progress, cancel it first to ensure our state is up-to-date. if (mCurrentAnimator != null) { mCurrentAnimator.cancel(); } super.onSaveInstanceState(outState); outState.putInt(KEY_CURRENT_STATE, mCurrentState.ordinal()); outState.putString( KEY_CURRENT_EXPRESSION, mTokenizer.getNormalizedExpression(mFormulaEditText.getCleanText())); }
protected void initialize(Bundle savedInstanceState) { // Rebuild constants. If the user changed their locale, it won't kill the app // but it might change a decimal point from . to , Constants.rebuildConstants(); mDisplayView = (DisplayOverlay) findViewById(R.id.display); mDisplayView.setFade(findViewById(R.id.history_fade)); mDisplayForeground = (ViewGroup) findViewById(R.id.the_clear_animation); mFormulaEditText = (CalculatorEditText) findViewById(R.id.formula); mResultEditText = (CalculatorEditText) findViewById(R.id.result); mPadViewPager = (CalculatorPadView) findViewById(R.id.pad_pager); mDeleteButton = findViewById(R.id.del); mClearButton = findViewById(R.id.clr); mEqualButton = (EqualsImageButton) findViewById(R.id.pad_numeric).findViewById(R.id.eq); if (mEqualButton == null || mEqualButton.getVisibility() != View.VISIBLE) { mEqualButton = (EqualsImageButton) findViewById(R.id.pad_operator).findViewById(R.id.eq); } mTokenizer = new CalculatorExpressionTokenizer(this); mEvaluator = new CalculatorExpressionEvaluator(mTokenizer); setState( CalculatorState.values()[ savedInstanceState.getInt(KEY_CURRENT_STATE, CalculatorState.INPUT.ordinal())]); mFormulaEditText.setSolver(mEvaluator.getSolver()); mResultEditText.setSolver(mEvaluator.getSolver()); mFormulaEditText.setText( mTokenizer.getLocalizedExpression( savedInstanceState.getString(KEY_CURRENT_EXPRESSION, ""))); mFormulaEditText.addTextChangedListener(mFormulaTextWatcher); mFormulaEditText.setOnKeyListener(mFormulaOnKeyListener); mFormulaEditText.setOnTextSizeChangeListener(this); mDeleteButton.setOnLongClickListener(this); mResultEditText.setEnabled(false); findViewById(R.id.lparen).setOnLongClickListener(this); findViewById(R.id.rparen).setOnLongClickListener(this); findViewById(R.id.fun_sin).setOnLongClickListener(this); findViewById(R.id.fun_cos).setOnLongClickListener(this); findViewById(R.id.fun_tan).setOnLongClickListener(this); // Disable IME for this application getWindow() .setFlags( WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM, WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM); Button dot = (Button) findViewById(R.id.dec_point); dot.setText(String.valueOf(Constants.DECIMAL_POINT)); }
protected String getNormalizedExpression(String expr) { return mTokenizer.getNormalizedExpression(expr); }
protected String cleanExpression(String expr) { expr = EquationFormatter.appendParenthesis(expr); expr = Solver.clean(expr); expr = mTokenizer.getLocalizedExpression(expr); return expr; }