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public abstract class BasePreferenceActivity extends PreferenceActivity {
  private AppCompatDelegate appCompatDelegate;
  private Toolbar toolbar;

  protected abstract int getPreferencesResource();

  protected abstract int getLayoutResource();

  protected abstract int getTitleResource();

hrules6872

  public void hideSoftKeyboard(Activity context) {
    View view = context.getCurrentFocus();
    if (view == null) {
      return;
    }

    InputMethodManager inputMethodManager =
        (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
    inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(),
        InputMethodManager.HIDE_NOT_ALWAYS);

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public class DisplayLeakConnectorView extends View {
  private static final float DEFAULT_STROKEWIDTH = 4f;
  private static final int DEFAULT_COLOR_BRANCH = 0xFFbababa;
  private static final int DEFAULT_COLOR_ROOT = 0xFF84a6c5;
  private static final int DEFAULT_COLOR_LEAK = 0xFFb1554e;

  public static final int TYPE_START = -1;
  public static final int TYPE_NODE = 0;
  public static final int TYPE_END = 1;
  public static final int TYPE_DEFAULT = TYPE_NODE;

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public class Log {
    static final boolean isLoggable = BuildConfig.DEBUG;
    static final String TAG = BuildConfig.APPLICATION_ID;

    public static void i(String tag, String string) {
        if (isLoggable) android.util.Log.i(tag, string);
    }

    public static void i(String string) {
        if (isLoggable) android.util.Log.i(TAG, string);

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public class UniversalFragmentPagerAdapter extends FragmentPagerAdapter {
  private final String[] tabTitles;
  private final Fragment[] tabFragments;

  public UniversalFragmentPagerAdapter(@NonNull FragmentManager fm, String[] tabTitles,
      @NonNull Fragment[] tabFragments) {
    super(fm);
    if (tabTitles != null && tabTitles.length != tabFragments.length) {
      throw new IllegalArgumentException();
    }

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public class FontCache {
  private static final Map<String, Typeface> mapFont = new HashMap<>();

  public static Typeface getFont(Context context, String fontName) {
    Typeface typeface = mapFont.get(fontName);

    if (typeface == null) {
      try {
        typeface = Typeface.createFromAsset(context.getAssets(), fontName);
      } catch (Exception e) {

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public class AdvancedRadioGroup extends LinearLayout {
  private int radioButtonCheckedId;
  private boolean working;

  private RadioGroup.OnCheckedChangeListener listener;

  public AdvancedRadioGroup(Context context) {
    this(context, null);
  }

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public class TextViewFont extends TextView {
  public TextViewFont(Context context) {
    this(context, null);
  }

  public TextViewFont(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
  }

  public TextViewFont(Context context, AttributeSet attrs, int defStyleAttr) {

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public class UniversalFragmentStatePagerAdapter extends FragmentStatePagerAdapter {
  private final String[] titles;
  private final Fragment[] fragments;

  public UniversalFragmentStatePagerAdapter(@NonNull FragmentManager fragmentManager,
      String[] titles, @NonNull Fragment[] fragments) {
    super(fragmentManager);
    if (titles != null && titles.length != fragments.length) {
      throw new IllegalArgumentException();
    }

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public class TextViewWriter extends TextView {
  private static final int DEFAULT_DELAY_MS = 150;
  private static final boolean DEFAULT_AUTOSTART = false;

  public static final int MODE_CHARACTER = 0;
  public static final int MODE_WORD = 1;
  private static final int DEFAULT_MODE = MODE_CHARACTER;

  @Retention(RetentionPolicy.SOURCE) @IntDef({ MODE_CHARACTER, MODE_WORD }) public @interface Mode {
  }