如何将所有 If 语句仅放在一个类或函数中？
[英]How Can I put all my If statement in only one class or function?
问题描述
I have a lot of if statements in my code, is it possible to create a function or list and include all of them into it?
我的代码中有很多 if 语句，是否可以创建一个函数或列表并将它们全部包含在其中？
I want to summarize those ifs to reduce the length of my code so I can change it easily afterward.我想总结一下这些 if 以减少我的代码长度，以便我以后可以轻松更改它。 It's difficult to go inside every if to change it.每次改变它都很难进入。 It would be easier to have one big function with all of those ifs and then I can manipulate them in case of adding new events.拥有一个包含所有这些 if 的大函数会更容易，然后我可以在添加新事件时操作它们。 Can somebody help me please?有人可以帮我吗？
public class MainActivity extends AppCompatActivity {
public static final String ERROR_DETECTED = "No NFC tag detected!";
public static final String WRITE_SUCCESS = "Text written to the NFC tag successfully!";
public static final String WRITE_ERROR = "Error during writing, is the NFC tag close enough to your device?";
NfcAdapter nfcAdapter;
PendingIntent pendingIntent;
IntentFilter writeTagFilters[];
boolean writeMode;
Tag myTag;
Context context;
Button btnWrite;
View D1,D2,D3,D4,Autoprotection,Etat_centrale,Capot,Alimentation,PP4;
TextView tvNFCContent,message, nfc_annoce, CompteurTelecommandes,Conseil_detecteur,text_centrale,Telecommande_centrale,Titre_systeme,Titre_telecommande,Nbre_defauts4,Defauts_capot,Defauts_pion;
ImageView back,Batterie;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main );
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
context = this;
tvNFCContent = findViewById(R.id.contenu);
message = findViewById(R.id.ecriture);
PP4 =findViewById(R.id.pp4);
btnWrite = findViewById(R.id.ecrire_nfc);
Etat_centrale = findViewById(R.id.etat_final);
D1 = findViewById(R.id.detecteur_1);
D2 = findViewById(R.id.detecteur_2);
D3 = findViewById(R.id.detecteur_3);
D4 = findViewById(R.id.detecteur_4);
Alimentation = findViewById(R.id.alimentation);
Autoprotection = findViewById(R.id.tamper);
Capot = findViewById(R.id.capot);
Batterie = findViewById(R.id.batterie);
Telecommande_centrale= findViewById(R.id.telecommande_inconnu);
Defauts_capot=findViewById(R.id.defaut_capot);
Defauts_pion=findViewById(R.id.defaut_tamper);
CompteurTelecommandes=findViewById(R.id.compteur_télecommande);
Conseil_detecteur=findViewById(R.id.conseil);
text_centrale=findViewById(R.id.centrale_text);
Titre_systeme=findViewById(R.id.titre_systeme);
Titre_telecommande=findViewById(R.id.titre_telecommande);
// Mode_alimentation = findViewById(R.id.mode_alim);
//Telecommande_arret = findViewById(R.id.telecommande_arret);
//Telecommande_trame= findViewById(R.id.telecommande_trame);
//Telecommande_centrale= findViewById(R.id.telecommande_centrale);
//Nbre_defauts1= findViewById(R.id.nbre_defauts1);
//Nbre_defauts2= findViewById(R.id.nbre_defauts2);
//Nbre_defauts3= findViewById(R.id.nbre_defauts3);
//Nbre_defauts4= findViewById(R.id.nbre_defauts4);
PP4.setVisibility(View.GONE);
nfc_annoce = findViewById(R.id.textView4);
nfc_annoce.setVisibility(View.VISIBLE);
back=findViewById(R.id.Reader);
back.setVisibility(View.VISIBLE);
CompteurTelecommandes.setVisibility(View.GONE);
Conseil_detecteur.setVisibility(View.GONE);
text_centrale.setVisibility(View.GONE);
Titre_telecommande.setVisibility(View.GONE);
Titre_systeme.setVisibility(View.GONE);
D1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View a) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Détecteur 1"
);
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
D2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View b) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Détecteur 2");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
D3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View c) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Détecteur 3"
);
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
D4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View d) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Détecteur 4");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
btnWrite.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
try {
if(myTag ==null) {
Toast.makeText(context, ERROR_DETECTED, Toast.LENGTH_LONG).show();
} else {
write(message.getText().toString(), myTag);
Toast.makeText(context, WRITE_SUCCESS, Toast.LENGTH_LONG ).show();
}
} catch (IOException e) {
Toast.makeText(context, WRITE_ERROR, Toast.LENGTH_LONG ).show();
e.printStackTrace();
} catch (FormatException e) {
Toast.makeText(context, WRITE_ERROR, Toast.LENGTH_LONG ).show();
e.printStackTrace();
}
}
});
nfcAdapter = NfcAdapter.getDefaultAdapter(this);
if (nfcAdapter == null) {
// Stop here, we definitely need NFC
Toast.makeText(this, "Cet appareil ne possède pas la technologie NFC", Toast.LENGTH_LONG).show();
finish();
}
readFromIntent(getIntent());
pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
IntentFilter tagDetected = new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED);
tagDetected.addCategory(Intent.CATEGORY_DEFAULT);
writeTagFilters = new IntentFilter[] { tagDetected };
}
/******************************************************************************
**********************************Read From NFC Tag***************************
******************************************************************************/
private void readFromIntent(Intent intent) {
String action = intent.getAction();
if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(action)
|| NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)
|| NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action)) {
Parcelable[] rawMsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
NdefMessage[] msgs = null;
if (rawMsgs != null) {
msgs = new NdefMessage[rawMsgs.length];
for (int i = 0; i < rawMsgs.length; i++) {
msgs[i] = (NdefMessage) rawMsgs[i];
}
}
buildTagViews(msgs);
}
}
private void buildTagViews(NdefMessage[] msgs) {
if (msgs == null || msgs.length == 0) return;
String text = "";
// String tagId = new String(msgs[0].getRecords()[0].getType());
byte[] payload = msgs[0].getRecords()[0].getPayload();
String textEncoding = ((payload[0] & 128) == 0) ? "UTF-8" : "UTF-16"; // Get the Text Encoding
int languageCodeLength = payload[0] & 0063; // Get the Language Code, e.g. "en"
// String languageCode = new String(payload, 1, languageCodeLength, "US-ASCII");
try {
// Get the Text
text = new String(payload, languageCodeLength + 1, payload.length - languageCodeLength - 1, textEncoding);
} catch (UnsupportedEncodingException e) {
Log.e("UnsupportedEncoding", e.toString());
}
tvNFCContent.setText(text+"(( taille de la trame: " + text.length () +"))");
//lenght.setText(text.length ());
//tramemail.setText(text+"(( taille de la trame: " + text.length () +"))" + Version);
nfc_annoce.setVisibility(View.GONE);
back.setVisibility(View.GONE);
//Nbre_defauts1.setText(" Le Nombre de défauts enregistrés sur le détecteur 1 est de "+ text.charAt(39)+ text.charAt(40));
//Nbre_defauts2.setText(" Le Nombre de défauts enregistrés sur le détecteur 2 est de "+ text.charAt(41)+ text.charAt(42));
//Nbre_defauts3.setText(" Le Nombre de défauts enregistrés sur le détecteur 3 est de "+ text.charAt(43)+ text.charAt(44));
//Nbre_defauts4.setText(" Le Nombre de défauts enregistrés sur le détecteur 4 est de "+ text.charAt(45)+ text.charAt(46));
//Nbre_defauts_pion.setText(" Le Nombre de défauts enregistrés sur l'autoprotection est de "+ text.charAt(57)+ text.charAt(58));
//Nbre_defauts_capot.setText(" Le Nombre de défauts enregistrés sur le capot est de "+ text.charAt(55)+ text.charAt(56));
CompteurTelecommandes.setVisibility(View.VISIBLE);
Conseil_detecteur.setVisibility(View.VISIBLE);
PP4.setVisibility(View.VISIBLE);
text_centrale.setVisibility(View.VISIBLE);
Titre_systeme.setVisibility(View.VISIBLE);
Titre_telecommande.setVisibility(View.VISIBLE);
if (text.charAt(6) == 'O')
{
Etat_centrale.setBackgroundResource(R.drawable.ic_ok);
} else
{
AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("Centrale en Alarme");
alertDialog.setMessage(" La centrale de sécurisation est en défaut.\n" +
"Une intervention de votre part est nécessaire !");
alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "Fermer",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.show();
Etat_centrale.setBackgroundResource(R.drawable.ic_warning_red);
}
if (text.charAt(7) == 'A') {
D1.setBackgroundResource(R.drawable.ic_warning_red);
} else if (text.charAt(7) == 'O') {
D1.setBackgroundResource(R.drawable.ic_ok);
} else if (text.charAt(7) == 'W') {
D1.setBackgroundResource(R.drawable.ic__warning_orange);
} else {
D1.setBackgroundResource(R.drawable.ic_baseline_block_24);
}
if (text.charAt(8) == 'A') {
D2.setBackgroundResource(R.drawable.ic_warning_red);
} else if (text.charAt(8) == 'O') {
D2.setBackgroundResource(R.drawable.ic_ok);
} else if (text.charAt(8) == 'W') {
D2.setBackgroundResource(R.drawable.ic__warning_orange);
} else {
D2.setBackgroundResource(R.drawable.ic_baseline_block_24);
}
if (text.charAt(9) == 'A') {
D3.setBackgroundResource(R.drawable.ic_warning_red);
} else if (text.charAt(9) == 'O') {
D3.setBackgroundResource(R.drawable.ic_ok);
} else if (text.charAt(9) == 'W') {
D3.setBackgroundResource(R.drawable.ic__warning_orange);
} else {
D3.setBackgroundResource(R.drawable.ic_baseline_block_24);
}
if (text.charAt(10) == 'A') {
D4.setBackgroundResource(R.drawable.ic_warning_red);
} else if (text.charAt(10) == 'O') {
D4.setBackgroundResource(R.drawable.ic_ok);
} else if (text.charAt(10) == 'W') {
D4.setBackgroundResource(R.drawable.ic__warning_orange);
} else {
D4.setBackgroundResource(R.drawable.ic_baseline_block_24);
}
if (text.charAt(59)== 'O'){
Capot.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), "Autoprotection capot enclenchée", Toast.LENGTH_SHORT).show();
}
});
Capot.setBackgroundResource(R.drawable.capot_vert);
Defauts_capot.setVisibility(View.GONE);
}
else {
Capot.setBackgroundResource(R.drawable.capot_rouge);
Capot.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Défaut autoprotection capot \n" +
"Vérifiez que le capot est bien fermé et vissé");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Defauts_capot.setText("Défaut autoprotection capot \n"+
"Vérifiez que le capot est bien fermé et vissé");
}
if (text.charAt(60) == 'O') {
Autoprotection.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View e) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Autoprotection base enclenchée");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Autoprotection.setBackgroundResource(R.drawable.pion_vert);
Defauts_pion.setVisibility(View.GONE); }
else {
Autoprotection.setBackgroundResource(R.drawable.pion_rouge);
Autoprotection.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View e) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Défaut autoprotection base \n" +
"Vérifiez le contact et la fixation de la centrale du mobilier.\n" +
"Selon l'installation, revissez ou re-adhésivez la centrale");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Defauts_pion.setVisibility(View.VISIBLE);
Defauts_pion.setText("Défaut autoprotection base\n " +
"Vérifiez le contact et la fixation de la centrale au mobilier \n" +
"Selon l'installation, revissez ou re-adhésivez la centrale");
}
if (text.charAt(61) == 'P') {
Alimentation.setBackgroundResource(R.drawable.ic_baseline_power_vert);
Alimentation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Alimentation secteur");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
}
else if (text.charAt(61)== 'B') {
Alimentation.setBackgroundResource(R.drawable.ic_baseline_power_bleu);
Alimentation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Alimentation double secteur");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
}
else {
Alimentation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Alimentation pile");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Alimentation.setBackgroundResource(R.drawable.ic_baseline_power_rouge);
}
if (text.charAt(62) == 'H') {
Batterie.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Capacité de la pile (CR 123 A) optimale");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Batterie.setBackgroundResource(R.drawable.batterie_full); }
else if (text.charAt(62)== 'M'){
Batterie.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Pile (CR 123 A) à 50% de sa capacité");
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Batterie.setBackgroundResource(R.drawable.batterie_midlle);
}
else if (text.charAt(62)== 'L'){
Batterie.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Capacité de la pile (CR 123 A) faible \n" +
"\n"+
"Vite, remplacez-la ! "
);
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Batterie.setBackgroundResource(R.drawable.batterie_vide);
}
else {
Batterie.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText("Aucune pile insérée." +
"Pour une installation 100% sécurisée, nous vous conseillons d'insérer une pile CR 123 A"
);
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
});
Batterie.setBackgroundResource(R.drawable.batterie_absente);
}
//int version = (int)text.charAt(4);
if (text.charAt(67)=='I'|| text.charAt(72)=='I') {
Telecommande_centrale.setVisibility(View.VISIBLE);
Telecommande_centrale.setText("Attention:des télécommandes inconnues ont été présentées à la centrale" +
"Consultez la procédure d'affection des télécommandes");
}
else{
Telecommande_centrale.setVisibility(View.GONE);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
getMenuInflater().inflate(R.menu.main,menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.action_share:
Intent sharingIntent =new Intent(Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String shareBody= "Bonjour";
String shareSubject= "Retour SAV";
sharingIntent.putExtra(Intent.EXTRA_TEXT,shareBody);
sharingIntent.putExtra(Intent.EXTRA_SUBJECT,shareSubject);
startActivity(Intent.createChooser(sharingIntent, "partager avec"));
break;
}
return super.onOptionsItemSelected(item);
}
/******************************************************************************
**********************************Write to NFC Tag****************************
******************************************************************************/
private void write(String text, Tag tag) throws IOException, FormatException {
NdefRecord[] records = { createRecord(text) };
NdefMessage message = new NdefMessage(records);
// Get an instance of Ndef for the tag.
Ndef ndef = Ndef.get(tag);
// Enable I/O
ndef.connect();
// Write the message
ndef.writeNdefMessage(message);
// Close the connection
ndef.close();
}
private NdefRecord createRecord(String text) throws UnsupportedEncodingException {
String lang = "en";
byte[] textBytes = text.getBytes();
byte[] langBytes = lang.getBytes("US-ASCII");
int langLength = langBytes.length;
int textLength = textBytes.length;
byte[] payload = new byte[1 + langLength + textLength];
// set status byte (see NDEF spec for actual bits)
payload[0] = (byte) langLength;
// copy langbytes and textbytes into payload
System.arraycopy(langBytes, 0, payload, 1, langLength);
System.arraycopy(textBytes, 0, payload, 1 + langLength, textLength);
NdefRecord recordNFC = new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], payload);
return recordNFC;
}
@Override
protected void onNewIntent(Intent intent) {
setIntent(intent);
readFromIntent(intent);
if(NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())){
myTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
}
}
@Override
public void onPause(){
super.onPause();
WriteModeOff();
}
@Override
public void onResume(){
super.onResume();
WriteModeOn();
}
/******************************************************************************
**********************************Enable Write********************************
******************************************************************************/
private void WriteModeOn(){
writeMode = true;
nfcAdapter.enableForegroundDispatch(this, pendingIntent, writeTagFilters, null);
}
/******************************************************************************
**********************************Disable Write*******************************
******************************************************************************/
private void WriteModeOff(){
writeMode = false;
nfcAdapter.disableForegroundDispatch(this);
}
}
2 个解决方案
解决方案1
0 2020-09-29 15:50:26
You could have a Map holding the values, so you can access them directly.您可以拥有一个包含值的 Map，因此您可以直接访问它们。 for example:例如：
final Map<Char, Integer> foo = new HashMap();
foo.add('A', R.drawable.ic_warning_red);
foo.add('O', R.drawable.ic_ok);
//... so on
Then you could apply it straighfoward然后你可以直接应用它
D3.setBackgroundResource(
Optional.ofNullable(foo.get(text.charAt(9)))
.orElse(R.drawable.ic_baseline_block_24));
解决方案2
0 已采纳 2020-09-29 16:15:21
to reduce the length of my code so I can change it easily after because it's difficult to go onside every if to change it
As @Steve proposed, you could refactor the code to make it smaller and easier to mofity/edit.正如@Steve 所提议的，您可以重构代码以使其更小且更易于修改/编辑。 One possible way is to say, create a method updateTextview().一种可能的方法是说，创建一个方法 updateTextview()。 Something like就像是
private void updateTextview(final String text){
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER,0,-150);
TextView tv = new TextView (MainActivity.this) ;
tv.setBackgroundResource(R.color.blanc);
tv.setTextColor(Color.BLACK);
tv.setTextSize(15);
tv.setText(text);
Typeface t = Typeface.create( "serif", Typeface.NORMAL);
tv.setTypeface(t);
tv.setPadding(50, 50,50,50);
toast.setView(tv);
toast.show();
}
PS: I noticed only the tv.setText() was changing. PS：我注意到只有tv.setText()发生了变化。 You can add more parameters to the function depending on what changes in the function.您可以根据函数的变化向函数添加更多参数。
To make use of the method, when adding a listener say on D1, you could have something like要使用该方法，在 D1 上添加侦听器 say 时，您可以使用类似
D1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View a) {
final String text = "Détecteur 1";
updateTextview(text);
}
});
Also, using switch statements (as opposed to ifs) could make your code look cleaner.此外，使用switch 语句（而不是 ifs）可以使您的代码看起来更简洁。 As an example, I will take a small piece of if-else-ifs from the code.作为一个例子，我将从代码中取出一小段 if-else-ifs。 The ifs on text.charAt(7) changing the BackgroundResource of D1. text.charAt(7) 上的 ifs 改变了 D1 的 BackgroundResource。
char charAt7 = text.charAt(7);
switch(charAt7){
case 'A' : D1.setBackgroundResource(R.drawable.ic_warning_red); break;
case 'O' : D1.setBackgroundResource(R.drawable.ic_ok); break;
case 'W' : D1.setBackgroundResource(R.drawable.ic__warning_orange); break;
default: D1.setBackgroundResource(R.drawable.ic_baseline_block_24);
}
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