Checkbox nicht in Android 4.x sichtbar, aber in Android 5+ sichtbar

Question

Ich habe eine Listenansicht, die Textansicht und ein Kontrollkästchen enthält.

Ich zeige die ListView in einer DialogFragment. Das Problem besteht darin, dass die Kontrollkästchen für Geräte (Emulator) mit Android-Version 4.1 bis 4.4.4 nicht angezeigt werden. Aber sie erscheinen normalerweise für Android 5.0 und höher. Ich habe versucht, dies für Stunden zu beheben. Aber kein Erfolg.

Kann mir bitte jemand sagen, was mache ich falsch?

[]

Listenansicht:

<RelativeLayout 
     android:id="@+id/rl_cats_overlay" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_below="@id/tv_game_info"> 

     <ListView 
      android:id="@+id/lv_select_cats" 
      android:layout_width="wrap_content" 
      android:layout_height="200dp" 
      android:layout_marginLeft="35dp" 
      android:layout_marginRight="35dp" 
      android:fadeScrollbars="false" /> 

     <TextView 
      android:id="@+id/tv_overlay_pro" 
      android:layout_width="wrap_content" 
      android:layout_height="200dp" 
      android:layout_alignParentEnd="true" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentRight="true" 
      android:layout_alignParentStart="true" 
      android:layout_marginLeft="35dp" 
      android:layout_marginRight="35dp" 
      android:background="#A6000000" 
      android:gravity="center" 
      android:text="Available with \n'Quiz Time Pro'" 
      android:textColor="@color/android_green" 
      android:textSize="24sp" /> 

    </RelativeLayout> 

Listenansicht Reihe:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:orientation="horizontal"> 

<CheckBox 
    android:id="@+id/cb_row_item" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentStart="true"/> 

<TextView 
    android:id="@+id/tv_row_item" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignBaseline="@+id/cb_row_item" 
    android:layout_alignBottom="@+id/cb_row_item" 
    android:layout_marginLeft="12dp" 
    android:layout_marginStart="12dp" 
    android:layout_toEndOf="@+id/cb_row_item" 
    android:layout_toRightOf="@+id/cb_row_item" 
    android:text="Category name goes here" 
    android:textSize="15sp" /> 

</RelativeLayout> 

DialogFragment Klasse Aufblasen der Listenansicht:

public class SelectGameModeDialogFragment extends DialogFragment { 

boolean[] checkedCategories = new boolean[Constants.CATEGORIES.length + 1]; 
boolean[] checkedDifficulty = new boolean[Constants.DIFFICULTY_LEVELS.length + 1]; 

List<String> categories = new ArrayList<>(); 
List<String> difficultyLevels = new ArrayList<>(); 

TextView gameInfoTV; 
Spinner spinner; 

public static SelectGameModeDialogFragment newInstance(String title) { 
    SelectGameModeDialogFragment frag = new SelectGameModeDialogFragment(); 
    Bundle args = new Bundle(); 
    args.putString("title", title); 
    frag.setArguments(args); 
    frag.setStyle(DialogFragment.STYLE_NO_FRAME, 0); 
    return frag; 
} 

@Nullable 
@Override 
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) { 
    getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); 
    categories.addAll(Arrays.asList(Constants.CATEGORIES)); 
    difficultyLevels.addAll(Arrays.asList(Constants.DIFFICULTY_LEVELS)); 
    return inflater.inflate(R.layout.select_game_mode, container); 
} 

@Override 
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 

    final ListView lvCategories = (ListView) view.findViewById(R.id.lv_select_cats); 

    gameInfoTV = (TextView) view.findViewById(R.id.tv_game_info); 
    gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[0]); 

    final TextView proTV = (TextView) view.findViewById(R.id.tv_overlay_pro); 
    final Button btnPlay = (Button) view.findViewById(R.id.btn_restart_game); 

    spinner = (Spinner) view.findViewById(R.id.spinner_gamer_categories); 
    ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(), R.array.game_types_spinner, R.layout.spinner_item); 
    adapter.setDropDownViewResource(R.layout.spinner_dropdown_item); 
    spinner.setAdapter(adapter); 
    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
     public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 
      if (pos == Constants.MODE_MILLIONAIRE 
        || pos == Constants.MODE_UNLIMITED 
        || pos == Constants.MODE_20QUESTIONS 
        || pos == Constants.MODE_60SECONDS) { 
       ViewGroup.LayoutParams params = lvCategories.getLayoutParams(); 
       params.height = 0; 
       lvCategories.setLayoutParams(params); 
       proTV.setVisibility(View.GONE); 
      } else if (pos == Constants.MODE_CATEGORIES) { 
       MultipleCategoryListAdapter adapter = new MultipleCategoryListAdapter(getActivity(), categories); 
       lvCategories.setAdapter(adapter); 
       ViewGroup.LayoutParams params = lvCategories.getLayoutParams(); 
       params.height = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200, getResources().getDisplayMetrics()); 
       lvCategories.setLayoutParams(params); 
      } else if (pos == Constants.MODE_DIFFICULTY) { 
       SingleCategoryListAdapter adapter = new SingleCategoryListAdapter(getActivity(), difficultyLevels); 
       lvCategories.setAdapter(adapter); 
       ViewGroup.LayoutParams params = lvCategories.getLayoutParams(); 
       params.height = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 80, getResources().getDisplayMetrics()); 
       lvCategories.setLayoutParams(params); 
      } 
      lvCategories.setVisibility(View.INVISIBLE); 
      if (pos == Constants.MODE_MILLIONAIRE) { 
       gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[0]); 
      } else if (pos == Constants.MODE_20QUESTIONS) { 
       gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[1]); 
      } else if (pos == Constants.MODE_CATEGORIES) { 
       gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[2]); 
       lvCategories.setVisibility(View.VISIBLE); 
      } else if (pos == Constants.MODE_60SECONDS) { 
       gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[3]); 
      } else if (pos == Constants.MODE_UNLIMITED) { 
       gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[4]); 
      } else if (pos == Constants.MODE_DIFFICULTY) { 
       gameInfoTV.setText(getResources().getStringArray(R.array.game_types_info)[5]); 
       lvCategories.setVisibility(View.VISIBLE); 
      } 
     } 

     public void onNothingSelected(AdapterView<?> parent) { 
     } 
    }); 

    btnPlay.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      int spinnerPosition = spinner.getSelectedItemPosition(); 
      ArrayList<String> cat = new ArrayList<>(); 
      if (spinnerPosition == Constants.MODE_MILLIONAIRE) { 
       goToPlayingFragmentWithCategories(cat, Constants.MODE_MILLIONAIRE); 
      } else if (spinnerPosition == Constants.MODE_20QUESTIONS) { 
       goToPlayingFragmentWithCategories(cat, Constants.MODE_20QUESTIONS); 
      } else if (spinnerPosition == Constants.MODE_CATEGORIES) { 
       for (int i = 0; i < checkedCategories.length; i++) { 
        if (checkedCategories[i]) { 
         cat.add(categories.get(i)); 
        } 
       } 
       goToPlayingFragmentWithCategories(cat, Constants.MODE_CATEGORIES); 
       Arrays.fill(checkedCategories, false); 
       System.out.println(); 
      } else if (spinnerPosition == Constants.MODE_60SECONDS) { 
       goToPlayingFragmentWithCategories(cat, Constants.MODE_60SECONDS); 
      } else if (spinnerPosition == Constants.MODE_UNLIMITED) { 
       goToPlayingFragmentWithCategories(cat, Constants.MODE_UNLIMITED); 
      } else if (spinnerPosition == Constants.MODE_DIFFICULTY) { 
       String diff = ""; 
       for (int i = 0; i < 3; i++) { 
        if (checkedDifficulty[i]) { 
         diff = difficultyLevels.get(i); 
        } 
       } 
       goToPlayingFragmentWithCategories(cat, Constants.MODE_DIFFICULTY, diff); 
      } 
      dismiss(); 
     } 
    }); 

    Button btnBack = (Button) view.findViewById(R.id.btn_game_mode_back); 
    btnBack.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      dismiss(); 
     } 
    }); 
} 

Answer 1

ich das Problem gefunden zu haben. Die Kontrollkästchenfarbe für Android 4.x ist schwarz und verschmilzt daher mit dem schwarzen Hintergrund. Problem behoben, indem AppCompatCheckBox anstelle von CheckBox verwendet wurde.

Answer 2

Warum nicht einfach den Text der CheckBox verwenden?

konnte diese Weise Ihren ListView Artikel nur

sein

<?xml version="1.0" encoding="utf-8"?> 
<CheckBox 
     android:id="@+id/cb_row_item" 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" 
     android:text="Category name goes here" 
     android:textSize="15sp"/>