1+ package com .example .calculateimc ;
2+
3+ import androidx .appcompat .app .AppCompatActivity ;
4+
5+ import android .content .res .ColorStateList ;
6+ import android .graphics .PorterDuff ;
7+ import android .os .Bundle ;
8+ import android .view .View ;
9+ import android .view .inputmethod .InputMethod ;
10+ import android .view .inputmethod .InputMethodManager ;
11+ import android .widget .Button ;
12+ import android .widget .EditText ;
13+ import android .widget .TextView ;
14+ import android .widget .Toast ;
15+
16+ import com .example .calculateimc .statics .StaticInfo ;
17+
18+ public class MainActivity extends AppCompatActivity {
19+
20+ private EditText peso ;
21+ private EditText altura ;
22+ private Button calcular ;
23+ private Button limpar ;
24+ private Button resultadoCor ;
25+ private TextView resultadoImc ;
26+ private TextView resultadoClassificacao ;
27+
28+ @ Override
29+ protected void onCreate (Bundle savedInstanceState ) {
30+ super .onCreate (savedInstanceState );
31+ setContentView (R .layout .activity_main );
32+
33+ initComponents ();
34+ handleEvents ();
35+ }
36+
37+ private void initComponents ()
38+ {
39+ try {
40+ peso = findViewById (R .id .peso );
41+ altura = findViewById (R .id .altura );
42+ calcular = findViewById (R .id .calcBtn );
43+ limpar = findViewById (R .id .cleanBtn );
44+ resultadoCor = findViewById (R .id .btnResult );
45+ resultadoImc = findViewById (R .id .imc );
46+ resultadoClassificacao = findViewById (R .id .classificacao );
47+ }
48+ catch (Exception ex ){
49+ System .out .println ("initComponents(): " + ex .getMessage ());
50+ }
51+ }
52+
53+ private void handleEvents ()
54+ {
55+ try {
56+ handleCalculateBtn ();
57+ handleCleanBtn ();
58+ }
59+ catch (Exception ex ) {
60+ System .out .println ("handleEvents(): " + ex .getMessage ());
61+ }
62+ }
63+
64+ private void handleCalculateBtn ()
65+ {
66+ try {
67+ cleanFields ();
68+ calcular .setOnClickListener (new View .OnClickListener () {
69+ @ Override
70+ public void onClick (View view ) {
71+ if (!testEditTextIsValid (peso ) || !testEditTextIsValid (altura ))
72+ Toast .makeText (MainActivity .this , "É necessário preencher todos os campos." , Toast .LENGTH_LONG ).show ();
73+ else
74+ {
75+ closeInputKeyboard (view );
76+ String weightInput = peso .getText ().toString ();
77+ String heightInput = altura .getText ().toString ();
78+ double weight = Double .parseDouble (weightInput );
79+ double height = Double .parseDouble (heightInput );
80+
81+ double result = (weight / Math .pow (height , 2 ));
82+ resultadoImc .setText (String .format ("%.2f" , result ));
83+ setLabelAndButtonColor (result );
84+ }
85+ }
86+ });
87+ }
88+ catch (Exception ex ){
89+ System .out .println ("handleCalculateBtn(): " + ex .getMessage ());
90+ }
91+ }
92+
93+ private void closeInputKeyboard (View view )
94+ {
95+ try {
96+ InputMethodManager input = (InputMethodManager ) getSystemService (MainActivity .INPUT_METHOD_SERVICE );
97+ input .hideSoftInputFromWindow (view .getWindowToken (), 0 );
98+ }
99+ catch (Exception ex ){
100+ System .out .println ("closeInputKeyboard(): " + ex .getMessage ());
101+ }
102+ }
103+
104+ private void handleCleanBtn ()
105+ {
106+ try {
107+ limpar .setOnClickListener (new View .OnClickListener () {
108+ @ Override
109+ public void onClick (View view ) {
110+ cleanFields ();
111+ closeInputKeyboard (view );
112+ }
113+ });
114+ }
115+ catch (Exception ex ){
116+ System .out .println ("handleCleanBtn(): " + ex .getMessage ());
117+ }
118+ }
119+
120+ private void cleanFields ()
121+ {
122+ try {
123+ peso .setText ("" );
124+ altura .setText ("" );
125+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .white ));
126+ resultadoImc .setText ("" );
127+ resultadoClassificacao .setText ("" );
128+ }
129+ catch (Exception ex ){
130+ System .out .println ("cleanFields(): " + ex .getMessage ());
131+ }
132+ }
133+
134+ private boolean testEditTextIsValid (EditText editText )
135+ {
136+ try {
137+ String text = editText .getText ().toString ();
138+ return !text .isEmpty ();
139+ }
140+ catch (Exception ex ){
141+ System .out .println ("testEditTextDouble(): " + ex .getMessage ());
142+ return false ;
143+ }
144+ }
145+
146+ private void setLabelAndButtonColor (double result )
147+ {
148+ try {
149+ if (result < 16.0 )
150+ {
151+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .magrezaIII ));
152+ resultadoClassificacao .setText (StaticInfo .MagrezaIII );
153+ }
154+ else if (result >= 16.0 && result <= 16.9 )
155+ {
156+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .magrezaII ));
157+ resultadoClassificacao .setText (StaticInfo .MagrezaII );
158+ }
159+ else if (result > 16.9 && result <= 18.4 )
160+ {
161+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .magrezaI ));
162+ resultadoClassificacao .setText (StaticInfo .MagrezaI );
163+ }
164+ else if (result > 18.4 && result <= 24.9 )
165+ {
166+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .eutrofia ));
167+ resultadoClassificacao .setText (StaticInfo .Eutrofia );
168+ }
169+ else if (result > 24.9 && result <= 29.9 )
170+ {
171+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .preObesidade ));
172+ resultadoClassificacao .setText (StaticInfo .PreObesidade );
173+ }
174+ else if (result > 29.9 && result <= 34.9 )
175+ {
176+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .moderada ));
177+ resultadoClassificacao .setText (StaticInfo .ObesidadeModerada );
178+ }
179+ else if (result > 34.9 && result <= 39.9 )
180+ {
181+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .severa ));
182+ resultadoClassificacao .setText (StaticInfo .ObesidadeSevera );
183+ }
184+ else
185+ {
186+ resultadoCor .setBackgroundColor (getResources ().getColor (R .color .muitoSevera ));
187+ resultadoClassificacao .setText (StaticInfo .ObesidadeMuitoSevera );
188+ }
189+ }
190+ catch (Exception ex ){
191+ System .out .println ("setLabelAndButtonColor(): " + ex .getMessage ());
192+ }
193+ }
194+
195+ }
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