比較int數字

Question

好吧，我有一個小問題，我不知道什麼是錯的，但我認爲這是與if語句的東西，只是爲了知道joker4 ia全局變量，它被設置爲3，但是當我嘗試這個功能它沒有進入該代碼中的if語句：

public void joker4(View view) { 
    Button netocan = (Button) findViewById(R.id.button5); 
    Button netocan2 = (Button) findViewById(R.id.button4); 
    Button netocan3 = (Button) findViewById(R.id.button2); 
    if (joker4 != 0) { 
     netocan.setVisibility(View.INVISIBLE); 
     netocan2.setVisibility(View.INVISIBLE); 
     netocan3.setVisibility(View.INVISIBLE); 
     joker4 = joker4 - 1; 
    } else { 
     Toast joker1 = Toast.makeText(getApplicationContext(), 
       "Not enought JOKERS4", Toast.LENGTH_LONG); 
     joker1.show(); 
    } 
} 

Answer 1

下面是完整的代碼：

package com.peky.smartornot; 

import android.os.Bundle; 
import android.app.Activity; 
import android.view.Menu; 
import android.view.View; 
import android.widget.Button; 
import android.widget.TabHost; 
import android.widget.Toast; 
import android.widget.TabHost.TabSpec; 
import android.widget.TextView; 

public class POV1 extends Activity { 
    Sql ulaz= new Sql(this); 
    int ispravka=0; 
    int brojac = 0, brojac1 = 0, brojac2 = 0, joker1,joker2,joker3,joker4; 
    TextView joke4text; 
    TextView joke3text; 
    TextView joke2text; 
    TextView joke1text; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_pov1); 
     sve(); 
    } 
public void sve() { 
     // TODO Auto-generated method stub 
     int joker1,joker2,joker3,joker4; 
     ulaz.open(); 
     joker1=ulaz.procitaj(); 
     joker2=ulaz.procitaj2(); 
     joker3=ulaz.procitaj3(); 
     joker4=ulaz.procitaj4(); 
     ulaz.close(); 
     TabHost joker = (TabHost) findViewById(R.id.tabhost); 
     joker.setup(); 
     TabSpec izgled = joker.newTabSpec("tag1"); 
     izgled.setContent(R.id.tab1); 
     izgled.setIndicator("Joker 1"); 
     joker.addTab(izgled); 
     izgled = joker.newTabSpec("tag2"); 
     izgled.setContent(R.id.tab2); 
     izgled.setIndicator("Joker 2"); 
     joker.addTab(izgled); 
     izgled = joker.newTabSpec("tag3"); 
     izgled.setContent(R.id.tab3); 
     izgled.setIndicator("Joker 3"); 
     joker.addTab(izgled); 
     izgled = joker.newTabSpec("tag4"); 
     izgled.setContent(R.id.tab4); 
     izgled.setIndicator("Joker 4"); 
     joker.addTab(izgled); 
     joke1text=(TextView)findViewById(R.id.joker1text); 
     joke1text.setText("You have "+ joker1 +" jokers !"); 
     joke2text=(TextView)findViewById(R.id.joker2text); 
     joke2text.setText("You have "+ joker2 +" jokers !"); 
     joke3text=(TextView)findViewById(R.id.joker3text); 
     joke3text.setText("You have "+ joker3 +" jokers !"); 
     joke4text=(TextView)findViewById(R.id.joker4text); 
     joke4text.setText("You have "+ joker4 +" jokers !"); 
    } 
    public void joker4(View view) { 
     Button netocan = (Button) findViewById(R.id.button5); 
     Button netocan2 = (Button) findViewById(R.id.button4); 
     Button netocan3 = (Button) findViewById(R.id.button2); 
     if(joker4!=0){ 
     netocan.setVisibility(View.INVISIBLE); 
     netocan2.setVisibility(View.INVISIBLE); 
     netocan3.setVisibility(View.INVISIBLE); 
     joker4=joker4-1; 
     }else{Toast joker1=Toast.makeText(getApplicationContext(), "Not enought JOKERS4", Toast.LENGTH_LONG); 
     joker1.show(); 

     } 
@Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.pov1, menu); 
     return false; 
    } 

Answer 2

我想你需要解決那裏的歧義。 變量Joker4和名爲Joker-4的函數， 可能是重命名該函數可能會幫助你的原因。