安卓單選按鈕顯示的東西基於radioButton給onClick錯誤

Question

我是新來的android編程和建設我的第一個app.It應該顯示一個關於兩個數字的消息，基於RadioGroup.My問題中選擇的內容是當我點擊與「onClick」相關的「查找」按鈕時，我不斷收到錯誤。

public void onCheckedChanged(RadioGroup radio, int checkedId) { 
    count = checkedId; 
} 
public void executa(View v){ 
     RadioButton radioButton1=(RadioButton) findViewById(R.id.radioButton1); 
     RadioButton radioButton2=(RadioButton) findViewById(R.id.radioButton2); 
     RadioButton radioButton3=(RadioButton) findViewById(R.id.radioButton3); 
     RadioButton radioButton4=(RadioButton) findViewById(R.id.radioButton4); 
     Button button=(Button) findViewById(R.id.button); 
    RadioGroup radio=(RadioGroup) findViewById(R.id.radio); 
    if (v.getId() == R.id.button){ 
    count = radio.getCheckedRadioButtonId(); 
    EditText editText1 = (EditText) findViewById(R.id.Text1); 
     int nr1=Integer.getInteger(editText1.getText().toString()); 
     EditText editText2 = (EditText) findViewById(R.id.Text2); 
     int nr2=Integer.getInteger(editText2.getText().toString()); 

     pozitive=0; 

     negative=0; 

     if (nr1==nr2) max=min=-1; else 
     if (nr1>nr2){ max=nr1; 
            min=nr2;} 
     else { max=nr2; 
      min=nr1;} 
     if (nr1>0) pozitive++; 
       else negative--; 
     if (nr2>0) pozitive++; 
     else negative--; 

    Intent intent=new Intent(this,Raspuns.class); 
    switch(count){ 
    case 1:intent.putExtra(Valoare, max); 
    break; 
    case 2:intent.putExtra(Valoare, min); 
    break; 
    case 3:intent.putExtra(Valoare, pozitive); 
    break; 
    case 4:intent.putExtra(Valoare, negative); 
    break; 
    } 
    startActivity(intent); 
} 
} 
@Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_main); 


} 

     @Override 
     public boolean onCreateOptionsMenu(Menu menu) { 
      getMenuInflater().inflate(R.menu.activity_main, menu); 
      return false; 
     } 

} 

此外，該消息通過一個意圖發送到第二個活動，從executa調用，通過點擊AFLA button.Thanks任何意見！ 編輯：logcat的：

12-02 00:12:11.788: E/AndroidRuntime(3524): FATAL EXCEPTION: main 
12-02 00:12:11.788: E/AndroidRuntime(3524): java.lang.IllegalStateException: Could not execute method of the activity 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.view.View$1.onClick(View.java:3044) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.view.View.performClick(View.java:3511) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.view.View$PerformClick.run(View.java:14109) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.os.Handler.handleCallback(Handler.java:605) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.os.Handler.dispatchMessage(Handler.java:92) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.os.Looper.loop(Looper.java:137) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.app.ActivityThread.main(ActivityThread.java:4424) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at java.lang.reflect.Method.invoke(Method.java:511) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at dalvik.system.NativeStart.main(Native Method) 
12-02 00:12:11.788: E/AndroidRuntime(3524): Caused by: java.lang.reflect.InvocationTargetException 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at java.lang.reflect.Method.invoke(Method.java:511) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at android.view.View$1.onClick(View.java:3039) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  ... 11 more 
12-02 00:12:11.788: E/AndroidRuntime(3524): Caused by: java.lang.NullPointerException 
12-02 00:12:11.788: E/AndroidRuntime(3524):  at com.example.myfirstrealandroidapp.MainActivity.executa(MainActivity.java:48) 
12-02 00:12:11.788: E/AndroidRuntime(3524):  ... 14 more 

Answer 1

感謝您的輸入！看來我的應用程序的錯誤是，我用"Integer.getInt「而不是」Integer.parseInt"。另外，它給了我正確的答案，當我使用收音機聽衆和按鈕

Answer 2

RadioButton radioButton1=(RadioButton) findViewById(R.id.radioButton1); 

    RadioButton radioButton2=(RadioButton) findViewById(R.id.radioButton2); 

    RadioButton radioButton3=(RadioButton) findViewById(R.id.radioButton3); 
    RadioButton radioButton4=(RadioButton) findViewById(R.id.radioButton4); 
    Button button=(Button) findViewById(R.id.button); 
    RadioGroup radio=(RadioGroup) findViewById(R.id.radio); 
    radio.setOnCheckedChangeListener(new OnCheckedChangeListener() { 

    public void onCheckedChanged(RadioGroup group, int checkedId) { 
     // TODO Auto-generated method stub 
     count = checkedId; 
    } 
});