Kann kein RadioButton drücken

Question

Ich kann Code nicht arbeiten. Es kann gestartet werden, aber ich kann nichts auswählen. Es ist so, seit ich die setOnClikListener Methode hinzugefügt hatte. Ich habe es auch mit setOnCheckedChangeListener versucht.

Bevor ich diese umgesetzt

btn.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 
     @Override 
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
      if(rg1.getCheckedRadioButtonId() == R.id.radioButton2 && rg2.getCheckedRadioButtonId() == R.id.radioButton4){ 
       tv.setText(R.string.Good_answer);} 
      else{ 
       tv.setText(R.string.Wrong_answer);} 
     } 
    }); 

zu diesem Code alles funktioniert.

RadioButton radioButton2; 
RadioButton radioButton4; 
RadioGroup rg1,rg2; 
TextView tv; 
RadioButton btn; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
} 

public void OnRadioButtonClick(View view) { 
    boolean checked = ((RadioButton) view).isChecked(); 

    radioButton2 = (RadioButton) findViewById(R.id.radioButton2); 
    radioButton4 = (RadioButton) findViewById(R.id.radioButton4); 
    switch (view.getId()) { 
     case R.id.radioButton1: 

      Toast.makeText(MainActivity.this, "1 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton2: 

      Toast.makeText(MainActivity.this, "2 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton3: 

      Toast.makeText(MainActivity.this, "3 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 
     case R.id.radioButton4: 

      Toast.makeText(MainActivity.this, "4 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton5: 

      Toast.makeText(MainActivity.this, "5 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton6: 

      Toast.makeText(MainActivity.this, "6 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 
    } 

diese

> $ adb shell am start -n "make.myapplication1/make.myapplication1.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER -D 
Waiting for application to come online: make.myapplication1.test | make.myapplication1 
Connecting to make.myapplication1 
I/art: Late-enabling -Xcheck:jni 
W/art: Unexpected CPU variant for X86 using defaults: x86 
W/ActivityThread: Application make.myapplication1 is waiting for the debugger on port 8100... 
I/System.out: Sending WAIT chunk 
I/art: Debugger is active 
I/System.out: Debugger has connected 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: waiting for debugger to settle... 
I/System.out: debugger has settled (1364) 
W/System: ClassLoader referenced unknown path: /data/app/make.myapplication1-1/lib/x86 
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable 
D/libEGL: Emulator has host GPU support, qemu.gles is set to 1. 
E/libEGL: load_driver(/system/lib/egl/libGLES_emulation.so): dlopen failed: library "/system/lib/egl/libGLES_emulation.so" not found 
D/libEGL: loaded /system/lib/egl/libEGL_emulation.so 
D/libEGL: loaded /system/lib/egl/libGLESv1_CM_emulation.so 
D/libEGL: loaded /system/lib/egl/libGLESv2_emulation.so 

      [ 02-26 09:34:50.095 2037: 2059 D/   ] 
      HostConnection::get() New Host Connection established 0xe7e8e4b0, tid 2059 
I/OpenGLRenderer: Initialized EGL, version 1.4 
D/OpenGLRenderer: Swap behavior 1 
I/Choreographer: Skipped 68 frames! The application may be doing too much work on its main thread. 
Connected to the target VM, address: 'localhost:8625', transport: 'socket' 
D/AndroidRuntime: Shutting down VM 
E/AndroidRuntime: FATAL EXCEPTION: main 
        Process: make.myapplication1, PID: 2037 
        java.lang.IllegalStateException: Could not execute method for android:onClick 
         at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293) 
         at android.view.View.performClick(View.java:5609) 
         at android.widget.CompoundButton.performClick(CompoundButton.java:122) 
         at android.view.View$PerformClick.run(View.java:22259) 
         at android.os.Handler.handleCallback(Handler.java:751) 
         at android.os.Handler.dispatchMessage(Handler.java:95) 
         at android.os.Looper.loop(Looper.java:154) 
         at android.app.ActivityThread.main(ActivityThread.java:6077) 
         at java.lang.reflect.Method.invoke(Native Method) 
         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 
        Caused by: java.lang.reflect.InvocationTargetException 
         at java.lang.reflect.Method.invoke(Native Method) 
         at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
         at android.view.View.performClick(View.java:5609)  
         at android.widget.CompoundButton.performClick(CompoundButton.java:122)  
         at android.view.View$PerformClick.run(View.java:22259)  
         at android.os.Handler.handleCallback(Handler.java:751)  
         at android.os.Handler.dispatchMessage(Handler.java:95)  
         at android.os.Looper.loop(Looper.java:154)  
         at android.app.ActivityThread.main(ActivityThread.java:6077)  
         at java.lang.reflect.Method.invoke(Native Method)  
         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)  
         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)  
        Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.CompoundButton.setOnCheckedChangeListener(android.widget.CompoundButton$OnCheckedChangeListener)' on a null object reference 
         at make.myapplication1.MainActivity.OnRadioButtonClick(MainActivity.java:68) 
         at java.lang.reflect.Method.invoke(Native Method)  
         at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)  
         at android.view.View.performClick(View.java:5609)  
         at android.widget.CompoundButton.performClick(CompoundButton.java:122)  
         at android.view.View$PerformClick.run(View.java:22259)  
         at android.os.Handler.handleCallback(Handler.java:751)  
         at android.os.Handler.dispatchMessage(Handler.java:95)  
         at android.os.Looper.loop(Looper.java:154)  
         at android.app.ActivityThread.main(ActivityThread.java:6077)  
         at java.lang.reflect.Method.invoke(Native Method)  
         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)  
         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)  

Neueste Version in der Konsole holen. Stil kann kein rb drücken.

public class MainActivity extends AppCompatActivity { 


private Boolean[] answer = new Boolean[2]; 
private Boolean[] checkedAnswer = new Boolean[2]; 


RadioButton radioButton2; 
RadioButton radioButton4; 
RadioGroup rg1, rg2; 
TextView tv; 
RadioButton btn; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
} 

public void OnRadioButtonClick(View view) { 
    final boolean checked = ((RadioButton) view).isChecked(); 

    radioButton2 = (RadioButton) findViewById(R.id.radioButton2); 
    radioButton4 = (RadioButton) findViewById(R.id.radioButton4); 
    switch (view.getId()) { 
     case R.id.radioButton1: 

      Toast.makeText(MainActivity.this, "1 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton2: 

      Toast.makeText(MainActivity.this, "2 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton3: 

      Toast.makeText(MainActivity.this, "3 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 
     case R.id.radioButton4: 

      Toast.makeText(MainActivity.this, "4 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton5: 

      Toast.makeText(MainActivity.this, "5 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 

     case R.id.radioButton6: 

      Toast.makeText(MainActivity.this, "6 is selected" + String.valueOf(checked), 
        Toast.LENGTH_SHORT).show(); 
      break; 
    } 
    rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
     @Override 
     public void onCheckedChanged(RadioGroup group, int checkedId) { 
      if (checkedId == R.id.radioButton2) { 
       checkedAnswer[0] = true; 
       answer[0] = true; 
      } else { 
       checkedAnswer[0] = true; 
       answer[0] = false; 
      } 
     } 
    }); 
    rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
     @Override 
     public void onCheckedChanged(RadioGroup group, int checkedId) { 
      if (checkedId == R.id.radioButton4) { 
       checkedAnswer[1] = true; 
       answer[1] = true; 
      } else { 
       checkedAnswer[1] = true; 
       answer[1] = false; 
      } 
     } 
    }); 

    btn.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View v) { 
      boolean check = true; 
      boolean correct = true; 

      for (boolean radioChecked : checkedAnswer) 
       check = check && radioChecked; 
      if (check) { 
       for (boolean radioAnswer : answer) 
        correct = correct && radioAnswer; 
       if (correct) 
        tv.setText(R.string.Good_answer); 
       else 
        tv.setText(R.string.Wrong_answer); 
      } 
     } 
    }); 
} 

}

Xml

<RadioGroup 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/Radio_Group"> 

     <RadioButton 
      android:text="Option1" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/radioButton1" 
      android:layout_weight="1" 
      android:onClick="OnRadioButtonClick" /> 

     <RadioButton 
      android:text="Option2" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/radioButton2" 
      android:onClick="OnRadioButtonClick" /> 

     <RadioButton 
      android:text="Option3" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/radioButton3" 
      android:layout_weight="1" 
      android:onClick="OnRadioButtonClick" /> 


    </RadioGroup> 

    <RadioGroup 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/Radio_Group1" 
     android:layout_below="@+id/Radio_Group" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" 
     android:layout_marginTop="68dp"> 

     <RadioButton 
      android:text="Option4" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/radioButton4" 
      android:onClick="OnRadioButtonClick" /> 

     <RadioButton 
      android:text="Option5" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/radioButton5" 
      android:layout_weight="1" 
      android:onClick="OnRadioButtonClick" /> 

     <RadioButton 
      android:text="Option6" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:id="@+id/radioButton6" 
      android:layout_weight="1" 
      android:onClick="OnRadioButtonClick" /> 


    </RadioGroup> 

</RelativeLayout> 

Answer 1

Szenario 1:

Versuchen Sie, die OnCheckedChangeListener(), um Ihre radioGroups Einstellung und prüfen, welche Radiobutton dort ausgewählt wurde.

Für Ex:

Angenommen, Ihre Radiobuttons radioButton1, radioButton2, radioButton3 und radioButton4 in Ihrem Radiogroup rg1 sind.

XML-Datei:

<RadioGroup 
    android:id="@+id/rg1" 
    android:gravity="center" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content"> 

    <RadioButton 
     android:id="@+id/radioButton1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 


    <RadioButton 
     android:id="@+id/radioButton2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <RadioButton 
     android:id="@+id/radioButton3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <RadioButton 
     android:id="@+id/radioButton3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 
</RadioGroup> 

JAVA File:

RadioGroup rg1 = (RadioGroup) findViewById(R.id.rg1); 

rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
    @Override 
    public void onCheckedChanged(RadioGroup group, int checkedId) { 

     //////////////////////////////////////////////////////////////////////////////////// 
     // the onCheckedChanged() function takes in two arguments the second of which is 
     // the Id of the radio button which ws checked 
     // Inside is an if condition checking the Id of the RadioButton selected and depending 
     // on the Id we are setting value to the textViews as per your code. 
     //////////////////////////////////////////////////////////////////////////////////// 
     if ((checkedId == R.id.radioButton1) || (checkedId == R.id.radioButton2)) { 
      tv.setText(R.string.Good_answer); 
     } else { 
      tv.setText(R.string.Wrong_answer); 
     } 
    } 
}); 

Szenario 2:

Aber, wenn Sie mit zwei Optionsfelder in jeweils zwei getrennte RadioGroups hatte und wollte prüfen Wenn das richtige Optionsfeld in jeder Gruppe ausgewählt wurde, können Sie Folgendes tun:

Datei

JAVA:

boolean[] answer = new boolean[2]; 
boolean[] checked = new boolean[2]; 

checked[0] = false; 
checked[1] = false; 

RadioGroup rg1 = (RadioGroup) findViewById(R.id.rg1); 
// radioButton1 and radioButton2 are in rg1 

RadioGroup rg2 = (RadioGroup) findViewById(R.id.rg1); 
// radioButton3 and radioButton4 are in rg1 

rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
    @Override 
    public void onCheckedChanged(RadioGroup group, int checkedId) { 

     if (checkedId == R.id.radioButton1) { 
      checked[0] = true; 
      answer[0] = false; 
      checkAnswer(); 
     } else { 
      checked[0] = true; 
      answer[0] = true; 
      checkAnswer();   
     } 
    } 
}); 

rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
    @Override 
    public void onCheckedChanged(RadioGroup group, int checkedId) { 

     if (checkedId == R.id.radioButton3) { 
      checked[1] = true; 
      answer[1] = false; 
      checkAnswer(); 
     } else { 
      checked[1] = true; 
      answer[1] = true; 
      checkAnswer(); 
     } 
    } 
}); 

checkAnswer():

public void checkAnswer(){ 
    if(checked[0] && checked[1]){ 
     if(answer[0] && answer[1]) 
      tv.setText(R.string.Good_answer); 
     else 
      tv.setText(R.string.Wrong_answer); 
    } 

habe ich zwei boolean Arrays:

1) überprüfen, ob ein Radiobutton in jedem Radiogroup überprüft wurde (geprüft [])

2) Überprüfen Sie, ob in jeder RadioGroup die richtige Option aktiviert wurde (antwort [])

Das war alles, was ich aus dem Code herausfinden konnte, den Sie bereitgestellt hatten. Ich hoffe, das war das, wonach du gesucht hast. Dies ist auch meine erste Veröffentlichung hier. Bitte korrigieren Sie mich, wenn es etwas gibt.

EDIT

Beispiel App

Ich habe eine einzige Aktivität App mit zwei Fragen mit drei Optionen je. Hier sind die Dateien.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/activity_main" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin"> 

    <RadioGroup 
     android:id="@+id/rg1" 
     android:orientation="vertical" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content"> 

     <TextView 
      android:textColor="@android:color/black" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Question 1"/> 

     <RadioButton 
      android:text="Correct Option" 
      android:id="@+id/radioButton1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" /> 


     <RadioButton 
      android:text="Wrong Option" 
      android:id="@+id/radioButton2" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" /> 

     <RadioButton 
      android:text="Wrong Option" 
      android:id="@+id/radioButton3" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" /> 

    </RadioGroup> 

    <RadioGroup 
     android:layout_marginTop="16dp" 
     android:layout_below="@+id/rg1" 
     android:id="@+id/rg2" 
     android:orientation="vertical" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content"> 

     <TextView 
      android:textColor="@android:color/black" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Question 2"/> 


     <RadioButton 
      android:text="Wrong Option" 
      android:id="@+id/radioButton4" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" /> 

     <RadioButton 
      android:text="Correct Option" 
      android:id="@+id/radioButton5" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" /> 


     <RadioButton 
      android:text="Wrong Option" 
      android:id="@+id/radioButton6" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" /> 
    </RadioGroup> 

    <TextView 
     android:id="@+id/textViewAnswer" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:textAlignment="center" 
     android:layout_above="@+id/button" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 
    <Button 
     android:layout_marginTop="8dp" 
     android:id="@+id/button" 
     android:text="check answers" 
     android:layout_alignParentBottom="true" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 

</RelativeLayout> 

MainActivity.java

Sie haben MainActivity RadioGroup.OnCheckedChangeListener implementieren mehrere RadioGroups zu handhaben, wenn Sie auf jede einzelne mehrere Fragen statt Zuweisung haben Einstellung OnCheckedChangeListener Gruppe.

public class MainActivity extends AppCompatActivity{ 

    // Initialize to the number of question 
    private static int NUMBER_OF_QUESTIONS = 2; 
    private Boolean[] answer = new Boolean[NUMBER_OF_QUESTIONS]; 
    private Boolean[] checked = new Boolean[NUMBER_OF_QUESTIONS]; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     RadioGroup rg1 = (RadioGroup) findViewById(R.id.rg1); 
     RadioGroup rg2 = (RadioGroup) findViewById(R.id.rg2); 
     final TextView tv = (TextView) findViewById(R.id.textViewAnswer); 
     Button mButton = (Button) findViewById(R.id.button); 

     // Listener for question1 
     // Let us suppose A is the correct answer (R.id.radioButton1) 
     rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
      @Override 
      public void onCheckedChanged(RadioGroup group, int checkedId) { 
       if (checkedId == R.id.radioButton1) { 
        checked[0] = true; 
        answer[0] = true; 
       } else { 
        checked[0] = true; 
        answer[0] = false; 
       } 
      } 
     }); 

     // Listener for question1 
     // Let us suppose B is the correct answer (R.id.radioButton5) 
     rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
      @Override 
      public void onCheckedChanged(RadioGroup group, int checkedId) { 
       if (checkedId == R.id.radioButton5) { 
        checked[1] = true; 
        answer[1] = true; 
       } else { 
        checked[1] = true; 
        answer[1] = false; 
       } 
      } 
     }); 

     // Listener for button to check answers 
     mButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       boolean check = true; 
       boolean correct = true; 
       // To check if all questions have been answered 
       for (boolean radioChecked : checked) 
        check = check && radioChecked; 
       if (check) { 

        // To check if all questions have been answered correctly 
        for (boolean radioAnswer : answer) 
         correct = correct && radioAnswer; 
        if (correct) 
         tv.setText(R.string.Good_answer); 
        else 
         tv.setText(R.string.Wrong_answer); 

       } 
       else 
        tv.setText("Answer all questions"); 
      } 
     }); 
    } 
} 

Ich hoffe, dass dies endlich Ihr Problem löst. :)

Screenshots: